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

[PATCH v2 0/3] cpuset: Allow setscheduler regardless of manipulated task

by Michal Koutný

Changes in v2: - rebased on mainline - drop is_in_v2_mode() Changes in v1 (https://lore.kernel.org/r/20230629091146.28801-1-mkoutny@suse.com): - added selftests - comments rewording RFC in https://lore.kernel.org/r/20220623124944.2753-1-mkoutny@suse.com Michal Koutný (3): cpuset: Allow setscheduler regardless of manipulated task selftests: cgroup: Minor code reorganizations selftests: cgroup: Add cpuset migrations testcase MAINTAINERS | 2 + kernel/cgroup/cpuset.c | 13 +- tools/testing/selftests/cgroup/.gitignore | 1 + tools/testing/selftests/cgroup/Makefile | 2 + tools/testing/selftests/cgroup/cgroup_util.c | 2 + tools/testing/selftests/cgroup/cgroup_util.h | 2 + tools/testing/selftests/cgroup/test_core.c | 2 +- tools/testing/selftests/cgroup/test_cpuset.c | 272 ++++++++++++++++++ .../selftests/cgroup/test_cpuset_prs.sh | 2 +- 9 files changed, 293 insertions(+), 5 deletions(-) create mode 100644 tools/testing/selftests/cgroup/test_cpuset.c base-commit: e55e5df193d247a38a5e1ac65a5316a0adcc22fa -- 2.41.0

2 years

2
4
0 0

[PATCH v3 00/14] selftests/nolibc: allow run with minimal kernel config

by Zhangjin Wu

Willy, Thomas This is v3 to allow run with minimal kernel config, see v2 [1]. Applied further suggestions from Thomas, It is based on our previous v5 sysret helper series [2] and Thomas' chmod_net removal patchset [3]. Now, a test report on arm/vexpress-a9 without procfs, shmem, tmpfs, net and memfd_create looks like: LOG: testing report for arm/vexpress-a9: 14 chmod_self [SKIPPED] 16 chown_self [SKIPPED] 40 link_cross [SKIPPED] 0 -fstackprotector not supported [SKIPPED] 139 test(s) passed, 4 skipped, 0 failed. See all results in /labs/linux-lab/logging/nolibc/arm-vexpress-a9-nolibc-test.log LOG: testing summary: arch/board | result ------------|------------ arm/vexpress-a9 | 139 test(s) passed, 4 skipped, 0 failed. See all results in /labs/linux-lab/logging/nolibc/arm-vexpress-a9-nolibc-test.log Changes from v2 --> v3: * Added Reviewed-by from Thomas for the whole series, Many Thanks * selftests/nolibc: stat_fault: silence NULL argument warning with glibc selftests/nolibc: gettid: restore for glibc and musl selftests/nolibc: add _LARGEFILE64_SOURCE for musl selftests/nolibc: fix up int_fast16/32_t test cases for musl selftests/nolibc: fix up kernel parameters support selftests/nolibc: stat_timestamps: remove procfs dependency selftests/nolibc: link_cross: use /proc/self/cmdline tools/nolibc: add rmdir() support selftests/nolibc: add a new rmdir() test case selftests/nolibc: fix up failures when CONFIG_PROC_FS=n selftests/nolibc: vfprintf: remove MEMFD_CREATE dependency No code changes except some commit message cleanups. * selftests/nolibc: prepare /tmp for tmpfs or ramfs As suggested by Thomas, simply calling mkdir() and mount() to prepare /tmp can save a stat() call. * selftests/nolibc: chroot_exe: remove procfs dependency As suggested by Thomas, remove the 'weird' get_tmpfile() and use the '/init' for !procfs as we did for stat_timestamps. For the worst-case scene, when '/init' is not there, add ENOENT to the error check list. Now, it is a oneline code change. * selftests/nolibc: add chmod_tmpdir test Without get_tmpfile(), let's direct mkdir() a temp directory for chmod_tmpdir test, it function as a substitute for the removed chmod_net. Now, it is a oneline code change. Best regards, Zhangjin --- [1]: https://lore.kernel.org/lkml/cover.1688078604.git.falcon@tinylab.org/ Zhangjin Wu (14): selftests/nolibc: stat_fault: silence NULL argument warning with glibc selftests/nolibc: gettid: restore for glibc and musl selftests/nolibc: add _LARGEFILE64_SOURCE for musl selftests/nolibc: fix up int_fast16/32_t test cases for musl selftests/nolibc: fix up kernel parameters support selftests/nolibc: stat_timestamps: remove procfs dependency selftests/nolibc: chroot_exe: remove procfs dependency selftests/nolibc: link_cross: use /proc/self/cmdline tools/nolibc: add rmdir() support selftests/nolibc: add a new rmdir() test case selftests/nolibc: fix up failures when CONFIG_PROC_FS=n selftests/nolibc: prepare /tmp for tmpfs or ramfs selftests/nolibc: add chmod_tmpdir test selftests/nolibc: vfprintf: remove MEMFD_CREATE dependency tools/include/nolibc/sys.h | 22 ++++++ tools/testing/selftests/nolibc/nolibc-test.c | 83 +++++++++++++++----- 2 files changed, 87 insertions(+), 18 deletions(-) -- 2.25.1

