diff options
| author | André Almeida <andrealmeid@igalia.com> | 2025-09-15 23:26:29 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2025-09-17 19:48:44 +0200 |
| commit | 2951dddef0a87c20e83c77070bd5077290d9121f (patch) | |
| tree | ea660b35da398f4cd7f0ec8576beec12de626806 | |
| parent | c1c863457780adfb2e29fa9a85897179ad3903e6 (diff) | |
selftest/futex: Reintroduce "Memory out of range" numa_mpol's subtest
Commit d8e2f919997 ("selftests/futex: Fix some futex_numa_mpol
subtests") removed the "Memory out of range" subtest due to it being
dependent on the memory layout of the test process having an invalid
memory address just after the `*futex_ptr` allocated memory.
Reintroduce this test and make it deterministic, by allocation two
memory pages and marking the second one with PROT_NONE.
Signed-off-by: André Almeida <andrealmeid@igalia.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Waiman Long <longman@redhat.com>
| -rw-r--r-- | tools/testing/selftests/futex/functional/futex_numa_mpol.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/testing/selftests/futex/functional/futex_numa_mpol.c b/tools/testing/selftests/futex/functional/futex_numa_mpol.c index dd7b05e8cda4..5f4e3111269c 100644 --- a/tools/testing/selftests/futex/functional/futex_numa_mpol.c +++ b/tools/testing/selftests/futex/functional/futex_numa_mpol.c @@ -174,10 +174,13 @@ int main(int argc, char *argv[]) ksft_set_plan(1); mem_size = sysconf(_SC_PAGE_SIZE); - futex_ptr = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0); + futex_ptr = mmap(NULL, mem_size * 2, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0); if (futex_ptr == MAP_FAILED) ksft_exit_fail_msg("mmap() for %d bytes failed\n", mem_size); + /* Create an invalid memory region for the "Memory out of range" test */ + mprotect(futex_ptr + mem_size, mem_size, PROT_NONE); + futex_numa = futex_ptr; ksft_print_msg("Regular test\n"); @@ -192,6 +195,9 @@ int main(int argc, char *argv[]) ksft_print_msg("Mis-aligned futex\n"); test_futex(futex_ptr + mem_size - 4, EINVAL); + ksft_print_msg("Memory out of range\n"); + test_futex(futex_ptr + mem_size, EFAULT); + futex_numa->numa = FUTEX_NO_NODE; mprotect(futex_ptr, mem_size, PROT_READ); ksft_print_msg("Memory, RO\n"); |