From: Chen Gang <gang.chen@asianux.com>
Date: Wed, 3 Jul 2013 22:04:52 +0000 (-0700)
Subject: arch/frv/kernel/traps.c: using vsnprintf() instead of vsprintf()
X-Git-Tag: v3.11-rc1~99^2~264
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=760033c45e8aa13c9e02530da7274edc624c7689;p=linux.git

arch/frv/kernel/traps.c: using vsnprintf() instead of vsprintf()

Since die_if_kernel() is an extern common used function, better always
check the buffer length to avoid memory overflow by a long 'str'.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/arch/frv/kernel/traps.c b/arch/frv/kernel/traps.c
index 4bff48c19d29..a6d105d61b26 100644
--- a/arch/frv/kernel/traps.c
+++ b/arch/frv/kernel/traps.c
@@ -523,7 +523,7 @@ void die_if_kernel(const char *str, ...)
 		return;
 
 	va_start(va, str);
-	vsprintf(buffer, str, va);
+	vsnprintf(buffer, sizeof(buffer), str, va);
 	va_end(va);
 
 	console_verbose();