- Linux-kselftest-mirror - lists.linaro.org

[PATCH v2 0/4] Support non-blocking pidfds

by Christian Brauner

Hi, Passing a non-blocking pidfd to waitid() currently has no effect, i.e. is not supported. There are users which would like to use waitid() on pidfds that are O_NONBLOCK and mix it with pidfds that are blocking and both pass them to waitid(). The expected behavior is to have waitid() return -EAGAIN for non-blocking pidfds and to block for blocking pidfds without needing to perform any additional checks for flags set on the pidfd before passing it to waitid(). Non-blocking pidfds will return EAGAIN from waitid() when no child process is ready yet. Returning -EAGAIN for non-blocking pidfds makes it easier for event loops that handle EAGAIN specially. It also makes the API more consistent and uniform. In essence, waitid() is treated like a read on a non-blocking pidfd or a recvmsg() on a non-blocking socket. With the addition of support for non-blocking pidfds we support the same functionality that sockets do. For sockets() recvmsg() supports MSG_DONTWAIT for pidfds waitid() supports WNOHANG. Both flags are per-call options. In contrast non-blocking pidfds and non-blocking sockets are a setting on an open file description affecting all threads in the calling process as well as other processes that hold file descriptors referring to the same open file description. Both behaviors, per call and per open file description, have genuine use-cases. A concrete use-case that was brought on-list (see [1]) was Josh's async pidfd library. Ever since the introduction of pidfds and more advanced async io various programming languages such as Rust have grown support for async event libraries. These libraries are created to help build epoll-based event loops around file descriptors. A common pattern is to automatically make all file descriptors they manage to O_NONBLOCK. For such libraries the EAGAIN error code is treated specially. When a function is called that returns EAGAIN the function isn't called again until the event loop indicates the the file descriptor is ready. Supporting EAGAIN when waiting on pidfds makes such libraries just work with little effort. Thanks! Christian [1]: https://lore.kernel.org/lkml/20200811181236.GA18763@localhost/ Christian Brauner (4): pidfd: support PIDFD_NONBLOCK in pidfd_open() exit: support non-blocking pidfds tests: port pidfd_wait to kselftest harness tests: add waitid() tests for non-blocking pidfds include/uapi/linux/pidfd.h | 12 + kernel/exit.c | 15 +- kernel/pid.c | 12 +- tools/testing/selftests/pidfd/pidfd.h | 4 + tools/testing/selftests/pidfd/pidfd_wait.c | 298 +++++++++------------ 5 files changed, 157 insertions(+), 184 deletions(-) create mode 100644 include/uapi/linux/pidfd.h base-commit: d012a7190fc1fd72ed48911e77ca97ba4521bccd -- 2.28.0

5 years, 1 month

3
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[PATCH] selftests/bpf: Fix check in global_data_init.

by Hao Luo

The returned value of bpf_object__open_file() should be checked with libbpf_get_error() rather than NULL. This fix prevents test_progs from crash when test_global_data.o is not present. Signed-off-by: Hao Luo <haoluo(a)google.com> --- tools/testing/selftests/bpf/prog_tests/global_data_init.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/prog_tests/global_data_init.c b/tools/testing/selftests/bpf/prog_tests/global_data_init.c index 3bdaa5a40744..ee46b11f1f9a 100644 --- a/tools/testing/selftests/bpf/prog_tests/global_data_init.c +++ b/tools/testing/selftests/bpf/prog_tests/global_data_init.c @@ -12,7 +12,8 @@ void test_global_data_init(void) size_t sz; obj = bpf_object__open_file(file, NULL); - if (CHECK_FAIL(!obj)) + err = libbpf_get_error(obj); + if (CHECK_FAIL(err)) return; map = bpf_object__find_map_by_name(obj, "test_glo.rodata"); -- 2.28.0.526.ge36021eeef-goog

5 years, 1 month

3
2
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[PATCH] selftests/net: improve descriptions for XFAIL cases in psock_snd.sh

by Po-Hsu Lin

Before changing this it's a bit confusing to read test output: raw csum_off with bad offset (fails) ./psock_snd: write: Invalid argument Change "fails" in the test case description to "expected to fail", so that the test output can be more understandable. Signed-off-by: Po-Hsu Lin <po-hsu.lin(a)canonical.com> --- tools/testing/selftests/net/psock_snd.sh | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/tools/testing/selftests/net/psock_snd.sh b/tools/testing/selftests/net/psock_snd.sh index 6331d91..170be65 100755 --- a/tools/testing/selftests/net/psock_snd.sh +++ b/tools/testing/selftests/net/psock_snd.sh @@ -45,7 +45,7 @@ echo "raw vnet hdr" echo "raw csum_off" ./in_netns.sh ./psock_snd -v -c -echo "raw csum_off with bad offset (fails)" +echo "raw csum_off with bad offset (expected to fail)" (! ./in_netns.sh ./psock_snd -v -c -C) @@ -57,7 +57,7 @@ echo "raw min size" echo "raw mtu size" ./in_netns.sh ./psock_snd -l "${mss}" -echo "raw mtu size + 1 (fails)" +echo "raw mtu size + 1 (expected to fail)" (! ./in_netns.sh ./psock_snd -l "${mss_exceeds}") # fails due to ARPHRD_ETHER check in packet_extra_vlan_len_allowed @@ -65,19 +65,19 @@ echo "raw mtu size + 1 (fails)" # echo "raw vlan mtu size" # ./in_netns.sh ./psock_snd -V -l "${mss}" -echo "raw vlan mtu size + 1 (fails)" +echo "raw vlan mtu size + 1 (expected to fail)" (! ./in_netns.sh ./psock_snd -V -l "${mss_exceeds}") echo "dgram mtu size" ./in_netns.sh ./psock_snd -d -l "${mss}" -echo "dgram mtu size + 1 (fails)" +echo "dgram mtu size + 1 (expected to fail)" (! ./in_netns.sh ./psock_snd -d -l "${mss_exceeds}") -echo "raw truncate hlen (fails: does not arrive)" +echo "raw truncate hlen (expected to fail: does not arrive)" (! ./in_netns.sh ./psock_snd -t "$((${vnet_hlen} + ${eth_hlen}))") -echo "raw truncate hlen - 1 (fails: EINVAL)" +echo "raw truncate hlen - 1 (expected to fail: EINVAL)" (! ./in_netns.sh ./psock_snd -t "$((${vnet_hlen} + ${eth_hlen} - 1))") @@ -86,13 +86,13 @@ echo "raw truncate hlen - 1 (fails: EINVAL)" echo "raw gso min size" ./in_netns.sh ./psock_snd -v -c -g -l "${mss_exceeds}" -echo "raw gso min size - 1 (fails)" +echo "raw gso min size - 1 (expected to fail)" (! ./in_netns.sh ./psock_snd -v -c -g -l "${mss}") echo "raw gso max size" ./in_netns.sh ./psock_snd -v -c -g -l "${max_mss}" -echo "raw gso max size + 1 (fails)" +echo "raw gso max size + 1 (expected to fail)" (! ./in_netns.sh ./psock_snd -v -c -g -l "${max_mss_exceeds}") echo "OK. All tests passed" -- 2.7.4

5 years, 1 month

2
1
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[PATCH] selftests/bpf: Fix check in global_data_init.

by Hao Luo

The returned value of bpf_object__open_file() should be checked with IS_ERR() rather than NULL. This fix makes test_progs not crash when test_global_data.o is not present. Signed-off-by: Hao Luo <haoluo(a)google.com> --- tools/testing/selftests/bpf/prog_tests/global_data_init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/prog_tests/global_data_init.c b/tools/testing/selftests/bpf/prog_tests/global_data_init.c index 3bdaa5a40744..1ece86d5c519 100644 --- a/tools/testing/selftests/bpf/prog_tests/global_data_init.c +++ b/tools/testing/selftests/bpf/prog_tests/global_data_init.c @@ -12,7 +12,7 @@ void test_global_data_init(void) size_t sz; obj = bpf_object__open_file(file, NULL); - if (CHECK_FAIL(!obj)) + if (CHECK_FAIL(IS_ERR(obj))) return; map = bpf_object__find_map_by_name(obj, "test_glo.rodata"); -- 2.28.0.402.g5ffc5be6b7-goog

5 years, 1 month

2
2
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[PATCH v3] mm/thp: fix __split_huge_pmd_locked() for migration PMD

by Ralph Campbell

A migrating transparent huge page has to already be unmapped. Otherwise, the page could be modified while it is being copied to a new page and data could be lost. The function __split_huge_pmd() checks for a PMD migration entry before calling __split_huge_pmd_locked() leading one to think that __split_huge_pmd_locked() can handle splitting a migrating PMD. However, the code always increments the page->_mapcount and adjusts the memory control group accounting assuming the page is mapped. Also, if the PMD entry is a migration PMD entry, the call to is_huge_zero_pmd(*pmd) is incorrect because it calls pmd_pfn(pmd) instead of migration_entry_to_pfn(pmd_to_swp_entry(pmd)). Fix these problems by checking for a PMD migration entry. Fixes: 84c3fc4e9c56 ("mm: thp: check pmd migration entry in common path") cc: stable(a)vger.kernel.org # 4.14+ Signed-off-by: Ralph Campbell <rcampbell(a)nvidia.com> Reviewed-by: Yang Shi <shy828301(a)gmail.com> Reviewed-by: Zi Yan <ziy(a)nvidia.com> --- No changes in v3 to this patch, just added reviewed-by and fixes to the change log and sending this as a separate patch from the rest of the series ("mm/hmm/nouveau: add THP migration to migrate_vma_*"). I'll hold off resending the series without this patch unless there are changes needed. mm/huge_memory.c | 42 +++++++++++++++++++++++------------------- 1 file changed, 23 insertions(+), 19 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 2a468a4acb0a..606d712d9505 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2023,7 +2023,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd, put_page(page); add_mm_counter(mm, mm_counter_file(page), -HPAGE_PMD_NR); return; - } else if (is_huge_zero_pmd(*pmd)) { + } else if (pmd_trans_huge(*pmd) && is_huge_zero_pmd(*pmd)) { /* * FIXME: Do we want to invalidate secondary mmu by calling * mmu_notifier_invalidate_range() see comments below inside @@ -2117,30 +2117,34 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd, pte = pte_offset_map(&_pmd, addr); BUG_ON(!pte_none(*pte)); set_pte_at(mm, addr, pte, entry); - atomic_inc(&page[i]._mapcount); - pte_unmap(pte); - } - - /* - * Set PG_double_map before dropping compound_mapcount to avoid - * false-negative page_mapped(). - */ - if (compound_mapcount(page) > 1 && !TestSetPageDoubleMap(page)) { - for (i = 0; i < HPAGE_PMD_NR; i++) + if (!pmd_migration) atomic_inc(&page[i]._mapcount); + pte_unmap(pte); } - lock_page_memcg(page); - if (atomic_add_negative(-1, compound_mapcount_ptr(page))) { - /* Last compound_mapcount is gone. */ - __dec_lruvec_page_state(page, NR_ANON_THPS); - if (TestClearPageDoubleMap(page)) { - /* No need in mapcount reference anymore */ + if (!pmd_migration) { + /* + * Set PG_double_map before dropping compound_mapcount to avoid + * false-negative page_mapped(). + */ + if (compound_mapcount(page) > 1 && + !TestSetPageDoubleMap(page)) { for (i = 0; i < HPAGE_PMD_NR; i++) - atomic_dec(&page[i]._mapcount); + atomic_inc(&page[i]._mapcount); + } + + lock_page_memcg(page); + if (atomic_add_negative(-1, compound_mapcount_ptr(page))) { + /* Last compound_mapcount is gone. */ + __dec_lruvec_page_state(page, NR_ANON_THPS); + if (TestClearPageDoubleMap(page)) { + /* No need in mapcount reference anymore */ + for (i = 0; i < HPAGE_PMD_NR; i++) + atomic_dec(&page[i]._mapcount); + } } + unlock_page_memcg(page); } - unlock_page_memcg(page); smp_wmb(); /* make pte visible before pmd */ pmd_populate(mm, pmd, pgtable); -- 2.20.1

5 years, 1 month

1
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[PATCH v2 0/7] mm/hmm/nouveau: add THP migration to migrate_vma_*

by Ralph Campbell

This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. An earlier version was posted previously [1]. This version now supports splitting a THP midway in the migration process which led to a number of changes. The patches apply cleanly to the current linux-mm tree. Since there are a couple of patches in linux-mm from Dan Williams that modify lib/test_hmm.c and drivers/gpu/drm/nouveau/nouveau_dmem.c, it might be easiest if Andrew could take these through the linux-mm tree assuming that's OK with other maintainers like Ben Skeggs. [1] https://lore.kernel.org/linux-mm/20200619215649.32297-1-rcampbell@nvidia.com Ralph Campbell (7): mm/thp: fix __split_huge_pmd_locked() for migration PMD mm/migrate: move migrate_vma_collect_skip() mm: support THP migration to device private memory mm/thp: add prep_transhuge_device_private_page() mm/thp: add THP allocation helper mm/hmm/test: add self tests for THP migration nouveau: support THP migration to private memory drivers/gpu/drm/nouveau/nouveau_dmem.c | 289 +++++++++++----- drivers/gpu/drm/nouveau/nouveau_svm.c | 11 +- drivers/gpu/drm/nouveau/nouveau_svm.h | 3 +- include/linux/gfp.h | 10 + include/linux/huge_mm.h | 12 + include/linux/memremap.h | 9 + include/linux/migrate.h | 2 + lib/test_hmm.c | 439 +++++++++++++++++++++---- lib/test_hmm_uapi.h | 3 + mm/huge_memory.c | 177 +++++++--- mm/memory.c | 10 +- mm/migrate.c | 429 +++++++++++++++++++----- mm/rmap.c | 2 +- tools/testing/selftests/vm/hmm-tests.c | 404 +++++++++++++++++++++++ 14 files changed, 1519 insertions(+), 281 deletions(-) -- 2.20.1

5 years, 1 month

4
11
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[PATCH 0/7] powerpc/watchpoint: 2nd DAWR kvm enablement + selftests

by Ravi Bangoria

Patch #1, #2 and #3 enables p10 2nd DAWR feature for Book3S kvm guest. DAWR is a hypervisor resource and thus H_SET_MODE hcall is used to set/unset it. A new case H_SET_MODE_RESOURCE_SET_DAWR1 is introduced in H_SET_MODE hcall for setting/unsetting 2nd DAWR. Also, new capability KVM_CAP_PPC_DAWR1 has been added to query 2nd DAWR support via kvm ioctl. This feature also needs to be enabled in Qemu to really use it. I'll reply link to qemu patches once I post them in qemu-devel mailing list. Patch #4, #5, #6 and #7 adds selftests to test 2nd DAWR. Dependency: 1: p10 kvm base enablement https://lore.kernel.org/linuxppc-dev/20200602055325.6102-1-alistair@popple.… 2: 2nd DAWR powervm/baremetal enablement https://lore.kernel.org/linuxppc-dev/20200723090813.303838-1-ravi.bangoria@… 3: ptrace PPC_DEBUG_FEATURE_DATA_BP_DAWR_ARCH_31 flag https://lore.kernel.org/linuxppc-dev/20200723093330.306341-1-ravi.bangoria@… Patches in this series applies fine on top of powerpc/next (9a77c4a0a125) plus above dependency patches. Ravi Bangoria (7): powerpc/watchpoint/kvm: Rename current DAWR macros and variables powerpc/watchpoint/kvm: Add infrastructure to support 2nd DAWR powerpc/watchpoint/kvm: Introduce new capability for 2nd DAWR powerpc/selftests/ptrace-hwbreak: Add testcases for 2nd DAWR powerpc/selftests/perf-hwbreak: Coalesce event creation code powerpc/selftests/perf-hwbreak: Add testcases for 2nd DAWR powerpc/selftests: Add selftest to test concurrent perf/ptrace events Documentation/virt/kvm/api.rst | 6 +- arch/powerpc/include/asm/hvcall.h | 2 + arch/powerpc/include/asm/kvm_host.h | 6 +- arch/powerpc/include/uapi/asm/kvm.h | 8 +- arch/powerpc/kernel/asm-offsets.c | 6 +- arch/powerpc/kvm/book3s_hv.c | 73 +- arch/powerpc/kvm/book3s_hv_nested.c | 15 +- arch/powerpc/kvm/book3s_hv_rmhandlers.S | 43 +- arch/powerpc/kvm/powerpc.c | 3 + include/uapi/linux/kvm.h | 1 + tools/arch/powerpc/include/uapi/asm/kvm.h | 8 +- .../selftests/powerpc/ptrace/.gitignore | 1 + .../testing/selftests/powerpc/ptrace/Makefile | 2 +- .../selftests/powerpc/ptrace/perf-hwbreak.c | 646 +++++++++++++++-- .../selftests/powerpc/ptrace/ptrace-hwbreak.c | 79 +++ .../powerpc/ptrace/ptrace-perf-hwbreak.c | 659 ++++++++++++++++++ 16 files changed, 1476 insertions(+), 82 deletions(-) create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-perf-hwbreak.c -- 2.26.2

5 years, 1 month

2
15
0 0

[PATCH bpf-next v1 0/8] bpf: BTF support for ksyms

by Hao Luo

This patch series extends the previously added __ksym externs with btf support. Right now the __ksym externs are treated as pure 64-bit scalar value. Libbpf replaces ld_imm64 insn of __ksym by its kernel address at load time. This patch series extend those externs with their btf info. Note that btf support for __ksym must come with the kernel btf that has VARs encoded to work properly. The corresponding chagnes in pahole is available at [1]. The first 5 patches in this series add support for general kernel global variables, which includes verifier checking (01/08), libbpf type checking (03/08) and btf_id resolving (04/08). The last 3 patches extends that capability further by introducing a helper bpf_per_cpu_ptr(), which allows accessing kernel percpu vars correctly (06/08). The tests of this feature were performed against the extended pahole. For kernel btf that does not have VARs encoded, the selftests will be skipped. [1] https://git.kernel.org/pub/scm/devel/pahole/pahole.git/commit/?id=f3d9054ba… rfc -> v1: - Encode VAR's btf_id for PSEUDO_BTF_ID. - More checks in verifier. Checking the btf_id passed as PSEUDO_BTF_ID is valid VAR, its name and type. - Checks in libbpf on type compatibility of ksyms. - Add bpf_per_cpu_ptr() to access kernel percpu vars. Introduced new ARG and RET types for this helper. Hao Luo (8): bpf: Introduce pseudo_btf_id bpf: Propagate BPF_PSEUDO_BTF_ID to uapi headers in /tools bpf: Introduce help function to validate ksym's type. bpf/libbpf: BTF support for typed ksyms bpf/selftests: ksyms_btf to test typed ksyms bpf: Introduce bpf_per_cpu_ptr() bpf: Propagate bpf_per_cpu_ptr() to /tools bpf/selftests: Test for bpf_per_cpu_ptr() include/linux/bpf.h | 3 + include/linux/btf.h | 26 +++ include/uapi/linux/bpf.h | 52 +++++- kernel/bpf/btf.c | 25 --- kernel/bpf/verifier.c | 128 ++++++++++++- kernel/trace/bpf_trace.c | 18 ++ tools/include/uapi/linux/bpf.h | 53 +++++- tools/lib/bpf/btf.c | 171 ++++++++++++++++++ tools/lib/bpf/btf.h | 2 + tools/lib/bpf/libbpf.c | 130 +++++++++++-- .../selftests/bpf/prog_tests/ksyms_btf.c | 81 +++++++++ .../selftests/bpf/progs/test_ksyms_btf.c | 36 ++++ 12 files changed, 665 insertions(+), 60 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/ksyms_btf.c create mode 100644 tools/testing/selftests/bpf/progs/test_ksyms_btf.c -- 2.28.0.220.ged08abb693-goog

5 years, 1 month

4
41
0 0

[PATCH 0/4] Support non-blocking pidfds

by Christian Brauner

Hi, Passing a non-blocking pidfd to waitid() currently has no effect, i.e. is not supported. There are users which would like to use waitid() on pidfds that are O_NONBLOCK and mix it with pidfds that are blocking and both pass them to waitid(). The expected behavior is to have waitid() return -EAGAIN for non-blocking pidfds and to block for blocking pidfds without needing to perform any additional checks for flags set on the pidfd before passing it to waitid(). Non-blocking pidfds will return EAGAIN from waitid() when no child process is ready yet. Returning -EAGAIN for non-blocking pidfds makes it easier for event loops that handle EAGAIN specially. It also makes the API more consistent and uniform. In essence, waitid() is treated like a read on a non-blocking pidfd or a recvmsg() on a non-blocking socket. With the addition of support for non-blocking pidfds we support the same functionality that sockets do. For sockets() recvmsg() supports MSG_DONTWAIT for pidfds waitid() supports WNOHANG. Both flags are per-call options. In contrast non-blocking pidfds and non-blocking sockets are a setting on an open file description affecting all threads in the calling process as well as other processes that hold file descriptors referring to the same open file description. Both behaviors, per call and per open file description, have genuine use-cases. A concrete use-case that was brought on-list (see [1]) was Josh's async pidfd library. Ever since the introduction of pidfds and more advanced async io various programming languages such as Rust have grown support for async event libraries. These libraries are created to help build epoll-based event loops around file descriptors. A common pattern is to automatically make all file descriptors they manage to O_NONBLOCK. For such libraries the EAGAIN error code is treated specially. When a function is called that returns EAGAIN the function isn't called again until the event loop indicates the the file descriptor is ready. Supporting EAGAIN when waiting on pidfds makes such libraries just work with little effort. Thanks! Christian [1]: https://lore.kernel.org/lkml/20200811181236.GA18763@localhost/ Christian Brauner (4): pidfd: support PIDFD_NONBLOCK in pidfd_open() exit: support non-blocking pidfds tests: port pidfd_wait to kselftest harness tests: add waitid() tests for non-blocking pidfds include/uapi/linux/pidfd.h | 12 + kernel/exit.c | 19 +- kernel/pid.c | 12 +- tools/testing/selftests/pidfd/pidfd.h | 4 + tools/testing/selftests/pidfd/pidfd_wait.c | 298 +++++++++------------ 5 files changed, 161 insertions(+), 184 deletions(-) create mode 100644 include/uapi/linux/pidfd.h base-commit: d012a7190fc1fd72ed48911e77ca97ba4521bccd -- 2.28.0

5 years, 1 month

2
9
0 0

[PATCH] selftests: vm: add fragment CONFIG_GUP_BENCHMARK

by Anatoly Pugachev

When running gup_benchmark test the following output states that the config options is missing. $ sudo ./gup_benchmark open: No such file or directory $ sudo strace -e trace=file ./gup_benchmark 2>&1 | tail -3 openat(AT_FDCWD, "/sys/kernel/debug/gup_benchmark", O_RDWR) = -1 ENOENT (No such file or directory) open: No such file or directory +++ exited with 1 +++ Fix it by adding config option fragment. Fixes: 64c349f4ae78 ("mm: add infrastructure for get_user_pages_fast() benchmarking") Signed-off-by: Anatoly Pugachev <matorola(a)gmail.com> CC: Jiri Kosina <trivial(a)kernel.org> CC: Shuah Khan <shuah(a)kernel.org> --- tools/testing/selftests/vm/config | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/vm/config b/tools/testing/selftests/vm/config index 3ba674b64fa9..69dd0d1aa30b 100644 --- a/tools/testing/selftests/vm/config +++ b/tools/testing/selftests/vm/config @@ -3,3 +3,4 @@ CONFIG_USERFAULTFD=y CONFIG_TEST_VMALLOC=m CONFIG_DEVICE_PRIVATE=y CONFIG_TEST_HMM=m +CONFIG_GUP_BENCHMARK=y -- 2.27.0

5 years, 1 month

2
1
0 0

[PATCH v3 0/5] arm64: vdso: getcpu() support

by Mark Brown

Some applications, especially tracing ones, benefit from avoiding the syscall overhead for getcpu() so it is common for architectures to have vDSO implementations. Add one for arm64, using TPIDRRO_EL0 to pass a pointer to per-CPU data rather than just store the immediate value in order to allow for future extensibility. It is questionable if something TPIDRRO_EL0 based is worthwhile at all on current kernels, since v4.18 we have had support for restartable sequences which can be used to provide a sched_getcpu() implementation with generally better performance than the vDSO approach on architectures which have that[1]. Work is ongoing to implement this for glibc: https://lore.kernel.org/lkml/20200527185130.5604-3-mathieu.desnoyers@effici… but is not yet merged and will need similar work for other userspaces. The main advantages for the vDSO implementation are the node parameter (though this is a static mapping to CPU number so could be looked up separately when processing data if it's needed, it shouldn't need to be in the hot path) and ease of implementation for users. This is currently not compatible with KPTI due to the use of TPIDRRO_EL0 by the KPTI trampoline, this could be addressed by reinitializing that system register in the return path but I have found it hard to justify adding that overhead for all users for something that is essentially a profiling optimization which is likely to get superceeded by a more modern implementation - if there are other uses for the per-CPU data then the balance might change here. This builds on work done by Kristina Martsenko some time ago but is a new implementation. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… v3: - Rebase on v5.9-rc1. - Drop in progress portions of the series. v2: - Rebase on v5.8-rc3. - Add further cleanup patches & a first draft of multi-page support. Mark Brown (5): arm64: vdso: Provide a define when building the vDSO arm64: vdso: Add per-CPU data arm64: vdso: Initialise the per-CPU vDSO data arm64: vdso: Add getcpu() implementation selftests: vdso: Support arm64 in getcpu() test arch/arm64/include/asm/processor.h | 12 +---- arch/arm64/include/asm/vdso/datapage.h | 54 +++++++++++++++++++ arch/arm64/kernel/process.c | 26 ++++++++- arch/arm64/kernel/vdso.c | 33 +++++++++++- arch/arm64/kernel/vdso/Makefile | 4 +- arch/arm64/kernel/vdso/vdso.lds.S | 1 + arch/arm64/kernel/vdso/vgetcpu.c | 48 +++++++++++++++++ .../testing/selftests/vDSO/vdso_test_getcpu.c | 10 ++++ 8 files changed, 172 insertions(+), 16 deletions(-) create mode 100644 arch/arm64/include/asm/vdso/datapage.h create mode 100644 arch/arm64/kernel/vdso/vgetcpu.c -- 2.20.1

5 years, 1 month

3
8
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[PATCH v2 1/2] kunit: tool: fix running kunit_tool from outside kernel tree

by Brendan Higgins

Currently kunit_tool does not work correctly when executed from a path outside of the kernel tree, so make sure that the current working directory is correct and the kunit_dir is properly initialized before running. Signed-off-by: Brendan Higgins <brendanhiggins(a)google.com> --- tools/testing/kunit/kunit.py | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py index 425ef40067e7e..e2caf4e24ecb2 100755 --- a/tools/testing/kunit/kunit.py +++ b/tools/testing/kunit/kunit.py @@ -237,9 +237,13 @@ def main(argv, linux=None): cli_args = parser.parse_args(argv) + if get_kernel_root_path(): + os.chdir(get_kernel_root_path()) + if cli_args.subcommand == 'run': if not os.path.exists(cli_args.build_dir): os.mkdir(cli_args.build_dir) + create_default_kunitconfig() if not linux: linux = kunit_kernel.LinuxSourceTree() @@ -257,6 +261,7 @@ def main(argv, linux=None): if cli_args.build_dir: if not os.path.exists(cli_args.build_dir): os.mkdir(cli_args.build_dir) + create_default_kunitconfig() if not linux: linux = kunit_kernel.LinuxSourceTree() @@ -270,10 +275,6 @@ def main(argv, linux=None): if result.status != KunitStatus.SUCCESS: sys.exit(1) elif cli_args.subcommand == 'build': - if cli_args.build_dir: - if not os.path.exists(cli_args.build_dir): - os.mkdir(cli_args.build_dir) - if not linux: linux = kunit_kernel.LinuxSourceTree() @@ -288,10 +289,6 @@ def main(argv, linux=None): if result.status != KunitStatus.SUCCESS: sys.exit(1) elif cli_args.subcommand == 'exec': - if cli_args.build_dir: - if not os.path.exists(cli_args.build_dir): - os.mkdir(cli_args.build_dir) - if not linux: linux = kunit_kernel.LinuxSourceTree() base-commit: 30185b69a2d533c4ba6ca926b8390ce7de495e29 -- 2.28.0.236.gb10cc79966-goog

