| Message ID | 20211025224531.1088894-2-andrii@kernel.org (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | BPF |
| Headers | show |
| Series | libbpf: add bpf_program__insns() accessor | expand |
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 604abe00785f..e27a249d46fb 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -5405,7 +5405,7 @@ static int bpf_core_apply_relo(struct bpf_program *prog, * relocated, so it's enough to just subtract in-section offset */ insn_idx = insn_idx - prog->sec_insn_off; - if (insn_idx > prog->insns_cnt) + if (insn_idx >= prog->insns_cnt) return -EINVAL; insn = &prog->insns[insn_idx];
Fix instruction index validity check which has off-by-one error. Fixes: 3ee4f5335511 ("libbpf: Split bpf_core_apply_relo() into bpf_program independent helper.") Signed-off-by: Andrii Nakryiko <andrii@kernel.org> --- tools/lib/bpf/libbpf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)