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

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Date:	Thu, 28 Feb 2013 11:24:11 -0300
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	David Ahern <dsahern@...il.com>
Cc:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>,
	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

Em Wed, Feb 27, 2013 at 09:43:31PM -0700, David Ahern escreveu:
> 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.

Just fast forwarded my perf/urgent to tip/perf/urgent, checked and the
fix is there as pointed out by Xiao.

- Arnaldo
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