5 years, 1 month

2
2
0 0

[PATCH 1/2] kunit: support failure from dynamic analysis tools

by Uriel Guajardo

Adds an API to allow dynamic analysis tools to fail the currently running KUnit test case. - Always places the kunit test in the task_struct to allow other tools to access the currently running KUnit test. - Creates a new header file to avoid circular dependencies that could be created from the test.h file. Requires KASAN-KUnit integration patch to access the kunit test from task_struct: https://lore.kernel.org/linux-kselftest/20200606040349.246780-2-davidgow@go… Signed-off-by: Uriel Guajardo <urielguajardo(a)google.com> --- include/kunit/test-bug.h | 24 ++++++++++++++++++++++++ include/kunit/test.h | 1 + lib/kunit/test.c | 10 ++++++---- 3 files changed, 31 insertions(+), 4 deletions(-) create mode 100644 include/kunit/test-bug.h diff --git a/include/kunit/test-bug.h b/include/kunit/test-bug.h new file mode 100644 index 000000000000..283c19ec328f --- /dev/null +++ b/include/kunit/test-bug.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * KUnit API allowing dynamic analysis tools to interact with KUnit tests + * + * Copyright (C) 2020, Google LLC. + * Author: Uriel Guajardo <urielguajardo(a)google.com> + */ + +#ifndef _KUNIT_TEST_BUG_H +#define _KUNIT_TEST_BUG_H + +#if IS_ENABLED(CONFIG_KUNIT) + +extern void kunit_fail_current_test(void); + +#else + +static inline void kunit_fail_current_test(void) +{ +} + +#endif + +#endif /* _KUNIT_TEST_BUG_H */ diff --git a/include/kunit/test.h b/include/kunit/test.h index 3391f38389f8..81bf43a1abda 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -11,6 +11,7 @@ #include <kunit/assert.h> #include <kunit/try-catch.h> +#include <kunit/test-bug.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> diff --git a/lib/kunit/test.c b/lib/kunit/test.c index dcc35fd30d95..d8189d827368 100644 --- a/lib/kunit/test.c +++ b/lib/kunit/test.c @@ -16,6 +16,12 @@ #include "string-stream.h" #include "try-catch-impl.h" +void kunit_fail_current_test(void) +{ + if (current->kunit_test) + kunit_set_failure(current->kunit_test); +} + static void kunit_print_tap_version(void) { static bool kunit_has_printed_tap_version; @@ -284,9 +290,7 @@ static void kunit_try_run_case(void *data) struct kunit_suite *suite = ctx->suite; struct kunit_case *test_case = ctx->test_case; -#if (IS_ENABLED(CONFIG_KASAN) && IS_ENABLED(CONFIG_KUNIT)) current->kunit_test = test; -#endif /* IS_ENABLED(CONFIG_KASAN) && IS_ENABLED(CONFIG_KUNIT) */ /* * kunit_run_case_internal may encounter a fatal error; if it does, @@ -602,9 +606,7 @@ void kunit_cleanup(struct kunit *test) spin_unlock(&test->lock); kunit_remove_resource(test, res); } -#if (IS_ENABLED(CONFIG_KASAN) && IS_ENABLED(CONFIG_KUNIT)) current->kunit_test = NULL; -#endif /* IS_ENABLED(CONFIG_KASAN) && IS_ENABLED(CONFIG_KUNIT)*/ } EXPORT_SYMBOL_GPL(kunit_cleanup); -- 2.28.0.163.g6104cc2f0b6-goog

5 years, 1 month

2
3
0 0

[PATCH] selftests: use "$(MAKE)" instead of "make" for headers_install

by Denys Vlasenko

If top make invocation uses -j4 or larger, this patch reduces "make headers_install" subtask run time from 30 to 7 seconds. CC: Shuah Khan <shuah(a)kernel.org> CC: Shuah Khan <skhan(a)linuxfoundation.org> CC: linux-kselftest(a)vger.kernel.org CC: linux-kernel(a)vger.kernel.org Signed-off-by: Denys Vlasenko <dvlasenk(a)redhat.com> --- tools/testing/selftests/lib.mk | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk index 7a17ea815736..51124b962d56 100644 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -47,9 +47,9 @@ ARCH ?= $(SUBARCH) khdr: ifndef KSFT_KHDR_INSTALL_DONE ifeq (1,$(DEFAULT_INSTALL_HDR_PATH)) - make --no-builtin-rules ARCH=$(ARCH) -C $(top_srcdir) headers_install + $(MAKE) --no-builtin-rules ARCH=$(ARCH) -C $(top_srcdir) headers_install else - make --no-builtin-rules INSTALL_HDR_PATH=$$OUTPUT/usr \ + $(MAKE) --no-builtin-rules INSTALL_HDR_PATH=$$OUTPUT/usr \ ARCH=$(ARCH) -C $(top_srcdir) headers_install endif endif -- 2.25.0

5 years, 1 month

2
1
0 0

[PATCH] selftests/vm: Fix display of page size in map_hugetlb

by Christophe Leroy

The displayed size is in bytes while the text says it is in kB. Shift it by 10 to really display kBytes. Fixes: fa7b9a805c79 ("tools/selftest/vm: allow choosing mem size and page size in map_hugetlb") Cc: stable(a)vger.kernel.org Signed-off-by: Christophe Leroy <christophe.leroy(a)csgroup.eu> --- tools/testing/selftests/vm/map_hugetlb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/vm/map_hugetlb.c b/tools/testing/selftests/vm/map_hugetlb.c index 6af951900aa3..312889edb84a 100644 --- a/tools/testing/selftests/vm/map_hugetlb.c +++ b/tools/testing/selftests/vm/map_hugetlb.c @@ -83,7 +83,7 @@ int main(int argc, char **argv) } if (shift) - printf("%u kB hugepages\n", 1 << shift); + printf("%u kB hugepages\n", 1 << (shift - 10)); else printf("Default size hugepages\n"); printf("Mapping %lu Mbytes\n", (unsigned long)length >> 20); -- 2.25.0

5 years, 1 month

1
0
0 0

[PATCH v36 22/24] selftests/x86: Add a selftest for SGX

by Jarkko Sakkinen

Add a selftest for SGX. It is a trivial test where a simple enclave copies one 64-bit word of memory between two memory locations. Cc: linux-kselftest(a)vger.kernel.org Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen(a)linux.intel.com> --- tools/testing/selftests/Makefile | 1 + tools/testing/selftests/sgx/.gitignore | 2 + tools/testing/selftests/sgx/Makefile | 53 +++ tools/testing/selftests/sgx/call.S | 54 +++ tools/testing/selftests/sgx/defines.h | 21 + tools/testing/selftests/sgx/load.c | 282 +++++++++++++ tools/testing/selftests/sgx/main.c | 199 +++++++++ tools/testing/selftests/sgx/main.h | 38 ++ tools/testing/selftests/sgx/sigstruct.c | 395 ++++++++++++++++++ tools/testing/selftests/sgx/test_encl.c | 20 + tools/testing/selftests/sgx/test_encl.lds | 40 ++ .../selftests/sgx/test_encl_bootstrap.S | 89 ++++ 12 files changed, 1194 insertions(+) create mode 100644 tools/testing/selftests/sgx/.gitignore create mode 100644 tools/testing/selftests/sgx/Makefile create mode 100644 tools/testing/selftests/sgx/call.S create mode 100644 tools/testing/selftests/sgx/defines.h create mode 100644 tools/testing/selftests/sgx/load.c create mode 100644 tools/testing/selftests/sgx/main.c create mode 100644 tools/testing/selftests/sgx/main.h create mode 100644 tools/testing/selftests/sgx/sigstruct.c create mode 100644 tools/testing/selftests/sgx/test_encl.c create mode 100644 tools/testing/selftests/sgx/test_encl.lds create mode 100644 tools/testing/selftests/sgx/test_encl_bootstrap.S diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 1195bd85af38..ec7be6d5a10d 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -64,6 +64,7 @@ TARGETS += user TARGETS += vm TARGETS += x86 TARGETS += zram +TARGETS += sgx #Please keep the TARGETS list alphabetically sorted # Run "make quicktest=1 run_tests" or # "make quicktest=1 kselftest" from top level Makefile diff --git a/tools/testing/selftests/sgx/.gitignore b/tools/testing/selftests/sgx/.gitignore new file mode 100644 index 000000000000..fbaf0bda9a92 --- /dev/null +++ b/tools/testing/selftests/sgx/.gitignore @@ -0,0 +1,2 @@ +test_sgx +test_encl.elf diff --git a/tools/testing/selftests/sgx/Makefile b/tools/testing/selftests/sgx/Makefile new file mode 100644 index 000000000000..95e5c4df8014 --- /dev/null +++ b/tools/testing/selftests/sgx/Makefile @@ -0,0 +1,53 @@ +top_srcdir = ../../../.. + +include ../lib.mk + +.PHONY: all clean + +CAN_BUILD_X86_64 := $(shell ../x86/check_cc.sh $(CC) \ + ../x86/trivial_64bit_program.c) + +ifndef OBJCOPY +OBJCOPY := $(CROSS_COMPILE)objcopy +endif + +INCLUDES := -I$(top_srcdir)/tools/include +HOST_CFLAGS := -Wall -Werror -g $(INCLUDES) -fPIC -z noexecstack +ENCL_CFLAGS := -Wall -Werror -static -nostdlib -nostartfiles -fPIC \ + -fno-stack-protector -mrdrnd $(INCLUDES) + +TEST_CUSTOM_PROGS := $(OUTPUT)/test_sgx $(OUTPUT)/test_encl.elf + +ifeq ($(CAN_BUILD_X86_64), 1) +all: $(TEST_CUSTOM_PROGS) +endif + +$(OUTPUT)/test_sgx: $(OUTPUT)/main.o \ + $(OUTPUT)/load.o \ + $(OUTPUT)/sigstruct.o \ + $(OUTPUT)/call.o + $(CC) $(HOST_CFLAGS) -o $@ $^ -lcrypto + +$(OUTPUT)/main.o: main.c + $(CC) $(HOST_CFLAGS) -c $< -o $@ + +$(OUTPUT)/load.o: load.c + $(CC) $(HOST_CFLAGS) -c $< -o $@ + +$(OUTPUT)/sigstruct.o: sigstruct.c + $(CC) $(HOST_CFLAGS) -c $< -o $@ + +$(OUTPUT)/call.o: call.S + $(CC) $(HOST_CFLAGS) -c $< -o $@ + +$(OUTPUT)/test_encl.elf: test_encl.lds test_encl.c test_encl_bootstrap.S + $(CC) $(ENCL_CFLAGS) -T $^ -o $@ + +EXTRA_CLEAN := \ + $(OUTPUT)/test_encl.elf \ + $(OUTPUT)/load.o \ + $(OUTPUT)/call.o \ + $(OUTPUT)/main.o \ + $(OUTPUT)/sigstruct.o \ + $(OUTPUT)/test_sgx \ + $(OUTPUT)/test_sgx.o \ diff --git a/tools/testing/selftests/sgx/call.S b/tools/testing/selftests/sgx/call.S new file mode 100644 index 000000000000..77131e83db42 --- /dev/null +++ b/tools/testing/selftests/sgx/call.S @@ -0,0 +1,54 @@ +/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ +/** +* Copyright(c) 2016-18 Intel Corporation. +*/ + + .text + + .macro ENCLU + .byte 0x0f, 0x01, 0xd7 + .endm + + .text + + .global sgx_call_vdso +sgx_call_vdso: + .cfi_startproc + push %r15 + .cfi_adjust_cfa_offset 8 + .cfi_rel_offset %r15, 0 + push %r14 + .cfi_adjust_cfa_offset 8 + .cfi_rel_offset %r14, 0 + push %r13 + .cfi_adjust_cfa_offset 8 + .cfi_rel_offset %r13, 0 + push %r12 + .cfi_adjust_cfa_offset 8 + .cfi_rel_offset %r12, 0 + push %rbx + .cfi_adjust_cfa_offset 8 + .cfi_rel_offset %rbx, 0 + push $0 + .cfi_adjust_cfa_offset 8 + push 0x48(%rsp) + .cfi_adjust_cfa_offset 8 + push 0x48(%rsp) + .cfi_adjust_cfa_offset 8 + push 0x48(%rsp) + .cfi_adjust_cfa_offset 8 + call *eenter(%rip) + add $0x20, %rsp + .cfi_adjust_cfa_offset -0x20 + pop %rbx + .cfi_adjust_cfa_offset -8 + pop %r12 + .cfi_adjust_cfa_offset -8 + pop %r13 + .cfi_adjust_cfa_offset -8 + pop %r14 + .cfi_adjust_cfa_offset -8 + pop %r15 + .cfi_adjust_cfa_offset -8 + ret + .cfi_endproc diff --git a/tools/testing/selftests/sgx/defines.h b/tools/testing/selftests/sgx/defines.h new file mode 100644 index 000000000000..be8969922804 --- /dev/null +++ b/tools/testing/selftests/sgx/defines.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright(c) 2016-19 Intel Corporation. + */ + +#ifndef DEFINES_H +#define DEFINES_H + +#include <stdint.h> + +#define PAGE_SIZE 4096 +#define PAGE_MASK (~(PAGE_SIZE - 1)) + +#define __aligned(x) __attribute__((__aligned__(x))) +#define __packed __attribute__((packed)) + +#include "../../../../arch/x86/kernel/cpu/sgx/arch.h" +#include "../../../../arch/x86/include/asm/enclu.h" +#include "../../../../arch/x86/include/uapi/asm/sgx.h" + +#endif /* DEFINES_H */ diff --git a/tools/testing/selftests/sgx/load.c b/tools/testing/selftests/sgx/load.c new file mode 100644 index 000000000000..91407036541c --- /dev/null +++ b/tools/testing/selftests/sgx/load.c @@ -0,0 +1,282 @@ +// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) +// Copyright(c) 2016-18 Intel Corporation. + +#include <assert.h> +#include <elf.h> +#include <errno.h> +#include <fcntl.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/types.h> +#include "defines.h" +#include "main.h" + +void encl_delete(struct encl *encl) +{ + if (encl->encl_base) + munmap((void *)encl->encl_base, encl->encl_size); + + if (encl->bin) + munmap(encl->bin, encl->bin_size); + + if (encl->fd) + close(encl->fd); + + if (encl->segment_tbl) + free(encl->segment_tbl); + + memset(encl, 0, sizeof(*encl)); +} + +static bool encl_map_bin(const char *path, struct encl *encl) +{ + struct stat sb; + void *bin; + int ret; + int fd; + + fd = open(path, O_RDONLY); + if (fd == -1) { + perror("open()"); + return false; + } + + ret = stat(path, &sb); + if (ret) { + perror("stat()"); + goto err; + } + + bin = mmap(NULL, sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0); + if (bin == MAP_FAILED) { + perror("mmap()"); + goto err; + } + + encl->bin = bin; + encl->bin_size = sb.st_size; + + close(fd); + return true; + +err: + close(fd); + return false; +} + +static bool encl_ioc_create(struct encl *encl) +{ + struct sgx_secs *secs = &encl->secs; + struct sgx_enclave_create ioc; + int rc; + + assert(encl->encl_base != 0); + + memset(secs, 0, sizeof(*secs)); + secs->ssa_frame_size = 1; + secs->attributes = SGX_ATTR_MODE64BIT; + secs->xfrm = 3; + secs->base = encl->encl_base; + secs->size = encl->encl_size; + + ioc.src = (unsigned long)secs; + rc = ioctl(encl->fd, SGX_IOC_ENCLAVE_CREATE, &ioc); + if (rc) { + fprintf(stderr, "SGX_IOC_ENCLAVE_CREATE failed: errno=%d\n", + errno); + munmap((void *)secs->base, encl->encl_size); + return false; + } + + return true; +} + +static bool encl_ioc_add_pages(struct encl *encl, struct encl_segment *seg) +{ + struct sgx_enclave_add_pages ioc; + struct sgx_secinfo secinfo; + int rc; + + memset(&secinfo, 0, sizeof(secinfo)); + secinfo.flags = seg->flags; + + ioc.src = (uint64_t)encl->src + seg->offset; + ioc.offset = seg->offset; + ioc.length = seg->size; + ioc.secinfo = (unsigned long)&secinfo; + ioc.flags = SGX_PAGE_MEASURE; + + rc = ioctl(encl->fd, SGX_IOC_ENCLAVE_ADD_PAGES, &ioc); + if (rc) { + fprintf(stderr, "SGX_IOC_ENCLAVE_ADD_PAGES failed: errno=%d.\n", + errno); + return false; + } + + if (ioc.count != ioc.length) { + fprintf(stderr, "A segment not fully processed.\n"); + return false; + } + + return true; +} + +bool encl_load(const char *path, struct encl *encl) +{ + Elf64_Phdr *phdr_tbl; + off_t src_offset; + Elf64_Ehdr *ehdr; + int i, j; + int ret; + + memset(encl, 0, sizeof(*encl)); + + ret = open("/dev/sgx/enclave", O_RDWR); + if (ret < 0) { + fprintf(stderr, "Unable to open /dev/sgx\n"); + goto err; + } + + encl->fd = ret; + + if (!encl_map_bin(path, encl)) + goto err; + + ehdr = encl->bin; + phdr_tbl = encl->bin + ehdr->e_phoff; + + for (i = 0; i < ehdr->e_phnum; i++) { + Elf64_Phdr *phdr = &phdr_tbl[i]; + + if (phdr->p_type == PT_LOAD) + encl->nr_segments++; + } + + encl->segment_tbl = calloc(encl->nr_segments, + sizeof(struct encl_segment)); + if (!encl->segment_tbl) + goto err; + + for (i = 0, j = 0; i < ehdr->e_phnum; i++) { + Elf64_Phdr *phdr = &phdr_tbl[i]; + unsigned int flags = phdr->p_flags; + struct encl_segment *seg; + + if (phdr->p_type != PT_LOAD) + continue; + + seg = &encl->segment_tbl[j]; + + if (!!(flags & ~(PF_R | PF_W | PF_X))) { + fprintf(stderr, + "%d has invalid segment flags 0x%02x.\n", i, + phdr->p_flags); + goto err; + } + + if (j == 0 && flags != (PF_R | PF_W)) { + fprintf(stderr, + "TCS has invalid segment flags 0x%02x.\n", + phdr->p_flags); + goto err; + } + + if (j == 0) { + src_offset = (phdr->p_offset & PAGE_MASK) - src_offset; + + seg->prot = PROT_READ | PROT_WRITE; + seg->flags = SGX_PAGE_TYPE_TCS << 8; + } else { + seg->prot = (phdr->p_flags & PF_R) ? PROT_READ : 0; + seg->prot |= (phdr->p_flags & PF_W) ? PROT_WRITE : 0; + seg->prot |= (phdr->p_flags & PF_X) ? PROT_EXEC : 0; + seg->flags = (SGX_PAGE_TYPE_REG << 8) | seg->prot; + } + + seg->offset = (phdr->p_offset & PAGE_MASK) - src_offset; + seg->size = (phdr->p_filesz + PAGE_SIZE - 1) & PAGE_MASK; + + printf("0x%016lx 0x%016lx 0x%02x\n", seg->offset, seg->size, + seg->prot); + + j++; + } + + assert(j == encl->nr_segments); + + encl->src = encl->bin + src_offset; + encl->src_size = encl->segment_tbl[j - 1].offset + + encl->segment_tbl[j - 1].size; + + for (encl->encl_size = 4096; encl->encl_size < encl->src_size; ) + encl->encl_size <<= 1; + + return true; + +err: + encl_delete(encl); + return false; +} + +static bool encl_map_area(struct encl *encl) +{ + size_t encl_size = encl->encl_size; + void *area; + + area = mmap(NULL, encl_size * 2, PROT_NONE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + if (area == MAP_FAILED) { + perror("mmap"); + return false; + } + + encl->encl_base = ((uint64_t)area + encl_size - 1) & ~(encl_size - 1); + + munmap(area, encl->encl_base - (uint64_t)area); + munmap((void *)(encl->encl_base + encl_size), + (uint64_t)area + encl_size - encl->encl_base); + + return true; +} + +bool encl_build(struct encl *encl) +{ + struct sgx_enclave_init ioc; + int ret; + int i; + + if (!encl_map_area(encl)) + return false; + + if (!encl_ioc_create(encl)) + return false; + + /* + * Pages must be added before mapping VMAs because their permissions + * cap the VMA permissions. + */ + for (i = 0; i < encl->nr_segments; i++) { + struct encl_segment *seg = &encl->segment_tbl[i]; + + if (!encl_ioc_add_pages(encl, seg)) + return false; + } + + ioc.sigstruct = (uint64_t)&encl->sigstruct; + ret = ioctl(encl->fd, SGX_IOC_ENCLAVE_INIT, &ioc); + if (ret) { + fprintf(stderr, "SGX_IOC_ENCLAVE_INIT failed: errno=%d\n", + errno); + return false; + } + + return true; +} diff --git a/tools/testing/selftests/sgx/main.c b/tools/testing/selftests/sgx/main.c new file mode 100644 index 000000000000..8d95569e7a66 --- /dev/null +++ b/tools/testing/selftests/sgx/main.c @@ -0,0 +1,199 @@ +// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) +// Copyright(c) 2016-18 Intel Corporation. + +#include <elf.h> +#include <errno.h> +#include <fcntl.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/types.h> +#include "defines.h" +#include "main.h" + +static const uint64_t MAGIC = 0x1122334455667788ULL; +vdso_sgx_enter_enclave_t eenter; + +struct vdso_symtab { + Elf64_Sym *elf_symtab; + const char *elf_symstrtab; + Elf64_Word *elf_hashtab; +}; + +static void *vdso_get_base_addr(char *envp[]) +{ + Elf64_auxv_t *auxv; + int i; + + for (i = 0; envp[i]; i++) + ; + + auxv = (Elf64_auxv_t *)&envp[i + 1]; + + for (i = 0; auxv[i].a_type != AT_NULL; i++) { + if (auxv[i].a_type == AT_SYSINFO_EHDR) + return (void *)auxv[i].a_un.a_val; + } + + return NULL; +} + +static Elf64_Dyn *vdso_get_dyntab(void *addr) +{ + Elf64_Ehdr *ehdr = addr; + Elf64_Phdr *phdrtab = addr + ehdr->e_phoff; + int i; + + for (i = 0; i < ehdr->e_phnum; i++) + if (phdrtab[i].p_type == PT_DYNAMIC) + return addr + phdrtab[i].p_offset; + + return NULL; +} + +static void *vdso_get_dyn(void *addr, Elf64_Dyn *dyntab, Elf64_Sxword tag) +{ + int i; + + for (i = 0; dyntab[i].d_tag != DT_NULL; i++) + if (dyntab[i].d_tag == tag) + return addr + dyntab[i].d_un.d_ptr; + + return NULL; +} + +static bool vdso_get_symtab(void *addr, struct vdso_symtab *symtab) +{ + Elf64_Dyn *dyntab = vdso_get_dyntab(addr); + + symtab->elf_symtab = vdso_get_dyn(addr, dyntab, DT_SYMTAB); + if (!symtab->elf_symtab) + return false; + + symtab->elf_symstrtab = vdso_get_dyn(addr, dyntab, DT_STRTAB); + if (!symtab->elf_symstrtab) + return false; + + symtab->elf_hashtab = vdso_get_dyn(addr, dyntab, DT_HASH); + if (!symtab->elf_hashtab) + return false; + + return true; +} + +static unsigned long elf_sym_hash(const char *name) +{ + unsigned long h = 0, high; + + while (*name) { + h = (h << 4) + *name++; + high = h & 0xf0000000; + + if (high) + h ^= high >> 24; + + h &= ~high; + } + + return h; +} + +static Elf64_Sym *vdso_symtab_get(struct vdso_symtab *symtab, const char *name) +{ + Elf64_Word bucketnum = symtab->elf_hashtab[0]; + Elf64_Word *buckettab = &symtab->elf_hashtab[2]; + Elf64_Word *chaintab = &symtab->elf_hashtab[2 + bucketnum]; + Elf64_Sym *sym; + Elf64_Word i; + + for (i = buckettab[elf_sym_hash(name) % bucketnum]; i != STN_UNDEF; + i = chaintab[i]) { + sym = &symtab->elf_symtab[i]; + if (!strcmp(name, &symtab->elf_symstrtab[sym->st_name])) + return sym; + } + + return NULL; +} + +int main(int argc, char *argv[], char *envp[]) +{ + struct sgx_enclave_exception exception; + struct vdso_symtab symtab; + Elf64_Sym *eenter_sym; + uint64_t result = 0; + struct encl encl; + unsigned int i; + void *addr; + + if (!encl_load("test_encl.elf", &encl)) + goto err; + + if (!encl_measure(&encl)) + goto err; + + if (!encl_build(&encl)) + goto err; + + /* + * An enclave consumer only must do this. + */ + for (i = 0; i < encl.nr_segments; i++) { + struct encl_segment *seg = &encl.segment_tbl[i]; + + addr = mmap((void *)encl.encl_base + seg->offset, seg->size, + seg->prot, MAP_SHARED | MAP_FIXED, encl.fd, 0); + if (addr == MAP_FAILED) { + fprintf(stderr, "mmap() failed, errno=%d.\n", errno); + exit(1); + } + } + + memset(&exception, 0, sizeof(exception)); + + addr = vdso_get_base_addr(envp); + if (!addr) + goto err; + + if (!vdso_get_symtab(addr, &symtab)) + goto err; + + eenter_sym = vdso_symtab_get(&symtab, "__vdso_sgx_enter_enclave"); + if (!eenter_sym) + goto err; + + eenter = addr + eenter_sym->st_value; + + sgx_call_vdso((void *)&MAGIC, &result, 0, EENTER, NULL, NULL, + (void *)encl.encl_base, &exception, NULL); + if (result != MAGIC) { + printf("FAIL: sgx_call_vdso(), expected: 0x%lx, got: 0x%lx\n", + MAGIC, result); + goto err; + } + + /* Invoke the vDSO directly. */ + result = 0; + eenter((unsigned long)&MAGIC, (unsigned long)&result, 0, EENTER, 0, 0, + (void *)encl.encl_base, &exception, NULL); + if (result != MAGIC) { + printf("FAIL: eenter(), expected: 0x%lx, got: 0x%lx\n", + MAGIC, result); + goto err; + } + + printf("SUCCESS\n"); + encl_delete(&encl); + exit(0); + +err: + encl_delete(&encl); + exit(1); +} diff --git a/tools/testing/selftests/sgx/main.h b/tools/testing/selftests/sgx/main.h new file mode 100644 index 000000000000..999422cc7343 --- /dev/null +++ b/tools/testing/selftests/sgx/main.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright(c) 2016-19 Intel Corporation. + */ + +#ifndef MAIN_H +#define MAIN_H + +struct encl_segment { + off_t offset; + size_t size; + unsigned int prot; + unsigned int flags; +}; + +struct encl { + int fd; + void *bin; + off_t bin_size; + void *src; + size_t src_size; + size_t encl_size; + off_t encl_base; + unsigned int nr_segments; + struct encl_segment *segment_tbl; + struct sgx_secs secs; + struct sgx_sigstruct sigstruct; +}; + +void encl_delete(struct encl *ctx); +bool encl_load(const char *path, struct encl *encl); +bool encl_measure(struct encl *encl); +bool encl_build(struct encl *encl); + +int sgx_call_vdso(void *rdi, void *rsi, long rdx, u32 leaf, void *r8, void *r9, + void *tcs, struct sgx_enclave_exception *ei, void *cb); + +#endif /* MAIN_H */ diff --git a/tools/testing/selftests/sgx/sigstruct.c b/tools/testing/selftests/sgx/sigstruct.c new file mode 100644 index 000000000000..ceddad478672 --- /dev/null +++ b/tools/testing/selftests/sgx/sigstruct.c @@ -0,0 +1,395 @@ +// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) +// Copyright(c) 2016-18 Intel Corporation. + +#define _GNU_SOURCE +#include <assert.h> +#include <getopt.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> +#include <openssl/err.h> +#include <openssl/pem.h> +#include "defines.h" +#include "main.h" + +struct q1q2_ctx { + BN_CTX *bn_ctx; + BIGNUM *m; + BIGNUM *s; + BIGNUM *q1; + BIGNUM *qr; + BIGNUM *q2; +}; + +static void free_q1q2_ctx(struct q1q2_ctx *ctx) +{ + BN_CTX_free(ctx->bn_ctx); + BN_free(ctx->m); + BN_free(ctx->s); + BN_free(ctx->q1); + BN_free(ctx->qr); + BN_free(ctx->q2); +} + +static bool alloc_q1q2_ctx(const uint8_t *s, const uint8_t *m, + struct q1q2_ctx *ctx) +{ + ctx->bn_ctx = BN_CTX_new(); + ctx->s = BN_bin2bn(s, SGX_MODULUS_SIZE, NULL); + ctx->m = BN_bin2bn(m, SGX_MODULUS_SIZE, NULL); + ctx->q1 = BN_new(); + ctx->qr = BN_new(); + ctx->q2 = BN_new(); + + if (!ctx->bn_ctx || !ctx->s || !ctx->m || !ctx->q1 || !ctx->qr || + !ctx->q2) { + free_q1q2_ctx(ctx); + return false; + } + + return true; +} + +static bool calc_q1q2(const uint8_t *s, const uint8_t *m, uint8_t *q1, + uint8_t *q2) +{ + struct q1q2_ctx ctx; + + if (!alloc_q1q2_ctx(s, m, &ctx)) { + fprintf(stderr, "Not enough memory for Q1Q2 calculation\n"); + return false; + } + + if (!BN_mul(ctx.q1, ctx.s, ctx.s, ctx.bn_ctx)) + goto out; + + if (!BN_div(ctx.q1, ctx.qr, ctx.q1, ctx.m, ctx.bn_ctx)) + goto out; + + if (BN_num_bytes(ctx.q1) > SGX_MODULUS_SIZE) { + fprintf(stderr, "Too large Q1 %d bytes\n", + BN_num_bytes(ctx.q1)); + goto out; + } + + if (!BN_mul(ctx.q2, ctx.s, ctx.qr, ctx.bn_ctx)) + goto out; + + if (!BN_div(ctx.q2, NULL, ctx.q2, ctx.m, ctx.bn_ctx)) + goto out; + + if (BN_num_bytes(ctx.q2) > SGX_MODULUS_SIZE) { + fprintf(stderr, "Too large Q2 %d bytes\n", + BN_num_bytes(ctx.q2)); + goto out; + } + + BN_bn2bin(ctx.q1, q1); + BN_bn2bin(ctx.q2, q2); + + free_q1q2_ctx(&ctx); + return true; +out: + free_q1q2_ctx(&ctx); + return false; +} + +struct sgx_sigstruct_payload { + struct sgx_sigstruct_header header; + struct sgx_sigstruct_body body; +}; + +static bool check_crypto_errors(void) +{ + int err; + bool had_errors = false; + const char *filename; + int line; + char str[256]; + + for ( ; ; ) { + if (ERR_peek_error() == 0) + break; + + had_errors = true; + err = ERR_get_error_line(&filename, &line); + ERR_error_string_n(err, str, sizeof(str)); + fprintf(stderr, "crypto: %s: %s:%d\n", str, filename, line); + } + + return had_errors; +} + +static inline const BIGNUM *get_modulus(RSA *key) +{ +#if OPENSSL_VERSION_NUMBER < 0x10100000L + return key->n; +#else + const BIGNUM *n; + + RSA_get0_key(key, &n, NULL, NULL); + return n; +#endif +} + +static RSA *gen_sign_key(void) +{ + BIGNUM *e; + RSA *key; + int ret; + + e = BN_new(); + key = RSA_new(); + + if (!e || !key) + goto err; + + ret = BN_set_word(e, RSA_3); + if (ret != 1) + goto err; + + ret = RSA_generate_key_ex(key, 3072, e, NULL); + if (ret != 1) + goto err; + + BN_free(e); + + return key; + +err: + RSA_free(key); + BN_free(e); + + return NULL; +} + +static void reverse_bytes(void *data, int length) +{ + int i = 0; + int j = length - 1; + uint8_t temp; + uint8_t *ptr = data; + + while (i < j) { + temp = ptr[i]; + ptr[i] = ptr[j]; + ptr[j] = temp; + i++; + j--; + } +} + +enum mrtags { + MRECREATE = 0x0045544145524345, + MREADD = 0x0000000044444145, + MREEXTEND = 0x00444E4554584545, +}; + +static bool mrenclave_update(EVP_MD_CTX *ctx, const void *data) +{ + if (!EVP_DigestUpdate(ctx, data, 64)) { + fprintf(stderr, "digest update failed\n"); + return false; + } + + return true; +} + +static bool mrenclave_commit(EVP_MD_CTX *ctx, uint8_t *mrenclave) +{ + unsigned int size; + + if (!EVP_DigestFinal_ex(ctx, (unsigned char *)mrenclave, &size)) { + fprintf(stderr, "digest commit failed\n"); + return false; + } + + if (size != 32) { + fprintf(stderr, "invalid digest size = %u\n", size); + return false; + } + + return true; +} + +struct mrecreate { + uint64_t tag; + uint32_t ssaframesize; + uint64_t size; + uint8_t reserved[44]; +} __attribute__((__packed__)); + + +static bool mrenclave_ecreate(EVP_MD_CTX *ctx, uint64_t blob_size) +{ + struct mrecreate mrecreate; + uint64_t encl_size; + + for (encl_size = 0x1000; encl_size < blob_size; ) + encl_size <<= 1; + + memset(&mrecreate, 0, sizeof(mrecreate)); + mrecreate.tag = MRECREATE; + mrecreate.ssaframesize = 1; + mrecreate.size = encl_size; + + if (!EVP_DigestInit_ex(ctx, EVP_sha256(), NULL)) + return false; + + return mrenclave_update(ctx, &mrecreate); +} + +struct mreadd { + uint64_t tag; + uint64_t offset; + uint64_t flags; /* SECINFO flags */ + uint8_t reserved[40]; +} __attribute__((__packed__)); + +static bool mrenclave_eadd(EVP_MD_CTX *ctx, uint64_t offset, uint64_t flags) +{ + struct mreadd mreadd; + + memset(&mreadd, 0, sizeof(mreadd)); + mreadd.tag = MREADD; + mreadd.offset = offset; + mreadd.flags = flags; + + return mrenclave_update(ctx, &mreadd); +} + +struct mreextend { + uint64_t tag; + uint64_t offset; + uint8_t reserved[48]; +} __attribute__((__packed__)); + +static bool mrenclave_eextend(EVP_MD_CTX *ctx, uint64_t offset, + const uint8_t *data) +{ + struct mreextend mreextend; + int i; + + for (i = 0; i < 0x1000; i += 0x100) { + memset(&mreextend, 0, sizeof(mreextend)); + mreextend.tag = MREEXTEND; + mreextend.offset = offset + i; + + if (!mrenclave_update(ctx, &mreextend)) + return false; + + if (!mrenclave_update(ctx, &data[i + 0x00])) + return false; + + if (!mrenclave_update(ctx, &data[i + 0x40])) + return false; + + if (!mrenclave_update(ctx, &data[i + 0x80])) + return false; + + if (!mrenclave_update(ctx, &data[i + 0xC0])) + return false; + } + + return true; +} + +static bool mrenclave_segment(EVP_MD_CTX *ctx, struct encl *encl, + struct encl_segment *seg) +{ + uint64_t end = seg->offset + seg->size; + uint64_t offset; + + for (offset = seg->offset; offset < end; offset += PAGE_SIZE) { + if (!mrenclave_eadd(ctx, offset, seg->flags)) + return false; + + if (!mrenclave_eextend(ctx, offset, encl->src + offset)) + return false; + } + + return true; +} + +bool encl_measure(struct encl *encl) +{ + uint64_t header1[2] = {0x000000E100000006, 0x0000000000010000}; + uint64_t header2[2] = {0x0000006000000101, 0x0000000100000060}; + struct sgx_sigstruct *sigstruct = &encl->sigstruct; + struct sgx_sigstruct_payload payload; + uint8_t digest[SHA256_DIGEST_LENGTH]; + unsigned int siglen; + RSA *key = NULL; + EVP_MD_CTX *ctx; + int i; + + memset(sigstruct, 0, sizeof(*sigstruct)); + + sigstruct->header.header1[0] = header1[0]; + sigstruct->header.header1[1] = header1[1]; + sigstruct->header.header2[0] = header2[0]; + sigstruct->header.header2[1] = header2[1]; + sigstruct->exponent = 3; + sigstruct->body.attributes = SGX_ATTR_MODE64BIT; + sigstruct->body.xfrm = 3; + + /* sanity check */ + if (check_crypto_errors()) + goto err; + + key = gen_sign_key(); + if (!key) + goto err; + + BN_bn2bin(get_modulus(key), sigstruct->modulus); + + ctx = EVP_MD_CTX_create(); + if (!ctx) + goto err; + + if (!mrenclave_ecreate(ctx, encl->src_size)) + goto err; + + for (i = 0; i < encl->nr_segments; i++) { + struct encl_segment *seg = &encl->segment_tbl[i]; + + if (!mrenclave_segment(ctx, encl, seg)) + goto err; + } + + if (!mrenclave_commit(ctx, sigstruct->body.mrenclave)) + goto err; + + memcpy(&payload.header, &sigstruct->header, sizeof(sigstruct->header)); + memcpy(&payload.body, &sigstruct->body, sizeof(sigstruct->body)); + + SHA256((unsigned char *)&payload, sizeof(payload), digest); + + if (!RSA_sign(NID_sha256, digest, SHA256_DIGEST_LENGTH, + sigstruct->signature, &siglen, key)) + goto err; + + if (!calc_q1q2(sigstruct->signature, sigstruct->modulus, sigstruct->q1, + sigstruct->q2)) + goto err; + + /* BE -> LE */ + reverse_bytes(sigstruct->signature, SGX_MODULUS_SIZE); + reverse_bytes(sigstruct->modulus, SGX_MODULUS_SIZE); + reverse_bytes(sigstruct->q1, SGX_MODULUS_SIZE); + reverse_bytes(sigstruct->q2, SGX_MODULUS_SIZE); + + EVP_MD_CTX_destroy(ctx); + RSA_free(key); + return true; + +err: + EVP_MD_CTX_destroy(ctx); + RSA_free(key); + return false; +} diff --git a/tools/testing/selftests/sgx/test_encl.c b/tools/testing/selftests/sgx/test_encl.c new file mode 100644 index 000000000000..ede915399742 --- /dev/null +++ b/tools/testing/selftests/sgx/test_encl.c @@ -0,0 +1,20 @@ +// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) +// Copyright(c) 2016-18 Intel Corporation. + +#include <stddef.h> +#include "defines.h" + +static void *memcpy(void *dest, const void *src, size_t n) +{ + size_t i; + + for (i = 0; i < n; i++) + ((char *)dest)[i] = ((char *)src)[i]; + + return dest; +} + +void encl_body(void *rdi, void *rsi) +{ + memcpy(rsi, rdi, 8); +} diff --git a/tools/testing/selftests/sgx/test_encl.lds b/tools/testing/selftests/sgx/test_encl.lds new file mode 100644 index 000000000000..0fbbda7e665e --- /dev/null +++ b/tools/testing/selftests/sgx/test_encl.lds @@ -0,0 +1,40 @@ +OUTPUT_FORMAT(elf64-x86-64) + +PHDRS +{ + tcs PT_LOAD; + text PT_LOAD; + data PT_LOAD; +} + +SECTIONS +{ + . = 0; + .tcs : { + *(.tcs*) + } : tcs + + . = ALIGN(4096); + .text : { + *(.text*) + *(.rodata*) + } : text + + . = ALIGN(4096); + .data : { + *(.data*) + } : data + + /DISCARD/ : { + *(.comment*) + *(.note*) + *(.debug*) + *(.eh_frame*) + } +} + +ASSERT(!DEFINED(.altinstructions), "ALTERNATIVES are not supported in enclaves") +ASSERT(!DEFINED(.altinstr_replacement), "ALTERNATIVES are not supported in enclaves") +ASSERT(!DEFINED(.discard.retpoline_safe), "RETPOLINE ALTERNATIVES are not supported in enclaves") +ASSERT(!DEFINED(.discard.nospec), "RETPOLINE ALTERNATIVES are not supported in enclaves") +ASSERT(!DEFINED(.got.plt), "Libcalls are not supported in enclaves") diff --git a/tools/testing/selftests/sgx/test_encl_bootstrap.S b/tools/testing/selftests/sgx/test_encl_bootstrap.S new file mode 100644 index 000000000000..6836ea86126e --- /dev/null +++ b/tools/testing/selftests/sgx/test_encl_bootstrap.S @@ -0,0 +1,89 @@ +/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ +/* + * Copyright(c) 2016-18 Intel Corporation. + */ + + .macro ENCLU + .byte 0x0f, 0x01, 0xd7 + .endm + + .section ".tcs", "aw" + .balign 4096 + + .fill 1, 8, 0 # STATE (set by CPU) + .fill 1, 8, 0 # FLAGS + .quad encl_ssa # OSSA + .fill 1, 4, 0 # CSSA (set by CPU) + .fill 1, 4, 1 # NSSA + .quad encl_entry # OENTRY + .fill 1, 8, 0 # AEP (set by EENTER and ERESUME) + .fill 1, 8, 0 # OFSBASE + .fill 1, 8, 0 # OGSBASE + .fill 1, 4, 0xFFFFFFFF # FSLIMIT + .fill 1, 4, 0xFFFFFFFF # GSLIMIT + .fill 4024, 1, 0 # Reserved + + # Identical to the previous TCS. + .fill 1, 8, 0 # STATE (set by CPU) + .fill 1, 8, 0 # FLAGS + .quad encl_ssa # OSSA + .fill 1, 4, 0 # CSSA (set by CPU) + .fill 1, 4, 1 # NSSA + .quad encl_entry # OENTRY + .fill 1, 8, 0 # AEP (set by EENTER and ERESUME) + .fill 1, 8, 0 # OFSBASE + .fill 1, 8, 0 # OGSBASE + .fill 1, 4, 0xFFFFFFFF # FSLIMIT + .fill 1, 4, 0xFFFFFFFF # GSLIMIT + .fill 4024, 1, 0 # Reserved + + .text + +encl_entry: + # RBX contains the base address for TCS, which is also the first address + # inside the enclave. By adding the value of le_stack_end to it, we get + # the absolute address for the stack. + lea (encl_stack)(%rbx), %rax + xchg %rsp, %rax + push %rax + + push %rcx # push the address after EENTER + push %rbx # push the enclave base address + + call encl_body + + pop %rbx # pop the enclave base address + + /* Clear volatile GPRs, except RAX (EEXIT leaf). */ + xor %rcx, %rcx + xor %rdx, %rdx + xor %rdi, %rdi + xor %rsi, %rsi + xor %r8, %r8 + xor %r9, %r9 + xor %r10, %r10 + xor %r11, %r11 + + # Reset status flags. + add %rdx, %rdx # OF = SF = AF = CF = 0; ZF = PF = 1 + + # Prepare EEXIT target by popping the address of the instruction after + # EENTER to RBX. + pop %rbx + + # Restore the caller stack. + pop %rax + mov %rax, %rsp + + # EEXIT + mov $4, %rax + enclu + + .section ".data", "aw" + +encl_ssa: + .space 4096 + + .balign 4096 + .space 8192 +encl_stack: -- 2.25.1

