Re: vfs: INFO: possible circular locking dependency detected

Sasha Levin
2012-05-09T16:23:54Z

On Wed, May 9, 2012 at 6:12 PM, Al Viro <viro@zeniv.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?