Re: [PATCH bpf] bpf: handle the return of ftrace_set_filter_ip in register_fentry

[Song Liu]

On Mon, Nov 10, 2025 at 4:07 AM Menglong Dong <menglong8.dong@xxxxxxxxx> wrote:
>
> The error that returned by ftrace_set_filter_ip() in register_fentry() is
> not handled properly. Just fix it.
>
> Fixes: 00963a2e75a8 ("bpf: Support bpf_trampoline on functions with IPMODIFY (e.g. livepatch)")
> Signed-off-by: Menglong Dong <dongml2@xxxxxxxxxxxxxxx>
> ---
>  kernel/bpf/trampoline.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)

LGTM. Thanks for the fix!

Acked-by: Song Liu <song@xxxxxxxxxx>

Can we add a test for this code path?

Song