5 years, 1 month

3
3
0 0

[PATCH] mm/test: use the new SKIP() macro

by Ralph Campbell

Some tests might not be able to be run if resources like huge pages are not available. Mark these tests as skipped instead of simply passing. Signed-off-by: Ralph Campbell <rcampbell(a)nvidia.com> --- This applies to linux-mm and is for Andrew Morton's tree. tools/testing/selftests/vm/hmm-tests.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/vm/hmm-tests.c b/tools/testing/selftests/vm/hmm-tests.c index 93fc5cadce61..0a28a6a29581 100644 --- a/tools/testing/selftests/vm/hmm-tests.c +++ b/tools/testing/selftests/vm/hmm-tests.c @@ -680,7 +680,7 @@ TEST_F(hmm, anon_write_hugetlbfs) n = gethugepagesizes(pagesizes, 4); if (n <= 0) - return; + SKIP(return, "Huge page size could not be determined"); for (idx = 0; --n > 0; ) { if (pagesizes[n] < pagesizes[idx]) idx = n; @@ -694,7 +694,7 @@ TEST_F(hmm, anon_write_hugetlbfs) buffer->ptr = get_hugepage_region(size, GHR_STRICT); if (buffer->ptr == NULL) { free(buffer); - return; + SKIP(return, "Huge page could not be allocated"); } buffer->fd = -1; -- 2.20.1

5 years, 1 month

2
1
0 0

[PATCH v8 1/2] Add a "nosymfollow" mount option.

by Ross Zwisler

From: Mattias Nissler <mnissler(a)chromium.org> For mounts that have the new "nosymfollow" option, don't follow symlinks when resolving paths. The new option is similar in spirit to the existing "nodev", "noexec", and "nosuid" options, as well as to the LOOKUP_NO_SYMLINKS resolve flag in the openat2(2) syscall. Various BSD variants have been supporting the "nosymfollow" mount option for a long time with equivalent implementations. Note that symlinks may still be created on file systems mounted with the "nosymfollow" option present. readlink() remains functional, so user space code that is aware of symlinks can still choose to follow them explicitly. Setting the "nosymfollow" mount option helps prevent privileged writers from modifying files unintentionally in case there is an unexpected link along the accessed path. The "nosymfollow" option is thus useful as a defensive measure for systems that need to deal with untrusted file systems in privileged contexts. More information on the history and motivation for this patch can be found here: https://sites.google.com/a/chromium.org/dev/chromium-os/chromiumos-design-d… Signed-off-by: Mattias Nissler <mnissler(a)chromium.org> Signed-off-by: Ross Zwisler <zwisler(a)google.com> Reviewed-by: Aleksa Sarai <cyphar(a)cyphar.com> --- Changes since v7 [1]: * Rebased onto v5.9-rc1. * Added selftest in second patch. * Added Aleska's Reviewed-By tag. Thank you for the review! After this lands I will upstream changes to util-linux[2] and man-pages [3]. [1]: https://lkml.org/lkml/2020/8/11/896 [2]: https://github.com/rzwisler/util-linux/commit/7f8771acd85edb70d97921c026c55… [3]: https://github.com/rzwisler/man-pages/commit/b8fe8079f64b5068940c0144586e58… --- fs/namei.c | 3 ++- fs/namespace.c | 2 ++ fs/proc_namespace.c | 1 + fs/statfs.c | 2 ++ include/linux/mount.h | 3 ++- include/linux/statfs.h | 1 + include/uapi/linux/mount.h | 1 + 7 files changed, 11 insertions(+), 2 deletions(-) diff --git a/fs/namei.c b/fs/namei.c index e99e2a9da0f7d..12d92af2e2ca7 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1626,7 +1626,8 @@ static const char *pick_link(struct nameidata *nd, struct path *link, return ERR_PTR(error); } - if (unlikely(nd->flags & LOOKUP_NO_SYMLINKS)) + if (unlikely(nd->flags & LOOKUP_NO_SYMLINKS) || + unlikely(nd->path.mnt->mnt_flags & MNT_NOSYMFOLLOW)) return ERR_PTR(-ELOOP); if (!(nd->flags & LOOKUP_RCU)) { diff --git a/fs/namespace.c b/fs/namespace.c index bae0e95b3713a..6408788a649e1 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -3160,6 +3160,8 @@ int path_mount(const char *dev_name, struct path *path, mnt_flags &= ~(MNT_RELATIME | MNT_NOATIME); if (flags & MS_RDONLY) mnt_flags |= MNT_READONLY; + if (flags & MS_NOSYMFOLLOW) + mnt_flags |= MNT_NOSYMFOLLOW; /* The default atime for remount is preservation */ if ((flags & MS_REMOUNT) && diff --git a/fs/proc_namespace.c b/fs/proc_namespace.c index 3059a9394c2d6..e59d4bb3a89e4 100644 --- a/fs/proc_namespace.c +++ b/fs/proc_namespace.c @@ -70,6 +70,7 @@ static void show_mnt_opts(struct seq_file *m, struct vfsmount *mnt) { MNT_NOATIME, ",noatime" }, { MNT_NODIRATIME, ",nodiratime" }, { MNT_RELATIME, ",relatime" }, + { MNT_NOSYMFOLLOW, ",nosymfollow" }, { 0, NULL } }; const struct proc_fs_opts *fs_infop; diff --git a/fs/statfs.c b/fs/statfs.c index 2616424012ea7..59f33752c1311 100644 --- a/fs/statfs.c +++ b/fs/statfs.c @@ -29,6 +29,8 @@ static int flags_by_mnt(int mnt_flags) flags |= ST_NODIRATIME; if (mnt_flags & MNT_RELATIME) flags |= ST_RELATIME; + if (mnt_flags & MNT_NOSYMFOLLOW) + flags |= ST_NOSYMFOLLOW; return flags; } diff --git a/include/linux/mount.h b/include/linux/mount.h index de657bd211fa6..aaf343b38671c 100644 --- a/include/linux/mount.h +++ b/include/linux/mount.h @@ -30,6 +30,7 @@ struct fs_context; #define MNT_NODIRATIME 0x10 #define MNT_RELATIME 0x20 #define MNT_READONLY 0x40 /* does the user want this to be r/o? */ +#define MNT_NOSYMFOLLOW 0x80 #define MNT_SHRINKABLE 0x100 #define MNT_WRITE_HOLD 0x200 @@ -46,7 +47,7 @@ struct fs_context; #define MNT_SHARED_MASK (MNT_UNBINDABLE) #define MNT_USER_SETTABLE_MASK (MNT_NOSUID | MNT_NODEV | MNT_NOEXEC \ | MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME \ - | MNT_READONLY) + | MNT_READONLY | MNT_NOSYMFOLLOW) #define MNT_ATIME_MASK (MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME ) #define MNT_INTERNAL_FLAGS (MNT_SHARED | MNT_WRITE_HOLD | MNT_INTERNAL | \ diff --git a/include/linux/statfs.h b/include/linux/statfs.h index 9bc69edb8f188..fac4356ea1bfc 100644 --- a/include/linux/statfs.h +++ b/include/linux/statfs.h @@ -40,6 +40,7 @@ struct kstatfs { #define ST_NOATIME 0x0400 /* do not update access times */ #define ST_NODIRATIME 0x0800 /* do not update directory access times */ #define ST_RELATIME 0x1000 /* update atime relative to mtime/ctime */ +#define ST_NOSYMFOLLOW 0x2000 /* do not follow symlinks */ struct dentry; extern int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid); diff --git a/include/uapi/linux/mount.h b/include/uapi/linux/mount.h index 96a0240f23fed..dd8306ea336c1 100644 --- a/include/uapi/linux/mount.h +++ b/include/uapi/linux/mount.h @@ -16,6 +16,7 @@ #define MS_REMOUNT 32 /* Alter flags of a mounted FS */ #define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */ #define MS_DIRSYNC 128 /* Directory modifications are synchronous */ +#define MS_NOSYMFOLLOW 256 /* Do not follow symlinks */ #define MS_NOATIME 1024 /* Do not update access times. */ #define MS_NODIRATIME 2048 /* Do not update directory access times */ #define MS_BIND 4096 -- 2.28.0.220.ged08abb693-goog

5 years, 1 month

4
5
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[PATCH] selftests/livepatch: Do not check order when using "comm" for dmesg checking

by Miroslav Benes

check_result() uses "comm" to check expected results of selftests output in dmesg. Everything works fine if timestamps in dmesg are unique. If not, like in this example [ 86.844422] test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state [ 86.844422] livepatch: 'test_klp_callbacks_demo': starting unpatching transition , "comm" fails with "comm: file 2 is not in sorted order". Suppress the order checking with --nocheck-order option. Signed-off-by: Miroslav Benes <mbenes(a)suse.cz> --- The strange thing is, I can reproduce the issue easily and reliably on older codestreams (4.12) but not on current upstream in my testing environment. I think the change makes sense regardless though. tools/testing/selftests/livepatch/functions.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/livepatch/functions.sh b/tools/testing/selftests/livepatch/functions.sh index 1aba83c87ad3..846c7ed71556 100644 --- a/tools/testing/selftests/livepatch/functions.sh +++ b/tools/testing/selftests/livepatch/functions.sh @@ -278,7 +278,7 @@ function check_result { # help differentiate repeated testing runs. Remove them with a # post-comparison sed filter. - result=$(dmesg | comm -13 "$SAVED_DMESG" - | \ + result=$(dmesg | comm --nocheck-order -13 "$SAVED_DMESG" - | \ grep -e 'livepatch:' -e 'test_klp' | \ grep -v '$tainting\|taints$ kernel' | \ sed 's/^\[[ 0-9.]*\] //') -- 2.28.0

