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Message-ID: <200911252204173129580@gmail.com>
Date: Wed, 25 Nov 2009 22:04:20 +0800
From: "Liuweni" <qingshenlwy@...il.com>
To: "linux-kernel" <linux-kernel@...r.kernel.org>
Cc: "Ingo Molnar" <mingo@...e.hu>, "xgr178" <xgr178@....com>,
"strongzgy" <strongzgy@...il.com>,
"qingshenlwy" <qingshenlwy@....com>,
"rusty" <rusty@...tcorp.com.au>, "travis" <travis@....com>,
"adobriyan" <adobriyan@...il.com>, "tglx" <tglx@...utronix.de>
Subject: [PATCH V2]irq/core: Add a length limitation
---
In this version, I modify the code by Ingo's suggestion,
and less code add.
The code will check the irqaction->name's length
and avoid Using too long name without any notice.
---
Signed-off-by: Liuwenyi<qingshenlwy@...il.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Rusty Russell <rusty@...tcorp.com.au>
Cc: Mike Travis <travis@....com>
Cc: Alexey Dobriyan <adobriyan@...il.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-kernel@...r.kernel.org
---
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 0832145..b91dcb1 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -196,6 +196,8 @@ void register_handler_proc(unsigned int irq, struct irqaction *action)
char name [MAX_NAMELEN];
struct irq_desc *desc = irq_to_desc(irq);
+ WARN_ON(strlen(action->name) < MAX_NAMELEN);
+
if (!desc->dir || action->dir || !action->name ||
!name_unique(irq, action))
return;
--------------
Best Regards,
Liuweni
2009-11-25
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