June 2020 - Linux-kselftest-mirror

[PATCH v2 net-next 0/3] ptp: Add adjust phase to support phase offset.

by vincent.cheng.xh＠renesas.com

From: Vincent Cheng <vincent.cheng.xh(a)renesas.com> This series adds adjust phase to the PTP Hardware Clock device interface. Some PTP hardware clocks have a write phase mode that has a built-in hardware filtering capability. The write phase mode utilizes a phase offset control word instead of a frequency offset control word. Add adjust phase function to take advantage of this capability. Changes since v1: - As suggested by Richard Cochran: 1. ops->adjphase is new so need to check for non-null function pointer. 2. Kernel coding style uses lower_case_underscores. 3. Use existing PTP clock API for delayed worker. Vincent Cheng (3): ptp: Add adjphase function to support phase offset control. ptp: Add adjust_phase to ptp_clock_caps capability. ptp: ptp_clockmatrix: Add adjphase() to support PHC write phase mode. drivers/ptp/ptp_chardev.c | 1 + drivers/ptp/ptp_clock.c | 3 ++ drivers/ptp/ptp_clockmatrix.c | 92 +++++++++++++++++++++++++++++++++++ drivers/ptp/ptp_clockmatrix.h | 8 ++- include/linux/ptp_clock_kernel.h | 6 ++- include/uapi/linux/ptp_clock.h | 4 +- tools/testing/selftests/ptp/testptp.c | 6 ++- 7 files changed, 114 insertions(+), 6 deletions(-) -- 2.7.4

1 year, 8 months

5
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[PATCH V2 0/3] riscv: add support for restartable sequence

by Vincent Chen

Add RSEQ, restartable sequence, support and related selftest to RISCV. The Kconfig option HAVE_REGS_AND_STACK_ACCESS_API is also required by RSEQ because RSEQ will modify the content of pt_regs.sepc through instruction_pointer_set() during the fixup procedure. In order to select the config HAVE_REGS_AND_STACK_ACCESS_API, the missing APIs for accessing pt_regs are also added in this patch set. The relevant RSEQ tests in kselftest require the Binutils patch "RISC-V: Fix linker problems with TLS copy relocs" to avoid placing PREINIT_ARRAY and TLS variable of librseq.so at the same address. https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=3e7bd7f… A segmental fault will happen if binutils misses this patch. Patrick Stählin (1): riscv: add required functions to enable HAVE_REGS_AND_STACK_ACCESS_API Vincent Chen (2): riscv: Add support for restartable sequence rseq/selftests: Add support for riscv Changes since v1: 1. Use the correct register name to access pt_regs arch/riscv/Kconfig | 2 + arch/riscv/include/asm/ptrace.h | 29 +- arch/riscv/kernel/entry.S | 4 + arch/riscv/kernel/ptrace.c | 99 +++++ arch/riscv/kernel/signal.c | 2 + tools/testing/selftests/rseq/param_test.c | 23 ++ tools/testing/selftests/rseq/rseq-riscv.h | 622 ++++++++++++++++++++++++++++++ tools/testing/selftests/rseq/rseq.h | 2 + 8 files changed, 782 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/rseq/rseq-riscv.h -- 2.7.4