5 years, 1 month

3
2
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[PATCH] lib: kunit: add list_sort test conversion to KUnit

by Vitor Massaru Iha

This adds the conversion of the runtime tests of test_list_sort, from `lib/test_list_sort.c` to KUnit tests. Please apply this commit first (linux-kselftest/kunit-fixes): 3f37d14b8a3152441f36b6bc74000996679f0998 kunit: kunit_config: Fix parsing of CONFIG options with space Code Style Documentation: [0] Signed-off-by: Vitor Massaru Iha <vitor(a)massaru.org> Link: [0] https://lore.kernel.org/linux-kselftest/20200620054944.167330-1-davidgow@go… --- lib/Kconfig.debug | 29 +++++--- lib/Makefile | 2 +- lib/{test_list_sort.c => list_sort_kunit.c} | 73 +++++++++++---------- 3 files changed, 58 insertions(+), 46 deletions(-) rename lib/{test_list_sort.c => list_sort_kunit.c} (62%) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 9ad9210d70a1..de4fd020a4af 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1854,16 +1854,6 @@ config LKDTM Documentation on how to use the module can be found in Documentation/fault-injection/provoke-crashes.rst -config TEST_LIST_SORT - tristate "Linked list sorting test" - depends on DEBUG_KERNEL || m - help - Enable this to turn on 'list_sort()' function test. This test is - executed only once during system boot (so affects only boot time), - or at module load time. - - If unsure, say N. - config TEST_MIN_HEAP tristate "Min heap test" depends on DEBUG_KERNEL || m @@ -2173,6 +2163,25 @@ config LIST_KUNIT_TEST If unsure, say N. +config LIST_SORT_KUNIT + tristate "KUnit Linked list sorting test" + depends on KUNIT + depends on DEBUG_KERNEL || m + help + Enable this to turn on 'list_sort()' function test. This test is + executed only once during system boot (so affects only boot time), + or at module load time. + + KUnit tests run during boot and output the results to the debug log + in TAP format (http://testanything.org/). Only useful for kernel devs + running the KUnit test harness, and not intended for inclusion into a + production build. + + For more information on KUnit and unit tests in general please refer + to the KUnit documentation in Documentation/dev-tools/kunit/. + + If unsure, say N. + config LINEAR_RANGES_TEST tristate "KUnit test for linear_ranges" depends on KUNIT diff --git a/lib/Makefile b/lib/Makefile index b1c42c10073b..798724b7cde0 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -71,7 +71,6 @@ obj-$(CONFIG_TEST_UBSAN) += test_ubsan.o CFLAGS_test_ubsan.o += $(call cc-disable-warning, vla) UBSAN_SANITIZE_test_ubsan.o := y obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o -obj-$(CONFIG_TEST_LIST_SORT) += test_list_sort.o obj-$(CONFIG_TEST_MIN_HEAP) += test_min_heap.o obj-$(CONFIG_TEST_LKM) += test_module.o obj-$(CONFIG_TEST_VMALLOC) += test_vmalloc.o @@ -317,4 +316,5 @@ obj-$(CONFIG_OBJAGG) += objagg.o # KUnit tests obj-$(CONFIG_LIST_KUNIT_TEST) += list-test.o +obj-$(CONFIG_LIST_SORT_KUNIT) += list_sort_kunit.o obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o diff --git a/lib/test_list_sort.c b/lib/list_sort_kunit.c similarity index 62% rename from lib/test_list_sort.c rename to lib/list_sort_kunit.c index 1f017d3b610e..20cbacbb7d6c 100644 --- a/lib/test_list_sort.c +++ b/lib/list_sort_kunit.c @@ -1,13 +1,10 @@ // SPDX-License-Identifier: GPL-2.0-only -#define pr_fmt(fmt) "list_sort_test: " fmt +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#include <linux/kernel.h> #include <linux/list_sort.h> #include <linux/list.h> -#include <linux/module.h> -#include <linux/printk.h> -#include <linux/slab.h> #include <linux/random.h> +#include <kunit/test.h> /* * The pattern of set bits in the list length determines which cases @@ -29,28 +26,28 @@ struct debug_el { /* Array, containing pointers to all elements in the test list */ static struct debug_el **elts __initdata; -static int __init check(struct debug_el *ela, struct debug_el *elb) +static int __init check(struct kunit *context, struct debug_el *ela, struct debug_el *elb) { if (ela->serial >= TEST_LIST_LEN) { - pr_err("error: incorrect serial %d\n", ela->serial); + KUNIT_FAIL(context, "incorrect serial %d", ela->serial); return -EINVAL; } if (elb->serial >= TEST_LIST_LEN) { - pr_err("error: incorrect serial %d\n", elb->serial); + KUNIT_FAIL(context, "incorrect serial %d", elb->serial); return -EINVAL; } if (elts[ela->serial] != ela || elts[elb->serial] != elb) { - pr_err("error: phantom element\n"); + KUNIT_FAIL(context, "phantom element"); return -EINVAL; } if (ela->poison1 != TEST_POISON1 || ela->poison2 != TEST_POISON2) { - pr_err("error: bad poison: %#x/%#x\n", - ela->poison1, ela->poison2); + KUNIT_FAIL(context, "bad poison: %#x/%#x", + ela->poison1, ela->poison2); return -EINVAL; } if (elb->poison1 != TEST_POISON1 || elb->poison2 != TEST_POISON2) { - pr_err("error: bad poison: %#x/%#x\n", - elb->poison1, elb->poison2); + KUNIT_FAIL(context, "bad poison: %#x/%#x", + elb->poison1, elb->poison2); return -EINVAL; } return 0; @@ -63,27 +60,26 @@ static int __init cmp(void *priv, struct list_head *a, struct list_head *b) ela = container_of(a, struct debug_el, list); elb = container_of(b, struct debug_el, list); - check(ela, elb); + check(priv, ela, elb); return ela->value - elb->value; } -static int __init list_sort_test(void) +static void __init test_list_sort(struct kunit *context) { - int i, count = 1, err = -ENOMEM; + int i, count = 1; struct debug_el *el; struct list_head *cur; LIST_HEAD(head); - pr_debug("start testing list_sort()\n"); - elts = kcalloc(TEST_LIST_LEN, sizeof(*elts), GFP_KERNEL); - if (!elts) - return err; + KUNIT_ASSERT_FALSE_MSG(context, elts == NULL, "kcalloc failed"); for (i = 0; i < TEST_LIST_LEN; i++) { el = kmalloc(sizeof(*el), GFP_KERNEL); - if (!el) + if (!el) { + KUNIT_FAIL(context, "kmalloc failed"); goto exit; + } /* force some equivalencies */ el->value = prandom_u32() % (TEST_LIST_LEN / 3); @@ -94,55 +90,62 @@ static int __init list_sort_test(void) list_add_tail(&el->list, &head); } - list_sort(NULL, &head, cmp); + list_sort(context, &head, cmp); - err = -EINVAL; for (cur = head.next; cur->next != &head; cur = cur->next) { struct debug_el *el1; int cmp_result; if (cur->next->prev != cur) { - pr_err("error: list is corrupted\n"); + KUNIT_FAIL(context, "list is corrupted"); goto exit; } - cmp_result = cmp(NULL, cur, cur->next); + cmp_result = cmp(context, cur, cur->next); if (cmp_result > 0) { - pr_err("error: list is not sorted\n"); + KUNIT_FAIL(context, "list is not sorted"); goto exit; } el = container_of(cur, struct debug_el, list); el1 = container_of(cur->next, struct debug_el, list); if (cmp_result == 0 && el->serial >= el1->serial) { - pr_err("error: order of equivalent elements not " - "preserved\n"); + KUNIT_FAIL(context, "order of equivalent elements not preserved"); goto exit; } - if (check(el, el1)) { - pr_err("error: element check failed\n"); + if (check(context, el, el1)) { goto exit; } count++; } if (head.prev != cur) { - pr_err("error: list is corrupted\n"); + KUNIT_FAIL(context, "list is corrupted"); goto exit; } if (count != TEST_LIST_LEN) { - pr_err("error: bad list length %d", count); + KUNIT_FAIL(context, "bad list length %d", count); goto exit; } - err = 0; exit: for (i = 0; i < TEST_LIST_LEN; i++) kfree(elts[i]); kfree(elts); - return err; } -module_init(list_sort_test); + +static struct kunit_case __refdata list_sort_test_cases[] = { + KUNIT_CASE(test_list_sort), + {} +}; + +static struct kunit_suite list_sort_test_suite = { + .name = "list-sort", + .test_cases = list_sort_test_cases, +}; + +kunit_test_suites(&list_sort_test_suite); + MODULE_LICENSE("GPL"); base-commit: d43c7fb05765152d4d4a39a8ef957c4ea14d8847 -- 2.26.2

5 years, 1 month

3
3
0 0

[v2] dma-buf: heaps: bugfix for selftest failure

by Leon He

From: Leon He <leon.he(a)unisoc.com> There are two errors in the dmabuf-heap selftest: 1. The 'char name[5]' was not initialized to zero, which will cause strcmp(name, "vgem") failed in check_vgem(). 2. The return value of test_alloc_errors() should be reversed, other- wise the while loop in main() will be broken. Signed-off-by: Leon He <leon.he(a)unisoc.com> --- tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c index cd5e1f6..836b185 100644 --- a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c +++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c @@ -22,7 +22,7 @@ static int check_vgem(int fd) { drm_version_t version = { 0 }; - char name[5]; + char name[5] = { 0 }; int ret; version.name_len = 4; @@ -357,7 +357,7 @@ static int test_alloc_errors(char *heap_name) if (heap_fd >= 0) close(heap_fd); - return ret; + return !ret; } int main(void) -- 2.7.4

5 years, 1 month

4
3
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[PATCH][next] selftests/bpf: fix spelling mistake "scoket" -> "socket"

by Colin King

From: Colin Ian King <colin.king(a)canonical.com> There is a spelling mistake an a check error message. Fix it. Signed-off-by: Colin Ian King <colin.king(a)canonical.com> --- tools/testing/selftests/bpf/prog_tests/d_path.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/prog_tests/d_path.c b/tools/testing/selftests/bpf/prog_tests/d_path.c index 058765da17e6..4ce2bb799afb 100644 --- a/tools/testing/selftests/bpf/prog_tests/d_path.c +++ b/tools/testing/selftests/bpf/prog_tests/d_path.c @@ -38,7 +38,7 @@ static int trigger_fstat_events(pid_t pid) return ret; /* unmountable pseudo-filesystems */ sockfd = socket(AF_INET, SOCK_STREAM, 0); - if (CHECK(sockfd < 0, "trigger", "scoket failed\n")) + if (CHECK(sockfd < 0, "trigger", "socket failed\n")) goto out_close; /* mountable pseudo-filesystems */ procfd = open("/proc/self/comm", O_RDONLY); -- 2.27.0

5 years, 1 month

2
1
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[PATCH AUTOSEL 5.4 23/38] selftests: disable rp_filter for icmp_redirect.sh

by Sasha Levin

From: David Ahern <dsahern(a)kernel.org> [ Upstream commit bcf7ddb0186d366f761f86196b480ea6dd2dc18c ] h1 is initially configured to reach h2 via r1 rather than the more direct path through r2. If rp_filter is set and inherited for r2, forwarding fails since the source address of h1 is reachable from eth0 vs the packet coming to it via r1 and eth1. Since rp_filter setting affects the test, explicitly reset it. Signed-off-by: David Ahern <dsahern(a)kernel.org> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/net/icmp_redirect.sh | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/testing/selftests/net/icmp_redirect.sh b/tools/testing/selftests/net/icmp_redirect.sh index 18c5de53558af..bf361f30d6ef9 100755 --- a/tools/testing/selftests/net/icmp_redirect.sh +++ b/tools/testing/selftests/net/icmp_redirect.sh @@ -180,6 +180,8 @@ setup() ;; r[12]) ip netns exec $ns sysctl -q -w net.ipv4.ip_forward=1 ip netns exec $ns sysctl -q -w net.ipv4.conf.all.send_redirects=1 + ip netns exec $ns sysctl -q -w net.ipv4.conf.default.rp_filter=0 + ip netns exec $ns sysctl -q -w net.ipv4.conf.all.rp_filter=0 ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=1 ip netns exec $ns sysctl -q -w net.ipv6.route.mtu_expires=10 -- 2.25.1

5 years, 1 month

1
0
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[PATCH AUTOSEL 5.7 52/54] bpf: selftests: global_funcs: Check err_str before strstr

by Sasha Levin

From: Yauheni Kaliuta <yauheni.kaliuta(a)redhat.com> [ Upstream commit c210773d6c6f595f5922d56b7391fe343bc7310e ] The error path in libbpf.c:load_program() has calls to pr_warn() which ends up for global_funcs tests to test_global_funcs.c:libbpf_debug_print(). For the tests with no struct test_def::err_str initialized with a string, it causes call of strstr() with NULL as the second argument and it segfaults. Fix it by calling strstr() only for non-NULL err_str. Signed-off-by: Yauheni Kaliuta <yauheni.kaliuta(a)redhat.com> Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Acked-by: Yonghong Song <yhs(a)fb.com> Link: https://lore.kernel.org/bpf/20200820115843.39454-1-yauheni.kaliuta@redhat.c… Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/bpf/prog_tests/test_global_funcs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c b/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c index 25b068591e9a4..193002b14d7f6 100644 --- a/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c +++ b/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c @@ -19,7 +19,7 @@ static int libbpf_debug_print(enum libbpf_print_level level, log_buf = va_arg(args, char *); if (!log_buf) goto out; - if (strstr(log_buf, err_str) == 0) + if (err_str && strstr(log_buf, err_str) == 0) found = true; out: printf(format, log_buf); -- 2.25.1

5 years, 1 month

1
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[PATCH AUTOSEL 5.7 32/54] selftests: disable rp_filter for icmp_redirect.sh

by Sasha Levin

From: David Ahern <dsahern(a)kernel.org> [ Upstream commit bcf7ddb0186d366f761f86196b480ea6dd2dc18c ] h1 is initially configured to reach h2 via r1 rather than the more direct path through r2. If rp_filter is set and inherited for r2, forwarding fails since the source address of h1 is reachable from eth0 vs the packet coming to it via r1 and eth1. Since rp_filter setting affects the test, explicitly reset it. Signed-off-by: David Ahern <dsahern(a)kernel.org> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/net/icmp_redirect.sh | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/testing/selftests/net/icmp_redirect.sh b/tools/testing/selftests/net/icmp_redirect.sh index 18c5de53558af..bf361f30d6ef9 100755 --- a/tools/testing/selftests/net/icmp_redirect.sh +++ b/tools/testing/selftests/net/icmp_redirect.sh @@ -180,6 +180,8 @@ setup() ;; r[12]) ip netns exec $ns sysctl -q -w net.ipv4.ip_forward=1 ip netns exec $ns sysctl -q -w net.ipv4.conf.all.send_redirects=1 + ip netns exec $ns sysctl -q -w net.ipv4.conf.default.rp_filter=0 + ip netns exec $ns sysctl -q -w net.ipv4.conf.all.rp_filter=0 ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=1 ip netns exec $ns sysctl -q -w net.ipv6.route.mtu_expires=10 -- 2.25.1

5 years, 1 month

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[PATCH AUTOSEL 5.7 25/54] selftests/bpf: Correct various core_reloc 64-bit assumptions

by Sasha Levin

From: Andrii Nakryiko <andriin(a)fb.com> [ Upstream commit 5705d705832f74395c5465ce93192688f543006a ] Ensure that types are memory layout- and field alignment-compatible regardless of 32/64-bitness mix of libbpf and BPF architecture. Signed-off-by: Andrii Nakryiko <andriin(a)fb.com> Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Link: https://lore.kernel.org/bpf/20200813204945.1020225-8-andriin@fb.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- .../selftests/bpf/prog_tests/core_reloc.c | 20 +++--- .../selftests/bpf/progs/core_reloc_types.h | 69 ++++++++++--------- 2 files changed, 47 insertions(+), 42 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/core_reloc.c b/tools/testing/selftests/bpf/prog_tests/core_reloc.c index 084ed26a7d78c..a54eafc5e4b31 100644 --- a/tools/testing/selftests/bpf/prog_tests/core_reloc.c +++ b/tools/testing/selftests/bpf/prog_tests/core_reloc.c @@ -237,8 +237,8 @@ .union_sz = sizeof(((type *)0)->union_field), \ .arr_sz = sizeof(((type *)0)->arr_field), \ .arr_elem_sz = sizeof(((type *)0)->arr_field[0]), \ - .ptr_sz = sizeof(((type *)0)->ptr_field), \ - .enum_sz = sizeof(((type *)0)->enum_field), \ + .ptr_sz = 8, /* always 8-byte pointer for BPF */ \ + .enum_sz = sizeof(((type *)0)->enum_field), \ } #define SIZE_CASE(name) { \ @@ -432,20 +432,20 @@ static struct core_reloc_test_case test_cases[] = { .sb4 = -1, .sb20 = -0x17654321, .u32 = 0xBEEF, - .s32 = -0x3FEDCBA987654321, + .s32 = -0x3FEDCBA987654321LL, }), BITFIELDS_CASE(bitfields___bitfield_vs_int, { - .ub1 = 0xFEDCBA9876543210, + .ub1 = 0xFEDCBA9876543210LL, .ub2 = 0xA6, - .ub7 = -0x7EDCBA987654321, - .sb4 = -0x6123456789ABCDE, - .sb20 = 0xD00D, + .ub7 = -0x7EDCBA987654321LL, + .sb4 = -0x6123456789ABCDELL, + .sb20 = 0xD00DLL, .u32 = -0x76543, - .s32 = 0x0ADEADBEEFBADB0B, + .s32 = 0x0ADEADBEEFBADB0BLL, }), BITFIELDS_CASE(bitfields___just_big_enough, { - .ub1 = 0xF, - .ub2 = 0x0812345678FEDCBA, + .ub1 = 0xFLL, + .ub2 = 0x0812345678FEDCBALL, }), BITFIELDS_ERR_CASE(bitfields___err_too_big_bitfield), diff --git a/tools/testing/selftests/bpf/progs/core_reloc_types.h b/tools/testing/selftests/bpf/progs/core_reloc_types.h index 6d598cfbdb3e2..f9da9f62c4b34 100644 --- a/tools/testing/selftests/bpf/progs/core_reloc_types.h +++ b/tools/testing/selftests/bpf/progs/core_reloc_types.h @@ -1,5 +1,10 @@ #include <stdint.h> #include <stdbool.h> + +void preserce_ptr_sz_fn(long x) {} + +#define __bpf_aligned __attribute__((aligned(8))) + /* * KERNEL */ @@ -444,51 +449,51 @@ struct core_reloc_primitives { char a; int b; enum core_reloc_primitives_enum c; - void *d; - int (*f)(const char *); + void *d __bpf_aligned; + int (*f)(const char *) __bpf_aligned; }; struct core_reloc_primitives___diff_enum_def { char a; int b; - void *d; - int (*f)(const char *); + void *d __bpf_aligned; + int (*f)(const char *) __bpf_aligned; enum { X = 100, Y = 200, - } c; /* inline enum def with differing set of values */ + } c __bpf_aligned; /* inline enum def with differing set of values */ }; struct core_reloc_primitives___diff_func_proto { - void (*f)(int); /* incompatible function prototype */ - void *d; - enum core_reloc_primitives_enum c; + void (*f)(int) __bpf_aligned; /* incompatible function prototype */ + void *d __bpf_aligned; + enum core_reloc_primitives_enum c __bpf_aligned; int b; char a; }; struct core_reloc_primitives___diff_ptr_type { - const char * const d; /* different pointee type + modifiers */ - char a; + const char * const d __bpf_aligned; /* different pointee type + modifiers */ + char a __bpf_aligned; int b; enum core_reloc_primitives_enum c; - int (*f)(const char *); + int (*f)(const char *) __bpf_aligned; }; struct core_reloc_primitives___err_non_enum { char a[1]; int b; int c; /* int instead of enum */ - void *d; - int (*f)(const char *); + void *d __bpf_aligned; + int (*f)(const char *) __bpf_aligned; }; struct core_reloc_primitives___err_non_int { char a[1]; - int *b; /* ptr instead of int */ - enum core_reloc_primitives_enum c; - void *d; - int (*f)(const char *); + int *b __bpf_aligned; /* ptr instead of int */ + enum core_reloc_primitives_enum c __bpf_aligned; + void *d __bpf_aligned; + int (*f)(const char *) __bpf_aligned; }; struct core_reloc_primitives___err_non_ptr { @@ -496,7 +501,7 @@ struct core_reloc_primitives___err_non_ptr { int b; enum core_reloc_primitives_enum c; int d; /* int instead of ptr */ - int (*f)(const char *); + int (*f)(const char *) __bpf_aligned; }; /* @@ -507,7 +512,7 @@ struct core_reloc_mods_output { }; typedef const int int_t; -typedef const char *char_ptr_t; +typedef const char *char_ptr_t __bpf_aligned; typedef const int arr_t[7]; struct core_reloc_mods_substruct { @@ -523,9 +528,9 @@ typedef struct { struct core_reloc_mods { int a; int_t b; - char *c; + char *c __bpf_aligned; char_ptr_t d; - int e[3]; + int e[3] __bpf_aligned; arr_t f; struct core_reloc_mods_substruct g; core_reloc_mods_substruct_t h; @@ -535,9 +540,9 @@ struct core_reloc_mods { struct core_reloc_mods___mod_swap { int b; int_t a; - char *d; + char *d __bpf_aligned; char_ptr_t c; - int f[3]; + int f[3] __bpf_aligned; arr_t e; struct { int y; @@ -555,7 +560,7 @@ typedef arr1_t arr2_t; typedef arr2_t arr3_t; typedef arr3_t arr4_t; -typedef const char * const volatile fancy_char_ptr_t; +typedef const char * const volatile fancy_char_ptr_t __bpf_aligned; typedef core_reloc_mods_substruct_t core_reloc_mods_substruct_tt; @@ -567,7 +572,7 @@ struct core_reloc_mods___typedefs { arr4_t e; fancy_char_ptr_t d; fancy_char_ptr_t c; - int3_t b; + int3_t b __bpf_aligned; int3_t a; }; @@ -739,19 +744,19 @@ struct core_reloc_bitfields___bit_sz_change { int8_t sb4: 1; /* 4 -> 1 */ int32_t sb20: 30; /* 20 -> 30 */ /* non-bitfields */ - uint16_t u32; /* 32 -> 16 */ - int64_t s32; /* 32 -> 64 */ + uint16_t u32; /* 32 -> 16 */ + int64_t s32 __bpf_aligned; /* 32 -> 64 */ }; /* turn bitfield into non-bitfield and vice versa */ struct core_reloc_bitfields___bitfield_vs_int { uint64_t ub1; /* 3 -> 64 non-bitfield */ uint8_t ub2; /* 20 -> 8 non-bitfield */ - int64_t ub7; /* 7 -> 64 non-bitfield signed */ - int64_t sb4; /* 4 -> 64 non-bitfield signed */ - uint64_t sb20; /* 20 -> 16 non-bitfield unsigned */ - int32_t u32: 20; /* 32 non-bitfield -> 20 bitfield */ - uint64_t s32: 60; /* 32 non-bitfield -> 60 bitfield */ + int64_t ub7 __bpf_aligned; /* 7 -> 64 non-bitfield signed */ + int64_t sb4 __bpf_aligned; /* 4 -> 64 non-bitfield signed */ + uint64_t sb20 __bpf_aligned; /* 20 -> 16 non-bitfield unsigned */ + int32_t u32: 20; /* 32 non-bitfield -> 20 bitfield */ + uint64_t s32: 60 __bpf_aligned; /* 32 non-bitfield -> 60 bitfield */ }; struct core_reloc_bitfields___just_big_enough { -- 2.25.1

5 years, 1 month

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[PATCH AUTOSEL 5.7 24/54] selftests/bpf: Fix btf_dump test cases on 32-bit arches

by Sasha Levin

From: Andrii Nakryiko <andriin(a)fb.com> [ Upstream commit eed7818adf03e874994b966aa33bc00204dd275a ] Fix btf_dump test cases by hard-coding BPF's pointer size of 8 bytes for cases where it's impossible to deterimne the pointer size (no long type in BTF). In cases where it's known, validate libbpf correctly determines it as 8. Signed-off-by: Andrii Nakryiko <andriin(a)fb.com> Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Link: https://lore.kernel.org/bpf/20200813204945.1020225-6-andriin@fb.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- .../selftests/bpf/prog_tests/btf_dump.c | 27 ++++++++++++++----- 1 file changed, 20 insertions(+), 7 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/btf_dump.c b/tools/testing/selftests/bpf/prog_tests/btf_dump.c index cb33a7ee4e04f..39fb81d9daeb5 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf_dump.c +++ b/tools/testing/selftests/bpf/prog_tests/btf_dump.c @@ -12,15 +12,16 @@ void btf_dump_printf(void *ctx, const char *fmt, va_list args) static struct btf_dump_test_case { const char *name; const char *file; + bool known_ptr_sz; struct btf_dump_opts opts; } btf_dump_test_cases[] = { - {"btf_dump: syntax", "btf_dump_test_case_syntax", {}}, - {"btf_dump: ordering", "btf_dump_test_case_ordering", {}}, - {"btf_dump: padding", "btf_dump_test_case_padding", {}}, - {"btf_dump: packing", "btf_dump_test_case_packing", {}}, - {"btf_dump: bitfields", "btf_dump_test_case_bitfields", {}}, - {"btf_dump: multidim", "btf_dump_test_case_multidim", {}}, - {"btf_dump: namespacing", "btf_dump_test_case_namespacing", {}}, + {"btf_dump: syntax", "btf_dump_test_case_syntax", true, {}}, + {"btf_dump: ordering", "btf_dump_test_case_ordering", false, {}}, + {"btf_dump: padding", "btf_dump_test_case_padding", true, {}}, + {"btf_dump: packing", "btf_dump_test_case_packing", true, {}}, + {"btf_dump: bitfields", "btf_dump_test_case_bitfields", true, {}}, + {"btf_dump: multidim", "btf_dump_test_case_multidim", false, {}}, + {"btf_dump: namespacing", "btf_dump_test_case_namespacing", false, {}}, }; static int btf_dump_all_types(const struct btf *btf, @@ -62,6 +63,18 @@ static int test_btf_dump_case(int n, struct btf_dump_test_case *t) goto done; } + /* tests with t->known_ptr_sz have no "long" or "unsigned long" type, + * so it's impossible to determine correct pointer size; but if they + * do, it should be 8 regardless of host architecture, becaues BPF + * target is always 64-bit + */ + if (!t->known_ptr_sz) { + btf__set_pointer_size(btf, 8); + } else { + CHECK(btf__pointer_size(btf) != 8, "ptr_sz", "exp %d, got %zu\n", + 8, btf__pointer_size(btf)); + } + snprintf(out_file, sizeof(out_file), "/tmp/%s.output.XXXXXX", t->file); fd = mkstemp(out_file); if (CHECK(fd < 0, "create_tmp", "failed to create file: %d\n", fd)) { -- 2.25.1

5 years, 1 month

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[PATCH AUTOSEL 5.7 20/54] selftests/bpf: Fix segmentation fault in test_progs

by Sasha Levin

From: Jianlin Lv <Jianlin.Lv(a)arm.com> [ Upstream commit 0390c429dbed4068bd2cd8dded937d9a5ec24cd2 ] test_progs reports the segmentation fault as below: $ sudo ./test_progs -t mmap --verbose test_mmap:PASS:skel_open_and_load 0 nsec [...] test_mmap:PASS:adv_mmap1 0 nsec test_mmap:PASS:adv_mmap2 0 nsec test_mmap:PASS:adv_mmap3 0 nsec test_mmap:PASS:adv_mmap4 0 nsec Segmentation fault This issue was triggered because mmap() and munmap() used inconsistent length parameters; mmap() creates a new mapping of 3 * page_size, but the length parameter set in the subsequent re-map and munmap() functions is 4 * page_size; this leads to the destruction of the process space. To fix this issue, first create 4 pages of anonymous mapping, then do all the mmap() with MAP_FIXED. Another issue is that when unmap the second page fails, the length parameter to delete tmp1 mappings should be 4 * page_size. Signed-off-by: Jianlin Lv <Jianlin.Lv(a)arm.com> Signed-off-by: Daniel Borkmann <daniel(a)iogearbox.net> Acked-by: Andrii Nakryiko <andriin(a)fb.com> Link: https://lore.kernel.org/bpf/20200810153940.125508-1-Jianlin.Lv@arm.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/bpf/prog_tests/mmap.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/mmap.c b/tools/testing/selftests/bpf/prog_tests/mmap.c index 43d0b5578f461..9c3c5c0f068fb 100644 --- a/tools/testing/selftests/bpf/prog_tests/mmap.c +++ b/tools/testing/selftests/bpf/prog_tests/mmap.c @@ -21,7 +21,7 @@ void test_mmap(void) const long page_size = sysconf(_SC_PAGE_SIZE); int err, duration = 0, i, data_map_fd, data_map_id, tmp_fd, rdmap_fd; struct bpf_map *data_map, *bss_map; - void *bss_mmaped = NULL, *map_mmaped = NULL, *tmp1, *tmp2; + void *bss_mmaped = NULL, *map_mmaped = NULL, *tmp0, *tmp1, *tmp2; struct test_mmap__bss *bss_data; struct bpf_map_info map_info; __u32 map_info_sz = sizeof(map_info); @@ -183,16 +183,23 @@ void test_mmap(void) /* check some more advanced mmap() manipulations */ + tmp0 = mmap(NULL, 4 * page_size, PROT_READ, MAP_SHARED | MAP_ANONYMOUS, + -1, 0); + if (CHECK(tmp0 == MAP_FAILED, "adv_mmap0", "errno %d\n", errno)) + goto cleanup; + /* map all but last page: pages 1-3 mapped */ - tmp1 = mmap(NULL, 3 * page_size, PROT_READ, MAP_SHARED, + tmp1 = mmap(tmp0, 3 * page_size, PROT_READ, MAP_SHARED | MAP_FIXED, data_map_fd, 0); - if (CHECK(tmp1 == MAP_FAILED, "adv_mmap1", "errno %d\n", errno)) + if (CHECK(tmp0 != tmp1, "adv_mmap1", "tmp0: %p, tmp1: %p\n", tmp0, tmp1)) { + munmap(tmp0, 4 * page_size); goto cleanup; + } /* unmap second page: pages 1, 3 mapped */ err = munmap(tmp1 + page_size, page_size); if (CHECK(err, "adv_mmap2", "errno %d\n", errno)) { - munmap(tmp1, map_sz); + munmap(tmp1, 4 * page_size); goto cleanup; } @@ -201,7 +208,7 @@ void test_mmap(void) MAP_SHARED | MAP_FIXED, data_map_fd, 0); if (CHECK(tmp2 == MAP_FAILED, "adv_mmap3", "errno %d\n", errno)) { munmap(tmp1, page_size); - munmap(tmp1 + 2*page_size, page_size); + munmap(tmp1 + 2*page_size, 2 * page_size); goto cleanup; } CHECK(tmp1 + page_size != tmp2, "adv_mmap4", @@ -211,7 +218,7 @@ void test_mmap(void) tmp2 = mmap(tmp1, 4 * page_size, PROT_READ, MAP_SHARED | MAP_FIXED, data_map_fd, 0); if (CHECK(tmp2 == MAP_FAILED, "adv_mmap5", "errno %d\n", errno)) { - munmap(tmp1, 3 * page_size); /* unmap page 1 */ + munmap(tmp1, 4 * page_size); /* unmap page 1 */ goto cleanup; } CHECK(tmp1 != tmp2, "adv_mmap6", "tmp1: %p, tmp2: %p\n", tmp1, tmp2); -- 2.25.1

