Re: [PATCH bpf-next v3 3/6] bpf: fix the usage of BPF_TRAMP_F_SKIP_FRAME
From: Andreas Schwab <hidden>
Date: 2025-12-19 14:50:33
Also in:
bpf, linux-riscv, lkml
On Dez 19 2025, Menglong Dong wrote:
quoted hunk
@@ -1171,6 +1167,8 @@ static int __arch_prepare_bpf_trampoline(structbpf_tramp_image *im, } if (flags & BPF_TRAMP_F_CALL_ORIG) { + /* skip to actual body of traced function */ + orig_call += RV_FENTRY_NINSNS * 4;
Before this line, orig_call still contains the same value as func_addr, with the latter being dead, so there is not much point in using a copy. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."