2 years, 9 months

3
8
0 0

[PATCH] selftests/seccomp: fix ptrace tests on powerpc

by Thadeu Lima de Souza Cascardo

As pointed out by Michael Ellerman, the ptrace ABI on powerpc does not allow or require the return code to be set on syscall entry when skipping the syscall. It will always return ENOSYS and the return code must be set on syscall exit. This code does that, behaving more similarly to strace. It still sets the return code on entry, which is overridden on powerpc, and it will always repeat the same on exit. Also, on powerpc, the errno is not inverted, and depends on ccr.so being set. This has been tested on powerpc and amd64. Cc: Michael Ellerman <mpe(a)ellerman.id.au> Cc: Kees Cook <keescook(a)google.com> Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo(a)canonical.com> --- tools/testing/selftests/seccomp/seccomp_bpf.c | 24 +++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c index 252140a52553..b90a9190ba88 100644 --- a/tools/testing/selftests/seccomp/seccomp_bpf.c +++ b/tools/testing/selftests/seccomp/seccomp_bpf.c @@ -1738,6 +1738,14 @@ void change_syscall(struct __test_metadata *_metadata, TH_LOG("Can't modify syscall return on this architecture"); #else regs.SYSCALL_RET = result; +# if defined(__powerpc__) + if (result < 0) { + regs.SYSCALL_RET = -result; + regs.ccr |= 0x10000000; + } else { + regs.ccr &= ~0x10000000; + } +# endif #endif #ifdef HAVE_GETREGS @@ -1796,6 +1804,7 @@ void tracer_ptrace(struct __test_metadata *_metadata, pid_t tracee, int ret, nr; unsigned long msg; static bool entry; + int *syscall_nr = args; /* * The traditional way to tell PTRACE_SYSCALL entry/exit @@ -1809,10 +1818,15 @@ void tracer_ptrace(struct __test_metadata *_metadata, pid_t tracee, EXPECT_EQ(entry ? PTRACE_EVENTMSG_SYSCALL_ENTRY : PTRACE_EVENTMSG_SYSCALL_EXIT, msg); - if (!entry) + if (!entry && !syscall_nr) return; - nr = get_syscall(_metadata, tracee); + if (entry) + nr = get_syscall(_metadata, tracee); + else + nr = *syscall_nr; + if (syscall_nr) + *syscall_nr = nr; if (nr == __NR_getpid) change_syscall(_metadata, tracee, __NR_getppid, 0); @@ -1889,9 +1903,10 @@ TEST_F(TRACE_syscall, ptrace_syscall_redirected) TEST_F(TRACE_syscall, ptrace_syscall_errno) { + int syscall_nr = -1; /* Swap SECCOMP_RET_TRACE tracer for PTRACE_SYSCALL tracer. */ teardown_trace_fixture(_metadata, self->tracer); - self->tracer = setup_trace_fixture(_metadata, tracer_ptrace, NULL, + self->tracer = setup_trace_fixture(_metadata, tracer_ptrace, &syscall_nr, true); /* Tracer should skip the open syscall, resulting in ESRCH. */ @@ -1900,9 +1915,10 @@ TEST_F(TRACE_syscall, ptrace_syscall_errno) TEST_F(TRACE_syscall, ptrace_syscall_faked) { + int syscall_nr = -1; /* Swap SECCOMP_RET_TRACE tracer for PTRACE_SYSCALL tracer. */ teardown_trace_fixture(_metadata, self->tracer); - self->tracer = setup_trace_fixture(_metadata, tracer_ptrace, NULL, + self->tracer = setup_trace_fixture(_metadata, tracer_ptrace, &syscall_nr, true); /* Tracer should skip the gettid syscall, resulting fake pid. */ -- 2.25.1

3 years, 7 months

3
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[RFC PATCH 0/1] selftests/run_kselftest.sh: make each test individually selectable