2 years

2
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[PATCH 0/3] cpuset: Allow setscheduler regardless of manipulated task

by Michal Koutný

Changes in v1: - added selftests - comments rewording RFC in https://lore.kernel.org/r/20220623124944.2753-1-mkoutny@suse.com Michal Koutný (3): cpuset: Allow setscheduler regardless of manipulated task selftests: cgroup: Minor code reorganizations selftests: cgroup: Add cpuset migrations testcase MAINTAINERS | 2 + kernel/cgroup/cpuset.c | 7 + tools/testing/selftests/cgroup/.gitignore | 1 + tools/testing/selftests/cgroup/Makefile | 2 + tools/testing/selftests/cgroup/cgroup_util.c | 2 + tools/testing/selftests/cgroup/cgroup_util.h | 2 + tools/testing/selftests/cgroup/test_core.c | 2 +- tools/testing/selftests/cgroup/test_cpuset.c | 272 ++++++++++++++++++ .../selftests/cgroup/test_cpuset_prs.sh | 2 +- 9 files changed, 290 insertions(+), 2 deletions(-) create mode 100644 tools/testing/selftests/cgroup/test_cpuset.c base-commit: 6995e2de6891c724bfeb2db33d7b87775f913ad1 -- 2.41.0

2 years

2
7
0 0

[PATCH 0/6] KUnit integration for Rust doctests

by Miguel Ojeda

This is the initial KUnit integration for running Rust documentation tests within the kernel. Thank you to the KUnit team for all the input and feedback on this over the months, as well as the Intel LKP 0-Day team! This may be merged through either the KUnit or the Rust trees. If the KUnit team wants to merge it, then that would be great. Please see the message in the main commit for the details. Miguel Ojeda (6): rust: init: make doctests compilable/testable rust: str: make doctests compilable/testable rust: sync: make doctests compilable/testable rust: types: make doctests compilable/testable rust: support running Rust documentation tests as KUnit ones MAINTAINERS: add Rust KUnit files to the KUnit entry MAINTAINERS | 2 + lib/Kconfig.debug | 13 +++ rust/.gitignore | 2 + rust/Makefile | 29 ++++++ rust/bindings/bindings_helper.h | 1 + rust/helpers.c | 7 ++ rust/kernel/init.rs | 25 +++-- rust/kernel/kunit.rs | 156 ++++++++++++++++++++++++++++ rust/kernel/lib.rs | 2 + rust/kernel/str.rs | 4 +- rust/kernel/sync/arc.rs | 9 +- rust/kernel/sync/lock/mutex.rs | 1 + rust/kernel/sync/lock/spinlock.rs | 1 + rust/kernel/types.rs | 6 +- scripts/.gitignore | 2 + scripts/Makefile | 4 + scripts/rustdoc_test_builder.rs | 73 ++++++++++++++ scripts/rustdoc_test_gen.rs | 162 ++++++++++++++++++++++++++++++ 18 files changed, 484 insertions(+), 15 deletions(-) create mode 100644 rust/kernel/kunit.rs create mode 100644 scripts/rustdoc_test_builder.rs create mode 100644 scripts/rustdoc_test_gen.rs base-commit: d2e3115d717197cb2bc020dd1f06b06538474ac3 -- 2.41.0

