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| author | Yonghong Song <yonghong.song@linux.dev> | 2025-06-06 18:36:15 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2025-06-06 19:21:43 -0700 |
| commit | 377d3715900c1f465a5ea8a6a11bcbdc42b18668 (patch) | |
| tree | 0c1893cc584a0414b5a8b455d605aaa90c8f0f19 /tools | |
| parent | ae8824037a0ac550745b223aa3680819ed65e8db (diff) | |
| download | linux-377d3715900c1f465a5ea8a6a11bcbdc42b18668.tar.gz linux-377d3715900c1f465a5ea8a6a11bcbdc42b18668.zip | |
selftests/bpf: Fix bpf_mod_race test failure with arm64 64KB page size
Currently, uffd_register.range.len is set to 4096 for command
'ioctl(uffd, UFFDIO_REGISTER, &uffd_register)'. For arm64 64KB page size,
the len must be 64KB size aligned as page size alignment is required.
See fs/userfaultfd.c:validate_unaligned_range().
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20250607013615.1551783-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/bpf_mod_race.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_mod_race.c b/tools/testing/selftests/bpf/prog_tests/bpf_mod_race.c index fe2c502e5089..ecc3d47919ad 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_mod_race.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_mod_race.c @@ -78,7 +78,7 @@ static int test_setup_uffd(void *fault_addr) } uffd_register.range.start = (unsigned long)fault_addr; - uffd_register.range.len = 4096; + uffd_register.range.len = getpagesize(); uffd_register.mode = UFFDIO_REGISTER_MODE_MISSING; if (ioctl(uffd, UFFDIO_REGISTER, &uffd_register)) { close(uffd); |