by Hangbin Liu

Hi, this patch enhanced the run_kselftest.sh to make the tests individually selectable. I'm not sure the if I could add the reuslt in the patch commit, as the log is too long. So I just put the result to the cover-letter: Note: I use `tr -s "/-" "_"` to cover the path name in tests to function name. e.g. networking/timestamping -> networking_timestamping. I'm not sure if it's legal in Makefile. Before the patch: ]# ./kselftest_install.sh /tmp/kselftests ]# cat /tmp/kselftests/run_kselftest.sh #!/bin/sh BASE_DIR=$(realpath $(dirname $0)) cd $BASE_DIR . ./kselftest/runner.sh ROOT=$PWD if [ "$1" = "--summary" ]; then logfile=$BASE_DIR/output.log cat /dev/null > $logfile fi [ -w /dev/kmsg ] && echo "kselftest: Running tests in android" >> /dev/kmsg cd android run_many \ "run.sh" cd $ROOT ...<snip>... [ -w /dev/kmsg ] && echo "kselftest: Running tests in zram" >> /dev/kmsg cd zram run_many \ "zram.sh" cd $ROOT After the patch: ]# ./kselftest_install.sh /tmp/kselftests ]# cat /tmp/kselftests/run_kselftest.sh #!/bin/sh BASE_DIR=$(realpath $(dirname $0)) . ./kselftest/runner.sh TESTS="android ...<snip>... zram" run_android() { [ -w /dev/kmsg ] && echo "kselftest: Running tests in android" >> /dev/kmsg cd android run_many \ "run.sh" cd $ROOT } ...<snip>... run_zram() { [ -w /dev/kmsg ] && echo "kselftest: Running tests in zram" >> /dev/kmsg cd zram run_many \ "zram.sh" cd $ROOT } usage() { cat <<EOF usage: ${0##*/} OPTS -s | --summary Only print summary info and put detailed log in output.log -t | --tests Test name you want to run specifically -h | --help Show this usage info EOF } while true; do case "$1" in -s | --summary ) logfile=$BASE_DIR/output.log; cat /dev/null > $logfile; shift ;; -t | --tests ) TESTS=$2; shift 2 ;; -h | --help ) usage; exit 0;; "" ) break;; * ) usage; exit 1;; esac done cd $BASE_DIR ROOT=$PWD for test in $TESTS; do run_$test done Hangbin Liu (1): selftests/run_kselftest.sh: make each test individually selectable tools/testing/selftests/Makefile | 48 +++++++++++++++++++++++++------- tools/testing/selftests/lib.mk | 2 +- 2 files changed, 39 insertions(+), 11 deletions(-) -- 2.19.2

3 years, 7 months

3
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[PATCH] selftests/lkdtm: Use "comm" instead of "diff" for dmesg

by Kees Cook

Instead of full GNU diff (which smaller boot environments may not have), use "comm" which is more available. Reported-by: Naresh Kamboju <naresh.kamboju(a)linaro.org> Link: https://lore.kernel.org/lkml/CA+G9fYtHP+Gg+BrR_GkBMxu2oOi-_e9pATtpb6TVRswv1… Fixes: f131d9edc29d ("selftests/lkdtm: Don't clear dmesg when running tests") Signed-off-by: Kees Cook <keescook(a)chromium.org> --- tools/testing/selftests/lkdtm/run.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/lkdtm/run.sh b/tools/testing/selftests/lkdtm/run.sh index 8383eb89d88a..5fe23009ae13 100755 --- a/tools/testing/selftests/lkdtm/run.sh +++ b/tools/testing/selftests/lkdtm/run.sh @@ -82,7 +82,7 @@ dmesg > "$DMESG" ($SHELL -c 'cat <(echo '"$test"') >'"$TRIGGER" 2>/dev/null) || true # Record and dump the results -dmesg | diff --changed-group-format='%>' --unchanged-group-format='' "$DMESG" - > "$LOG" || true +dmesg | comm -13 "$DMESG" - > "$LOG" || true cat "$LOG" # Check for expected output -- 2.25.1 -- Kees Cook

3 years, 7 months

4
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[PATCH -next] selftests/seccomp: Use bitwise instead of arithmetic operator for flags

by Zou Wei

This silences the following coccinelle warning: "WARNING: sum of probable bitmasks, consider |" tools/testing/selftests/seccomp/seccomp_bpf.c:3131:17-18: WARNING: sum of probable bitmasks, consider | tools/testing/selftests/seccomp/seccomp_bpf.c:3133:18-19: WARNING: sum of probable bitmasks, consider | tools/testing/selftests/seccomp/seccomp_bpf.c:3134:18-19: WARNING: sum of probable bitmasks, consider | tools/testing/selftests/seccomp/seccomp_bpf.c:3135:18-19: WARNING: sum of probable bitmasks, consider | Fixes: 6a21cc50f0c7 ("seccomp: add a return code to trap to userspace") Reported-by: Hulk Robot <hulkci(a)huawei.com> Signed-off-by: Zou Wei <zou_wei(a)huawei.com> --- tools/testing/selftests/seccomp/seccomp_bpf.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c index 89fb3e0..1b4cdf3 100644 --- a/tools/testing/selftests/seccomp/seccomp_bpf.c +++ b/tools/testing/selftests/seccomp/seccomp_bpf.c @@ -3128,11 +3128,11 @@ TEST(get_metadata) static int user_trap_syscall(int nr, unsigned int flags) { struct sock_filter filter[] = { - BPF_STMT(BPF_LD+BPF_W+BPF_ABS, + BPF_STMT(BPF_LD|BPF_W|BPF_ABS, offsetof(struct seccomp_data, nr)), - BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, nr, 0, 1), - BPF_STMT(BPF_RET+BPF_K, SECCOMP_RET_USER_NOTIF), - BPF_STMT(BPF_RET+BPF_K, SECCOMP_RET_ALLOW), + BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, nr, 0, 1), + BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_USER_NOTIF), + BPF_STMT(BPF_RET|BPF_K, SECCOMP_RET_ALLOW), }; struct sock_fprog prog = { -- 2.6.2

