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From: Quentin Monnet <quentin.monnet@netronome.com>
To: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>
Cc: bpf@vger.kernel.org, netdev@vger.kernel.org,
	oss-drivers@netronome.com,
	Quentin Monnet <quentin.monnet@netronome.com>
Subject: [PATCH bpf 3/6] tools: bpftool: fix argument for p_err() in BTF do_dump()
Date: Thu, 15 Aug 2019 15:32:17 +0100	[thread overview]
Message-ID: <20190815143220.4199-4-quentin.monnet@netronome.com> (raw)
In-Reply-To: <20190815143220.4199-1-quentin.monnet@netronome.com>

The last argument passed to one call to the p_err() function is not
correct, it should be "*argv" instead of "**argv". This may lead to a
segmentation fault error if BTF id cannot be parsed correctly. Let's fix
this.

Fixes: c93cc69004dt ("bpftool: add ability to dump BTF types")
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
---
 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 1b8ec91899e6..8805637f1a7e 100644
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c
@@ -449,7 +449,7 @@ static int do_dump(int argc, char **argv)
 
 		btf_id = strtoul(*argv, &endptr, 0);
 		if (*endptr) {
-			p_err("can't parse %s as ID", **argv);
+			p_err("can't parse %s as ID", *argv);
 			return -1;
 		}
 		NEXT_ARG();
-- 
2.17.1


  parent reply	other threads:[~2019-08-15 14:32 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-15 14:32 [PATCH bpf 0/6] tools: bpftool: fix printf()-like functions Quentin Monnet
2019-08-15 14:32 ` [PATCH bpf 1/6] tools: bpftool: fix arguments for p_err() in do_event_pipe() Quentin Monnet
2019-08-15 14:32 ` [PATCH bpf 2/6] tools: bpftool: fix format strings and arguments for jsonw_printf() Quentin Monnet
2019-08-15 14:32 ` Quentin Monnet [this message]
2019-08-15 14:32 ` [PATCH bpf 4/6] tools: bpftool: fix format string for p_err() in query_flow_dissector() Quentin Monnet
2019-08-15 14:32 ` [PATCH bpf 5/6] tools: bpftool: fix format string for p_err() in detect_common_prefix() Quentin Monnet
2019-08-15 14:32 ` [PATCH bpf 6/6] tools: bpftool: move "__printf()" attributes to header file Quentin Monnet
2019-08-16  5:08 ` [PATCH bpf 0/6] tools: bpftool: fix printf()-like functions Alexei Starovoitov
2019-08-16 16:41   ` Quentin Monnet
2019-08-16 17:11     ` Alexei Starovoitov
2019-08-16 17:18       ` Quentin Monnet
2019-08-16 17:51       ` Jakub Kicinski

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