2 years

11
45
0 0

[linux-next:master] BUILD REGRESSION 6352a698ca5bf26a9199202666b16cf741f579f6

by kernel test robot

tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master branch HEAD: 6352a698ca5bf26a9199202666b16cf741f579f6 Add linux-next specific files for 20230630 Error/Warning reports: https://lore.kernel.org/oe-kbuild-all/202306122223.HHER4zOo-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202306260401.qZlYQpV2-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202306291857.nyJjYwqk-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202306301709.lvrxzyCj-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202306301756.x8dgyYnL-lkp@intel.com Error/Warning: (recently discovered and may have been fixed) arch/parisc/kernel/pdt.c:66:6: warning: no previous prototype for 'arch_report_meminfo' [-Wmissing-prototypes] drivers/bluetooth/btmtk.c:386:32: error: no member named 'dump' in 'struct hci_dev' drivers/bluetooth/btmtk.c:386:44: error: 'struct hci_dev' has no member named 'dump' drivers/char/mem.c:164:25: error: implicit declaration of function 'unxlate_dev_mem_ptr'; did you mean 'xlate_dev_mem_ptr'? [-Werror=implicit-function-declaration] drivers/gpu/drm/i915/soc/intel_gmch.c:41:13: error: variable 'mchbar_addr' set but not used [-Werror=unused-but-set-variable] drivers/mfd/max77541.c:176:18: warning: cast to smaller integer type 'enum max7754x_ids' from 'const void *' [-Wvoid-pointer-to-enum-cast] lib/kunit/executor_test.c:138:4: warning: cast from 'void (*)(const void *)' to 'kunit_action_t *' (aka 'void (*)(void *)') converts to incompatible function type [-Wcast-function-type-strict] lib/kunit/test.c:775:38: warning: cast from 'void (*)(const void *)' to 'kunit_action_t *' (aka 'void (*)(void *)') converts to incompatible function type [-Wcast-function-type-strict] Unverified Error/Warning (likely false positive, please contact us if interested): drivers/usb/cdns3/cdns3-starfive.c:23: warning: expecting prototype for cdns3(). Prototype was for USB_STRAP_HOST() instead fs/btrfs/volumes.c:6407 btrfs_map_block() error: we previously assumed 'mirror_num_ret' could be null (see line 6244) {standard input}: Error: local label `"2" (instance number 9 of a fb label)' is not defined {standard input}:1097: Error: pcrel too far Error/Warning ids grouped by kconfigs: gcc_recent_errors |-- i386-buildonly-randconfig-r005-20230629 | `-- drivers-gpu-drm-i915-soc-intel_gmch.c:error:variable-mchbar_addr-set-but-not-used |-- i386-randconfig-i006-20230629 | `-- drivers-bluetooth-btmtk.c:error:struct-hci_dev-has-no-member-named-dump |-- parisc-allyesconfig | `-- arch-parisc-kernel-pdt.c:warning:no-previous-prototype-for-arch_report_meminfo |-- parisc-defconfig | `-- arch-parisc-kernel-pdt.c:warning:no-previous-prototype-for-arch_report_meminfo |-- parisc64-defconfig | `-- arch-parisc-kernel-pdt.c:warning:no-previous-prototype-for-arch_report_meminfo |-- riscv-allmodconfig | `-- drivers-usb-cdns3-cdns3-starfive.c:warning:expecting-prototype-for-cdns3().-Prototype-was-for-USB_STRAP_HOST()-instead |-- riscv-allyesconfig | `-- drivers-usb-cdns3-cdns3-starfive.c:warning:expecting-prototype-for-cdns3().