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| author | Daniel Xu <dxu@dxuuu.xyz> | 2020-11-17 23:05:46 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-11-19 22:58:15 +0300 |
| commit | c8a36aedf3e24768e94d87fdcdd37684bd241c44 (patch) | |
| tree | 5eadde2770ff55b99a77d39e56e9b3dc322ce628 /kernel/gen_kheaders.sh | |
| parent | 6fa6d28051e9fcaa1570e69648ea13a353a5d218 (diff) | |
| download | linux-c8a36aedf3e24768e94d87fdcdd37684bd241c44.tar.xz | |
selftest/bpf: Test bpf_probe_read_user_str() strips trailing bytes after NUL
Previously, bpf_probe_read_user_str() could potentially overcopy the
trailing bytes after the NUL due to how do_strncpy_from_user() does the
copy in long-sized strides. The issue has been fixed in the previous
commit.
This commit adds a selftest that ensures we don't regress
bpf_probe_read_user_str() again.
Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/4d977508fab4ec5b7b574b85bdf8b398868b6ee9.1605642949.git.dxu@dxuuu.xyz
Diffstat (limited to 'kernel/gen_kheaders.sh')
0 files changed, 0 insertions, 0 deletions