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bpf: fix the usage of BPF_TRAMP_F_SKIP_FRAME

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Some places calculate the origin_call by checking if
BPF_TRAMP_F_SKIP_FRAME is set. However, it should use
BPF_TRAMP_F_ORIG_STACK for this propose. Just fix them.

Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/r/20251118123639.688444-4-dongml2@chinatelecom.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Menglong Dong
2025-11-18 20:36:31 +08:00
committed by Alexei Starovoitov
parent 0c3772a8db
commit 47c9214dcb
2 changed files with 2 additions and 2 deletions
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2
arch/riscv/net/bpf_jit_comp64.c
View File

@@ -1131,7 +1131,7 @@ static int __arch_prepare_bpf_trampoline(struct bpf_tramp_image *im,
store_args(nr_arg_slots, args_off, ctx);
/* skip to actual body of traced function */
if (flags & BPF_TRAMP_F_SKIP_FRAME)
if (flags & BPF_TRAMP_F_ORIG_STACK)
orig_call += RV_FENTRY_NINSNS * 4;
if (flags & BPF_TRAMP_F_CALL_ORIG) {

2
arch/x86/net/bpf_jit_comp.c
View File

@@ -3289,7 +3289,7 @@ static int __arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, void *rw_im
arg_stack_off = stack_size;
if (flags & BPF_TRAMP_F_SKIP_FRAME) {
if (flags & BPF_TRAMP_F_CALL_ORIG) {
/* skip patched call instruction and point orig_call to actual
* body of the kernel function.
*/