-Prototype-was-for-USB_STRAP_HOST()-instead |-- sh-allmodconfig | |-- drivers-char-mem.c:error:implicit-declaration-of-function-unxlate_dev_mem_ptr | |-- standard-input:Error:local-label-(instance-number-of-a-fb-label)-is-not-defined | `-- standard-input:Error:pcrel-too-far |-- sparc64-randconfig-r004-20230630 | `-- drivers-bluetooth-btmtk.c:error:struct-hci_dev-has-no-member-named-dump `-- x86_64-randconfig-m001-20230629 `-- fs-btrfs-volumes.c-btrfs_map_block()-error:we-previously-assumed-mirror_num_ret-could-be-null-(see-line-) clang_recent_errors |-- arm64-randconfig-r015-20230630 | |-- lib-kunit-executor_test.c:warning:cast-from-void-(-)(const-void-)-to-kunit_action_t-(aka-void-(-)(void-)-)-converts-to-incompatible-function-type | `-- lib-kunit-test.c:warning:cast-from-void-(-)(const-void-)-to-kunit_action_t-(aka-void-(-)(void-)-)-converts-to-incompatible-function-type |-- hexagon-randconfig-r005-20230630 | |-- lib-kunit-executor_test.c:warning:cast-from-void-(-)(const-void-)-to-kunit_action_t-(aka-void-(-)(void-)-)-converts-to-incompatible-function-type | `-- lib-kunit-test.c:warning:cast-from-void-(-)(const-void-)-to-kunit_action_t-(aka-void-(-)(void-)-)-converts-to-incompatible-function-type |-- hexagon-randconfig-r041-20230630 | |-- lib-kunit-executor_test.c:warning:cast-from-void-(-)(const-void-)-to-kunit_action_t-(aka-void-(-)(void-)-)-converts-to-incompatible-function-type | `-- lib-kunit-test.c:warning:cast-from-void-(-)(const-void-)-to-kunit_action_t-(aka-void-(-)(void-)-)-converts-to-incompatible-function-type |-- i386-randconfig-i016-20230629 | `-- drivers-bluetooth-btmtk.c:error:no-member-named-dump-in-struct-hci_dev |-- mips-randconfig-r032-20230629 | `-- lib-kunit-test.c:warning:cast-from-void-(-)(const-void-)-to-kunit_action_t-(aka-void-(-)(void-)-)-converts-to-incompatible-function-type |-- riscv-randconfig-r042-20230630 | `-- drivers-mfd-max77541.c:warning:cast-to-smaller-integer-type-enum-max7754x_ids-from-const-void |-- s390-randconfig-r044-20230630 | |-- lib-kunit-executor_test.c:warning:cast-from-void-(-)(const-void-)-to-kunit_action_t-(aka-void-(-)(void-)-)-converts-to-incompatible-function-type | `-- lib-kunit-test.c:warning:cast-from-void-(-)(const-void-)-to-kunit_action_t-(aka-void-(-)(void-)-)-converts-to-incompatible-function-type `-- x86_64-randconfig-r023-20230630 `-- drivers-bluetooth-btmtk.c:error:no-member-named-dump-in-struct-hci_dev elapsed time: 737m configs tested: 123 configs skipped: 10 tested configs: alpha allyesconfig gcc alpha defconfig gcc alpha randconfig-r006-20230630 gcc arc allyesconfig gcc arc defconfig gcc arc randconfig-r004-20230630 gcc arc randconfig-r025-20230630 gcc arc randconfig-r043-20230630 gcc arm allmodconfig gcc arm allyesconfig gcc arm bcm2835_defconfig clang arm defconfig gcc arm dove_defconfig clang arm hisi_defconfig gcc arm lpc18xx_defconfig gcc arm netwinder_defconfig clang arm randconfig-r012-20230630 gcc arm randconfig-r046-20230630 gcc arm sama5_defconfig gcc arm socfpga_defconfig clang arm64 allyesconfig gcc arm64 defconfig gcc arm64 randconfig-r001-20230630 