From: Andrii Nakryiko <andrii@xxxxxxxxxx>
[ 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 <andrii@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230313184017.4083374-1-andrii@xxxxxxxxxx
Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 a53ba87a1cd2a..df353ba844f41 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -13678,7 +13678,7 @@ 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;
@@ -13694,7 +13694,7 @@ 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;
--
2.39.2
