On 2026/7/22 19:19, Jiri Olsa wrote: > On Tue, Jul 21, 2026 at 09:30:34PM +0800, Leon Hwang wrote: >> The trampoline could be corrupted by the blindly >> 'tr->flags = BPF_TRAMP_F_TAIL_CALL_CTX' in verifier. >> >> 1. A fexit attached to a tail_call_reachable prog. >> 2. Another fexit loaded with the same tail_call_reachable prog target. >> 3. Close the first fexit link. > > had to ask ai for more details on how the warning was trigered ;-) > would be nice to have that info in the changelog
Ack. Will add the change of tr->flags. So, the detach failure would be obvious due to the incorrect tr->flags. > > Acked-by: Jiri Olsa <[email protected]> Thanks for your review. Leon > [...]