gcc arm64 randconfig-r014-20230630 clang arm64 randconfig-r015-20230630 clang csky defconfig gcc hexagon randconfig-r005-20230630 clang hexagon randconfig-r041-20230630 clang hexagon randconfig-r045-20230630 clang i386 allyesconfig gcc i386 buildonly-randconfig-r004-20230629 gcc i386 buildonly-randconfig-r005-20230629 gcc i386 buildonly-randconfig-r006-20230629 gcc i386 debian-10.3 gcc i386 defconfig gcc i386 randconfig-i001-20230629 gcc i386 randconfig-i002-20230629 gcc i386 randconfig-i003-20230629 gcc i386 randconfig-i004-20230629 gcc i386 randconfig-i005-20230629 gcc i386 randconfig-i006-20230629 gcc i386 randconfig-i011-20230629 clang i386 randconfig-i012-20230629 clang i386 randconfig-i013-20230629 clang i386 randconfig-i014-20230629 clang i386 randconfig-i015-20230629 clang i386 randconfig-i016-20230629 clang i386 randconfig-r021-20230630 clang loongarch allmodconfig gcc loongarch allnoconfig gcc loongarch defconfig gcc m68k allmodconfig gcc m68k allyesconfig gcc m68k atari_defconfig gcc m68k defconfig gcc mips allmodconfig gcc mips allyesconfig gcc mips maltaaprp_defconfig clang mips randconfig-r002-20230630 clang mips randconfig-r013-20230630 gcc mips randconfig-r032-20230629 clang mips rb532_defconfig gcc nios2 defconfig gcc nios2 randconfig-r005-20230630 gcc nios2 randconfig-r024-20230630 gcc nios2 randconfig-r026-20230630 gcc parisc allyesconfig gcc parisc defconfig gcc parisc64 defconfig gcc powerpc allmodconfig gcc powerpc allnoconfig gcc powerpc mpc837x_rdb_defconfig gcc powerpc randconfig-r003-20230630 gcc powerpc randconfig-r022-20230630 clang powerpc randconfig-r034-20230629 gcc riscv allmodconfig gcc riscv allnoconfig gcc riscv allyesconfig gcc riscv defconfig gcc riscv nommu_k210_sdcard_defconfig gcc riscv randconfig-r042-20230630 clang riscv rv32_defconfig gcc s390 allmodconfig gcc s390 allyesconfig gcc s390 defconfig gcc s390 randconfig-r001-20230630 gcc s390 randconfig-r044-20230630 clang s390 zfcpdump_defconfig gcc sh allmodconfig gcc sh r7780mp_defconfig gcc sparc allyesconfig gcc sparc defconfig gcc sparc randconfig-r016-20230630 gcc um allmodconfig clang um allnoconfig clang um allyesconfig clang um defconfig gcc um i386_defconfig gcc um randconfig-r004-20230630 clang um x86_64_defconfig gcc x86_64 allyesconfig gcc x86_64 buildonly-randconfig-r001-20230629 gcc x86_64 buildonly-randconfig-r002-20230629 gcc x86_64 buildonly-randconfig-r003-20230629 gcc x86_64 defconfig gcc x86_64 kexec gcc x86_64 randconfig-r011-20230630 clang x86_64 randconfig-r023-20230630 clang x86_64 randconfig-r036-20230629 gcc x86_64 randconfig-x001-20230629 clang x86_64 randconfig-x002-20230629 clang x86_64 randconfig-x003-20230629 clang x86_64 randconfig-x004-20230629 clang x86_64 randconfig-x005-20230629 clang x86_64 randconfig-x006-20230629 clang x86_64 randconfig-x011-20230629 gcc x86_64 randconfig-x012-20230629 gcc x86_64 randconfig-x013-20230629 gcc x86_64 randconfig-x014-20230629 gcc x86_64 randconfig-x015-20230629 gcc x86_64 randconfig-x016-20230629 gcc x86_64 rhel-8.3-rust clang x86_64 rhel-8.3 gcc -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

