RE: [PATCH] cris:Check kmalloc return value before use data

From: Mikael Starvik
Date: Tue May 18 2010 - 05:03:13 EST

Sure, if you feel like its worth it. If we can't allocate one page of data in an init function we are probably up for more problems soon...

Signed-off-by: Mikael Starvik <starvik@xxxxxxxx>

-----Original Message-----
From: Steven Liu [mailto:lingjiujianke@xxxxxxxxx]
Sent: den 18 maj 2010 08:26
To: Mikael Starvik; Jesper Nilsson; linux-kernel@xxxxxxxxxxxxxxx; linux-cris-kernel; liuqi@xxxxxxxxxxxxx
Subject: [PATCH] cris:Check kmalloc return value before use data

Check kmalloc return value before use data

Signed-off-by: Liu Qi <lingjiujianke@xxxxxxxxx>
arch/cris/arch-v32/kernel/signal.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/cris/arch-v32/kernel/signal.c
index 0b7e3f1..dd69fb4 100644
--- a/arch/cris/arch-v32/kernel/signal.c
+++ b/arch/cris/arch-v32/kernel/signal.c
@@ -656,6 +656,9 @@ int __init
u16* data = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ if(!data){
+ printk(KERN_ERR "kmalloc memory failed in %s \n", __func__);
+ return -ENOMEM;
+ }

/* This is movu.w __NR_sigreturn, r9; break 13; */
data[0] = 0x9c5f;
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