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| author | Alexei Starovoitov <ast@kernel.org> | 2023-03-14 02:58:44 +0300 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2023-03-14 09:08:21 +0300 |
| commit | 3e30be4288b31702d4898487a74e80ba14150a9f (patch) | |
| tree | 252cdcdb69d17ef0043c7f59882393bdf689817a /tools/perf/scripts/python/syscall-counts-by-pid.py | |
| parent | c9267aa8b794c2188d49c7d7bd2990e98b2d6b84 (diff) | |
| download | linux-3e30be4288b31702d4898487a74e80ba14150a9f.tar.xz | |
bpf: Allow helpers access trusted PTR_TO_BTF_ID.
The verifier rejects the code:
bpf_strncmp(task->comm, 16, "my_task");
with the message:
16: (85) call bpf_strncmp#182
R1 type=trusted_ptr_ expected=fp, pkt, pkt_meta, map_key, map_value, mem, ringbuf_mem, buf
Teach the verifier that such access pattern is safe.
Do not allow untrusted and legacy ptr_to_btf_id to be passed into helpers.
Reported-by: David Vernet <void@manifault.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/r/20230313235845.61029-3-alexei.starovoitov@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts-by-pid.py')
0 files changed, 0 insertions, 0 deletions