diff options
| author |   Christy Lee <christylee@fb.com> | 2021-12-16 13:33:58 -0800 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2021-12-16 19:44:34 -0800 |
| commit | 496f3324048b6ce024af19ac84a03f6bdef93b7d (patch) | |
| tree | 26d9f830facf64d7b13e087a6bd0be950c299b23 /kernel/bpf/verifier.c | |
| parent | bpf: Right align verifier states in verifier logs. (diff) | |
| download | linux-dev-496f3324048b6ce024af19ac84a03f6bdef93b7d.tar.xz linux-dev-496f3324048b6ce024af19ac84a03f6bdef93b7d.zip | |
Only output backtracking information in log level 2
Backtracking information is very verbose, don't print it in log
level 1 to improve readability.
Signed-off-by: Christy Lee <christylee@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211216213358.3374427-4-christylee@fb.com
Diffstat (limited to '')
| -rw-r--r-- | kernel/bpf/verifier.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 72c4a6bbb5bc..07d7d6124a18 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -2398,7 +2398,7 @@ static int backtrack_insn(struct bpf_verifier_env *env, int idx, if (insn->code == 0) return 0; - if (env->log.level & BPF_LOG_LEVEL) { + if (env->log.level & BPF_LOG_LEVEL2) { verbose(env, "regs=%x stack=%llx before ", *reg_mask, *stack_mask); verbose(env, "%d: ", idx); print_bpf_insn(&cbs, insn, env->allow_ptr_leaks); @@ -2656,7 +2656,7 @@ static int __mark_chain_precision(struct bpf_verifier_env *env, int regno, DECLARE_BITMAP(mask, 64); u32 history = st->jmp_history_cnt; - if (env->log.level & BPF_LOG_LEVEL) + if (env->log.level & BPF_LOG_LEVEL2) verbose(env, "last_idx %d first_idx %d\n", last_idx, first_idx); for (i = last_idx;;) { if (skip_first) { @@ -2743,7 +2743,7 @@ static int __mark_chain_precision(struct bpf_verifier_env *env, int regno, new_marks = true; reg->precise = true; } - if (env->log.level & BPF_LOG_LEVEL) { + if (env->log.level & BPF_LOG_LEVEL2) { verbose(env, "parent %s regs=%x stack=%llx marks:", new_marks ? "didn't have" : "already had", reg_mask, stack_mask); |