3 years, 7 months

2
1
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

3 years, 7 months

2
1
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

3 years, 8 months

4
3
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[PATCHv3] selftests/timers: Turn off timeout setting

by Po-Hsu Lin

The following 4 tests in timers can take longer than the default 45 seconds that added in commit 852c8cbf34d3 ("selftests/kselftest/runner.sh: Add 45 second timeout per test") to run: * nsleep-lat - 2m7.350s * set-timer-lat - 2m0.66s * inconsistency-check - 1m45.074s * raw_skew - 2m0.013s Thus they will be marked as failed with the current 45s setting: not ok 3 selftests: timers: nsleep-lat # TIMEOUT not ok 4 selftests: timers: set-timer-lat # TIMEOUT not ok 6 selftests: timers: inconsistency-check # TIMEOUT not ok 7 selftests: timers: raw_skew # TIMEOUT Disable the timeout setting for timers can make these tests finish properly: ok 3 selftests: timers: nsleep-lat ok 4 selftests: timers: set-timer-lat ok 6 selftests: timers: inconsistency-check ok 7 selftests: timers: raw_skew https://bugs.launchpad.net/bugs/1864626 Fixes: 852c8cbf34d3 ("selftests/kselftest/runner.sh: Add 45 second timeout per test") Signed-off-by: Po-Hsu Lin <po-hsu.lin(a)canonical.com> --- tools/testing/selftests/timers/Makefile | 1 + tools/testing/selftests/timers/settings | 1 + 2 files changed, 2 insertions(+) create mode 100644 tools/testing/selftests/timers/settings diff --git a/tools/testing/selftests/timers/Makefile b/tools/testing/selftests/timers/Makefile index 7656c7c..0e73a16 100644 --- a/tools/testing/selftests/timers/Makefile +++ b/tools/testing/selftests/timers/Makefile @@ -13,6 +13,7 @@ DESTRUCTIVE_TESTS = alarmtimer-suspend valid-adjtimex adjtick change_skew \ TEST_GEN_PROGS_EXTENDED = $(DESTRUCTIVE_TESTS) +TEST_FILES := settings include ../lib.mk diff --git a/tools/testing/selftests/timers/settings b/tools/testing/selftests/timers/settings new file mode 100644 index 0000000..e7b9417 --- /dev/null +++ b/tools/testing/selftests/timers/settings @@ -0,0 +1 @@ +timeout=0 -- 2.7.4

3 years, 8 months

3
4
0 0

[PATCH v5 00/12] kunit: create a centralized executor to dispatch all KUnit tests

