Re: [PATCH bpf-next v3 1/4] bpf: Show precise rejected function when attaching fexit/fmod_ret to __noreturn functions

On 7/22/25 8:34 AM, KaFai Wan wrote:

With this change, we know the precise rejected function name when attaching fexit/fmod_ret to __noreturn functions from log.

$ ./fexit libbpf: prog 'fexit': BPF program load failed: -EINVAL libbpf: prog 'fexit': -- BEGIN PROG LOAD LOG -- Attaching fexit/fmod_ret to __noreturn function 'do_exit' is rejected.

Suggested-by: Leon Hwang leon.hwang@linux.dev Signed-off-by: KaFai Wan kafai.wan@linux.dev

Acked-by: Yonghong Song yonghong.song@linux.dev