January 2022 - Linux-kselftest-mirror

[GIT PULL] Kselftest update for Linux 5.17-rc1

by Shuah Khan

Hi Linus, Please pull the following Kselftest update for Linux 5.17-rc1 This Kselftest update for Linux 5.17-rc1 consists of fixes to build errors, false negatives, and several code cleanups, including the ARRAY_SIZE cleanup that removes 25+ duplicates ARRAY_SIZE defines from individual tests. diff is attached. thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit 0fcfb00b28c0b7884635dacf38e46d60bf3d4eb1: Linux 5.16-rc4 (2021-12-05 14:08:22 -0800) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux-kselftest-next-5.17-rc1 for you to fetch changes up to e89908201e2509354c40158b517945bf3d645812: selftests/vm: remove ARRAY_SIZE define from individual tests (2021-12-10 17:51:25 -0700) ---------------------------------------------------------------- linux-kselftest-next-5.17-rc1 This Kselftest update for Linux 5.17-rc1 consists of fixes to build errors, false negatives, and several code cleanups, including the ARRAY_SIZE cleanup that removes 25+ duplicates ARRAY_SIZE defines from individual tests. ---------------------------------------------------------------- Anders Roxell (2): selftests: clone3: clone3: add case CLONE3_ARGS_NO_TEST selftests: cgroup: build error multiple outpt files Heiko Carstens (1): selftests/ftrace: make kprobe profile testcase description unique Jakub Kicinski (1): selftests: harness: avoid false negatives if test has no ASSERTs Shuah Khan (12): tools: fix ARRAY_SIZE defines in tools and selftests hdrs selftests/arm64: remove ARRAY_SIZE define from vec-syscfg.c selftests/cgroup: remove ARRAY_SIZE define from cgroup_util.h selftests/core: remove ARRAY_SIZE define from close_range_test.c selftests/ir: remove ARRAY_SIZE define from ir_loopback.c selftests/landlock: remove ARRAY_SIZE define from common.h selftests/net: remove ARRAY_SIZE define from individual tests selftests/rseq: remove ARRAY_SIZE define from individual tests selftests/seccomp: remove ARRAY_SIZE define from seccomp_benchmark selftests/sparc64: remove ARRAY_SIZE define from adi-test selftests/timens: remove ARRAY_SIZE define from individual tests selftests/vm: remove ARRAY_SIZE define from individual tests Yang Guang (2): selftests/mount: remove unneeded conversion to bool selftests/move_mount_set_group remove unneeded conversion to bool Zhang Mingyu (2): kselftests: timers:Remove unneeded semicolon selftests: timers: Remove unneeded semicolon tools/include/linux/kernel.h | 2 ++ tools/testing/selftests/arm64/fp/vec-syscfg.c | 2 -- tools/testing/selftests/cgroup/Makefile | 12 +++++++----- tools/testing/selftests/cgroup/cgroup_util.h | 4 ++-- tools/testing/selftests/clone3/clone3.c | 6 ++++++ tools/testing/selftests/core/close_range_test.c | 4 ---- tools/testing/selftests/ftrace/test.d/kprobe/profile.tc | 2 +- tools/testing/selftests/ir/ir_loopback.c | 1 - tools/testing/selftests/kselftest.h | 4 ++++ tools/testing/selftests/kselftest_harness.h | 4 +++- tools/testing/selftests/landlock/common.h | 4 ---- tools/testing/selftests/lib.mk | 2 +- tools/testing/selftests/mount/unprivileged-remount-test.c | 4 ++-- .../move_mount_set_group/move_mount_set_group_test.c | 10 +++++----- tools/testing/selftests/net/gro.c | 3 ++- tools/testing/selftests/net/ipsec.c | 1 - tools/testing/selftests/net/reuseport_bpf.c | 4 +--- tools/testing/selftests/net/rxtimestamp.c | 2 +- tools/testing/selftests/net/socket.c | 3 ++- tools/testing/selftests/net/tcp_fastopen_backup_key.c | 6 ++---- tools/testing/selftests/rseq/basic_percpu_ops_test.c | 3 +-- tools/testing/selftests/rseq/rseq.c | 3 +-- tools/testing/selftests/seccomp/seccomp_benchmark.c | 2 +- tools/testing/selftests/sparc64/drivers/adi-test.c | 4 ---- tools/testing/selftests/timens/procfs.c | 2 -- tools/testing/selftests/timens/timens.c | 2 -- tools/testing/selftests/timers/alarmtimer-suspend.c | 2 +- tools/testing/selftests/timers/inconsistency-check.c | 2 +- tools/testing/selftests/vm/mremap_test.c | 1 - tools/testing/selftests/vm/pkey-helpers.h | 3 ++- tools/testing/selftests/vm/va_128TBswitch.c | 2 +- 31 files changed, 49 insertions(+), 57 deletions(-) ----------------------------------------------------------------