by Brendan Higgins

## TL;DR This patchset adds a centralized executor to dispatch tests rather than relying on late_initcall to schedule each test suite separately along with a couple of new features that depend on it. ## What am I trying to do? Conceptually, I am trying to provide a mechanism by which test suites can be grouped together so that they can be reasoned about collectively. The last two of three patches in this series add features which depend on this: PATCH 09/12 Prints out a test plan[1] right before KUnit tests are run; this is valuable because it makes it possible for a test harness to detect whether the number of tests run matches the number of tests expected to be run, ensuring that no tests silently failed. The test plan includes a count of tests that will run. With the centralized executor, the tests are located in a single data structure and thus can be counted. PATCH 10/12 Add a new kernel command-line option which allows the user to specify that the kernel poweroff, halt, or reboot after completing all KUnit tests; this is very handy for running KUnit tests on UML or a VM so that the UML/VM process exits cleanly immediately after running all tests without needing a special initramfs. The centralized executor provides a definitive point when all tests have completed and the poweroff, halt, or reboot could occur. In addition, by dispatching tests from a single location, we can guarantee that all KUnit tests run after late_init is complete, which was a concern during the initial KUnit patchset review (this has not been a problem in practice, but resolving with certainty is nevertheless desirable). Other use cases for this exist, but the above features should provide an idea of the value that this could provide. ## Changes since last revision: - Fixed a compilation error in the centralized executor patch (07/12). I had forgotten to test the patches when building as modules. I verified that works now. - I accidentally merged patches 09/12 and 10/12 in the previous revision (v4), and made them separate patches again. ## Changes since v3: - On the last revision I got some messages from 0day that showed that this patchset didn't work on several architectures, one issue that this patchset addresses is that we were aligning both memory segments as well as structures in the segments to specific byte boundaries which was incorrect. - The issue mentioned above also caused me to test on additional architectures which revealed that some architectures other than UML do not use the default init linker section macro that most architectures use. There are now several new patches (2, 3, 4, and 6). - Fixed a formatting consistency issue in the kernel params documentation patch (11/12). - Add a brief blurb on how and when the kunit_test_suite macro works. ## Remaining work to be done: The only architecture for which I was able to get a compiler, but was apparently unable to get KUnit into a section that the executor to see was m68k - not sure why. Alan Maguire (1): kunit: test: create a single centralized executor for all tests Brendan Higgins (10): vmlinux.lds.h: add linker section for KUnit test suites arch: arm64: add linker section for KUnit test suites arch: microblaze: add linker section for KUnit test suites arch: powerpc: add linker section for KUnit test suites arch: um: add linker section for KUnit test suites arch: xtensa: add linker section for KUnit test suites init: main: add KUnit to kernel init kunit: test: add test plan to KUnit TAP format Documentation: Add kunit_shutdown to kernel-parameters.txt Documentation: kunit: add a brief blurb about kunit_test_suite David Gow (1): kunit: Add 'kunit_shutdown' option .../admin-guide/kernel-parameters.txt | 8 ++ Documentation/dev-tools/kunit/usage.rst | 5 ++ arch/arm64/kernel/vmlinux.lds.S | 3 + arch/microblaze/kernel/vmlinux.lds.S | 4 + arch/powerpc/kernel/vmlinux.lds.S | 4 + arch/um/include/asm/common.lds.S | 4 + arch/xtensa/kernel/vmlinux.lds.S | 4 + include/asm-generic/vmlinux.lds.h | 8 ++ include/kunit/test.h | 76 +++++++++++++----- init/main.c | 4 + lib/kunit/Makefile | 3 +- lib/kunit/executor.c | 63 +++++++++++++++ lib/kunit/test.c | 13 +-- tools/testing/kunit/kunit_kernel.py | 2 +- tools/testing/kunit/kunit_parser.py | 74 ++++++++++++++--- .../test_is_test_passed-all_passed.log | Bin 1562 -> 1567 bytes .../test_data/test_is_test_passed-crash.log | Bin 3016 -> 3021 bytes .../test_data/test_is_test_passed-failure.log | Bin 1700 -> 1705 bytes 18 files changed, 227 insertions(+), 48 deletions(-) create mode 100644 lib/kunit/executor.c These patches are available for download with dependencies here: https://kunit-review.googlesource.com/c/linux/+/3829 [1] https://github.com/isaacs/testanything.github.io/blob/tap14/tap-version-14-… [2] https://patchwork.kernel.org/patch/11383635/ base-commit: 4333a9b0b67bb4e8bcd91bdd80da80b0ec151162 prerequisite-patch-id: 2d4b5aa9fa8ada9ae04c8584b47c299a822b9455 prerequisite-patch-id: 582b6d9d28ce4b71628890ec832df6522ca68de0 -- 2.27.0.212.ge8ba1cc988-goog

3 years, 8 months

3
29
0 0

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Linux-kselftest-mirror June 2020