linux-kernel - [PATCH v1 1/1] genirq: Bump the size of the local variable for sprintf()

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <20250515085516.2913290-1-andriy.shevchenko@linux.intel.com>
Date: Thu, 15 May 2025 11:55:16 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	kernel test robot <lkp@...el.com>
Subject: [PATCH v1 1/1] genirq: Bump the size of the local variable for sprintf()

GCC is not happy about sprintf() call on a buffer that might be too small for
the given formatting string.

kernel/irq/debugfs.c:233:26: warning: 'sprintf' may write a terminating nul past the end of the destination [-Wformat-overflow=]

Fix this by bumping the size of the local variable for sprintf().

Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202505151057.xbyXAbEn-lkp@intel.com/
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 kernel/irq/debugfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/irq/debugfs.c b/kernel/irq/debugfs.c
index 3d6a5b3cfaf3..3527defd2890 100644
--- a/kernel/irq/debugfs.c
+++ b/kernel/irq/debugfs.c
@@ -225,7 +225,7 @@ void irq_debugfs_copy_devname(int irq, struct device *dev)
 
 void irq_add_debugfs_entry(unsigned int irq, struct irq_desc *desc)
 {
-	char name [10];
+	char name [12];
 
 	if (!irq_dir || !desc || desc->debugfs_file)
 		return;
-- 
2.47.2