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| author | KaFai Wan <[email protected]> | 2025-07-24 15:14:52 +0000 |
|---|---|---|
| committer | Alexei Starovoitov <[email protected]> | 2025-07-29 02:39:29 +0000 |
| commit | 863aab3d4dcdfffa5cf0e0795c526dadca65be7a (patch) | |
| tree | a49b2b3392ba9d718b37b7781031a661383fa277 /drivers/pwm/pwm-mediatek.c | |
| parent | bpf: Show precise rejected function when attaching fexit/fmod_ret to __noretu... (diff) | |
| download | kernel-863aab3d4dcdfffa5cf0e0795c526dadca65be7a.tar.gz kernel-863aab3d4dcdfffa5cf0e0795c526dadca65be7a.zip | |
bpf: Add log for attaching tracing programs to functions in deny list
Show the rejected function name when attaching tracing programs to
functions in deny list.
With this change, we know why tracing programs can't attach to functions
like __rcu_read_lock() from log.
$ ./fentry
libbpf: prog '__rcu_read_lock': BPF program load failed: -EINVAL
libbpf: prog '__rcu_read_lock': -- BEGIN PROG LOAD LOG --
Attaching tracing programs to function '__rcu_read_lock' is rejected.
Suggested-by: Leon Hwang <[email protected]>
Signed-off-by: KaFai Wan <[email protected]>
Acked-by: Yafang Shao <[email protected]>
Acked-by: Yonghong Song <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>
Diffstat (limited to 'drivers/pwm/pwm-mediatek.c')
0 files changed, 0 insertions, 0 deletions