bpf: fix precision propagation verbose logging

[ Upstream commit 34f0677 ]

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: 529409e ("bpf: propagate precision across all frames, not just the last one")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20230313184017.4083374-1-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

kernel/bpf/verifier.c

@@ -14229,7 +14229,7 @@ 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;
@@ -14245,7 +14245,7 @@ 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;