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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        Tianjia Zhang <tianjia.zhang@linux.alibaba.com>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Tobias Klauser <tklauser@distanz.ch>,
        Andrii Nakryiko <andriin@fb.com>,
        John Fastabend <john.fastabend@gmail.com>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.7 292/393] tools, bpftool: Fix wrong return value in do_dump()
Date:   Mon, 17 Aug 2020 17:15:42 +0200
Message-Id: <20200817143833.786643800@linuxfoundation.org>
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References: <20200817143819.579311991@linuxfoundation.org>
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From: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>

[ Upstream commit 041549b7b2c7811ec40e705c439211f00ade2dda ]

In case of btf_id does not exist, a negative error code -ENOENT
should be returned.

Fixes: c93cc69004df3 ("bpftool: add ability to dump BTF types")
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200802111540.5384-1-tianjia.zhang@linux.alibaba.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/bpf/bpftool/btf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c
index bcaf55b594982..81a77475bea61 100644
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c
@@ -597,7 +597,7 @@ static int do_dump(int argc, char **argv)
 			goto done;
 		}
 		if (!btf) {
-			err = ENOENT;
+			err = -ENOENT;
 			p_err("can't find btf with ID (%u)", btf_id);
 			goto done;
 		}
-- 
2.25.1