linux-kernel - [PATCH] selftests:breakpoints: Fix Format String Warning in breakpoint

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 28 Nov 2023 21:57:26 -0600
From:   angquan yu <angquan21@...il.com>
To:     skhan@...uxfoundation.org
Cc:     shuah@...nel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        angquan yu <angquan21@...il.com>
Subject: [PATCH] selftests:breakpoints: Fix Format String Warning in breakpoint_test

From: angquan yu <angquan21@...il.com>

This commit resolves a compiler warning regardingthe
use of non-literal format strings in breakpoint_test.c.

The functions `ksft_test_result_pass` and `ksft_test_result_fail`
were previously called with a variable `msg` directly, which could
potentially lead to format string vulnerabilities.

Changes made:
- Modified the calls to `ksft_test_result_pass` and `ksft_test_result_fail`
by adding a "%s" format specifier. This explicitly declares `msg` as a
string argument, adhering to safer coding practices and resolving
the compiler warning.

This change does not affect the functional behavior of the code but ensures
better code safety and compliance with recommended C programming standards.

The previous warning is "breakpoint_test.c:287:17:
warning: format not a string literal and no format arguments
[-Wformat-security]
  287 |                 ksft_test_result_pass(msg);
      |                 ^~~~~~~~~~~~~~~~~~~~~
breakpoint_test.c:289:17: warning: format not a string literal
and no format arguments [-Wformat-security]
  289 |                 ksft_test_result_fail(msg);
      |    "

Signed-off-by: angquan yu <angquan21@...il.com>
---
 tools/testing/selftests/breakpoints/breakpoint_test.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/breakpoints/breakpoint_test.c b/tools/testing/selftests/breakpoints/breakpoint_test.c
index 3266cc929..d46962a24 100644
--- a/tools/testing/selftests/breakpoints/breakpoint_test.c
+++ b/tools/testing/selftests/breakpoints/breakpoint_test.c
@@ -284,9 +284,9 @@ static void check_success(const char *msg)
 	nr_tests++;
 
 	if (ret)
-		ksft_test_result_pass(msg);
+		ksft_test_result_pass("%s", msg);
 	else
-		ksft_test_result_fail(msg);
+		ksft_test_result_fail("%s", msg);
 }
 
 static void launch_instruction_breakpoints(char *buf, int local, int global)
-- 
2.39.2