2 years

1
0
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[PATCH bpf-next v4 0/2] Fix missing synack in BPF cgroup_skb filters

by Kui-Feng Lee

TCP SYN/ACK packets of connections from processes/sockets outside a cgroup on the same host are not received by the cgroup's installed cgroup_skb filters. There were two BPF cgroup_skb programs attached to a cgroup named "my_cgroup". SEC("cgroup_skb/ingress") int ingress(struct __sk_buff *skb) { /* .... process skb ... */ return 1; } SEC("cgroup_skb/egress") int egress(struct __sk_buff *skb) { /* .... process skb ... */ return 1; } We discovered that when running the command "nc -6 -l 8000" in "my_group" and connecting to it from outside of "my_cgroup" with the command "nc -6 localhost 8000", the egress filter did not detect the SYN/ACK packet. However, we did observe the SYN/ACK packet at the ingress when connecting from a socket in "my_cgroup" to a socket outside of it. We came across BPF_CGROUP_RUN_PROG_INET_EGRESS(). This macro is responsible for calling BPF programs that are attached to the egress hook of a cgroup and it skips programs if the sending socket is not the owner of the skb. Specifically, in our situation, the SYN/ACK skb is owned by a struct request_sock instance, but the sending socket is the listener socket we use to receive incoming connections. The request_sock is created to manage an incoming connection. It has been determined that checking the owner of a skb against the sending socket is not required. Removing this check will allow the filters to receive SYN/ACK packets. To ensure that cgroup_skb filters can receive all signaling packets, including SYN, SYN/ACK, ACK, FIN, and FIN/ACK. A new self-test has been added as well. Changes from v3: - Check SKB ownership against full socket instead of just remove the check. - Address the issue raised by Yonghong. - Put more details down in the commit message. Changes from v2: - Remove redundant blank lines. Changes from v1: - Check the number of observed packets instead of just sleeping. - Use ASSERT_XXX() instead of CHECK()/ [v1] https://lore.kernel.org/all/20230612191641.441774-1-kuifeng@meta.com/ [v2] https://lore.kernel.org/all/20230617052756.640916-2-kuifeng@meta.com/ [v3] https://lore.kernel.org/all/20230620171409.166001-1-kuifeng@meta.com/ Kui-Feng Lee (2): net: bpf: Check SKB ownership against full socket. selftests/bpf: Verify that the cgroup_skb filters receive expected packets. include/linux/bpf-cgroup.h | 4 +- tools/testing/selftests/bpf/cgroup_helpers.c | 12 + tools/testing/selftests/bpf/cgroup_helpers.h | 1 + tools/testing/selftests/bpf/cgroup_tcp_skb.h | 35 ++ .../selftests/bpf/prog_tests/cgroup_tcp_skb.c | 402 ++++++++++++++++++ .../selftests/bpf/progs/cgroup_tcp_skb.c | 382 +++++++++++++++++ 6 files changed, 834 insertions(+), 2 deletions(-) create mode 100644 tools/testing/selftests/bpf/cgroup_tcp_skb.h create mode 100644 tools/testing/selftests/bpf/prog_tests/cgroup_tcp_skb.c create mode 100644 tools/testing/selftests/bpf/progs/cgroup_tcp_skb.c -- 2.34.1