2 years, 11 months

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[GIT PULL] seccomp updates for v5.17-rc1

by Kees Cook

Hi Linus, Please pull these seccomp selftest updates for v5.17-rc1. The core seccomp code hasn't changed for this cycle, but the selftests were improved while helping to debug the recent signal handling refactoring work Eric did. Thanks! -Kees The following changes since commit d9bbdbf324cda23aa44873f505be77ed4b61d79c: x86: deduplicate the spectre_v2_user documentation (2021-10-04 12:12:57 -0700) are available in the Git repository at: https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git tags/seccomp-v5.17-rc1 for you to fetch changes up to 1e6d69c7b9cd7735bbf4c6754ccbb9cce8bd8ff4: selftests/seccomp: Report event mismatches more clearly (2021-11-03 12:02:07 -0700) ---------------------------------------------------------------- seccomp updates for v5.17-rc1 - Improve seccomp selftests in support of signal handler refactoring (Kees Cook) ---------------------------------------------------------------- Kees Cook (2): selftests/seccomp: Stop USER_NOTIF test if kcmp() fails selftests/seccomp: Report event mismatches more clearly tools/testing/selftests/seccomp/seccomp_bpf.c | 56 ++++++++++++++++++++++++--- 1 file changed, 50 insertions(+), 6 deletions(-) -- Kees Cook

2 years, 11 months

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[RFC PATCH v2 2/2] selftests: rseq: test abort-at-ip extension on x86

