linux-kernel - Re: [PATCH -tip] sched: fix using uninilialzed rq in task_delta

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Message-ID: <48E257B9.8020509@ct.jp.nec.com>
Date:	Tue, 30 Sep 2008 09:45:45 -0700
From:	Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	linux-kernel@...r.kernel.org, Frank Mayhar <fmayhar@...gle.com>
Subject: Re: [PATCH -tip] sched: fix using uninilialzed rq in	task_delta_exec()

Ingo Molnar wrote:
> * Hiroshi Shimamoto <h-shimamoto@...jp.nec.com> wrote:
> 
>> From: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
>>
>> compiler warnings;
>>
>>   CC      kernel/sched.o
>> kernel/sched.c: In function 'task_delta_exec':
>> kernel/sched.c:4055: warning: unused variable 'flags'
>> kernel/sched.c:4054: warning: 'rq' is used uninitialized in this function
>>
>> calling task_delta_exec() may cause unexpected pointer access.
> 
> heh, just fixed that as well, latest tip/master should have the fix.
> 
> Have you seen any weirdness due to this uninitialized variable?

No I've never seen any problem yesterday.
And I didn't have much time to use tip tree yesterday:)

Today's looks good.

thanks,
Hiroshi Shimamoto
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