2 years

3
4
0 0

[PATCH v2 00/15] allow run with minimal kernel config

by Zhangjin Wu

Willy, Thomas This is v2 to allow run with minimal kernel config, see v1 [1]. It mainly applied the suggestions from Thomas. It is based on our previous v5 sysret helper series [2] and Thomas' chmod_net removal patchset [3]. Now, a test report on arm/vexpress-a9 without procfs, shmem, tmpfs, net and memfd_create looks like: LOG: testing report for arm/vexpress-a9: 14 chmod_net [SKIPPED] 15 chmod_self [SKIPPED] 17 chown_self [SKIPPED] 41 link_cross [SKIPPED] 0 -fstackprotector not supported [SKIPPED] 139 test(s) passed, 5 skipped, 0 failed. See all results in /labs/linux-lab/logging/nolibc/arm-vexpress-a9-nolibc-test.log LOG: testing summary: arch/board | result ------------|------------ arm/vexpress-a9 | 139 test(s) passed, 5 skipped, 0 failed. See all results in /labs/linux-lab/logging/nolibc/arm-vexpress-a9-nolibc-test.log Changes from v1 --> v2: * selftests/nolibc: stat_fault: silence NULL argument warning with glibc selftests/nolibc: gettid: restore for glibc and musl selftests/nolibc: add _LARGEFILE64_SOURCE for musl selftests/nolibc: add a new rmdir() test case selftests/nolibc: fix up failures when CONFIG_PROC_FS=n The same as v1, only a few of commit message changes. * selftests/nolibc: fix up int_fast16/32_t test cases for musl Applied the method suggested by Thomas, two new macros are added to get SINT_MAX_OF_TYPE(type) and SINT_MIN_OF_TYPE(type). * selftests/nolibc: fix up kernel parameters support After discuss with Thomas and with more tests, both of argv[1] and NOLIBC_TEST environment variable should be verified to support such kernel parameters: NOLIBC_TEST=syscall noapic NOLIBC_TEST=syscall noapic * selftests/nolibc: stat_timestamps: remove procfs dependency Add '/init' and '/' for !procfs, don't skip it. * selftests/nolibc: link_cross: use /proc/self/cmdline Use /proc/self/cmdline instead of /proc/self/net, the ramfs based /tmp/file doesn't work as expected (not really crossdev). * tools/nolibc: add rmdir() support Now, rebased on __sysret() from sysret helper patchset [2]. * selftests/nolibc: prepare /tmp for tmpfs or ramfs Removed the hugetlbfs prepare part, not really required. Don't remove /tmp and reserve it to use ramfs as tmpfs. * selftests/nolibc: add common get_tmpfile() selftests/nolibc: rename chroot_exe to chroot_tmpfile Some cleanups. * selftests/nolibc: add chmod_tmpfile test To avoid conflict with Thomas' chmod_net removal patch [3], a new chmod_tmpfile is added (in v1, there is a rename patch from chmod_net to chmod_good) Still to avoid conflict, these two are removed in this series: - selftests/nolibc: rename proc variable to has_proc - selftests/nolibc: rename euid0 variable to is_root * selftests/nolibc: vfprintf: remove MEMFD_CREATE dependency Many checks are removed, only reserve the direct tmpfs access version. Best regards, Zhangjin --- [1]: https://lore.kernel.org/lkml/cover.1687344643.git.falcon@tinylab.org/ [2]: https://lore.kernel.org/lkml/cover.1687976753.git.falcon@tinylab.org/ [3]: https://lore.kernel.org/lkml/20230624-proc-net-setattr-v1-0-73176812adee@we… Zhangjin Wu (15): selftests/nolibc: stat_fault: silence NULL argument warning with glibc selftests/nolibc: gettid: restore for glibc and musl selftests/nolibc: add _LARGEFILE64_SOURCE for musl selftests/nolibc: fix up int_fast16/32_t test cases for musl selftests/nolibc: fix up kernel parameters support selftests/nolibc: stat_timestamps: remove procfs dependency selftests/nolibc: link_cross: use /proc/self/cmdline tools/nolibc: add rmdir() support selftests/nolibc: add a new rmdir() test case selftests/nolibc: fix up failures when CONFIG_PROC_FS=n selftests/nolibc: prepare /tmp for tmpfs or ramfs selftests/nolibc: add common get_tmpfile() selftests/nolibc: rename chroot_exe to chroot_tmpfile selftests/nolibc: add chmod_tmpfile test selftests/nolibc: vfprintf: remove MEMFD_CREATE dependency tools/include/nolibc/sys.h | 22 ++++ tools/testing/selftests/nolibc/nolibc-test.c | 102 +++++++++++++++---- 2 files changed, 106 insertions(+), 18 deletions(-) -- 2.25.1