by Mathieu Desnoyers

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Cc: Shuah Khan <shuah(a)kernel.org> Cc: linux-kselftest(a)vger.kernel.org --- tools/testing/selftests/rseq/.gitignore | 1 + tools/testing/selftests/rseq/Makefile | 3 +- tools/testing/selftests/rseq/rseq.c | 21 ++ tools/testing/selftests/rseq/rseq.h | 12 + .../selftests/rseq/rseq_ext_abort_at_ip.c | 285 ++++++++++++++++++ 5 files changed, 321 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/rseq/rseq_ext_abort_at_ip.c diff --git a/tools/testing/selftests/rseq/.gitignore b/tools/testing/selftests/rseq/.gitignore index 5910888ebfe1..472152afab77 100644 --- a/tools/testing/selftests/rseq/.gitignore +++ b/tools/testing/selftests/rseq/.gitignore @@ -5,3 +5,4 @@ basic_rseq_op_test param_test param_test_benchmark param_test_compare_twice +rseq_ext_abort_at_ip diff --git a/tools/testing/selftests/rseq/Makefile b/tools/testing/selftests/rseq/Makefile index 2af9d39a9716..dae0dba7552b 100644 --- a/tools/testing/selftests/rseq/Makefile +++ b/tools/testing/selftests/rseq/Makefile @@ -13,7 +13,8 @@ LDLIBS += -lpthread OVERRIDE_TARGETS = 1 TEST_GEN_PROGS = basic_test basic_percpu_ops_test param_test \ - param_test_benchmark param_test_compare_twice + param_test_benchmark param_test_compare_twice \ + rseq_ext_abort_at_ip TEST_GEN_PROGS_EXTENDED = librseq.so diff --git a/tools/testing/selftests/rseq/rseq.c b/tools/testing/selftests/rseq/rseq.c index 7159eb777fd3..3e012f581ddb 100644 --- a/tools/testing/selftests/rseq/rseq.c +++ b/tools/testing/selftests/rseq/rseq.c @@ -73,6 +73,27 @@ static int sys_rseq(volatile struct rseq *rseq_abi, uint32_t rseq_len, return syscall(__NR_rseq, rseq_abi, rseq_len, flags, sig); } +/* + * Return 0 if extension is available, negative error otherwise. + */ +int rseq_query_extension(enum rseq_extension ext) +{ + int ret; + unsigned int flags; + + switch (ext) { + case RSEQ_EXT_ABORT_AT_IP: + flags = RSEQ_FLAG_QUERY_ABORT_AT_IP; + break; + default: + return -EINVAL; + } + ret = sys_rseq(NULL, 0, flags, 0); + if (!ret) + return 0; + return -errno; +} + int rseq_register_current_thread(void) { int rc, ret = 0; diff --git a/tools/testing/selftests/rseq/rseq.h b/tools/testing/selftests/rseq/rseq.h index 3f63eb362b92..34c80402c078 100644 --- a/tools/testing/selftests/rseq/rseq.h +++ b/tools/testing/selftests/rseq/rseq.h @@ -67,6 +67,12 @@ extern int __rseq_handled; abort(); \ } while (0) +enum rseq_extension { + RSEQ_EXT_ABORT_AT_IP = 0, +}; + +#define ASM_RSEQ_CS_FLAG_ABORT_AT_IP (1U << 3) + #if defined(__x86_64__) || defined(__i386__) #include <rseq-x86.h> #elif defined(__ARMEL__) @@ -162,4 +168,10 @@ static inline void rseq_prepare_unload(void) rseq_clear_rseq_cs(); } +/* + * Query whether rseq extension is available. Return 0 if available, negative + * error value otherwise. + */ +int rseq_query_extension(enum rseq_extension ext); + #endif /* RSEQ_H_ */ diff --git a/tools/testing/selftests/rseq/rseq_ext_abort_at_ip.c b/tools/testing/selftests/rseq/rseq_ext_abort_at_ip.c new file mode 100644 index 000000000000..4cddf7433cc3 --- /dev/null +++ b/tools/testing/selftests/rseq/rseq_ext_abort_at_ip.c @@ -0,0 +1,285 @@ +// SPDX-License-Identifier: LGPL-2.1 +/* + * RSEQ abort-at-ip extension test. + * + * The test test_abort_at_ip_loop() implements an infinite loop which only exits when + * aborted. This rseq critical section is defined with the abort-at-ip + * extension, which requires the userspace abort handler to reajust the stack pointer. + * This test validates that the abort-at-ip value is within the address range of the + * rseq critical section. + * + * The test test_abort_at_ip_undo() validates that when aborted between two + * consecutive increments of two distinct variables, those variables are indeed one + * value apart. This validates that abort undo operations based on the abort-at-ip + * work as expected. + */ + +#define _GNU_SOURCE +#include <assert.h> +#include <sched.h> +#include <signal.h> +#include <stdio.h> +#include <string.h> +#include <sys/time.h> + +#include "rseq.h" + +const int nr_iter = 10; + +#ifdef __x86_64__ +static