linux-kernel - [PATCH] bpf: Fix ___bpf_kretprobe

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Message-Id: <20200315083252.22274-1-ethercflow@gmail.com>
Date:   Sun, 15 Mar 2020 04:32:52 -0400
From:   Wenbo Zhang <ethercflow@...il.com>
To:     ast@...nel.org, daniel@...earbox.net
Cc:     netdev@...r.kernel.org, bpf@...r.kernel.org,
        linux-kernel@...r.kernel.org, ethercflow@...il.com
Subject: [PATCH] bpf: Fix ___bpf_kretprobe_args1(x) macro definition.

Use PT_REGS_RC instead of PT_REGS_RET to get ret currectly.

Signed-off-by: Wenbo Zhang <ethercflow@...il.com>
---
 tools/lib/bpf/bpf_tracing.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h
index b0c9ae5c73b5..f3f3c3fb98cb 100644
--- a/tools/lib/bpf/bpf_tracing.h
+++ b/tools/lib/bpf/bpf_tracing.h
@@ -390,7 +390,7 @@ ____##name(struct pt_regs *ctx, ##args)
 
 #define ___bpf_kretprobe_args0() ctx
 #define ___bpf_kretprobe_args1(x) \
-	___bpf_kretprobe_args0(), (void *)PT_REGS_RET(ctx)
+	___bpf_kretprobe_args0(), (void *)PT_REGS_RC(ctx)
 #define ___bpf_kretprobe_args(args...) \
 	___bpf_apply(___bpf_kretprobe_args, ___bpf_narg(args))(args)
 
-- 
2.17.1