2 years

2
21
0 0

[PATCH 0/2] KVM: selftests: Add tests for PEBS and MSR_IA32_DS_AREA

by Jinrong Liang

Hi, This patch series introduces two tests to further enhance and verify the functionality of the KVM subsystem. These tests focus on MSR_IA32_DS_AREA and MSR_IA32_PERF_CAPABILITIES. The first patch adds tests to verify the correct behavior when trying to set MSR_IA32_DS_AREA with a non-classical address. It checks that KVM is correctly faulting these non-classical addresses, ensuring the accuracy and stability of the KVM subsystem. The second patch includes a comprehensive PEBS test that checks all possible combinations of PEBS-related bits in MSR_IA32_PERF_CAPABILITIES. This helps to ensure the accuracy of PEBS functionality. Feedback and suggestions are welcomed and appreciated. Sincerely, Jinrong Liang Jinrong Liang (2): KVM: selftests: Test consistency of setting MSR_IA32_DS_AREA KVM: selftests: Add PEBS test for MSR_IA32_PERF_CAPABILITIES .../selftests/kvm/x86_64/vmx_pmu_caps_test.c | 171 ++++++++++++++++++ 1 file changed, 171 insertions(+) base-commit: 31b4fc3bc64aadd660c5bfa5178c86a7ba61e0f7 -- 2.31.1

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[PATCH v1 0/2] mm/memfd: fix sysctl MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED

by jeffxu＠chromium.org

From: Jeff Xu <jeffxu(a)google.com> When sysctl vm.memfd_noexec is 2 (MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED), memfd_create(.., MFD_EXEC) should fail. This complies with how MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED is defined - "memfd_create() without MFD_NOEXEC_SEAL will be rejected" Thanks to Dominique Martinet <asmadeus(a)codewreck.org> who reported the bug. see [1] for context. [1] https://lore.kernel.org/linux-mm/CABi2SkXUX_QqTQ10Yx9bBUGpN1wByOi_=gZU6WEy5… Jeff Xu (2): mm/memfd: sysctl: fix MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED selftests/memfd: sysctl: fix MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED mm/memfd.c | 48 +++++++++++----------- tools/testing/selftests/memfd/memfd_test.c | 5 +++ 2 files changed, 30 insertions(+), 23 deletions(-) -- 2.41.0.255.g8b1d071c50-goog

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[PATCH v2] Documentation: mm/memfd: vm.memfd_noexec

by jeffxu＠chromium.org

From: Jeff Xu <jeffxu(a)google.com> Add documentation for sysctl vm.memfd_noexec Link:https://lore.kernel.org/linux-mm/CABi2SkXUX_QqTQ10Yx9bBUGpN1wByOi_=gZU… Reported-by: Dominique Martinet <asmadeus(a)codewreck.org> Signed-off-by: Jeff Xu <jeffxu(a)google.com> --- Documentation/admin-guide/sysctl/vm.rst | 30 +++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/Documentation/admin-guide/sysctl/vm.rst b/Documentation/admin-guide/sysctl/vm.rst index 45ba1f4dc004..621588041a9e 100644 --- a/Documentation/admin-guide/sysctl/vm.rst +++ b/Documentation/admin-guide/sysctl/vm.rst @@ -424,6 +424,36 @@ e.g., up to one or two maps per allocation. The default value is 65530. +memfd_noexec: +============= +This pid namespaced sysctl controls memfd_create(). + +The new MFD_NOEXEC_SEAL and MFD_EXEC flags of memfd_create() allows +application to set executable bit at creation time. + +When MFD_NOEXEC_SEAL is set, memfd is created without executable bit +(mode:0666), and sealed with F_SEAL_EXEC, so it can't be chmod to +be executable (mode: 0777) after creation. + +when MFD_EXEC flag is set, memfd is created with executable bit +(mode:0777), this is the same as the old behavior of memfd_create. + +The new pid namespaced sysctl vm.memfd_noexec has 3 values: +0: memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL acts like + MFD_EXEC was set. +1: memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL acts like + MFD_NOEXEC_SEAL was set. +2: memfd_create() without MFD_NOEXEC_SEAL will be rejected. + +The default value is 0. + +Once set, it can't be downgraded at runtime, i.e. 2=>1, 1=>0 +are denied. + +This is pid namespaced sysctl, child processes inherit the parent +process's memfd_noexec at the time of fork. Changes to the parent +process after fork are not automatically propagated to the child +process. memory_failure_early_kill: ========================== -- 2.41.0.255.g8b1d071c50-goog

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