void test_abort_at_ip_loop(void) +{ + void *abort_ip_addr, *abort_ip_start, *abort_ip_end; + + printf("Testing abort_at_ip infinite loop\n"); + + __asm__ __volatile__ goto ( + __RSEQ_ASM_DEFINE_TABLE(3, 0x0, ASM_RSEQ_CS_FLAG_ABORT_AT_IP, 1f, (2f - 1f), 4f) /* start, post_commit_offset, abort */ + /* Start rseq by storing table entry pointer into rseq_cs. */ + RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_CS_OFFSET(%[rseq_abi])) + "rep; nop\n\t" /* cpu_relax for busy loop. */ + "jmp 1b\n\t" /* infinite loop. */ + "2:\n\t" + RSEQ_ASM_DEFINE_ABORT(4, + /* abort-at-ip must be pop from the stack. */ + "popq %%rcx\n\t" + "addq $128, %%rsp\n\t" /* x86-64 redzone */ + "movq %%rcx, %[abort_ip_addr]\n\t" + "lea 1b(%%rip), %%rcx\n\t" + "movq %%rcx, %[abort_ip_start]\n\t" + "lea 2b(%%rip), %%rcx\n\t" + "movq %%rcx, %[abort_ip_end]\n\t", + abort) + : /* gcc asm goto does not allow outputs */ + : [rseq_abi] "r" (&__rseq_abi), + [abort_ip_addr] "m" (abort_ip_addr), + [abort_ip_start] "m" (abort_ip_start), + [abort_ip_end] "m" (abort_ip_end) + : "memory", "cc", "rcx" + : abort + ); + fprintf(stderr, "Error: infinite loop should never exit gracefully.\n"); + abort(); + +abort: + printf("Critical section aborted (as expected) at ip %p, within range [%p,%p[\n", + abort_ip_addr, abort_ip_start, abort_ip_end); + if (abort_ip_addr < abort_ip_start || abort_ip_addr >= abort_ip_end) { + fprintf(stderr, "Error: abort-ip is outside of expected range\n"); + abort(); + } +} + +static void test_abort_at_ip_undo(void) +{ + void *abort_ip_addr, *abort_ip_start, *abort_ip_end, *ip_after_first_inc, *ip_after_second_inc; + unsigned long v[2] = { 0, 0 }; + + printf("Testing abort_at_ip undo\n"); + + __asm__ __volatile__ goto ( + __RSEQ_ASM_DEFINE_TABLE(3, 0x0, ASM_RSEQ_CS_FLAG_ABORT_AT_IP, 1f, (2f - 1f), 4f) /* start, post_commit_offset, abort */ + /* Start rseq by storing table entry pointer into rseq_cs. */ + RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_CS_OFFSET(%[rseq_abi])) + "incq %[v0]\n\t" + "10:\n\t" + "rep; nop\n\t" + "incq %[v1]\n\t" + "20:\n\t" + "rep; nop\n\t" + "jmp 1b\n\t" /* infinite loop. */ + "2:\n\t" + RSEQ_ASM_DEFINE_ABORT(4, + /* abort-at-ip must be pop from the stack. */ + "popq %%rcx\n\t" + "addq $128, %%rsp\n\t" /* x86-64 redzone */ + "movq %%rcx, %[abort_ip_addr]\n\t" + "lea 1b(%%rip), %%rcx\n\t" + "movq %%rcx, %[abort_ip_start]\n\t" + "lea 2b(%%rip), %%rcx\n\t" + "movq %%rcx, %[abort_ip_end]\n\t" + "lea 10b(%%rip), %%rcx\n\t" + "movq %%rcx, %[ip_after_first_inc]\n\t" + "lea 20b(%%rip), %%rcx\n\t" + "movq %%rcx, %[ip_after_second_inc]\n\t", + abort) + : /* gcc asm goto does not allow outputs */ + : [rseq_abi] "r" (&__rseq_abi), + [abort_ip_addr] "m" (abort_ip_addr), + [abort_ip_start] "m" (abort_ip_start), + [abort_ip_end] "m" (abort_ip_end), + [ip_after_first_inc] "m" (ip_after_first_inc), + [ip_after_second_inc] "m" (ip_after_second_inc), + [v0] "m" (v[0]), + [v1] "m" (v[1]) + : "memory", "cc", "rcx" + : abort + ); + fprintf(stderr, "Error: infinite loop should never exit gracefully.\n"); + abort(); + +abort: + printf("Critical section aborted (as expected) at ip %p, within range [%p,%p[\n", + abort_ip_addr, abort_ip_start, abort_ip_end); + if (abort_ip_addr < abort_ip_start || abort_ip_addr >= abort_ip_end) { + fprintf(stderr, "Error: abort-ip is outside of expected range\n"); + abort(); + } + printf("ip after first inc: %p, ip after second inc: %p\n", + ip_after_first_inc, ip_after_second_inc); + printf("Counter values: v0: %lu v1: %lu\n", v[0], v[1]); + if (abort_ip_addr < ip_after_first_inc || abort_ip_addr >= ip_after_second_inc) { + if (v[0] != v[1]) + abort(); + } else { + if (v[0] != v[1] + 1) + abort(); + } +} +#elif defined (__i386__) +static void test_abort_at_ip_loop(void) +{ + void *abort_ip_addr, *abort_ip_start, *abort_ip_end; + + printf("Testing abort_at_ip infinite loop\n"); + + __asm__ __volatile__ goto ( + __RSEQ_ASM_DEFINE_TABLE(3, 0x0, ASM_RSEQ_CS_FLAG_ABORT_AT_IP, 1f, (2f - 1f), 4f) /* start, post_commit_offset, abort */ + /* Start rseq by storing table entry pointer into rseq_cs. */ + RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_CS_OFFSET(%[rseq_abi])) + "rep; nop\n\t" /* cpu_relax for busy loop. */ + "jmp 1b\n\t" /* infinite loop. */ + "2:\n\t" + RSEQ_ASM_DEFINE_ABORT(4, + /* abort-at-ip must be pop from the stack. */ + "popl %%ecx\n\t" + "movl %%ecx, %[abort_ip_addr]\n\t" + "movl $1b, %%ecx\n\t" + "movl %%ecx, %[abort_ip_start]\n\t" + "movl $2b, %%ecx\n\t" + "movl %%ecx, %[abort_ip_end]\n\t", + abort) + : /* gcc asm goto does not allow outputs */ + : [rseq_abi] "r" (&__rseq_abi), + [abort_ip_addr] "m" (abort_ip_addr), + [abort_ip_start] "m" (abort_ip_start), + [abort_ip_end] "m" (abort_ip_end) + : "memory", "cc", "ecx" + : abort + ); + fprintf(stderr, "Error: infinite loop should never exit gracefully.\n"); + abort(); + +abort: + printf("Critical section aborted (as expected) at ip %p, within range [%p,%p[\n", + abort_ip_addr, abort_ip_start, abort_ip_end); + if (abort_ip_addr < abort_ip_start || abort_ip_addr >= abort_ip_end) { + fprintf(stderr, "Error: abort-ip is outside of expected range\n"); + abort(); + } +} + +static void test_abort_at_ip_undo(void) +{ + void *abort_ip_addr, *abort_ip_start, *abort_ip_end, *ip_after_first_inc, *ip_after_second_inc; + unsigned long v[2] = { 0, 0 }; + + printf("Testing abort_at_ip undo\n"); + + __asm__ __volatile__ goto ( + __RSEQ_ASM_DEFINE_TABLE(3, 0x0, ASM_RSEQ_CS_FLAG_ABORT_AT_IP, 1f, (2f - 1f), 4f) /* start, post_commit_offset, abort */ + /* Start rseq by storing table entry pointer into rseq_cs. */ + RSEQ_ASM_STORE_RSEQ_CS(1, 3b, RSEQ_CS_OFFSET(%[rseq_abi])) + "incl %[v0]\n\t" + "10:\n\t" + "rep; nop\n\t" + "incl %[v1]\n\t" + "20:\n\t" + "rep; nop\n\t" + "jmp 1b\n\t" /* infinite loop. */ + "2:\n\t" + RSEQ_ASM_DEFINE_ABORT(4, + /* abort-at-ip must be pop from the stack. */ + "popl %%ecx\n\t" + "movl %%ecx, %[abort_ip_addr]\n\t" + "movl $1b, %%ecx\n\t" + "movl %%ecx, %[abort_ip_start]\n\t" + "movl $2b, %%ecx\n\t" + "movl %%ecx, %[abort_ip_end]\n\t" + "movl $10b, %%ecx\n\t" + "movl %%ecx, %[ip_after_first_inc]\n\t" + "movl $20b, %%ecx\n\t" + "movl %%ecx, %[ip_after_second_inc]\n\t", + abort) + : /* gcc asm goto does not allow outputs */ + : [rseq_abi] "r" (&__rseq_abi), + [abort_ip_addr] "m" (abort_ip_addr), + [abort_ip_start] "m" (abort_ip_start), + [abort_ip_end] "m" (abort_ip_end), + [ip_after_first_inc] "m" (ip_after_first_inc), + [ip_after_second_inc] "m" (ip_after_second_inc), + [v0] "m" (v[0]), + [v1] "m" (v[1]) + : "memory", "cc", "rcx" + : abort + ); + fprintf(stderr, "Error: infinite loop should never exit gracefully.\n"); + abort(); + +abort: + printf("Critical section aborted (as expected) at ip %p, within range [%p,%p[\n", + abort_ip_addr, abort_ip_start, abort_ip_end); + if (abort_ip_addr < abort_ip_start || abort_ip_addr >= abort_ip_end) { + fprintf(stderr, "Error: abort-ip is outside of expected range\n"); + abort(); + } + printf("ip after first inc: %p, ip after second inc: %p\n", + ip_after_first_inc, ip_after_second_inc); + printf("Counter values: v0: %lu v1: %lu\n", v[0], v[1]); + if (abort_ip_addr < ip_after_first_inc || abort_ip_addr >= ip_after_second_inc) { + if (v[0] != v[1]) + abort(); + } else { + if (v[0] != v[1] + 1) + abort(); + } +} +#else +static void test_abort_at_ip_loop(void) +{ + abort(); +} +static void test_abort_at_ip_undo(void) +{ + abort(); +} +#endif + +int main(int argc, char **argv) +{ + int i; + + if (rseq_register_current_thread()) { + fprintf(stderr, "Error: rseq_register_current_thread(...) failed(%d): %s\n", + errno, strerror(errno)); + goto init_thread_error; + } + printf("testing abort-at-ip extension\n"); + if (rseq_query_extension(RSEQ_EXT_ABORT_AT_IP) != 0) { + fprintf(stderr, "RSEQ abort-at-ip extension is not supported, skipping test.\n"); + return 0; + } + for (i = 0; i < nr_iter; i++) + test_abort_at_ip_loop(); + for (i = 0; i < nr_iter; i++) + test_abort_at_ip_undo(); + if (rseq_unregister_current_thread()) { + fprintf(stderr, "Error: rseq_unregister_current_thread(...) failed(%d): %s\n", + errno, strerror(errno)); + goto init_thread_error; + } + return 0; + +init_thread_error: + return -1; +} -- 2.17.1

