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From ea6a25848bccdb69ae68d01b5ed2fbf429ea747e Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Sat, 13 Apr 2024 02:42:54 +0100
Subject: selftests/tcp_ao: Fix fscanf() call for format-security
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
From: Dmitry Safonov <0x7f454c46@gmail.com>
[ Upstream commit beb78cd1329d039d73487ca05633d1b92e1ab2ea ]
On my new laptop with packages from nixos-unstable, gcc 12.3.0 produces:
> lib/proc.c: In function ‘netstat_read_type’:
> lib/proc.c:89:9: error: format not a string literal and no format arguments [-Werror=format-security]
> 89 | if (fscanf(fnetstat, type->header_name) == EOF)
> | ^~
> cc1: some warnings being treated as errors
Here the selftests lib parses header name, while expectes non-space word
ending with a column.
Fixes: cfbab37b3da0 ("selftests/net: Add TCP-AO library")
Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com>
Reported-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/selftests/net/tcp_ao/lib/proc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/net/tcp_ao/lib/proc.c b/tools/testing/selftests/net/tcp_ao/lib/proc.c
index 2fb6dd8adba69..8b984fa042869 100644
--- a/tools/testing/selftests/net/tcp_ao/lib/proc.c
+++ b/tools/testing/selftests/net/tcp_ao/lib/proc.c
@@ -86,7 +86,7 @@ static void netstat_read_type(FILE *fnetstat, struct netstat **dest, char *line)
pos = strchr(line, ' ') + 1;
- if (fscanf(fnetstat, type->header_name) == EOF)
+ if (fscanf(fnetstat, "%[^ :]", type->header_name) == EOF)
test_error("fscanf(%s)", type->header_name);
if (fread(&tmp, 1, 1, fnetstat) != 1 || tmp != ':')
test_error("Unexpected netstat format (%c)", tmp);
--
2.43.0
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