linux-kernel - Re: [PATCH] perf kvm: fix segfault by initializing file

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Message-ID: <512EE073.8090709@gmail.com>
Date:	Wed, 27 Feb 2013 21:43:31 -0700
From:	David Ahern <dsahern@...il.com>
To:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
CC:	acme@...stprotocols.net, linux-kernel@...r.kernel.org,
	Dongsoo Nathaniel Kim <dongsoo.kim@...il.com>
Subject: Re: [PATCH] perf kvm: fix segfault by initializing file_name to NULL

On 2/27/13 9:31 PM, Xiao Guangrong wrote:
>
> On 02/28/2013 11:29 AM, David Ahern wrote:
>> Dongsoo reported that perf-kvm was segfaulting. The bug was introduced by
>> commit 3786063 which moved file_name from struct perf_kvm which was
>> initialized on the stack to an uninitialized stack variable. Fix by
>> initializing.
>>
>> Needs to be applied to 3.7 and 3.8 as well.
>
> David, The bug has already been fixed by by Arnaldo, see:
> http://git.kernel.org/?p=virt/kvm/kvm.git;a=commit;h=20914ce5b9e1ef4a35f1f09a2c9c8fb8eb1c4d86
>

very odd. Arnaldo's latest perf/urgent has the problem -- and no 
initialized variable. Seems to have been dropped somewhere.

David
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