5 years, 1 month

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[PATCH AUTOSEL 5.8 61/63] bpf: selftests: global_funcs: Check err_str before strstr

by Sasha Levin

From: Yauheni Kaliuta <yauheni.kaliuta(a)redhat.com> [ Upstream commit c210773d6c6f595f5922d56b7391fe343bc7310e ] The error path in libbpf.c:load_program() has calls to pr_warn() which ends up for global_funcs tests to test_global_funcs.c:libbpf_debug_print(). For the tests with no struct test_def::err_str initialized with a string, it causes call of strstr() with NULL as the second argument and it segfaults. Fix it by calling strstr() only for non-NULL err_str. Signed-off-by: Yauheni Kaliuta <yauheni.kaliuta(a)redhat.com> Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Acked-by: Yonghong Song <yhs(a)fb.com> Link: https://lore.kernel.org/bpf/20200820115843.39454-1-yauheni.kaliuta@redhat.c… Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/bpf/prog_tests/test_global_funcs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c b/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c index 25b068591e9a4..193002b14d7f6 100644 --- a/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c +++ b/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c @@ -19,7 +19,7 @@ static int libbpf_debug_print(enum libbpf_print_level level, log_buf = va_arg(args, char *); if (!log_buf) goto out; - if (strstr(log_buf, err_str) == 0) + if (err_str && strstr(log_buf, err_str) == 0) found = true; out: printf(format, log_buf); -- 2.25.1

5 years, 1 month

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[PATCH AUTOSEL 5.8 37/63] selftests: disable rp_filter for icmp_redirect.sh

by Sasha Levin

From: David Ahern <dsahern(a)kernel.org> [ Upstream commit bcf7ddb0186d366f761f86196b480ea6dd2dc18c ] h1 is initially configured to reach h2 via r1 rather than the more direct path through r2. If rp_filter is set and inherited for r2, forwarding fails since the source address of h1 is reachable from eth0 vs the packet coming to it via r1 and eth1. Since rp_filter setting affects the test, explicitly reset it. Signed-off-by: David Ahern <dsahern(a)kernel.org> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/net/icmp_redirect.sh | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/testing/selftests/net/icmp_redirect.sh b/tools/testing/selftests/net/icmp_redirect.sh index 18c5de53558af..bf361f30d6ef9 100755 --- a/tools/testing/selftests/net/icmp_redirect.sh +++ b/tools/testing/selftests/net/icmp_redirect.sh @@ -180,6 +180,8 @@ setup() ;; r[12]) ip netns exec $ns sysctl -q -w net.ipv4.ip_forward=1 ip netns exec $ns sysctl -q -w net.ipv4.conf.all.send_redirects=1 + ip netns exec $ns sysctl -q -w net.ipv4.conf.default.rp_filter=0 + ip netns exec $ns sysctl -q -w net.ipv4.conf.all.rp_filter=0 ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=1 ip netns exec $ns sysctl -q -w net.ipv6.route.mtu_expires=10 -- 2.25.1

5 years, 1 month

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[PATCH AUTOSEL 5.8 28/63] selftests/bpf: Correct various core_reloc 64-bit assumptions

by Sasha Levin

From: Andrii Nakryiko <andriin(a)fb.com> [ Upstream commit 5705d705832f74395c5465ce93192688f543006a ] Ensure that types are memory layout- and field alignment-compatible regardless of 32/64-bitness mix of libbpf and BPF architecture. Signed-off-by: Andrii Nakryiko <andriin(a)fb.com> Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Link: https://lore.kernel.org/bpf/20200813204945.1020225-8-andriin@fb.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- .../selftests/bpf/prog_tests/core_reloc.c | 20 +++--- .../selftests/bpf/progs/core_reloc_types.h | 69 ++++++++++--------- 2 files changed, 47 insertions(+), 42 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/core_reloc.c b/tools/testing/selftests/bpf/prog_tests/core_reloc.c index 084ed26a7d78c..a54eafc5e4b31 100644 --- a/tools/testing/selftests/bpf/prog_tests/core_reloc.c +++ b/tools/testing/selftests/bpf/prog_tests/core_reloc.c @@ -237,8 +237,8 @@ .union_sz = sizeof(((type *)0)->union_field), \ .arr_sz = sizeof(((type *)0)->arr_field), \ .arr_elem_sz = sizeof(((type *)0)->arr_field[0]), \ - .ptr_sz = sizeof(((type *)0)->ptr_field), \ - .enum_sz = sizeof(((type *)0)->enum_field), \ + .ptr_sz = 8, /* always 8-byte pointer for BPF */ \ + .enum_sz = sizeof(((type *)0)->enum_field), \ } #define SIZE_CASE(name) { \ @@ -432,20 +432,20 @@ static struct core_reloc_test_case test_cases[] = { .sb4 = -1, .sb20 = -0x17654321, .u32 = 0xBEEF, - .s32 = -0x3FEDCBA987654321, + .s32 = -0x3FEDCBA987654321LL, }), BITFIELDS_CASE(bitfields___bitfield_vs_int, { - .ub1 = 0xFEDCBA9876543210, + .ub1 = 0xFEDCBA9876543210LL, .ub2 = 0xA6, - .ub7 = -0x7EDCBA987654321, - .sb4 = -0x6123456789ABCDE, - .sb20 = 0xD00D, + .ub7 = -0x7EDCBA987654321LL, + .sb4 = -0x6123456789ABCDELL, + .sb20 = 0xD00DLL, .u32 = -0x76543, - .s32 = 0x0ADEADBEEFBADB0B, + .s32 = 0x0ADEADBEEFBADB0BLL, }), BITFIELDS_CASE(bitfields___just_big_enough, { - .ub1 = 0xF, - .ub2 = 0x0812345678FEDCBA, + .ub1 = 0xFLL, + .ub2 = 0x0812345678FEDCBALL, }), BITFIELDS_ERR_CASE(bitfields___err_too_big_bitfield), diff --git a/tools/testing/selftests/bpf/progs/core_reloc_types.h b/tools/testing/selftests/bpf/progs/core_reloc_types.h index 34d84717c9464..69139ed662164 100644 --- a/tools/testing/selftests/bpf/progs/core_reloc_types.h +++ b/tools/testing/selftests/bpf/progs/core_reloc_types.h @@ -1,5 +1,10 @@ #include <stdint.h> #include <stdbool.h> + +void preserce_ptr_sz_fn(long x) {} + +#define __bpf_aligned __attribute__((aligned(8))) + /* * KERNEL */ @@ -444,51 +449,51 @@ struct core_reloc_primitives { char a; int b; enum core_reloc_primitives_enum c; - void *d; - int (*f)(const char *); + void *d __bpf_aligned; + int (*f)(const char *) __bpf_aligned; }; struct core_reloc_primitives___diff_enum_def { char a; int b; - void *d; - int (*f)(const char *); + void *d __bpf_aligned; + int (*f)(const char *) __bpf_aligned; enum { X = 100, Y = 200, - } c; /* inline enum def with differing set of values */ + } c __bpf_aligned; /* inline enum def with differing set of values */ }; struct core_reloc_primitives___diff_func_proto { - void (*f)(int); /* incompatible function prototype */ - void *d; - enum core_reloc_primitives_enum c; + void (*f)(int) __bpf_aligned; /* incompatible function prototype */ + void *d __bpf_aligned; + enum core_reloc_primitives_enum c __bpf_aligned; int b; char a; }; struct core_reloc_primitives___diff_ptr_type { - const char * const d; /* different pointee type + modifiers */ - char a; + const char * const d __bpf_aligned; /* different pointee type + modifiers */ + char a __bpf_aligned; int b; enum core_reloc_primitives_enum c; - int (*f)(const char *); + int (*f)(const char *) __bpf_aligned; }; struct core_reloc_primitives___err_non_enum { char a[1]; int b; int c; /* int instead of enum */ - void *d; - int (*f)(const char *); + void *d __bpf_aligned; + int (*f)(const char *) __bpf_aligned; }; struct core_reloc_primitives___err_non_int { char a[1]; - int *b; /* ptr instead of int */ - enum core_reloc_primitives_enum c; - void *d; - int (*f)(const char *); + int *b __bpf_aligned; /* ptr instead of int */ + enum core_reloc_primitives_enum c __bpf_aligned; + void *d __bpf_aligned; + int (*f)(const char *) __bpf_aligned; }; struct core_reloc_primitives___err_non_ptr { @@ -496,7 +501,7 @@ struct core_reloc_primitives___err_non_ptr { int b; enum core_reloc_primitives_enum c; int d; /* int instead of ptr */ - int (*f)(const char *); + int (*f)(const char *) __bpf_aligned; }; /* @@ -507,7 +512,7 @@ struct core_reloc_mods_output { }; typedef const int int_t; -typedef const char *char_ptr_t; +typedef const char *char_ptr_t __bpf_aligned; typedef const int arr_t[7]; struct core_reloc_mods_substruct { @@ -523,9 +528,9 @@ typedef struct { struct core_reloc_mods { int a; int_t b; - char *c; + char *c __bpf_aligned; char_ptr_t d; - int e[3]; + int e[3] __bpf_aligned; arr_t f; struct core_reloc_mods_substruct g; core_reloc_mods_substruct_t h; @@ -535,9 +540,9 @@ struct core_reloc_mods { struct core_reloc_mods___mod_swap { int b; int_t a; - char *d; + char *d __bpf_aligned; char_ptr_t c; - int f[3]; + int f[3] __bpf_aligned; arr_t e; struct { int y; @@ -555,7 +560,7 @@ typedef arr1_t arr2_t; typedef arr2_t arr3_t; typedef arr3_t arr4_t; -typedef const char * const volatile fancy_char_ptr_t; +typedef const char * const volatile fancy_char_ptr_t __bpf_aligned; typedef core_reloc_mods_substruct_t core_reloc_mods_substruct_tt; @@ -567,7 +572,7 @@ struct core_reloc_mods___typedefs { arr4_t e; fancy_char_ptr_t d; fancy_char_ptr_t c; - int3_t b; + int3_t b __bpf_aligned; int3_t a; }; @@ -739,19 +744,19 @@ struct core_reloc_bitfields___bit_sz_change { int8_t sb4: 1; /* 4 -> 1 */ int32_t sb20: 30; /* 20 -> 30 */ /* non-bitfields */ - uint16_t u32; /* 32 -> 16 */ - int64_t s32; /* 32 -> 64 */ + uint16_t u32; /* 32 -> 16 */ + int64_t s32 __bpf_aligned; /* 32 -> 64 */ }; /* turn bitfield into non-bitfield and vice versa */ struct core_reloc_bitfields___bitfield_vs_int { uint64_t ub1; /* 3 -> 64 non-bitfield */ uint8_t ub2; /* 20 -> 8 non-bitfield */ - int64_t ub7; /* 7 -> 64 non-bitfield signed */ - int64_t sb4; /* 4 -> 64 non-bitfield signed */ - uint64_t sb20; /* 20 -> 16 non-bitfield unsigned */ - int32_t u32: 20; /* 32 non-bitfield -> 20 bitfield */ - uint64_t s32: 60; /* 32 non-bitfield -> 60 bitfield */ + int64_t ub7 __bpf_aligned; /* 7 -> 64 non-bitfield signed */ + int64_t sb4 __bpf_aligned; /* 4 -> 64 non-bitfield signed */ + uint64_t sb20 __bpf_aligned; /* 20 -> 16 non-bitfield unsigned */ + int32_t u32: 20; /* 32 non-bitfield -> 20 bitfield */ + uint64_t s32: 60 __bpf_aligned; /* 32 non-bitfield -> 60 bitfield */ }; struct core_reloc_bitfields___just_big_enough { -- 2.25.1

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[PATCH AUTOSEL 5.8 27/63] selftests/bpf: Fix btf_dump test cases on 32-bit arches

by Sasha Levin

From: Andrii Nakryiko <andriin(a)fb.com> [ Upstream commit eed7818adf03e874994b966aa33bc00204dd275a ] Fix btf_dump test cases by hard-coding BPF's pointer size of 8 bytes for cases where it's impossible to deterimne the pointer size (no long type in BTF). In cases where it's known, validate libbpf correctly determines it as 8. Signed-off-by: Andrii Nakryiko <andriin(a)fb.com> Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Link: https://lore.kernel.org/bpf/20200813204945.1020225-6-andriin@fb.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- .../selftests/bpf/prog_tests/btf_dump.c | 27 ++++++++++++++----- 1 file changed, 20 insertions(+), 7 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/btf_dump.c b/tools/testing/selftests/bpf/prog_tests/btf_dump.c index cb33a7ee4e04f..39fb81d9daeb5 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf_dump.c +++ b/tools/testing/selftests/bpf/prog_tests/btf_dump.c @@ -12,15 +12,16 @@ void btf_dump_printf(void *ctx, const char *fmt, va_list args) static struct btf_dump_test_case { const char *name; const char *file; + bool known_ptr_sz; struct btf_dump_opts opts; } btf_dump_test_cases[] = { - {"btf_dump: syntax", "btf_dump_test_case_syntax", {}}, - {"btf_dump: ordering", "btf_dump_test_case_ordering", {}}, - {"btf_dump: padding", "btf_dump_test_case_padding", {}}, - {"btf_dump: packing", "btf_dump_test_case_packing", {}}, - {"btf_dump: bitfields", "btf_dump_test_case_bitfields", {}}, - {"btf_dump: multidim", "btf_dump_test_case_multidim", {}}, - {"btf_dump: namespacing", "btf_dump_test_case_namespacing", {}}, + {"btf_dump: syntax", "btf_dump_test_case_syntax", true, {}}, + {"btf_dump: ordering", "btf_dump_test_case_ordering", false, {}}, + {"btf_dump: padding", "btf_dump_test_case_padding", true, {}}, + {"btf_dump: packing", "btf_dump_test_case_packing", true, {}}, + {"btf_dump: bitfields", "btf_dump_test_case_bitfields", true, {}}, + {"btf_dump: multidim", "btf_dump_test_case_multidim", false, {}}, + {"btf_dump: namespacing", "btf_dump_test_case_namespacing", false, {}}, }; static int btf_dump_all_types(const struct btf *btf, @@ -62,6 +63,18 @@ static int test_btf_dump_case(int n, struct btf_dump_test_case *t) goto done; } + /* tests with t->known_ptr_sz have no "long" or "unsigned long" type, + * so it's impossible to determine correct pointer size; but if they + * do, it should be 8 regardless of host architecture, becaues BPF + * target is always 64-bit + */ + if (!t->known_ptr_sz) { + btf__set_pointer_size(btf, 8); + } else { + CHECK(btf__pointer_size(btf) != 8, "ptr_sz", "exp %d, got %zu\n", + 8, btf__pointer_size(btf)); + } + snprintf(out_file, sizeof(out_file), "/tmp/%s.output.XXXXXX", t->file); fd = mkstemp(out_file); if (CHECK(fd < 0, "create_tmp", "failed to create file: %d\n", fd)) { -- 2.25.1

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[PATCH AUTOSEL 5.8 26/63] selftest/bpf: Fix compilation warnings in 32-bit mode

by Sasha Levin

From: Andrii Nakryiko <andriin(a)fb.com> [ Upstream commit 9028bbcc3e12510cac13a9554f1a1e39667a4387 ] Fix compilation warnings emitted when compiling selftests for 32-bit platform (x86 in my case). Signed-off-by: Andrii Nakryiko <andriin(a)fb.com> Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Link: https://lore.kernel.org/bpf/20200813204945.1020225-3-andriin@fb.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c | 8 ++++---- tools/testing/selftests/bpf/prog_tests/core_extern.c | 4 ++-- tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c | 6 +++--- tools/testing/selftests/bpf/prog_tests/flow_dissector.c | 2 +- tools/testing/selftests/bpf/prog_tests/global_data.c | 6 +++--- tools/testing/selftests/bpf/prog_tests/prog_run_xattr.c | 2 +- tools/testing/selftests/bpf/prog_tests/skb_ctx.c | 2 +- tools/testing/selftests/bpf/test_btf.c | 8 ++++---- tools/testing/selftests/bpf/test_progs.h | 5 +++++ 9 files changed, 24 insertions(+), 19 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c b/tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c index 7afa4160416f6..284d5921c3458 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c @@ -159,15 +159,15 @@ void test_bpf_obj_id(void) /* Check getting link info */ info_len = sizeof(struct bpf_link_info) * 2; bzero(&link_infos[i], info_len); - link_infos[i].raw_tracepoint.tp_name = (__u64)&tp_name; + link_infos[i].raw_tracepoint.tp_name = ptr_to_u64(&tp_name); link_infos[i].raw_tracepoint.tp_name_len = sizeof(tp_name); err = bpf_obj_get_info_by_fd(bpf_link__fd(links[i]), &link_infos[i], &info_len); if (CHECK(err || link_infos[i].type != BPF_LINK_TYPE_RAW_TRACEPOINT || link_infos[i].prog_id != prog_infos[i].id || - link_infos[i].raw_tracepoint.tp_name != (__u64)&tp_name || - strcmp((char *)link_infos[i].raw_tracepoint.tp_name, + link_infos[i].raw_tracepoint.tp_name != ptr_to_u64(&tp_name) || + strcmp(u64_to_ptr(link_infos[i].raw_tracepoint.tp_name), "sys_enter") || info_len != sizeof(struct bpf_link_info), "get-link-info(fd)", @@ -178,7 +178,7 @@ void test_bpf_obj_id(void) link_infos[i].type, BPF_LINK_TYPE_RAW_TRACEPOINT, link_infos[i].id, link_infos[i].prog_id, prog_infos[i].id, - (char *)link_infos[i].raw_tracepoint.tp_name, + (const char *)u64_to_ptr(link_infos[i].raw_tracepoint.tp_name), "sys_enter")) goto done; diff --git a/tools/testing/selftests/bpf/prog_tests/core_extern.c b/tools/testing/selftests/bpf/prog_tests/core_extern.c index b093787e94489..1931a158510e0 100644 --- a/tools/testing/selftests/bpf/prog_tests/core_extern.c +++ b/tools/testing/selftests/bpf/prog_tests/core_extern.c @@ -159,8 +159,8 @@ void test_core_extern(void) exp = (uint64_t *)&t->data; for (j = 0; j < n; j++) { CHECK(got[j] != exp[j], "check_res", - "result #%d: expected %lx, but got %lx\n", - j, exp[j], got[j]); + "result #%d: expected %llx, but got %llx\n", + j, (__u64)exp[j], (__u64)got[j]); } cleanup: test_core_extern__destroy(skel); diff --git a/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c b/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c index a895bfed55db0..197d0d217b56b 100644 --- a/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c +++ b/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c @@ -16,7 +16,7 @@ static void test_fexit_bpf2bpf_common(const char *obj_file, __u32 duration = 0, retval; struct bpf_map *data_map; const int zero = 0; - u64 *result = NULL; + __u64 *result = NULL; err = bpf_prog_load(target_obj_file, BPF_PROG_TYPE_UNSPEC, &pkt_obj, &pkt_fd); @@ -29,7 +29,7 @@ static void test_fexit_bpf2bpf_common(const char *obj_file, link = calloc(sizeof(struct bpf_link *), prog_cnt); prog = calloc(sizeof(struct bpf_program *), prog_cnt); - result = malloc((prog_cnt + 32 /* spare */) * sizeof(u64)); + result = malloc((prog_cnt + 32 /* spare */) * sizeof(__u64)); if (CHECK(!link || !prog || !result, "alloc_memory", "failed to alloc memory")) goto close_prog; @@ -72,7 +72,7 @@ static void test_fexit_bpf2bpf_common(const char *obj_file, goto close_prog; for (i = 0; i < prog_cnt; i++) - if (CHECK(result[i] != 1, "result", "fexit_bpf2bpf failed err %ld\n", + if (CHECK(result[i] != 1, "result", "fexit_bpf2bpf failed err %llu\n", result[i])) goto close_prog; diff --git a/tools/testing/selftests/bpf/prog_tests/flow_dissector.c b/tools/testing/selftests/bpf/prog_tests/flow_dissector.c index f11f187990e95..cd6dc80edf18e 100644 --- a/tools/testing/selftests/bpf/prog_tests/flow_dissector.c +++ b/tools/testing/selftests/bpf/prog_tests/flow_dissector.c @@ -591,7 +591,7 @@ void test_flow_dissector(void) CHECK_ATTR(tattr.data_size_out != sizeof(flow_keys) || err || tattr.retval != 1, tests[i].name, - "err %d errno %d retval %d duration %d size %u/%lu\n", + "err %d errno %d retval %d duration %d size %u/%zu\n", err, errno, tattr.retval, tattr.duration, tattr.data_size_out, sizeof(flow_keys)); CHECK_FLOW_KEYS(tests[i].name, flow_keys, tests[i].keys); diff --git a/tools/testing/selftests/bpf/prog_tests/global_data.c b/tools/testing/selftests/bpf/prog_tests/global_data.c index e3cb62b0a110e..9efa7e50eab27 100644 --- a/tools/testing/selftests/bpf/prog_tests/global_data.c +++ b/tools/testing/selftests/bpf/prog_tests/global_data.c @@ -5,7 +5,7 @@ static void test_global_data_number(struct bpf_object *obj, __u32 duration) { int i, err, map_fd; - uint64_t num; + __u64 num; map_fd = bpf_find_map(__func__, obj, "result_number"); if (CHECK_FAIL(map_fd < 0)) @@ -14,7 +14,7 @@ static void test_global_data_number(struct bpf_object *obj, __u32 duration) struct { char *name; uint32_t key; - uint64_t num; + __u64 num; } tests[] = { { "relocate .bss reference", 0, 0 }, { "relocate .data reference", 1, 42 }, @@ -32,7 +32,7 @@ static void test_global_data_number(struct bpf_object *obj, __u32 duration) for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) { err = bpf_map_lookup_elem(map_fd, &tests[i].key, &num); CHECK(err || num != tests[i].num, tests[i].name, - "err %d result %lx expected %lx\n", + "err %d result %llx expected %llx\n", err, num, tests[i].num); } } diff --git a/tools/testing/selftests/bpf/prog_tests/prog_run_xattr.c b/tools/testing/selftests/bpf/prog_tests/prog_run_xattr.c index dde2b7ae7bc9e..935a294f049a2 100644 --- a/tools/testing/selftests/bpf/prog_tests/prog_run_xattr.c +++ b/tools/testing/selftests/bpf/prog_tests/prog_run_xattr.c @@ -28,7 +28,7 @@ void test_prog_run_xattr(void) "err %d errno %d retval %d\n", err, errno, tattr.retval); CHECK_ATTR(tattr.data_size_out != sizeof(pkt_v4), "data_size_out", - "incorrect output size, want %lu have %u\n", + "incorrect output size, want %zu have %u\n", sizeof(pkt_v4), tattr.data_size_out); CHECK_ATTR(buf[5] != 0, "overflow", diff --git a/tools/testing/selftests/bpf/prog_tests/skb_ctx.c b/tools/testing/selftests/bpf/prog_tests/skb_ctx.c index 7021b92af3134..c61b2b69710a9 100644 --- a/tools/testing/selftests/bpf/prog_tests/skb_ctx.c +++ b/tools/testing/selftests/bpf/prog_tests/skb_ctx.c @@ -80,7 +80,7 @@ void test_skb_ctx(void) CHECK_ATTR(tattr.ctx_size_out != sizeof(skb), "ctx_size_out", - "incorrect output size, want %lu have %u\n", + "incorrect output size, want %zu have %u\n", sizeof(skb), tattr.ctx_size_out); for (i = 0; i < 5; i++) diff --git a/tools/testing/selftests/bpf/test_btf.c b/tools/testing/selftests/bpf/test_btf.c index 305fae8f80a98..c75fc6447186a 100644 --- a/tools/testing/selftests/bpf/test_btf.c +++ b/tools/testing/selftests/bpf/test_btf.c @@ -3883,7 +3883,7 @@ static int test_big_btf_info(unsigned int test_num) info_garbage.garbage = 0; err = bpf_obj_get_info_by_fd(btf_fd, info, &info_len); if (CHECK(err || info_len != sizeof(*info), - "err:%d errno:%d info_len:%u sizeof(*info):%lu", + "err:%d errno:%d info_len:%u sizeof(*info):%zu", err, errno, info_len, sizeof(*info))) { err = -1; goto done; @@ -4094,7 +4094,7 @@ static int do_test_get_info(unsigned int test_num) if (CHECK(err || !info.id || info_len != sizeof(info) || info.btf_size != raw_btf_size || (ret = memcmp(raw_btf, user_btf, expected_nbytes)), - "err:%d errno:%d info.id:%u info_len:%u sizeof(info):%lu raw_btf_size:%u info.btf_size:%u expected_nbytes:%u memcmp:%d", + "err:%d errno:%d info.id:%u info_len:%u sizeof(info):%zu raw_btf_size:%u info.btf_size:%u expected_nbytes:%u memcmp:%d", err, errno, info.id, info_len, sizeof(info), raw_btf_size, info.btf_size, expected_nbytes, ret)) { err = -1; @@ -4730,7 +4730,7 @@ ssize_t get_pprint_expected_line(enum pprint_mapv_kind_t mapv_kind, nexpected_line = snprintf(expected_line, line_size, "%s%u: {%u,0,%d,0x%x,0x%x,0x%x," - "{%lu|[%u,%u,%u,%u,%u,%u,%u,%u]},%s," + "{%llu|[%u,%u,%u,%u,%u,%u,%u,%u]},%s," "%u,0x%x,[[%d,%d],[%d,%d]]}\n", percpu_map ? "\tcpu" : "", percpu_map ? cpu : next_key, @@ -4738,7 +4738,7 @@ ssize_t get_pprint_expected_line(enum pprint_mapv_kind_t mapv_kind, v->unused_bits2a, v->bits28, v->unused_bits2b, - v->ui64, + (__u64)v->ui64, v->ui8a[0], v->ui8a[1], v->ui8a[2], v->ui8a[3], v->ui8a[4], v->ui8a[5], diff --git a/tools/testing/selftests/bpf/test_progs.h b/tools/testing/selftests/bpf/test_progs.h index b809246039181..b5670350e3263 100644 --- a/tools/testing/selftests/bpf/test_progs.h +++ b/tools/testing/selftests/bpf/test_progs.h @@ -133,6 +133,11 @@ static inline __u64 ptr_to_u64(const void *ptr) return (__u64) (unsigned long) ptr; } +static inline void *u64_to_ptr(__u64 ptr) +{ + return (void *) (unsigned long) ptr; +} + int bpf_find_map(const char *test, struct bpf_object *obj, const char *name); int compare_map_keys(int map1_fd, int map2_fd); int compare_stack_ips(int smap_fd, int amap_fd, int stack_trace_len); -- 2.25.1

