linux-kernel - Re: vfs: INFO: possible circular locking dependency detected

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Message-ID: <CA+1xoqdEFOBPSng99jFcgj9Un9ZguXqKhXYdDCeKv3k5nLrC6Q@mail.gmail.com>
Date:	Wed, 9 May 2012 18:23:30 +0200
From:	Sasha Levin <levinsasha928@...il.com>
To:	Al Viro <viro@...iv.linux.org.uk>
Cc:	linux-fsdevel@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: vfs: INFO: possible circular locking dependency detected

On Wed, May 9, 2012 at 6:12 PM, Al Viro <viro@...iv.linux.org.uk> wrote:
> On Wed, May 09, 2012 at 05:25:14PM +0200, Sasha Levin wrote:
>> Hi all,
>>
>> I've started seeing the following warning while fuzzing inside a KVM guest with the latest -next:
>        It's not a realistic attack, fortunately, since you need root
> to get past open_exec() on any of those...  Wait.  How _did_ you get
> past open_exec(), anyway?  MAY_EXEC is not supposed to be granted on
> anything that has no exec bits at all and AFAICS none of those files
> have them.

You could chmod +x and run them, no?
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