From a62ba7e0d2e81cbd71bf5e84a57803d56fb6e3de Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Mon, 13 Mar 2023 11:40:17 -0700 Subject: [PATCH] bpf: fix precision propagation verbose logging [ Upstream commit 34f0677e7afd3a292bc1aadda7ce8e35faedb204 ] Fix wrong order of frame index vs register/slot index in precision propagation verbose (level 2) output. It's wrong and very confusing as is. Fixes: 529409ea92d5 ("bpf: propagate precision across all frames, not just the last one") Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/r/20230313184017.4083374-1-andrii@kernel.org Signed-off-by: Alexei Starovoitov Signed-off-by: Sasha Levin --- kernel/bpf/verifier.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index deaeedc..8a9f514 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -11912,7 +11912,7 @@ static int propagate_precision(struct bpf_verifier_env *env, !(state_reg->live & REG_LIVE_READ)) continue; if (env->log.level & BPF_LOG_LEVEL2) - verbose(env, "frame %d: propagating r%d\n", i, fr); + verbose(env, "frame %d: propagating r%d\n", fr, i); err = mark_chain_precision_frame(env, fr, i); if (err < 0) return err; @@ -11928,7 +11928,7 @@ static int propagate_precision(struct bpf_verifier_env *env, continue; if (env->log.level & BPF_LOG_LEVEL2) verbose(env, "frame %d: propagating fp%d\n", - (-i - 1) * BPF_REG_SIZE, fr); + fr, (-i - 1) * BPF_REG_SIZE); err = mark_chain_precision_stack_frame(env, fr, i); if (err < 0) return err; -- 2.7.4