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[PATCH AUTOSEL 5.8 21/63] selftests/bpf: Fix segmentation fault in test_progs

by Sasha Levin

From: Jianlin Lv <Jianlin.Lv(a)arm.com> [ Upstream commit 0390c429dbed4068bd2cd8dded937d9a5ec24cd2 ] test_progs reports the segmentation fault as below: $ sudo ./test_progs -t mmap --verbose test_mmap:PASS:skel_open_and_load 0 nsec [...] test_mmap:PASS:adv_mmap1 0 nsec test_mmap:PASS:adv_mmap2 0 nsec test_mmap:PASS:adv_mmap3 0 nsec test_mmap:PASS:adv_mmap4 0 nsec Segmentation fault This issue was triggered because mmap() and munmap() used inconsistent length parameters; mmap() creates a new mapping of 3 * page_size, but the length parameter set in the subsequent re-map and munmap() functions is 4 * page_size; this leads to the destruction of the process space. To fix this issue, first create 4 pages of anonymous mapping, then do all the mmap() with MAP_FIXED. Another issue is that when unmap the second page fails, the length parameter to delete tmp1 mappings should be 4 * page_size. Signed-off-by: Jianlin Lv <Jianlin.Lv(a)arm.com> Signed-off-by: Daniel Borkmann <daniel(a)iogearbox.net> Acked-by: Andrii Nakryiko <andriin(a)fb.com> Link: https://lore.kernel.org/bpf/20200810153940.125508-1-Jianlin.Lv@arm.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/bpf/prog_tests/mmap.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/mmap.c b/tools/testing/selftests/bpf/prog_tests/mmap.c index 43d0b5578f461..9c3c5c0f068fb 100644 --- a/tools/testing/selftests/bpf/prog_tests/mmap.c +++ b/tools/testing/selftests/bpf/prog_tests/mmap.c @@ -21,7 +21,7 @@ void test_mmap(void) const long page_size = sysconf(_SC_PAGE_SIZE); int err, duration = 0, i, data_map_fd, data_map_id, tmp_fd, rdmap_fd; struct bpf_map *data_map, *bss_map; - void *bss_mmaped = NULL, *map_mmaped = NULL, *tmp1, *tmp2; + void *bss_mmaped = NULL, *map_mmaped = NULL, *tmp0, *tmp1, *tmp2; struct test_mmap__bss *bss_data; struct bpf_map_info map_info; __u32 map_info_sz = sizeof(map_info); @@ -183,16 +183,23 @@ void test_mmap(void) /* check some more advanced mmap() manipulations */ + tmp0 = mmap(NULL, 4 * page_size, PROT_READ, MAP_SHARED | MAP_ANONYMOUS, + -1, 0); + if (CHECK(tmp0 == MAP_FAILED, "adv_mmap0", "errno %d\n", errno)) + goto cleanup; + /* map all but last page: pages 1-3 mapped */ - tmp1 = mmap(NULL, 3 * page_size, PROT_READ, MAP_SHARED, + tmp1 = mmap(tmp0, 3 * page_size, PROT_READ, MAP_SHARED | MAP_FIXED, data_map_fd, 0); - if (CHECK(tmp1 == MAP_FAILED, "adv_mmap1", "errno %d\n", errno)) + if (CHECK(tmp0 != tmp1, "adv_mmap1", "tmp0: %p, tmp1: %p\n", tmp0, tmp1)) { + munmap(tmp0, 4 * page_size); goto cleanup; + } /* unmap second page: pages 1, 3 mapped */ err = munmap(tmp1 + page_size, page_size); if (CHECK(err, "adv_mmap2", "errno %d\n", errno)) { - munmap(tmp1, map_sz); + munmap(tmp1, 4 * page_size); goto cleanup; } @@ -201,7 +208,7 @@ void test_mmap(void) MAP_SHARED | MAP_FIXED, data_map_fd, 0); if (CHECK(tmp2 == MAP_FAILED, "adv_mmap3", "errno %d\n", errno)) { munmap(tmp1, page_size); - munmap(tmp1 + 2*page_size, page_size); + munmap(tmp1 + 2*page_size, 2 * page_size); goto cleanup; } CHECK(tmp1 + page_size != tmp2, "adv_mmap4", @@ -211,7 +218,7 @@ void test_mmap(void) tmp2 = mmap(tmp1, 4 * page_size, PROT_READ, MAP_SHARED | MAP_FIXED, data_map_fd, 0); if (CHECK(tmp2 == MAP_FAILED, "adv_mmap5", "errno %d\n", errno)) { - munmap(tmp1, 3 * page_size); /* unmap page 1 */ + munmap(tmp1, 4 * page_size); /* unmap page 1 */ goto cleanup; } CHECK(tmp1 != tmp2, "adv_mmap6", "tmp1: %p, tmp2: %p\n", tmp1, tmp2); -- 2.25.1

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[PATCH AUTOSEL 4.4 12/22] selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

by Sasha Levin

From: "Desnes A. Nunes do Rosario" <desnesn(a)linux.ibm.com> [ Upstream commit 3337bf41e0dd70b4064cdf60acdfcdc2d050066c ] An extra count on ebb_state.stats.pmc_count[PMC_INDEX(pmc)] is being per- formed when count_pmc() is used to reset PMCs on a few selftests. This extra pmc_count can occasionally invalidate results, such as the ones from cycles_test shown hereafter. The ebb_check_count() failed with an above the upper limit error due to the extra value on ebb_state.stats.pmc_count. Furthermore, this extra count is also indicated by extra PMC1 trace_log on the output of the cycle test (as well as on pmc56_overflow_test): ========== ... [21]: counter = 8 [22]: register SPRN_MMCR0 = 0x0000000080000080 [23]: register SPRN_PMC1 = 0x0000000080000004 [24]: counter = 9 [25]: register SPRN_MMCR0 = 0x0000000080000080 [26]: register SPRN_PMC1 = 0x0000000080000004 [27]: counter = 10 [28]: register SPRN_MMCR0 = 0x0000000080000080 [29]: register SPRN_PMC1 = 0x0000000080000004 >> [30]: register SPRN_PMC1 = 0x000000004000051e PMC1 count (0x280000546) above upper limit 0x2800003e8 (+0x15e) [FAIL] Test FAILED on line 52 failure: cycles ========== Signed-off-by: Desnes A. Nunes do Rosario <desnesn(a)linux.ibm.com> Tested-by: Sachin Sant <sachinp(a)linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> Link: https://lore.kernel.org/r/20200626164737.21943-1-desnesn@linux.ibm.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- .../selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c | 2 -- tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c | 2 -- .../selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c | 2 -- .../selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c | 2 -- tools/testing/selftests/powerpc/pmu/ebb/ebb.c | 2 -- .../selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c | 2 -- .../selftests/powerpc/pmu/ebb/lost_exception_test.c | 1 - .../testing/selftests/powerpc/pmu/ebb/multi_counter_test.c | 7 ------- .../selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c | 2 -- .../testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c | 2 -- .../selftests/powerpc/pmu/ebb/pmc56_overflow_test.c | 2 -- 11 files changed, 26 deletions(-) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c index 94110b1dcd3d8..031baa43646fb 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c @@ -91,8 +91,6 @@ int back_to_back_ebbs(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c index 7c57a8d79535d..361e0be9df9ae 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c @@ -42,8 +42,6 @@ int cycles(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c index ecf5ee3283a3e..fe7d0dc2a1a26 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c @@ -99,8 +99,6 @@ int cycles_with_freeze(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); printf("EBBs while frozen %d\n", ebbs_while_frozen); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c index c0faba520b35c..b9b30f974b5ea 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c @@ -71,8 +71,6 @@ int cycles_with_mmcr2(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c index 9729d9f902187..4154498bc5dc5 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c @@ -398,8 +398,6 @@ int ebb_child(union pipe read_pipe, union pipe write_pipe) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c index a991d2ea8d0a1..174e4f4dae6c0 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c @@ -38,8 +38,6 @@ static int victim_child(union pipe read_pipe, union pipe write_pipe) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); FAIL_IF(ebb_state.stats.ebb_count == 0); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c index eb8acb78bc6c1..531083accfcad 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c @@ -75,7 +75,6 @@ static int test_body(void) ebb_freeze_pmcs(); ebb_global_disable(); - count_pmc(4, sample_period); mtspr(SPRN_PMC4, 0xdead); dump_summary_ebb_state(); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c index 6ff8c8ff27d66..035c02273cd49 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c @@ -70,13 +70,6 @@ int multi_counter(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - count_pmc(2, sample_period); - count_pmc(3, sample_period); - count_pmc(4, sample_period); - count_pmc(5, sample_period); - count_pmc(6, sample_period); - dump_ebb_state(); for (i = 0; i < 6; i++) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c index 037cb6154f360..3e9d4ac965c85 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c @@ -61,8 +61,6 @@ static int cycles_child(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_summary_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c index c5fa64790c22e..d90891fe96a32 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c @@ -82,8 +82,6 @@ static int test_body(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); if (mmcr0_mismatch) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c index 30e1ac62e8cb4..8ca92b9ee5b01 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c @@ -76,8 +76,6 @@ int pmc56_overflow(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(2, sample_period); - dump_ebb_state(); printf("PMC5/6 overflow %d\n", pmc56_overflowed); -- 2.25.1

5 years, 1 month

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[PATCH AUTOSEL 4.9 14/26] selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

by Sasha Levin

From: "Desnes A. Nunes do Rosario" <desnesn(a)linux.ibm.com> [ Upstream commit 3337bf41e0dd70b4064cdf60acdfcdc2d050066c ] An extra count on ebb_state.stats.pmc_count[PMC_INDEX(pmc)] is being per- formed when count_pmc() is used to reset PMCs on a few selftests. This extra pmc_count can occasionally invalidate results, such as the ones from cycles_test shown hereafter. The ebb_check_count() failed with an above the upper limit error due to the extra value on ebb_state.stats.pmc_count. Furthermore, this extra count is also indicated by extra PMC1 trace_log on the output of the cycle test (as well as on pmc56_overflow_test): ========== ... [21]: counter = 8 [22]: register SPRN_MMCR0 = 0x0000000080000080 [23]: register SPRN_PMC1 = 0x0000000080000004 [24]: counter = 9 [25]: register SPRN_MMCR0 = 0x0000000080000080 [26]: register SPRN_PMC1 = 0x0000000080000004 [27]: counter = 10 [28]: register SPRN_MMCR0 = 0x0000000080000080 [29]: register SPRN_PMC1 = 0x0000000080000004 >> [30]: register SPRN_PMC1 = 0x000000004000051e PMC1 count (0x280000546) above upper limit 0x2800003e8 (+0x15e) [FAIL] Test FAILED on line 52 failure: cycles ========== Signed-off-by: Desnes A. Nunes do Rosario <desnesn(a)linux.ibm.com> Tested-by: Sachin Sant <sachinp(a)linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> Link: https://lore.kernel.org/r/20200626164737.21943-1-desnesn@linux.ibm.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- .../selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c | 2 -- tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c | 2 -- .../selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c | 2 -- .../selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c | 2 -- tools/testing/selftests/powerpc/pmu/ebb/ebb.c | 2 -- .../selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c | 2 -- .../selftests/powerpc/pmu/ebb/lost_exception_test.c | 1 - .../testing/selftests/powerpc/pmu/ebb/multi_counter_test.c | 7 ------- .../selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c | 2 -- .../testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c | 2 -- .../selftests/powerpc/pmu/ebb/pmc56_overflow_test.c | 2 -- 11 files changed, 26 deletions(-) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c index 94110b1dcd3d8..031baa43646fb 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c @@ -91,8 +91,6 @@ int back_to_back_ebbs(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c index 7c57a8d79535d..361e0be9df9ae 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c @@ -42,8 +42,6 @@ int cycles(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c index ecf5ee3283a3e..fe7d0dc2a1a26 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c @@ -99,8 +99,6 @@ int cycles_with_freeze(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); printf("EBBs while frozen %d\n", ebbs_while_frozen); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c index c0faba520b35c..b9b30f974b5ea 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c @@ -71,8 +71,6 @@ int cycles_with_mmcr2(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c index 46681fec549b8..2694ae161a84a 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c @@ -396,8 +396,6 @@ int ebb_child(union pipe read_pipe, union pipe write_pipe) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c index a991d2ea8d0a1..174e4f4dae6c0 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c @@ -38,8 +38,6 @@ static int victim_child(union pipe read_pipe, union pipe write_pipe) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); FAIL_IF(ebb_state.stats.ebb_count == 0); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c index eb8acb78bc6c1..531083accfcad 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c @@ -75,7 +75,6 @@ static int test_body(void) ebb_freeze_pmcs(); ebb_global_disable(); - count_pmc(4, sample_period); mtspr(SPRN_PMC4, 0xdead); dump_summary_ebb_state(); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c index 6ff8c8ff27d66..035c02273cd49 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c @@ -70,13 +70,6 @@ int multi_counter(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - count_pmc(2, sample_period); - count_pmc(3, sample_period); - count_pmc(4, sample_period); - count_pmc(5, sample_period); - count_pmc(6, sample_period); - dump_ebb_state(); for (i = 0; i < 6; i++) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c index 037cb6154f360..3e9d4ac965c85 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c @@ -61,8 +61,6 @@ static int cycles_child(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_summary_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c index c5fa64790c22e..d90891fe96a32 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c @@ -82,8 +82,6 @@ static int test_body(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); if (mmcr0_mismatch) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c index 30e1ac62e8cb4..8ca92b9ee5b01 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c @@ -76,8 +76,6 @@ int pmc56_overflow(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(2, sample_period); - dump_ebb_state(); printf("PMC5/6 overflow %d\n", pmc56_overflowed); -- 2.25.1

5 years, 1 month

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[PATCH AUTOSEL 4.14 17/30] selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

by Sasha Levin

From: "Desnes A. Nunes do Rosario" <desnesn(a)linux.ibm.com> [ Upstream commit 3337bf41e0dd70b4064cdf60acdfcdc2d050066c ] An extra count on ebb_state.stats.pmc_count[PMC_INDEX(pmc)] is being per- formed when count_pmc() is used to reset PMCs on a few selftests. This extra pmc_count can occasionally invalidate results, such as the ones from cycles_test shown hereafter. The ebb_check_count() failed with an above the upper limit error due to the extra value on ebb_state.stats.pmc_count. Furthermore, this extra count is also indicated by extra PMC1 trace_log on the output of the cycle test (as well as on pmc56_overflow_test): ========== ... [21]: counter = 8 [22]: register SPRN_MMCR0 = 0x0000000080000080 [23]: register SPRN_PMC1 = 0x0000000080000004 [24]: counter = 9 [25]: register SPRN_MMCR0 = 0x0000000080000080 [26]: register SPRN_PMC1 = 0x0000000080000004 [27]: counter = 10 [28]: register SPRN_MMCR0 = 0x0000000080000080 [29]: register SPRN_PMC1 = 0x0000000080000004 >> [30]: register SPRN_PMC1 = 0x000000004000051e PMC1 count (0x280000546) above upper limit 0x2800003e8 (+0x15e) [FAIL] Test FAILED on line 52 failure: cycles ========== Signed-off-by: Desnes A. Nunes do Rosario <desnesn(a)linux.ibm.com> Tested-by: Sachin Sant <sachinp(a)linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> Link: https://lore.kernel.org/r/20200626164737.21943-1-desnesn@linux.ibm.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- .../selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c | 2 -- tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c | 2 -- .../selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c | 2 -- .../selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c | 2 -- tools/testing/selftests/powerpc/pmu/ebb/ebb.c | 2 -- .../selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c | 2 -- .../selftests/powerpc/pmu/ebb/lost_exception_test.c | 1 - .../testing/selftests/powerpc/pmu/ebb/multi_counter_test.c | 7 ------- .../selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c | 2 -- .../testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c | 2 -- .../selftests/powerpc/pmu/ebb/pmc56_overflow_test.c | 2 -- 11 files changed, 26 deletions(-) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c index 94110b1dcd3d8..031baa43646fb 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c @@ -91,8 +91,6 @@ int back_to_back_ebbs(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c index 7c57a8d79535d..361e0be9df9ae 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c @@ -42,8 +42,6 @@ int cycles(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c index ecf5ee3283a3e..fe7d0dc2a1a26 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c @@ -99,8 +99,6 @@ int cycles_with_freeze(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); printf("EBBs while frozen %d\n", ebbs_while_frozen); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c index c0faba520b35c..b9b30f974b5ea 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c @@ -71,8 +71,6 @@ int cycles_with_mmcr2(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c index 46681fec549b8..2694ae161a84a 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c @@ -396,8 +396,6 @@ int ebb_child(union pipe read_pipe, union pipe write_pipe) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c index a991d2ea8d0a1..174e4f4dae6c0 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c @@ -38,8 +38,6 @@ static int victim_child(union pipe read_pipe, union pipe write_pipe) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); FAIL_IF(ebb_state.stats.ebb_count == 0); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c index eb8acb78bc6c1..531083accfcad 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c @@ -75,7 +75,6 @@ static int test_body(void) ebb_freeze_pmcs(); ebb_global_disable(); - count_pmc(4, sample_period); mtspr(SPRN_PMC4, 0xdead); dump_summary_ebb_state(); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c index 6ff8c8ff27d66..035c02273cd49 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c @@ -70,13 +70,6 @@ int multi_counter(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - count_pmc(2, sample_period); - count_pmc(3, sample_period); - count_pmc(4, sample_period); - count_pmc(5, sample_period); - count_pmc(6, sample_period); - dump_ebb_state(); for (i = 0; i < 6; i++) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c index 037cb6154f360..3e9d4ac965c85 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c @@ -61,8 +61,6 @@ static int cycles_child(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_summary_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c index c5fa64790c22e..d90891fe96a32 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c @@ -82,8 +82,6 @@ static int test_body(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); if (mmcr0_mismatch) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c index 30e1ac62e8cb4..8ca92b9ee5b01 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c @@ -76,8 +76,6 @@ int pmc56_overflow(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(2, sample_period); - dump_ebb_state(); printf("PMC5/6 overflow %d\n", pmc56_overflowed); -- 2.25.1

5 years, 1 month

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[PATCH AUTOSEL 4.19 20/38] selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

by Sasha Levin

From: "Desnes A. Nunes do Rosario" <desnesn(a)linux.ibm.com> [ Upstream commit 3337bf41e0dd70b4064cdf60acdfcdc2d050066c ] An extra count on ebb_state.stats.pmc_count[PMC_INDEX(pmc)] is being per- formed when count_pmc() is used to reset PMCs on a few selftests. This extra pmc_count can occasionally invalidate results, such as the ones from cycles_test shown hereafter. The ebb_check_count() failed with an above the upper limit error due to the extra value on ebb_state.stats.pmc_count. Furthermore, this extra count is also indicated by extra PMC1 trace_log on the output of the cycle test (as well as on pmc56_overflow_test): ========== ... [21]: counter = 8 [22]: register SPRN_MMCR0 = 0x0000000080000080 [23]: register SPRN_PMC1 = 0x0000000080000004 [24]: counter = 9 [25]: register SPRN_MMCR0 = 0x0000000080000080 [26]: register SPRN_PMC1 = 0x0000000080000004 [27]: counter = 10 [28]: register SPRN_MMCR0 = 0x0000000080000080 [29]: register SPRN_PMC1 = 0x0000000080000004 >> [30]: register SPRN_PMC1 = 0x000000004000051e PMC1 count (0x280000546) above upper limit 0x2800003e8 (+0x15e) [FAIL] Test FAILED on line 52 failure: cycles ========== Signed-off-by: Desnes A. Nunes do Rosario <desnesn(a)linux.ibm.com> Tested-by: Sachin Sant <sachinp(a)linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> Link: https://lore.kernel.org/r/20200626164737.21943-1-desnesn@linux.ibm.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- .../selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c | 2 -- tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c | 2 -- .../selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c | 2 -- .../selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c | 2 -- tools/testing/selftests/powerpc/pmu/ebb/ebb.c | 2 -- .../selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c | 2 -- .../selftests/powerpc/pmu/ebb/lost_exception_test.c | 1 - .../testing/selftests/powerpc/pmu/ebb/multi_counter_test.c | 7 ------- .../selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c | 2 -- .../testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c | 2 -- .../selftests/powerpc/pmu/ebb/pmc56_overflow_test.c | 2 -- 11 files changed, 26 deletions(-) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c index 94110b1dcd3d8..031baa43646fb 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c @@ -91,8 +91,6 @@ int back_to_back_ebbs(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c index 7c57a8d79535d..361e0be9df9ae 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c @@ -42,8 +42,6 @@ int cycles(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c index ecf5ee3283a3e..fe7d0dc2a1a26 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c @@ -99,8 +99,6 @@ int cycles_with_freeze(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); printf("EBBs while frozen %d\n", ebbs_while_frozen); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c index c0faba520b35c..b9b30f974b5ea 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c @@ -71,8 +71,6 @@ int cycles_with_mmcr2(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c index 46681fec549b8..2694ae161a84a 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c @@ -396,8 +396,6 @@ int ebb_child(union pipe read_pipe, union pipe write_pipe) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c index a991d2ea8d0a1..174e4f4dae6c0 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c @@ -38,8 +38,6 @@ static int victim_child(union pipe read_pipe, union pipe write_pipe) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); FAIL_IF(ebb_state.stats.ebb_count == 0); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c index 2ed7ad33f7a3b..dddb95938304e 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c @@ -75,7 +75,6 @@ static int test_body(void) ebb_freeze_pmcs(); ebb_global_disable(); - count_pmc(4, sample_period); mtspr(SPRN_PMC4, 0xdead); dump_summary_ebb_state(); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c index 6ff8c8ff27d66..035c02273cd49 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c @@ -70,13 +70,6 @@ int multi_counter(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - count_pmc(2, sample_period); - count_pmc(3, sample_period); - count_pmc(4, sample_period); - count_pmc(5, sample_period); - count_pmc(6, sample_period); - dump_ebb_state(); for (i = 0; i < 6; i++) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c index 037cb6154f360..3e9d4ac965c85 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c @@ -61,8 +61,6 @@ static int cycles_child(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_summary_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c index c5fa64790c22e..d90891fe96a32 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c @@ -82,8 +82,6 @@ static int test_body(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); if (mmcr0_mismatch) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c index 30e1ac62e8cb4..8ca92b9ee5b01 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c @@ -76,8 +76,6 @@ int pmc56_overflow(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(2, sample_period); - dump_ebb_state(); printf("PMC5/6 overflow %d\n", pmc56_overflowed); -- 2.25.1

5 years, 1 month

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[PATCH AUTOSEL 5.4 25/48] selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

by Sasha Levin

From: "Desnes A. Nunes do Rosario" <desnesn(a)linux.ibm.com> [ Upstream commit 3337bf41e0dd70b4064cdf60acdfcdc2d050066c ] An extra count on ebb_state.stats.pmc_count[PMC_INDEX(pmc)] is being per- formed when count_pmc() is used to reset PMCs on a few selftests. This extra pmc_count can occasionally invalidate results, such as the ones from cycles_test shown hereafter. The ebb_check_count() failed with an above the upper limit error due to the extra value on ebb_state.stats.pmc_count. Furthermore, this extra count is also indicated by extra PMC1 trace_log on the output of the cycle test (as well as on pmc56_overflow_test): ========== ... [21]: counter = 8 [22]: register SPRN_MMCR0 = 0x0000000080000080 [23]: register SPRN_PMC1 = 0x0000000080000004 [24]: counter = 9 [25]: register SPRN_MMCR0 = 0x0000000080000080 [26]: register SPRN_PMC1 = 0x0000000080000004 [27]: counter = 10 [28]: register SPRN_MMCR0 = 0x0000000080000080 [29]: register SPRN_PMC1 = 0x0000000080000004 >> [30]: register SPRN_PMC1 = 0x000000004000051e PMC1 count (0x280000546) above upper limit 0x2800003e8 (+0x15e) [FAIL] Test FAILED on line 52 failure: cycles ========== Signed-off-by: Desnes A. Nunes do Rosario <desnesn(a)linux.ibm.com> Tested-by: Sachin Sant <sachinp(a)linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> Link: https://lore.kernel.org/r/20200626164737.21943-1-desnesn@linux.ibm.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- .../selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c | 2 -- tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c | 2 -- .../selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c | 2 -- .../selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c | 2 -- tools/testing/selftests/powerpc/pmu/ebb/ebb.c | 2 -- .../selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c | 2 -- .../selftests/powerpc/pmu/ebb/lost_exception_test.c | 1 - .../testing/selftests/powerpc/pmu/ebb/multi_counter_test.c | 7 ------- .../selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c | 2 -- .../testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c | 2 -- .../selftests/powerpc/pmu/ebb/pmc56_overflow_test.c | 2 -- 11 files changed, 26 deletions(-) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c index a2d7b0e3dca97..a26ac122c759f 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c @@ -91,8 +91,6 @@ int back_to_back_ebbs(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c index bc893813483ee..bb9f587fa76e8 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c @@ -42,8 +42,6 @@ int cycles(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c index dcd351d203289..9ae795ce314e6 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c @@ -99,8 +99,6 @@ int cycles_with_freeze(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); printf("EBBs while frozen %d\n", ebbs_while_frozen); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c index 94c99c12c0f23..4b45a2e70f62b 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c @@ -71,8 +71,6 @@ int cycles_with_mmcr2(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c index dfbc5c3ad52d7..21537d6eb6b7d 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c @@ -396,8 +396,6 @@ int ebb_child(union pipe read_pipe, union pipe write_pipe) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c index ca2f7d729155b..b208bf6ad58d3 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c @@ -38,8 +38,6 @@ static int victim_child(union pipe read_pipe, union pipe write_pipe) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); FAIL_IF(ebb_state.stats.ebb_count == 0); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c index ac3e6e182614a..ba2681a12cc7b 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c @@ -75,7 +75,6 @@ static int test_body(void) ebb_freeze_pmcs(); ebb_global_disable(); - count_pmc(4, sample_period); mtspr(SPRN_PMC4, 0xdead); dump_summary_ebb_state(); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c index b8242e9d97d2d..791d37ba327b5 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c @@ -70,13 +70,6 @@ int multi_counter(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - count_pmc(2, sample_period); - count_pmc(3, sample_period); - count_pmc(4, sample_period); - count_pmc(5, sample_period); - count_pmc(6, sample_period); - dump_ebb_state(); for (i = 0; i < 6; i++) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c index a05c0e18ded63..9b0f70d597020 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c @@ -61,8 +61,6 @@ static int cycles_child(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_summary_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c index 153ebc92234fd..2904c741e04e5 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c @@ -82,8 +82,6 @@ static int test_body(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); if (mmcr0_mismatch) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c index eadad75ed7e6f..b29f8ba22d1e6 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c @@ -76,8 +76,6 @@ int pmc56_overflow(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(2, sample_period); - dump_ebb_state(); printf("PMC5/6 overflow %d\n", pmc56_overflowed); -- 2.25.1

5 years, 1 month

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[PATCH AUTOSEL 5.7 33/61] selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

by Sasha Levin

From: "Desnes A. Nunes do Rosario" <desnesn(a)linux.ibm.com> [ Upstream commit 3337bf41e0dd70b4064cdf60acdfcdc2d050066c ] An extra count on ebb_state.stats.pmc_count[PMC_INDEX(pmc)] is being per- formed when count_pmc() is used to reset PMCs on a few selftests. This extra pmc_count can occasionally invalidate results, such as the ones from cycles_test shown hereafter. The ebb_check_count() failed with an above the upper limit error due to the extra value on ebb_state.stats.pmc_count. Furthermore, this extra count is also indicated by extra PMC1 trace_log on the output of the cycle test (as well as on pmc56_overflow_test): ========== ... [21]: counter = 8 [22]: register SPRN_MMCR0 = 0x0000000080000080 [23]: register SPRN_PMC1 = 0x0000000080000004 [24]: counter = 9 [25]: register SPRN_MMCR0 = 0x0000000080000080 [26]: register SPRN_PMC1 = 0x0000000080000004 [27]: counter = 10 [28]: register SPRN_MMCR0 = 0x0000000080000080 [29]: register SPRN_PMC1 = 0x0000000080000004 >> [30]: register SPRN_PMC1 = 0x000000004000051e PMC1 count (0x280000546) above upper limit 0x2800003e8 (+0x15e) [FAIL] Test FAILED on line 52 failure: cycles ========== Signed-off-by: Desnes A. Nunes do Rosario <desnesn(a)linux.ibm.com> Tested-by: Sachin Sant <sachinp(a)linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> Link: https://lore.kernel.org/r/20200626164737.21943-1-desnesn@linux.ibm.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- .../selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c | 2 -- tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c | 2 -- .../selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c | 2 -- .../selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c | 2 -- tools/testing/selftests/powerpc/pmu/ebb/ebb.c | 2 -- .../selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c | 2 -- .../selftests/powerpc/pmu/ebb/lost_exception_test.c | 1 - .../testing/selftests/powerpc/pmu/ebb/multi_counter_test.c | 7 ------- .../selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c | 2 -- .../testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c | 2 -- .../selftests/powerpc/pmu/ebb/pmc56_overflow_test.c | 2 -- 11 files changed, 26 deletions(-) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c index a2d7b0e3dca97..a26ac122c759f 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c @@ -91,8 +91,6 @@ int back_to_back_ebbs(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c index bc893813483ee..bb9f587fa76e8 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c @@ -42,8 +42,6 @@ int cycles(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c index dcd351d203289..9ae795ce314e6 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c @@ -99,8 +99,6 @@ int cycles_with_freeze(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); printf("EBBs while frozen %d\n", ebbs_while_frozen); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c index 94c99c12c0f23..4b45a2e70f62b 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c @@ -71,8 +71,6 @@ int cycles_with_mmcr2(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c index dfbc5c3ad52d7..21537d6eb6b7d 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c @@ -396,8 +396,6 @@ int ebb_child(union pipe read_pipe, union pipe write_pipe) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c index ca2f7d729155b..b208bf6ad58d3 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c @@ -38,8 +38,6 @@ static int victim_child(union pipe read_pipe, union pipe write_pipe) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); FAIL_IF(ebb_state.stats.ebb_count == 0); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c index ac3e6e182614a..ba2681a12cc7b 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c @@ -75,7 +75,6 @@ static int test_body(void) ebb_freeze_pmcs(); ebb_global_disable(); - count_pmc(4, sample_period); mtspr(SPRN_PMC4, 0xdead); dump_summary_ebb_state(); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c index b8242e9d97d2d..791d37ba327b5 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c @@ -70,13 +70,6 @@ int multi_counter(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - count_pmc(2, sample_period); - count_pmc(3, sample_period); - count_pmc(4, sample_period); - count_pmc(5, sample_period); - count_pmc(6, sample_period); - dump_ebb_state(); for (i = 0; i < 6; i++) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c index a05c0e18ded63..9b0f70d597020 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c @@ -61,8 +61,6 @@ static int cycles_child(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_summary_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c index 153ebc92234fd..2904c741e04e5 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c @@ -82,8 +82,6 @@ static int test_body(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); if (mmcr0_mismatch) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c index eadad75ed7e6f..b29f8ba22d1e6 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c @@ -76,8 +76,6 @@ int pmc56_overflow(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(2, sample_period); - dump_ebb_state(); printf("PMC5/6 overflow %d\n", pmc56_overflowed); -- 2.25.1