2 years, 11 months

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2 years, 11 months

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2 years, 11 months

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[PATCH] Documentation: kunit: Fix typo

by Qinghua Jin

Fix a typo: actualy -> actual Signed-off-by: Qinghua Jin <qhjin.dev(a)gmail.com> --- Documentation/dev-tools/kunit/usage.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/dev-tools/kunit/usage.rst b/Documentation/dev-tools/kunit/usage.rst index 63f1bb89ebf5..b9940758787c 100644 --- a/Documentation/dev-tools/kunit/usage.rst +++ b/Documentation/dev-tools/kunit/usage.rst @@ -615,7 +615,7 @@ kunit_tool) only fully supports running tests inside of UML and QEMU; however, this is only due to our own time limitations as humans working on KUnit. It is entirely possible to support other emulators and even actual hardware, but for now QEMU and UML is what is fully supported within the KUnit Wrapper. Again, to -be clear, this is just the Wrapper. The actualy KUnit tests and the KUnit +be clear, this is just the Wrapper. The actual KUnit tests and the KUnit library they are written in is fully architecture agnostic and can be used in virtually any setup, you just won't have the benefit of typing a single command out of the box and having everything magically work perfectly. -- 2.30.2

2 years, 11 months

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[PATCH v5 net-next 0/3] net: bpf: handle return value of post_bind{4,6} and add selftests for it

by menglong8.dong＠gmail.com

From: Menglong Dong <imagedong(a)tencent.com> The return value of BPF_CGROUP_RUN_PROG_INET{4,6}_POST_BIND() in __inet_bind() is not handled properly. While the return value is non-zero, it will set inet_saddr and inet_rcv_saddr to 0 and exit: exit: err = BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk); if (err) { inet->inet_saddr = inet->inet_rcv_saddr = 0; goto out_release_sock; } Let's take UDP for example and see what will happen. For UDP socket, it will be added to 'udp_prot.h.udp_table->hash' and 'udp_prot.h.udp_table->hash2' after the sk->sk_prot->get_port() called success. If 'inet->inet_rcv_saddr' is specified here, then 'sk' will be in the 'hslot2' of 'hash2' that it don't belong to (because inet_saddr is changed to 0), and UDP packet received will not be passed to this sock. If 'inet->inet_rcv_saddr' is not specified here, the sock will work fine, as it can receive packet properly, which is wired, as the 'bind()' is already failed. To undo the get_port() operation, introduce the 'put_port' field for 'struct proto'. For TCP proto, it is inet_put_port(); For UDP proto, it is udp_lib_unhash(); For icmp proto, it is ping_unhash(). Therefore, after sys_bind() fail caused by BPF_CGROUP_RUN_PROG_INET4_POST_BIND(), it will be unbinded, which means that it can try to be binded to another port. The second patch use C99 initializers in test_sock.c The third patch is the selftests for this modification. Changes since v4: - use C99 initializers in test_sock.c before adding the test case Changes since v3: - add the third patch which use C99 initializers in test_sock.c Changes since v2: - NULL check for sk->sk_prot->put_port Changes since v1: - introduce 'put_port' field for 'struct proto' - add selftests for it Menglong Dong (3): net: bpf: handle return value of BPF_CGROUP_RUN_PROG_INET{4,6}_POST_BIND() bpf: selftests: use C99 initializers in test_sock.c bpf: selftests: add bind retry for post_bind{4, 6} include/net/sock.h | 1 + net/ipv4/af_inet.c | 2 + net/ipv4/ping.c | 1 + net/ipv4/tcp_ipv4.c | 1 + net/ipv4/udp.c | 1 + net/ipv6/af_inet6.c | 2 + net/ipv6/ping.c | 1 + net/ipv6/tcp_ipv6.c | 1 + net/ipv6/udp.c | 1 + tools/testing/selftests/bpf/test_sock.c | 370 ++++++++++++++---------- 10 files changed, 233 insertions(+), 148 deletions(-) -- 2.27.0

2 years, 11 months

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[PATCH] selftests/vm: Make charge_reserved_hugetlb.sh work with existing cgroup setting

