linux-kernel - [PATCH] selftests/proc: Fix string literal warning in proc-maps-race.c

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Message-ID: <20250803204746.1899942-1-hsukrut3@gmail.com>
Date: Sun,  3 Aug 2025 22:47:26 +0200
From: Sukrut Heroorkar <hsukrut3@...il.com>
To: Shuah Khan <shuah@...nel.org>,
	Suren Baghdasaryan <surenb@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Sukrut Heroorkar <hsukrut3@...il.com>,
	linux-kernel@...r.kernel.org (open list:PROC FILESYSTEM),
	linux-fsdevel@...r.kernel.org (open list:PROC FILESYSTEM),
	linux-kselftest@...r.kernel.org (open list:KERNEL SELFTEST FRAMEWORK)
Cc: skhar@...uxfoundation.org,
	david.hunter.linux@...il.com
Subject: [PATCH] selftests/proc: Fix string literal warning in proc-maps-race.c

This change resolves non literal string format warning invoked
for proc-maps-race.c while compiling.

proc-maps-race.c:205:17: warning: format not a string literal and no format arguments [-Wformat-security]
  205 |                 printf(text);
      |                 ^~~~~~
proc-maps-race.c:209:17: warning: format not a string literal and no format arguments [-Wformat-security]
  209 |                 printf(text);
      |                 ^~~~~~
proc-maps-race.c: In function ‘print_last_lines’:
proc-maps-race.c:224:9: warning: format not a string literal and no format arguments [-Wformat-security]
  224 |         printf(start);
      |         ^~~~~~

Added string format specifier %s for the printf calls
in both print_first_lines() and print_last_lines() thus
resolving the warnings invoked.

The test executes fine after this change thus causing no
affect to the functional behavior of the test.

Signed-off-by: Sukrut Heroorkar <hsukrut3@...il.com>
---
 tools/testing/selftests/proc/proc-maps-race.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/proc/proc-maps-race.c b/tools/testing/selftests/proc/proc-maps-race.c
index 66773685a047..94bba4553130 100644
--- a/tools/testing/selftests/proc/proc-maps-race.c
+++ b/tools/testing/selftests/proc/proc-maps-race.c
@@ -202,11 +202,11 @@ static void print_first_lines(char *text, int nr)
 		int offs = end - text;
 
 		text[offs] = '\0';
-		printf(text);
+		printf("%s", text);
 		text[offs] = '\n';
 		printf("\n");
 	} else {
-		printf(text);
+		printf("%s", text);
 	}
 }
 
@@ -221,7 +221,7 @@ static void print_last_lines(char *text, int nr)
 		nr--;
 		start--;
 	}
-	printf(start);
+	printf("%s", start);
 }
 
 static void print_boundaries(const char *title, FIXTURE_DATA(proc_maps_race) *self)
-- 
2.43.0