5 years, 1 month

1
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[PATCH AUTOSEL 5.8 33/62] selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

by Sasha Levin

From: "Desnes A. Nunes do Rosario" <desnesn(a)linux.ibm.com> [ Upstream commit 3337bf41e0dd70b4064cdf60acdfcdc2d050066c ] An extra count on ebb_state.stats.pmc_count[PMC_INDEX(pmc)] is being per- formed when count_pmc() is used to reset PMCs on a few selftests. This extra pmc_count can occasionally invalidate results, such as the ones from cycles_test shown hereafter. The ebb_check_count() failed with an above the upper limit error due to the extra value on ebb_state.stats.pmc_count. Furthermore, this extra count is also indicated by extra PMC1 trace_log on the output of the cycle test (as well as on pmc56_overflow_test): ========== ... [21]: counter = 8 [22]: register SPRN_MMCR0 = 0x0000000080000080 [23]: register SPRN_PMC1 = 0x0000000080000004 [24]: counter = 9 [25]: register SPRN_MMCR0 = 0x0000000080000080 [26]: register SPRN_PMC1 = 0x0000000080000004 [27]: counter = 10 [28]: register SPRN_MMCR0 = 0x0000000080000080 [29]: register SPRN_PMC1 = 0x0000000080000004 >> [30]: register SPRN_PMC1 = 0x000000004000051e PMC1 count (0x280000546) above upper limit 0x2800003e8 (+0x15e) [FAIL] Test FAILED on line 52 failure: cycles ========== Signed-off-by: Desnes A. Nunes do Rosario <desnesn(a)linux.ibm.com> Tested-by: Sachin Sant <sachinp(a)linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> Link: https://lore.kernel.org/r/20200626164737.21943-1-desnesn@linux.ibm.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- .../selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c | 2 -- tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c | 2 -- .../selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c | 2 -- .../selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c | 2 -- tools/testing/selftests/powerpc/pmu/ebb/ebb.c | 2 -- .../selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c | 2 -- .../selftests/powerpc/pmu/ebb/lost_exception_test.c | 1 - .../testing/selftests/powerpc/pmu/ebb/multi_counter_test.c | 7 ------- .../selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c | 2 -- .../testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c | 2 -- .../selftests/powerpc/pmu/ebb/pmc56_overflow_test.c | 2 -- 11 files changed, 26 deletions(-) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c index a2d7b0e3dca97..a26ac122c759f 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c @@ -91,8 +91,6 @@ int back_to_back_ebbs(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c index bc893813483ee..bb9f587fa76e8 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c @@ -42,8 +42,6 @@ int cycles(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c index dcd351d203289..9ae795ce314e6 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c @@ -99,8 +99,6 @@ int cycles_with_freeze(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); printf("EBBs while frozen %d\n", ebbs_while_frozen); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c index 94c99c12c0f23..4b45a2e70f62b 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c @@ -71,8 +71,6 @@ int cycles_with_mmcr2(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c index dfbc5c3ad52d7..21537d6eb6b7d 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c @@ -396,8 +396,6 @@ int ebb_child(union pipe read_pipe, union pipe write_pipe) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c index ca2f7d729155b..b208bf6ad58d3 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c @@ -38,8 +38,6 @@ static int victim_child(union pipe read_pipe, union pipe write_pipe) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); FAIL_IF(ebb_state.stats.ebb_count == 0); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c index ac3e6e182614a..ba2681a12cc7b 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c @@ -75,7 +75,6 @@ static int test_body(void) ebb_freeze_pmcs(); ebb_global_disable(); - count_pmc(4, sample_period); mtspr(SPRN_PMC4, 0xdead); dump_summary_ebb_state(); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c index b8242e9d97d2d..791d37ba327b5 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c @@ -70,13 +70,6 @@ int multi_counter(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - count_pmc(2, sample_period); - count_pmc(3, sample_period); - count_pmc(4, sample_period); - count_pmc(5, sample_period); - count_pmc(6, sample_period); - dump_ebb_state(); for (i = 0; i < 6; i++) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c index a05c0e18ded63..9b0f70d597020 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c @@ -61,8 +61,6 @@ static int cycles_child(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_summary_ebb_state(); event_close(&event); diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c index 153ebc92234fd..2904c741e04e5 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c @@ -82,8 +82,6 @@ static int test_body(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(1, sample_period); - dump_ebb_state(); if (mmcr0_mismatch) diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c index eadad75ed7e6f..b29f8ba22d1e6 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c @@ -76,8 +76,6 @@ int pmc56_overflow(void) ebb_global_disable(); ebb_freeze_pmcs(); - count_pmc(2, sample_period); - dump_ebb_state(); printf("PMC5/6 overflow %d\n", pmc56_overflowed); -- 2.25.1

5 years, 1 month

1
0
0 0

[PATCH bpf-next v3 6/6] selftests: bpf: test sockmap update from BPF

by Lorenz Bauer

Add a test which copies a socket from a sockmap into another sockmap or sockhash. This excercises bpf_map_update_elem support from BPF context. Compare the socket cookies from source and destination to ensure that the copy succeeded. Also check that the verifier rejects map_update from unsafe contexts. Signed-off-by: Lorenz Bauer <lmb(a)cloudflare.com> --- .../selftests/bpf/prog_tests/sockmap_basic.c | 78 +++++++++++++++++++ .../bpf/progs/test_sockmap_invalid_update.c | 23 ++++++ .../selftests/bpf/progs/test_sockmap_update.c | 48 ++++++++++++ 3 files changed, 149 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/test_sockmap_invalid_update.c create mode 100644 tools/testing/selftests/bpf/progs/test_sockmap_update.c diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c index 96e7b7f84c65..65ce7c289534 100644 --- a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c +++ b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c @@ -4,6 +4,8 @@ #include "test_progs.h" #include "test_skmsg_load_helpers.skel.h" +#include "test_sockmap_update.skel.h" +#include "test_sockmap_invalid_update.skel.h" #define TCP_REPAIR 19 /* TCP sock is under repair right now */ @@ -101,6 +103,76 @@ static void test_skmsg_helpers(enum bpf_map_type map_type) test_skmsg_load_helpers__destroy(skel); } +static void test_sockmap_update(enum bpf_map_type map_type) +{ + struct bpf_prog_test_run_attr tattr; + int err, prog, src, dst, duration = 0; + struct test_sockmap_update *skel; + __u64 src_cookie, dst_cookie; + const __u32 zero = 0; + char dummy[14] = {0}; + __s64 sk; + + sk = connected_socket_v4(); + if (CHECK(sk == -1, "connected_socket_v4", "cannot connect\n")) + return; + + skel = test_sockmap_update__open_and_load(); + if (CHECK(!skel, "open_and_load", "cannot load skeleton\n")) { + close(sk); + return; + } + + prog = bpf_program__fd(skel->progs.copy_sock_map); + src = bpf_map__fd(skel->maps.src); + if (map_type == BPF_MAP_TYPE_SOCKMAP) + dst = bpf_map__fd(skel->maps.dst_sock_map); + else + dst = bpf_map__fd(skel->maps.dst_sock_hash); + + err = bpf_map_update_elem(src, &zero, &sk, BPF_NOEXIST); + if (CHECK(err, "update_elem(src)", "errno=%u\n", errno)) + goto out; + + err = bpf_map_lookup_elem(src, &zero, &src_cookie); + if (CHECK(err, "lookup_elem(src, cookie)", "errno=%u\n", errno)) + goto out; + + tattr = (struct bpf_prog_test_run_attr){ + .prog_fd = prog, + .repeat = 1, + .data_in = dummy, + .data_size_in = sizeof(dummy), + }; + + err = bpf_prog_test_run_xattr(&tattr); + if (CHECK_ATTR(err || !tattr.retval, "bpf_prog_test_run", + "errno=%u retval=%u\n", errno, tattr.retval)) + goto out; + + err = bpf_map_lookup_elem(dst, &zero, &dst_cookie); + if (CHECK(err, "lookup_elem(dst, cookie)", "errno=%u\n", errno)) + goto out; + + CHECK(dst_cookie != src_cookie, "cookie mismatch", "%llu != %llu\n", + dst_cookie, src_cookie); + +out: + close(sk); + test_sockmap_update__destroy(skel); +} + +static void test_sockmap_invalid_update(void) +{ + struct test_sockmap_invalid_update *skel; + int duration = 0; + + skel = test_sockmap_invalid_update__open_and_load(); + CHECK(skel, "open_and_load", "verifier accepted map_update\n"); + if (skel) + test_sockmap_invalid_update__destroy(skel); +} + void test_sockmap_basic(void) { if (test__start_subtest("sockmap create_update_free")) @@ -111,4 +183,10 @@ void test_sockmap_basic(void) test_skmsg_helpers(BPF_MAP_TYPE_SOCKMAP); if (test__start_subtest("sockhash sk_msg load helpers")) test_skmsg_helpers(BPF_MAP_TYPE_SOCKHASH); + if (test__start_subtest("sockmap update")) + test_sockmap_update(BPF_MAP_TYPE_SOCKMAP); + if (test__start_subtest("sockhash update")) + test_sockmap_update(BPF_MAP_TYPE_SOCKHASH); + if (test__start_subtest("sockmap update in unsafe context")) + test_sockmap_invalid_update(); } diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_invalid_update.c b/tools/testing/selftests/bpf/progs/test_sockmap_invalid_update.c new file mode 100644 index 000000000000..02a59e220cbc --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_sockmap_invalid_update.c @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2020 Cloudflare +#include "vmlinux.h" +#include <bpf/bpf_helpers.h> + +struct { + __uint(type, BPF_MAP_TYPE_SOCKMAP); + __uint(max_entries, 1); + __type(key, __u32); + __type(value, __u64); +} map SEC(".maps"); + +SEC("sockops") +int bpf_sockmap(struct bpf_sock_ops *skops) +{ + __u32 key = 0; + + if (skops->sk) + bpf_map_update_elem(&map, &key, skops->sk, 0); + return 0; +} + +char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_update.c b/tools/testing/selftests/bpf/progs/test_sockmap_update.c new file mode 100644 index 000000000000..9d0c9f28cab2 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_sockmap_update.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2020 Cloudflare +#include "vmlinux.h" +#include <bpf/bpf_helpers.h> + +struct { + __uint(type, BPF_MAP_TYPE_SOCKMAP); + __uint(max_entries, 1); + __type(key, __u32); + __type(value, __u64); +} src SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_SOCKMAP); + __uint(max_entries, 1); + __type(key, __u32); + __type(value, __u64); +} dst_sock_map SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_SOCKHASH); + __uint(max_entries, 1); + __type(key, __u32); + __type(value, __u64); +} dst_sock_hash SEC(".maps"); + +SEC("classifier/copy_sock_map") +int copy_sock_map(void *ctx) +{ + struct bpf_sock *sk; + bool failed = false; + __u32 key = 0; + + sk = bpf_map_lookup_elem(&src, &key); + if (!sk) + return SK_DROP; + + if (bpf_map_update_elem(&dst_sock_map, &key, sk, 0)) + failed = true; + + if (bpf_map_update_elem(&dst_sock_hash, &key, sk, 0)) + failed = true; + + bpf_sk_release(sk); + return failed ? SK_DROP : SK_PASS; +} + +char _license[] SEC("license") = "GPL"; -- 2.25.1

5 years, 1 month

2
1
0 0

[PATCH] mm/gup_benchmark: update the documentation in Kconfig

by Barry Song

In the beginning, mm/gup_benchmark.c supported get_user_pages_fast() only, but right now, it supports the benchmarking of a couple of get_user_pages() related calls like: * get_user_pages_fast() * get_user_pages() * pin_user_pages_fast() * pin_user_pages() The documentation is confusing and needs update. Cc: John Hubbard <jhubbard(a)nvidia.com> Cc: Keith Busch <keith.busch(a)intel.com> Cc: Ira Weiny <ira.weiny(a)intel.com> Cc: Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com> Signed-off-by: Barry Song <song.bao.hua(a)hisilicon.com> --- mm/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/Kconfig b/mm/Kconfig index 6c974888f86f..f7c9374da7b3 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -831,10 +831,10 @@ config PERCPU_STATS be used to help understand percpu memory usage. config GUP_BENCHMARK - bool "Enable infrastructure for get_user_pages_fast() benchmarking" + bool "Enable infrastructure for get_user_pages() and related calls benchmarking" help Provides /sys/kernel/debug/gup_benchmark that helps with testing - performance of get_user_pages_fast(). + performance of get_user_pages() and related calls. See tools/testing/selftests/vm/gup_benchmark.c -- 2.27.0

5 years, 1 month

3
2
0 0

[RFC PATCH bpf-next 0/4] bpf: add bpf-based bpf_trace_printk()-like support

by Alan Maguire

This series attempts to provide a simple way for BPF programs (and in future other consumers) to utilize BPF Type Format (BTF) information to display kernel data structures in-kernel. The use case this functionality is applied to here is to support a bpf_trace_printk trace event-based method of rendering type information. There is already support in kernel/bpf/btf.c for "show" functionality; the changes here generalize that support from seq-file specific verifier display to the more generic case and add another specific use case; rather than seq_printf()ing the show data, it is traced using the bpf_trace_printk trace event. Other future uses of the show functionality could include a bpf_printk_btf() function which printk()ed the data instead. Oops messaging in particular would be an interesting application for such functionality. The above potential use case hints at a potential reply to a reasonable objection that such typed display should be solved by tracing programs, where the in-kernel tracing records data and the userspace program prints it out. While this is certainly the recommended approach for most cases, I believe having an in-kernel mechanism would be valuable also. Critically in BPF programs it greatly simplifies debugging and tracing of such data to invoking a one-line helper. One challenge raised in an earlier iteration of this work - where the BTF printing was implemented as a printk() format specifier - was that the amount of data printed per printk() was large, and other format specifiers were far simpler. This patchset tackles this by instead displaying data _as the data structure is traversed_, rathern than copying it to a string for later display. The problem in doing this however is that such output can be intermixed with other bpf_trace_printk events. The solution pursued here is to associate a trace ID with the bpf_trace_printk events. For now, the bpf_trace_printk() helper sets this trace ID to 0, and bpf_trace_btf() can specify non-zero values. This allows a BPF program to coordinate with a user-space program which creates a separate trace instance which filters trace events based on trace ID, allowing for clean display without pollution from other data sources. Future work could enhance bpf_trace_printk() to do this too, either via a new helper or by smuggling a 32-bit trace id value into the "fmt_size" argument (the latter might be problematic for 32-bit platforms though, so a new helper might be preferred). To aid in display the bpf_trace_btf() helper is passed a "struct btf_ptr *" which specifies the data to be traced (struct sk_buff * say), the BTF id of the type (the BTF id of "struct sk_buff") or a string representation of the type ("struct sk_buff"). A flags field is also present for future use. Separately a number of flags control how the output is rendered, see patch 3 for more details. A snippet of output from printing "struct sk_buff *" (see patch 3 for the full output) looks like this: <idle>-0 [023] d.s. 1825.778400: bpf_trace_printk: (struct sk_buff){ <idle>-0 [023] d.s. 1825.778409: bpf_trace_printk: (union){ <idle>-0 [023] d.s. 1825.778410: bpf_trace_printk: (struct){ <idle>-0 [023] d.s. 1825.778412: bpf_trace_printk: .prev = (struct sk_buff *)0x00000000b2a3df7e, <idle>-0 [023] d.s. 1825.778413: bpf_trace_printk: (union){ <idle>-0 [023] d.s. 1825.778414: bpf_trace_printk: .dev = (struct net_device *)0x000000001658808b, <idle>-0 [023] d.s. 1825.778416: bpf_trace_printk: .dev_scratch = (long unsigned int)18446628460391432192, <idle>-0 [023] d.s. 1825.778417: bpf_trace_printk: }, <idle>-0 [023] d.s. 1825.778417: bpf_trace_printk: }, <idle>-0 [023] d.s. 1825.778418: bpf_trace_printk: .rbnode = (struct rb_node){ <idle>-0 [023] d.s. 1825.778419: bpf_trace_printk: .rb_right = (struct rb_node *)0x00000000b2a3df7e, <idle>-0 [023] d.s. 1825.778420: bpf_trace_printk: .rb_left = (struct rb_node *)0x000000001658808b, <idle>-0 [023] d.s. 1825.778420: bpf_trace_printk: }, <idle>-0 [023] d.s. 1825.778421: bpf_trace_printk: .list = (struct list_head){ <idle>-0 [023] d.s. 1825.778422: bpf_trace_printk: .prev = (struct list_head *)0x00000000b2a3df7e, <idle>-0 [023] d.s. 1825.778422: bpf_trace_printk: }, <idle>-0 [023] d.s. 1825.778422: bpf_trace_printk: }, <idle>-0 [023] d.s. 1825.778426: bpf_trace_printk: .len = (unsigned int)168, <idle>-0 [023] d.s. 1825.778427: bpf_trace_printk: .mac_len = (__u16)14, Changes since v3: - Moved to RFC since the approach is different (and bpf-next is closed) - Rather than using a printk() format specifier as the means of invoking BTF-enabled display, a dedicated BPF helper is used. This solves the issue of printk() having to output large amounts of data using a complex mechanism such as BTF traversal, but still provides a way for the display of such data to be achieved via BPF programs. Future work could include a bpf_printk_btf() function to invoke display via printk() where the elements of a data structure are printk()ed one at a time. Thanks to Petr Mladek, Andy Shevchenko and Rasmus Villemoes who took time to look at the earlier printk() format-specifier-focused version of this and provided feedback clarifying the problems with that approach. - Added trace id to the bpf_trace_printk events as a means of separating output from standard bpf_trace_printk() events, ensuring it can be easily parsed by the reader. - Added bpf_trace_btf() helper tests which do simple verification of the various display options. Changes since v2: - Alexei and Yonghong suggested it would be good to use probe_kernel_read() on to-be-shown data to ensure safety during operation. Safe copy via probe_kernel_read() to a buffer object in "struct btf_show" is used to support this. A few different approaches were explored including dynamic allocation and per-cpu buffers. The downside of dynamic allocation is that it would be done during BPF program execution for bpf_trace_printk()s using %pT format specifiers. The problem with per-cpu buffers is we'd have to manage preemption and since the display of an object occurs over an extended period and in printk context where we'd rather not change preemption status, it seemed tricky to manage buffer safety while considering preemption. The approach of utilizing stack buffer space via the "struct btf_show" seemed like the simplest approach. The stack size of the associated functions which have a "struct btf_show" on their stack to support show operation (btf_type_snprintf_show() and btf_type_seq_show()) stays under 500 bytes. The compromise here is the safe buffer we use is small - 256 bytes - and as a result multiple probe_kernel_read()s are needed for larger objects. Most objects of interest are smaller than this (e.g. "struct sk_buff" is 224 bytes), and while task_struct is a notable exception at ~8K, performance is not the priority for BTF-based display. (Alexei and Yonghong, patch 2). - safe buffer use is the default behaviour (and is mandatory for BPF) but unsafe display - meaning no safe copy is done and we operate on the object itself - is supported via a 'u' option. - pointers are prefixed with 0x for clarity (Alexei, patch 2) - added additional comments and explanations around BTF show code, especially around determining whether objects such zeroed. Also tried to comment safe object scheme used. (Yonghong, patch 2) - added late_initcall() to initialize vmlinux BTF so that it would not have to be initialized during printk operation (Alexei, patch 5) - removed CONFIG_BTF_PRINTF config option as it is not needed; CONFIG_DEBUG_INFO_BTF can be used to gate test behaviour and determining behaviour of type-based printk can be done via retrieval of BTF data; if it's not there BTF was unavailable or broken (Alexei, patches 4,6) - fix bpf_trace_printk test to use vmlinux.h and globals via skeleton infrastructure, removing need for perf events (Andrii, patch 8) Changes since v1: - changed format to be more drgn-like, rendering indented type info along with type names by default (Alexei) - zeroed values are omitted (Arnaldo) by default unless the '0' modifier is specified (Alexei) - added an option to print pointer values without obfuscation. The reason to do this is the sysctls controlling pointer display are likely to be irrelevant in many if not most tracing contexts. Some questions on this in the outstanding questions section below... - reworked printk format specifer so that we no longer rely on format %pT<type> but instead use a struct * which contains type information (Rasmus). This simplifies the printk parsing, makes use more dynamic and also allows specification by BTF id as well as name. - removed incorrect patch which tried to fix dereferencing of resolved BTF info for vmlinux; instead we skip modifiers for the relevant case (array element type determination) (Alexei). - fixed issues with negative snprintf format length (Rasmus) - added test cases for various data structure formats; base types, typedefs, structs, etc. - tests now iterate through all typedef, enum, struct and unions defined for vmlinux BTF and render a version of the target dummy value which is either all zeros or all 0xff values; the idea is this exercises the "skip if zero" and "print everything" cases. - added support in BPF for using the %pT format specifier in bpf_trace_printk() - added BPF tests which ensure %pT format specifier use works (Alexei). Alan Maguire (4): bpf: provide function to get vmlinux BTF information bpf: make BTF show support generic, apply to seq files/bpf_trace_printk bpf: add bpf_trace_btf helper selftests/bpf: add bpf_trace_btf helper tests include/linux/bpf.h | 5 + include/linux/btf.h | 38 + include/uapi/linux/bpf.h | 63 ++ kernel/bpf/btf.c | 962 ++++++++++++++++++--- kernel/bpf/core.c | 5 + kernel/bpf/helpers.c | 4 + kernel/bpf/verifier.c | 18 +- kernel/trace/bpf_trace.c | 121 ++- kernel/trace/bpf_trace.h | 6 +- scripts/bpf_helpers_doc.py | 2 + tools/include/uapi/linux/bpf.h | 63 ++ tools/testing/selftests/bpf/prog_tests/trace_btf.c | 45 + .../selftests/bpf/progs/netif_receive_skb.c | 43 + 13 files changed, 1257 insertions(+), 118 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/trace_btf.c create mode 100644 tools/testing/selftests/bpf/progs/netif_receive_skb.c -- 1.8.3.1

5 years, 1 month

3
10
0 0

[PATCH 1/2] kunit: expect failures from dynamic analysis tools

by Uriel Guajardo

Adds support to KUnit for failure expectation for specific tools. Uses named KUnit resources to keep track of whether or not a failure expectation has been set by the user. - Adds a generic KUNIT_EXPECT_TOOL_FAIL macro that can expect failure from any supported tool that uses the same identifying name - Adds kunit_fail_from_tool which is used to flag failures for specific tools. Requires "kunit: suppport failure from dynamic analysis tools": https://lore.kernel.org/linux-kselftest/20200813205722.1384108-1-urielguaja… Signed-off-by: Uriel Guajardo <urielguajardo(a)google.com> --- include/kunit/test-bug.h | 53 ++++++++++++++++++++++++++++++++++++++++ include/kunit/test.h | 5 ++++ lib/kunit/test.c | 46 +++++++++++++++++++++++++++++----- 3 files changed, 98 insertions(+), 6 deletions(-) diff --git a/include/kunit/test-bug.h b/include/kunit/test-bug.h index 283c19ec328f..383198f70cb5 100644 --- a/include/kunit/test-bug.h +++ b/include/kunit/test-bug.h @@ -9,16 +9,69 @@ #ifndef _KUNIT_TEST_BUG_H #define _KUNIT_TEST_BUG_H +/** + * struct kunit_expectation - represents expectations in KUnit, specifically + * used to keep track of failure expectations from analysis tools + */ +struct kunit_expectation { + bool expected; + bool found; +}; + #if IS_ENABLED(CONFIG_KUNIT) extern void kunit_fail_current_test(void); +/** + * kunit_fail_from_tool() - Fails the currently running KUnit tests under the + * given tool name. + * + * Note: Uses a named KUnit resource to track state. Do not use the name + * KUNIT_TOOL_{tool} for KUnit resources outside of here. + */ +#define kunit_fail_from_tool(tool) \ + if (current->kunit_test) \ + kunit_tool_fail(current->kunit_test, #tool,\ + "KUNIT_TOOL_" #tool) + +/** + * kunit_tool_expectation() - Returns the kunit_expectation for the given + * tool. If it cannot find the expectation, it creates an expectation and + * returns it. + * + * Note: Uses a named KUnit resource to track state. Do not use the name + * KUNIT_TOOL_{tool} for KUnit resources outside of here. + */ +#define kunit_tool_expectation(test, tool) \ + kunit_find_expectation(test, "KUNIT_TOOL_" #tool) + + +/** + * KUNIT_EXPECT_TOOL_FAIL() - Fails the currently running KUnit test if the + * condition does not cause an error within the given tool. + * + * Note: 'tool' must be consistent with the name specified in + * kunit_fail_from_tool(). If the tool fails KUnit using another name, KUnit + * will treat it as a separate tool. + */ +#define KUNIT_EXPECT_TOOL_FAIL(test, condition, tool) do { \ + struct kunit_expectation *data = kunit_tool_expectation(test, tool);\ + data->expected = true; \ + data->found = false; \ + condition; \ + KUNIT_EXPECT_EQ(test, data->expected, data->found); \ + data->expected = false; \ + data->found = false; \ +} while (0) + #else static inline void kunit_fail_current_test(void) { } +#define kunit_fail_from_tool(tool) do { } while (0) + #endif #endif /* _KUNIT_TEST_BUG_H */ diff --git a/include/kunit/test.h b/include/kunit/test.h index 81bf43a1abda..3da8e17ee32b 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -511,6 +511,11 @@ static inline int kunit_destroy_named_resource(struct kunit *test, */ void kunit_remove_resource(struct kunit *test, struct kunit_resource *res); +void kunit_tool_fail(struct kunit *test, char *tool_name, char *resource_name); + +struct kunit_expectation *kunit_find_expectation(struct kunit *test, + char *resource_name); + /** * kunit_kmalloc() - Like kmalloc() except the allocation is *test managed*. * @test: The test context object. diff --git a/lib/kunit/test.c b/lib/kunit/test.c index d8189d827368..458d1ad2daf2 100644 --- a/lib/kunit/test.c +++ b/lib/kunit/test.c @@ -22,6 +22,45 @@ void kunit_fail_current_test(void) kunit_set_failure(current->kunit_test); } +static void kunit_data_free(struct kunit_resource *res) +{ + kfree(res->data); +} + +struct kunit_expectation *kunit_find_expectation(struct kunit *test, + char *resource_name) +{ + struct kunit_resource *resource; + struct kunit_expectation *expectation; + + struct kunit_resource *existing = kunit_find_named_resource( + test, resource_name); + if (!existing) { + expectation = kzalloc(sizeof(*expectation), GFP_KERNEL); + resource = kunit_alloc_and_get_resource(test, NULL, + kunit_data_free, GFP_KERNEL, + expectation); + resource->name = resource_name; + kunit_put_resource(resource); + return expectation; + } + kunit_put_resource(existing); + return existing->data; +} +EXPORT_SYMBOL_GPL(kunit_find_expectation); + +void kunit_tool_fail(struct kunit *test, char *tool_name, char *resource_name) +{ + struct kunit_expectation *data = kunit_find_expectation(test, + resource_name); + if (!data->expected) { + kunit_warn(test, "Dynamic analysis tool failure from %s", + tool_name); + return kunit_fail_current_test(); + } + data->found = true; +} + static void kunit_print_tap_version(void) { static bool kunit_has_printed_tap_version; @@ -538,11 +577,6 @@ static int kunit_kmalloc_init(struct kunit_resource *res, void *context) return 0; } -static void kunit_kmalloc_free(struct kunit_resource *res) -{ - kfree(res->data); -} - void *kunit_kmalloc(struct kunit *test, size_t size, gfp_t gfp) { struct kunit_kmalloc_params params = { @@ -552,7 +586,7 @@ void *kunit_kmalloc(struct kunit *test, size_t size, gfp_t gfp) return kunit_alloc_resource(test, kunit_kmalloc_init, - kunit_kmalloc_free, + kunit_data_free, gfp, &params); } -- 2.28.0.297.g1956fa8f8d-goog