by Waiman Long

The hugetlb cgroup reservation test charge_reserved_hugetlb.sh assume that no cgroup filesystems are mounted before running the test. That is not true in many cases. As a result, the test fails to run. Fix that by querying the current cgroup mount setting and using the existing cgroup setup instead before attempting to freshly mount a cgroup filesystem. Similar change is also made for hugetlb_reparenting_test.sh as well, though it still has problem if cgroup v2 isn't used. The patched test scripts were run on a centos 8 based system to verify that they ran properly. Fixes: 29750f71a9b4 ("hugetlb_cgroup: add hugetlb_cgroup reservation tests") Signed-off-by: Waiman Long <longman(a)redhat.com> --- .../selftests/vm/charge_reserved_hugetlb.sh | 34 +++++++++++-------- .../selftests/vm/hugetlb_reparenting_test.sh | 21 +++++++----- .../selftests/vm/write_hugetlb_memory.sh | 2 +- 3 files changed, 34 insertions(+), 23 deletions(-) mode change 100644 => 100755 tools/testing/selftests/vm/charge_reserved_hugetlb.sh mode change 100644 => 100755 tools/testing/selftests/vm/hugetlb_reparenting_test.sh mode change 100644 => 100755 tools/testing/selftests/vm/write_hugetlb_memory.sh diff --git a/tools/testing/selftests/vm/charge_reserved_hugetlb.sh b/tools/testing/selftests/vm/charge_reserved_hugetlb.sh old mode 100644 new mode 100755 index fe8fcfb334e0..a5cb4b09a46c --- a/tools/testing/selftests/vm/charge_reserved_hugetlb.sh +++ b/tools/testing/selftests/vm/charge_reserved_hugetlb.sh @@ -24,19 +24,23 @@ if [[ "$1" == "-cgroup-v2" ]]; then reservation_usage_file=rsvd.current fi -cgroup_path=/dev/cgroup/memory -if [[ ! -e $cgroup_path ]]; then - mkdir -p $cgroup_path - if [[ $cgroup2 ]]; then +if [[ $cgroup2 ]]; then + cgroup_path=$(mount -t cgroup2 | head -1 | awk -e '{print $3}') + if [[ -z "$cgroup_path" ]]; then + cgroup_path=/dev/cgroup/memory mount -t cgroup2 none $cgroup_path - else + do_umount=1 + fi + echo "+hugetlb" >$cgroup_path/cgroup.subtree_control +else + cgroup_path=$(mount -t cgroup | grep ",hugetlb" | awk -e '{print $3}') + if [[ -z "$cgroup_path" ]]; then + cgroup_path=/dev/cgroup/memory mount -t cgroup memory,hugetlb $cgroup_path + do_umount=1 fi fi - -if [[ $cgroup2 ]]; then - echo "+hugetlb" >/dev/cgroup/memory/cgroup.subtree_control -fi +export cgroup_path function cleanup() { if [[ $cgroup2 ]]; then @@ -108,7 +112,7 @@ function setup_cgroup() { function wait_for_hugetlb_memory_to_get_depleted() { local cgroup="$1" - local path="/dev/cgroup/memory/$cgroup/hugetlb.${MB}MB.$reservation_usage_file" + local path="$cgroup_path/$cgroup/hugetlb.${MB}MB.$reservation_usage_file" # Wait for hugetlbfs memory to get depleted. while [ $(cat $path) != 0 ]; do echo Waiting for hugetlb memory to get depleted. @@ -121,7 +125,7 @@ function wait_for_hugetlb_memory_to_get_reserved() { local cgroup="$1" local size="$2" - local path="/dev/cgroup/memory/$cgroup/hugetlb.${MB}MB.$reservation_usage_file" + local path="$cgroup_path/$cgroup/hugetlb.${MB}MB.$reservation_usage_file" # Wait for hugetlbfs memory to get written. while [ $(cat $path) != $size ]; do echo Waiting for hugetlb memory reservation to reach size $size. @@ -134,7 +138,7 @@ function wait_for_hugetlb_memory_to_get_written() { local cgroup="$1" local size="$2" - local path="/dev/cgroup/memory/$cgroup/hugetlb.${MB}MB.$fault_usage_file" + local path="$cgroup_path/$cgroup/hugetlb.${MB}MB.$fault_usage_file" # Wait for hugetlbfs memory to get written. while [ $(cat $path) != $size ]; do echo Waiting for hugetlb memory to reach size $size. @@ -574,5 +578,7 @@ for populate in "" "-o"; do done # populate done # method -umount $cgroup_path -rmdir $cgroup_path +if [[ $do_umount ]]; then + umount $cgroup_path + rmdir $cgroup_path +fi diff --git a/tools/testing/selftests/vm/hugetlb_reparenting_test.sh b/tools/testing/selftests/vm/hugetlb_reparenting_test.sh old mode 100644 new mode 100755 index 4a9a3afe9fd4..bf2d2a684edf --- a/tools/testing/selftests/vm/hugetlb_reparenting_test.sh +++ b/tools/testing/selftests/vm/hugetlb_reparenting_test.sh @@ -18,19 +18,24 @@ if [[ "$1" == "-cgroup-v2" ]]; then usage_file=current fi -CGROUP_ROOT='/dev/cgroup/memory' -MNT='/mnt/huge/' -if [[ ! -e $CGROUP_ROOT ]]; then - mkdir -p $CGROUP_ROOT - if [[ $cgroup2 ]]; then +if [[ $cgroup2 ]]; then + CGROUP_ROOT=$(mount -t cgroup2 | head -1 | awk -e '{print $3}') + if [[ -z "$CGROUP_ROOT" ]]; then + CGROUP_ROOT=/dev/cgroup/memory mount -t cgroup2 none $CGROUP_ROOT - sleep 1 - echo "+hugetlb +memory" >$CGROUP_ROOT/cgroup.subtree_control - else + do_umount=1 + fi + echo "+hugetlb +memory" >$CGROUP_ROOT/cgroup.subtree_control +else + CGROUP_ROOT=$(mount -t cgroup | grep ",hugetlb" | awk -e '{print $3}') + if [[ -z "$CGROUP_ROOT" ]]; then + CGROUP_ROOT=/dev/cgroup/memory mount -t cgroup memory,hugetlb $CGROUP_ROOT + do_umount=1 fi fi +MNT='/mnt/huge/' function get_machine_hugepage_size() { hpz=$(grep -i hugepagesize /proc/meminfo) diff --git a/tools/testing/selftests/vm/write_hugetlb_memory.sh b/tools/testing/selftests/vm/write_hugetlb_memory.sh old mode 100644 new mode 100755 index d3d0d108924d..70a02301f4c2 --- a/tools/testing/selftests/vm/write_hugetlb_memory.sh +++ b/tools/testing/selftests/vm/write_hugetlb_memory.sh @@ -14,7 +14,7 @@ want_sleep=$8 reserve=$9 echo "Putting task in cgroup '$cgroup'" -echo $$ > /dev/cgroup/memory/"$cgroup"/cgroup.procs +echo $$ > ${cgroup_path:-/dev/cgroup/memory}/"$cgroup"/cgroup.procs echo "Method is $method" -- 2.27.0