5 years, 1 month

1
1
0 0

[PATCH] kunit: Customize KUNIT_EXCEPT/KUNIT_ASSERT Expected messages

by Vitor Massaru Iha

In some cases, to maintain the consistency of the Expected messages with the original runtime test, it is necessary to customize the Expected messages on KUnit. As an example test_overflow conversion to KUnit (I added 1, p->s_of+1, just to fail the test). Using KUNIT_EXPECT_EQ: Expected _of == p->s_of+1, but _of == 0 p->s_of+1 == 1 not ok 1 - overflow_calculation_test ok 2 - overflow_shift_test Using KUNIT_EXPECT_EQ_CUSTOM_MSG: Expected 0 + 0 to not overflow (type u8) not ok 1 - overflow_calculation_test Which is more similar to the error message of the original test. Signed-off-by: Vitor Massaru Iha <vitor(a)massaru.org> --- include/kunit/assert.h | 8 ++- include/kunit/test.h | 151 +++++++++++++++++++++++++++++++++++++++-- lib/kunit/assert.c | 34 ++++++---- 3 files changed, 172 insertions(+), 21 deletions(-) diff --git a/include/kunit/assert.h b/include/kunit/assert.h index ad889b539ab3..b3c25b4420c8 100644 --- a/include/kunit/assert.h +++ b/include/kunit/assert.h @@ -204,6 +204,7 @@ struct kunit_binary_assert { long long left_value; const char *right_text; long long right_value; + bool custom_msg; }; void kunit_binary_assert_format(const struct kunit_assert *assert, @@ -219,6 +220,7 @@ void kunit_binary_assert_format(const struct kunit_assert *assert, * @left_val: The actual evaluated value of the expression in the left slot. * @right_str: A string representation of the expression in the right slot. * @right_val: The actual evaluated value of the expression in the right slot. + * @custom_msg_bool: Show a custom expect message instead the default message. * * Initializes a &struct kunit_binary_assert. Intended to be used in * KUNIT_EXPECT_* and KUNIT_ASSERT_* macros. @@ -229,7 +231,8 @@ void kunit_binary_assert_format(const struct kunit_assert *assert, left_str, \ left_val, \ right_str, \ - right_val) { \ + right_val, \ + custom_msg_bool) { \ .assert = KUNIT_INIT_ASSERT_STRUCT(test, \ type, \ kunit_binary_assert_format), \ @@ -237,7 +240,8 @@ void kunit_binary_assert_format(const struct kunit_assert *assert, .left_text = left_str, \ .left_value = left_val, \ .right_text = right_str, \ - .right_value = right_val \ + .right_value = right_val, \ + .custom_msg = custom_msg_bool, \ } /** diff --git a/include/kunit/test.h b/include/kunit/test.h index 59f3144f009a..ec821a57ec5b 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -699,6 +699,7 @@ void kunit_do_assertion(struct kunit *test, left, \ op, \ right, \ + custom_msg_bool, \ fmt, \ ...) \ do { \ @@ -715,7 +716,8 @@ do { \ #left, \ __left, \ #right, \ - __right), \ + __right, \ + custom_msg_bool), \ fmt, \ ##__VA_ARGS__); \ } while (0) @@ -726,6 +728,7 @@ do { \ assert_type, \ left, \ right, \ + custom_msg_bool, \ fmt, \ ...) \ KUNIT_BASE_BINARY_ASSERTION(test, \ @@ -733,6 +736,7 @@ do { \ ASSERT_CLASS_INIT, \ assert_type, \ left, ==, right, \ + custom_msg_bool, \ fmt, \ ##__VA_ARGS__) @@ -742,6 +746,7 @@ do { \ assert_type, \ left, \ right, \ + custom_msg_bool, \ fmt, \ ...) \ KUNIT_BASE_BINARY_ASSERTION(test, \ @@ -749,6 +754,7 @@ do { \ ASSERT_CLASS_INIT, \ assert_type, \ left, !=, right, \ + custom_msg_bool, \ fmt, \ ##__VA_ARGS__) @@ -765,6 +771,7 @@ do { \ ASSERT_CLASS_INIT, \ assert_type, \ left, <, right, \ + custom_msg_bool, \ fmt, \ ##__VA_ARGS__) @@ -774,6 +781,7 @@ do { \ assert_type, \ left, \ right, \ + custom_msg_bool, \ fmt, \ ...) \ KUNIT_BASE_BINARY_ASSERTION(test, \ @@ -781,6 +789,7 @@ do { \ ASSERT_CLASS_INIT, \ assert_type, \ left, <=, right, \ + custom_msg_bool, \ fmt, \ ##__VA_ARGS__) @@ -797,6 +806,7 @@ do { \ ASSERT_CLASS_INIT, \ assert_type, \ left, >, right, \ + custom_msg_bool, \ fmt, \ ##__VA_ARGS__) @@ -813,16 +823,23 @@ do { \ ASSERT_CLASS_INIT, \ assert_type, \ left, >=, right, \ + custom_msg_bool, \ fmt, \ ##__VA_ARGS__) -#define KUNIT_BINARY_EQ_MSG_ASSERTION(test, assert_type, left, right, fmt, ...)\ +#define KUNIT_BINARY_EQ_MSG_ASSERTION(test, \ + assert_type, \ + left, right, \ + custom_msg_bool, \ + fmt, \ + ...) \ KUNIT_BASE_EQ_MSG_ASSERTION(test, \ kunit_binary_assert, \ KUNIT_INIT_BINARY_ASSERT_STRUCT, \ assert_type, \ left, \ right, \ + custom_msg_bool, \ fmt, \ ##__VA_ARGS__) @@ -831,6 +848,7 @@ do { \ assert_type, \ left, \ right, \ + false, \ NULL) #define KUNIT_BINARY_PTR_EQ_MSG_ASSERTION(test, \ @@ -862,6 +880,18 @@ do { \ assert_type, \ left, \ right, \ + false, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_BINARY_NE_CUSTOM_MSG_ASSERTION(test, assert_type, left, right, fmt, ...)\ + KUNIT_BASE_NE_MSG_ASSERTION(test, \ + kunit_binary_assert, \ + KUNIT_INIT_BINARY_ASSERT_STRUCT, \ + assert_type, \ + left, \ + right, \ + true, \ fmt, \ ##__VA_ARGS__) @@ -870,6 +900,7 @@ do { \ assert_type, \ left, \ right, \ + false, \ NULL) #define KUNIT_BINARY_PTR_NE_MSG_ASSERTION(test, \ @@ -904,11 +935,12 @@ do { \ fmt, \ ##__VA_ARGS__) -#define KUNIT_BINARY_LT_ASSERTION(test, assert_type, left, right) \ +#define KUNIT_BINARY_LT_ASSERTION(test, assert_type, left, right, custom_msg_bool)\ KUNIT_BINARY_LT_MSG_ASSERTION(test, \ assert_type, \ left, \ right, \ + custom_msg_bool, \ NULL) #define KUNIT_BINARY_PTR_LT_MSG_ASSERTION(test, \ @@ -923,6 +955,7 @@ do { \ assert_type, \ left, \ right, \ + false, \ fmt, \ ##__VA_ARGS__) @@ -933,13 +966,20 @@ do { \ right, \ NULL) -#define KUNIT_BINARY_LE_MSG_ASSERTION(test, assert_type, left, right, fmt, ...)\ +#define KUNIT_BINARY_LE_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + custom_msg_bool, \ + fmt, \ + ...) \ KUNIT_BASE_LE_MSG_ASSERTION(test, \ kunit_binary_assert, \ KUNIT_INIT_BINARY_ASSERT_STRUCT, \ assert_type, \ left, \ right, \ + custom_msg_bool, \ fmt, \ ##__VA_ARGS__) @@ -948,6 +988,7 @@ do { \ assert_type, \ left, \ right, \ + false, \ NULL) #define KUNIT_BINARY_PTR_LE_MSG_ASSERTION(test, \ @@ -972,13 +1013,20 @@ do { \ right, \ NULL) -#define KUNIT_BINARY_GT_MSG_ASSERTION(test, assert_type, left, right, fmt, ...)\ +#define KUNIT_BINARY_GT_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + custom_msg_bool, \ + fmt, \ + ...) \ KUNIT_BASE_GT_MSG_ASSERTION(test, \ kunit_binary_assert, \ KUNIT_INIT_BINARY_ASSERT_STRUCT, \ assert_type, \ left, \ right, \ + custom_msg_bool, \ fmt, \ ##__VA_ARGS__) @@ -1001,6 +1049,7 @@ do { \ assert_type, \ left, \ right, \ + custom_msg_bool, \ fmt, \ ##__VA_ARGS__) @@ -1011,7 +1060,13 @@ do { \ right, \ NULL) -#define KUNIT_BINARY_GE_MSG_ASSERTION(test, assert_type, left, right, fmt, ...)\ +#define KUNIT_BINARY_GE_MSG_ASSERTION(test, \ + assert_type, \ + left, \ + right, \ + custom_msg_bool, \ + fmt, \ + ...) \ KUNIT_BASE_GE_MSG_ASSERTION(test, \ kunit_binary_assert, \ KUNIT_INIT_BINARY_ASSERT_STRUCT, \ @@ -1026,12 +1081,14 @@ do { \ assert_type, \ left, \ right, \ + false, \ NULL) #define KUNIT_BINARY_PTR_GE_MSG_ASSERTION(test, \ assert_type, \ left, \ right, \ + custom_msg_bool, \ fmt, \ ...) \ KUNIT_BASE_GE_MSG_ASSERTION(test, \ @@ -1040,6 +1097,7 @@ do { \ assert_type, \ left, \ right, \ + custom_msg_bool, \ fmt, \ ##__VA_ARGS__) @@ -1197,6 +1255,16 @@ do { \ KUNIT_EXPECTATION, \ left, \ right, \ + false, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_EXPECT_EQ_CUSTOM_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_EQ_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right, \ + true, \ fmt, \ ##__VA_ARGS__) @@ -1222,9 +1290,18 @@ do { \ KUNIT_EXPECTATION, \ left, \ right, \ + false, \ fmt, \ ##__VA_ARGS__) +#define KUNIT_EXPECT_PTR_EQ_CUSTOM_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_PTR_EQ_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right, \ + true, \ + fmt, \ + ##__VA_ARGS__) /** * KUNIT_EXPECT_NE() - An expectation that @left and @right are not equal. * @test: The test context object. @@ -1244,6 +1321,16 @@ do { \ KUNIT_EXPECTATION, \ left, \ right, \ + false, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_EXPECT_NE_CUSTOM_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_NE_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right, \ + true, \ fmt, \ ##__VA_ARGS__) @@ -1269,6 +1356,7 @@ do { \ KUNIT_EXPECTATION, \ left, \ right, \ + false, \ fmt, \ ##__VA_ARGS__) @@ -1313,6 +1401,16 @@ do { \ KUNIT_EXPECTATION, \ left, \ right, \ + false, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_EXPECT_LE_CUSTOM_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_LE_MSG_ASSERTION(test, \ + KUNIT_EXPECTATION, \ + left, \ + right, \ + true, \ fmt, \ ##__VA_ARGS__) @@ -1467,6 +1565,8 @@ do { \ fmt, \ ##__VA_ARGS__) +//#define KUNIT_ASSERT_EQ_TYPE(test, ) + /** * KUNIT_ASSERT_EQ() - Sets an assertion that @left and @right are equal. * @test: The test context object. @@ -1485,6 +1585,16 @@ do { \ KUNIT_ASSERTION, \ left, \ right, \ + false, \ + fmt, \ + ##__VA_ARGS__) + +#define KUNIT_ASSERT_EQ_CUSTOM_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_EQ_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + left, \ + right, \ + true, \ fmt, \ ##__VA_ARGS__) @@ -1506,9 +1616,18 @@ do { \ KUNIT_ASSERTION, \ left, \ right, \ + false, \ fmt, \ ##__VA_ARGS__) +#define KUNIT_ASSERT_PTR_EQ_CUSTOM_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_PTR_EQ_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + left, \ + right, \ + true, \ + fmt, \ + ##__VA_ARGS__) /** * KUNIT_ASSERT_NE() - An assertion that @left and @right are not equal. * @test: The test context object. @@ -1527,6 +1646,7 @@ do { \ KUNIT_ASSERTION, \ left, \ right, \ + false, \ fmt, \ ##__VA_ARGS__) @@ -1549,6 +1669,7 @@ do { \ KUNIT_ASSERTION, \ left, \ right, \ + false, \ fmt, \ ##__VA_ARGS__) /** @@ -1594,6 +1715,15 @@ do { \ fmt, \ ##__VA_ARGS__) +#define KUNIT_ASSERT_LE_CUSTOM_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_LE_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + left, \ + right, \ + true, \ + fmt, \ + ##__VA_ARGS__) + /** * KUNIT_ASSERT_GT() - An assertion that @left is greater than @right. * @test: The test context object. @@ -1638,6 +1768,15 @@ do { \ fmt, \ ##__VA_ARGS__) +#define KUNIT_ASSERT_GE_CUSTOM_MSG(test, left, right, fmt, ...) \ + KUNIT_BINARY_GE_MSG_ASSERTION(test, \ + KUNIT_ASSERTION, \ + left, \ + right, \ + true, \ + fmt, \ + ##__VA_ARGS__) + /** * KUNIT_ASSERT_STREQ() - An assertion that strings @left and @right are equal. * @test: The test context object. diff --git a/lib/kunit/assert.c b/lib/kunit/assert.c index 33acdaa28a7d..202f9fdeed0e 100644 --- a/lib/kunit/assert.c +++ b/lib/kunit/assert.c @@ -32,8 +32,14 @@ EXPORT_SYMBOL_GPL(kunit_base_assert_format); void kunit_assert_print_msg(const struct kunit_assert *assert, struct string_stream *stream) { - if (assert->message.fmt) - string_stream_add(stream, "\n%pV", &assert->message); + struct kunit_binary_assert *binary_assert = container_of( + assert, struct kunit_binary_assert, assert); + if (assert->message.fmt) { + if (binary_assert->custom_msg == false) + string_stream_add(stream, "\n" KUNIT_SUBSUBTEST_INDENT "%pV", &assert->message); + else + string_stream_add(stream, KUNIT_SUBTEST_INDENT "%pV", &assert->message); + } } EXPORT_SYMBOL_GPL(kunit_assert_print_msg); @@ -92,17 +98,19 @@ void kunit_binary_assert_format(const struct kunit_assert *assert, assert, struct kunit_binary_assert, assert); kunit_base_assert_format(assert, stream); - string_stream_add(stream, - KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n", - binary_assert->left_text, - binary_assert->operation, - binary_assert->right_text); - string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %lld\n", - binary_assert->left_text, - binary_assert->left_value); - string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %lld", - binary_assert->right_text, - binary_assert->right_value); + if (binary_assert->custom_msg == false) { + string_stream_add(stream, + KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n", + binary_assert->left_text, + binary_assert->operation, + binary_assert->right_text); + string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %lld\n", + binary_assert->left_text, + binary_assert->left_value); + string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %lld", + binary_assert->right_text, + binary_assert->right_value); + } kunit_assert_print_msg(assert, stream); } EXPORT_SYMBOL_GPL(kunit_binary_assert_format); base-commit: d43c7fb05765152d4d4a39a8ef957c4ea14d8847 -- 2.26.2

5 years, 1 month

2
2
0 0

[PATCH bpf-next 6/6] selftests: bpf: test sockmap update from BPF

by Lorenz Bauer

Add a test which copies a socket from a sockmap into another sockmap or sockhash. This excercises bpf_map_update_elem support from BPF context. Compare the socket cookies from source and destination to ensure that the copy succeeded. Signed-off-by: Lorenz Bauer <lmb(a)cloudflare.com> --- .../selftests/bpf/prog_tests/sockmap_basic.c | 76 +++++++++++++++++++ .../selftests/bpf/progs/test_sockmap_copy.c | 48 ++++++++++++ 2 files changed, 124 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/test_sockmap_copy.c diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c index 96e7b7f84c65..d30cabc00e9e 100644 --- a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c +++ b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c @@ -4,6 +4,7 @@ #include "test_progs.h" #include "test_skmsg_load_helpers.skel.h" +#include "test_sockmap_copy.skel.h" #define TCP_REPAIR 19 /* TCP sock is under repair right now */ @@ -101,6 +102,77 @@ static void test_skmsg_helpers(enum bpf_map_type map_type) test_skmsg_load_helpers__destroy(skel); } +static void test_sockmap_copy(enum bpf_map_type map_type) +{ + struct bpf_prog_test_run_attr attr; + struct test_sockmap_copy *skel; + __u64 src_cookie, dst_cookie; + int err, prog, s, src, dst; + const __u32 zero = 0; + char dummy[14] = {0}; + + s = connected_socket_v4(); + if (CHECK_FAIL(s == -1)) + return; + + skel = test_sockmap_copy__open_and_load(); + if (CHECK_FAIL(!skel)) { + close(s); + perror("test_sockmap_copy__open_and_load"); + return; + } + + prog = bpf_program__fd(skel->progs.copy_sock_map); + src = bpf_map__fd(skel->maps.src); + if (map_type == BPF_MAP_TYPE_SOCKMAP) + dst = bpf_map__fd(skel->maps.dst_sock_map); + else + dst = bpf_map__fd(skel->maps.dst_sock_hash); + + err = bpf_map_update_elem(src, &zero, &s, BPF_NOEXIST); + if (CHECK_FAIL(err)) { + perror("bpf_map_update"); + goto out; + } + + err = bpf_map_lookup_elem(src, &zero, &src_cookie); + if (CHECK_FAIL(err)) { + perror("bpf_map_lookup_elem(src)"); + goto out; + } + + attr = (struct bpf_prog_test_run_attr){ + .prog_fd = prog, + .repeat = 1, + .data_in = dummy, + .data_size_in = sizeof(dummy), + }; + + err = bpf_prog_test_run_xattr(&attr); + if (err) { + test__fail(); + perror("bpf_prog_test_run"); + goto out; + } else if (!attr.retval) { + PRINT_FAIL("bpf_prog_test_run: program returned %u\n", + attr.retval); + goto out; + } + + err = bpf_map_lookup_elem(dst, &zero, &dst_cookie); + if (CHECK_FAIL(err)) { + perror("bpf_map_lookup_elem(dst)"); + goto out; + } + + if (dst_cookie != src_cookie) + PRINT_FAIL("cookie %llu != %llu\n", dst_cookie, src_cookie); + +out: + close(s); + test_sockmap_copy__destroy(skel); +} + void test_sockmap_basic(void) { if (test__start_subtest("sockmap create_update_free")) @@ -111,4 +183,8 @@ void test_sockmap_basic(void) test_skmsg_helpers(BPF_MAP_TYPE_SOCKMAP); if (test__start_subtest("sockhash sk_msg load helpers")) test_skmsg_helpers(BPF_MAP_TYPE_SOCKHASH); + if (test__start_subtest("sockmap copy")) + test_sockmap_copy(BPF_MAP_TYPE_SOCKMAP); + if (test__start_subtest("sockhash copy")) + test_sockmap_copy(BPF_MAP_TYPE_SOCKHASH); } diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_copy.c b/tools/testing/selftests/bpf/progs/test_sockmap_copy.c new file mode 100644 index 000000000000..9d0c9f28cab2 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_sockmap_copy.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2020 Cloudflare +#include "vmlinux.h" +#include <bpf/bpf_helpers.h> + +struct { + __uint(type, BPF_MAP_TYPE_SOCKMAP); + __uint(max_entries, 1); + __type(key, __u32); + __type(value, __u64); +} src SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_SOCKMAP); + __uint(max_entries, 1); + __type(key, __u32); + __type(value, __u64); +} dst_sock_map SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_SOCKHASH); + __uint(max_entries, 1); + __type(key, __u32); + __type(value, __u64); +} dst_sock_hash SEC(".maps"); + +SEC("classifier/copy_sock_map") +int copy_sock_map(void *ctx) +{ + struct bpf_sock *sk; + bool failed = false; + __u32 key = 0; + + sk = bpf_map_lookup_elem(&src, &key); + if (!sk) + return SK_DROP; + + if (bpf_map_update_elem(&dst_sock_map, &key, sk, 0)) + failed = true; + + if (bpf_map_update_elem(&dst_sock_hash, &key, sk, 0)) + failed = true; + + bpf_sk_release(sk); + return failed ? SK_DROP : SK_PASS; +} + +char _license[] SEC("license") = "GPL"; -- 2.25.1

5 years, 1 month

2
4
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[PATCH bpf-next v2 6/6] selftests: bpf: test sockmap update from BPF

by Lorenz Bauer

Add a test which copies a socket from a sockmap into another sockmap or sockhash. This excercises bpf_map_update_elem support from BPF context. Compare the socket cookies from source and destination to ensure that the copy succeeded. Signed-off-by: Lorenz Bauer <lmb(a)cloudflare.com> --- .../selftests/bpf/prog_tests/sockmap_basic.c | 71 +++++++++++++++++++ .../selftests/bpf/progs/test_sockmap_copy.c | 48 +++++++++++++ 2 files changed, 119 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/test_sockmap_copy.c diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c index 96e7b7f84c65..cd05ff5e88e1 100644 --- a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c +++ b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c @@ -4,6 +4,7 @@ #include "test_progs.h" #include "test_skmsg_load_helpers.skel.h" +#include "test_sockmap_copy.skel.h" #define TCP_REPAIR 19 /* TCP sock is under repair right now */ @@ -101,6 +102,72 @@ static void test_skmsg_helpers(enum bpf_map_type map_type) test_skmsg_load_helpers__destroy(skel); } +static void test_sockmap_copy(enum bpf_map_type map_type) +{ + struct bpf_prog_test_run_attr tattr; + struct test_sockmap_copy *skel; + __u64 src_cookie, dst_cookie; + int err, prog, src, dst; + const __u32 zero = 0; + char dummy[14] = {0}; + __s64 sk; + + sk = connected_socket_v4(); + if (CHECK_FAIL(sk == -1)) + return; + + skel = test_sockmap_copy__open_and_load(); + if (CHECK_FAIL(!skel)) { + close(sk); + perror("test_sockmap_copy__open_and_load"); + return; + } + + prog = bpf_program__fd(skel->progs.copy_sock_map); + src = bpf_map__fd(skel->maps.src); + if (map_type == BPF_MAP_TYPE_SOCKMAP) + dst = bpf_map__fd(skel->maps.dst_sock_map); + else + dst = bpf_map__fd(skel->maps.dst_sock_hash); + + err = bpf_map_update_elem(src, &zero, &sk, BPF_NOEXIST); + if (CHECK_FAIL(err)) { + perror("bpf_map_update"); + goto out; + } + + err = bpf_map_lookup_elem(src, &zero, &src_cookie); + if (CHECK_FAIL(err)) { + perror("bpf_map_lookup_elem(src)"); + goto out; + } + + tattr = (struct bpf_prog_test_run_attr){ + .prog_fd = prog, + .repeat = 1, + .data_in = dummy, + .data_size_in = sizeof(dummy), + }; + + err = bpf_prog_test_run_xattr(&tattr); + if (CHECK_ATTR(err || !tattr.retval, "bpf_prog_test_run", + "errno=%u retval=%u\n", errno, tattr.retval)) + goto out; + + err = bpf_map_lookup_elem(dst, &zero, &dst_cookie); + if (CHECK_FAIL(err)) { + perror("bpf_map_lookup_elem(dst)"); + goto out; + } + + if (dst_cookie != src_cookie) + PRINT_FAIL("cookie %llu != %llu\n", dst_cookie, src_cookie); + +out: + close(sk); + test_sockmap_copy__destroy(skel); +} + void test_sockmap_basic(void) { if (test__start_subtest("sockmap create_update_free")) @@ -111,4 +178,8 @@ void test_sockmap_basic(void) test_skmsg_helpers(BPF_MAP_TYPE_SOCKMAP); if (test__start_subtest("sockhash sk_msg load helpers")) test_skmsg_helpers(BPF_MAP_TYPE_SOCKHASH); + if (test__start_subtest("sockmap copy")) + test_sockmap_copy(BPF_MAP_TYPE_SOCKMAP); + if (test__start_subtest("sockhash copy")) + test_sockmap_copy(BPF_MAP_TYPE_SOCKHASH); } diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_copy.c b/tools/testing/selftests/bpf/progs/test_sockmap_copy.c new file mode 100644 index 000000000000..9d0c9f28cab2 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_sockmap_copy.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2020 Cloudflare +#include "vmlinux.h" +#include <bpf/bpf_helpers.h> + +struct { + __uint(type, BPF_MAP_TYPE_SOCKMAP); + __uint(max_entries, 1); + __type(key, __u32); + __type(value, __u64); +} src SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_SOCKMAP); + __uint(max_entries, 1); + __type(key, __u32); + __type(value, __u64); +} dst_sock_map SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_SOCKHASH); + __uint(max_entries, 1); + __type(key, __u32); + __type(value, __u64); +} dst_sock_hash SEC(".maps"); + +SEC("classifier/copy_sock_map") +int copy_sock_map(void *ctx) +{ + struct bpf_sock *sk; + bool failed = false; + __u32 key = 0; + + sk = bpf_map_lookup_elem(&src, &key); + if (!sk) + return SK_DROP; + + if (bpf_map_update_elem(&dst_sock_map, &key, sk, 0)) + failed = true; + + if (bpf_map_update_elem(&dst_sock_hash, &key, sk, 0)) + failed = true; + + bpf_sk_release(sk); + return failed ? SK_DROP : SK_PASS; +} + +char _license[] SEC("license") = "GPL"; -- 2.25.1

5 years, 1 month

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Re: WARNING in __cfg80211_connect_result

by syzbot

syzbot has bisected this issue to: commit e7096c131e5161fa3b8e52a650d7719d2857adfd Author: Jason A. Donenfeld <Jason(a)zx2c4.com> Date: Sun Dec 8 23:27:34 2019 +0000 net: WireGuard secure network tunnel bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=175ad8b1900000 start commit: e3ec1e8c net: eliminate meaningless memcpy to data in pskb.. git tree: net-next final oops: https://syzkaller.appspot.com/x/report.txt?x=14dad8b1900000 console output: https://syzkaller.appspot.com/x/log.txt?x=10dad8b1900000 kernel config: https://syzkaller.appspot.com/x/.config?x=3d400a47d1416652 dashboard link: https://syzkaller.appspot.com/bug?extid=cc4c0f394e2611edba66 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15d9de91900000 Reported-by: syzbot+cc4c0f394e2611edba66(a)syzkaller.appspotmail.com Fixes: e7096c131e51 ("net: WireGuard secure network tunnel") For information about bisection process see: https://goo.gl/tpsmEJ#bisection

5 years, 1 month

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[PATCH AUTOSEL 4.19 15/18] tools/testing/selftests/cgroup/cgroup_util.c: cg_read_strcmp: fix null pointer dereference

by Sasha Levin

From: Gaurav Singh <gaurav1086(a)gmail.com> [ Upstream commit d830020656c5b68ced962ed3cb51a90e0a89d4c4 ] Haven't reproduced this issue. This PR is does a minor code cleanup. Signed-off-by: Gaurav Singh <gaurav1086(a)gmail.com> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Reviewed-by: Andrew Morton <akpm(a)linux-foundation.org> Cc: Shuah Khan <shuah(a)kernel.org> Cc: Tejun Heo <tj(a)kernel.org> Cc: Michal Koutn <mkoutny(a)suse.com> Cc: Roman Gushchin <guro(a)fb.com> Cc: Christian Brauner <christian.brauner(a)ubuntu.com> Cc: Chris Down <chris(a)chrisdown.name> Link: http://lkml.kernel.org/r/20200726013808.22242-1-gaurav1086@gmail.com Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/cgroup/cgroup_util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/cgroup/cgroup_util.c b/tools/testing/selftests/cgroup/cgroup_util.c index 075cb0c730149..90418d79ef676 100644 --- a/tools/testing/selftests/cgroup/cgroup_util.c +++ b/tools/testing/selftests/cgroup/cgroup_util.c @@ -95,7 +95,7 @@ int cg_read_strcmp(const char *cgroup, const char *control, /* Handle the case of comparing against empty string */ if (!expected) - size = 32; + return -1; else size = strlen(expected) + 1; -- 2.25.1

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