2 years, 11 months

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txtimestamp.c:164:29: warning: format '0' expects argument of type 'long unsigned int', but argument 3 has type 'int64_t' {aka 'long long int'} [-Wformat=]

by Naresh Kamboju

While building selftests the following warnings were noticed for arm architecture on Linux stable v5.15.13 kernel and also on Linus's tree. arm-linux-gnueabihf-gcc -Wall -Wl,--no-as-needed -O2 -g -I../../../../usr/include/ txtimestamp.c -o /home/tuxbuild/.cache/tuxmake/builds/current/kselftest/net/txtimestamp txtimestamp.c: In function 'validate_timestamp': txtimestamp.c:164:29: warning: format '0' expects argument of type 'long unsigned int', but argument 3 has type 'int64_t' {aka 'long long int'} [-Wformat=] 164 | fprintf(stderr, "ERROR: 0 us expected between 0 and 0\n", | ~~^ | | | long unsigned int | 0 165 | cur64 - start64, min_delay, max_delay); | ~~~~~~~~~~~~~~~ | | | int64_t {aka long long int} txtimestamp.c: In function '__print_ts_delta_formatted': txtimestamp.c:173:22: warning: format '0' expects argument of type 'long unsigned int', but argument 3 has type 'int64_t' {aka 'long long int'} [-Wformat=] 173 | fprintf(stderr, "0 ns", ts_delta); | ~~^ ~~~~~~~~ | | | | | int64_t {aka long long int} | long unsigned int | 0 txtimestamp.c:175:22: warning: format '0' expects argument of type 'long unsigned int', but argument 3 has type 'int64_t' {aka 'long long int'} [-Wformat=] 175 | fprintf(stderr, "0 us", ts_delta / NSEC_PER_USEC); | ~~^ | | | long unsigned int | 0 Reported-by: Linux Kernel Functional Testing <lkft(a)linaro.org> build link: https://builds.tuxbuild.com/23HFntxpqyCx0RbiuadfGZ36Kym/ metadata: git repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git git commit: 734eb1fd2073f503f5c6b44f1c0d453ca6986b84 git describe: v5.15.13 toolchain: gcc-11 kernel-config: https://builds.tuxbuild.com/23HFntxpqyCx0RbiuadfGZ36Kym/config # To install tuxmake on your system globally: # sudo pip3 install -U tuxmake tuxmake --runtime podman --target-arch arm --toolchain gcc-10 \ --kconfig https://builds.tuxbuild.com/23HFntxpqyCx0RbiuadfGZ36Kym/config \ dtbs dtbs-legacy headers kernel kselftest kselftest-merge modules -- Linaro LKFT https://lkft.linaro.org

2 years, 11 months

2
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test_vsyscall.c:500:22: warning: '__builtin_memcmp_eq' specified bound 4096 exceeds source size 0

by Naresh Kamboju

While building selftests the following warnings were noticed for x86_64 architecture on Linux stable v5.15.13 kernel. metadata: git repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git git commit: 734eb1fd2073f503f5c6b44f1c0d453ca6986b84 git describe: v5.15.13 toolchain": gcc-11 kernel-config: https://builds.tuxbuild.com/23HFo8abXIL6i4FFfSYiJlqAYMW/config x86_64-linux-gnu-gcc -m64 -o \ /home/tuxbuild/.cache/tuxmake/builds/current/kselftest/x86/test_vsyscall_64 \ -O2 -g -std=gnu99 -pthread -Wall -no-pie \ -DCAN_BUILD_64 test_vsyscall.c helpers.h -lrt -ldl test_vsyscall.c: In function 'test_process_vm_readv': test_vsyscall.c:500:22: warning: '__builtin_memcmp_eq' specified bound 4096 exceeds source size 0 [-Wstringop-overread] 500 | if (!memcmp(buf, (const void *)0xffffffffff600000, 4096)) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Reported-by: Linux Kernel Functional Testing <lkft(a)linaro.org> Build link: https://builds.tuxbuild.com/23HFo8abXIL6i4FFfSYiJlqAYMW/ # To install tuxmake on your system globally: # sudo pip3 install -U tuxmake tuxmake --runtime podman --target-arch x86_64 --toolchain gcc-11 \ --kconfig https://builds.tuxbuild.com/23HFo8abXIL6i4FFfSYiJlqAYMW/config \ cpupower headers kernel kselftest kselftest-merge modules -- Linaro LKFT https://lkft.linaro.org

2 years, 11 months

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