Re: general protection fault in do_msgrcv [3.8]

From: Dave Jones
Date: Wed Feb 20 2013 - 13:24:48 EST

On Wed, Feb 20, 2013 at 12:23:22PM +0400, Stanislav Kinsbursky wrote:

> > Pid: 887, comm: trinity-child2 Not tainted 3.8.0+ #57 Gigabyte Technology Co., Ltd. GA-MA78GM-S2H/GA-MA78GM-S2H
> > RIP: 0010:[<ffffffff812aebba>] [<ffffffff812aebba>] do_msgrcv+0x22a/0x670
> > ...
> > Looks like Stanislav recently changed this code, so problem was likely introduced
> > in those changes.
> >
> Is it easy to reproduce? Do you use KVM?

Only hit it once so far, no KVM

> There is a NULL selinux handler bug fix by Stephen Smalley here:
> But anyway, this bug fix affects only the case, when MSG_COPY flag is set.
> And this is not your case, I suppose?

>From my reading of the traces, I'd say not. It looks like I'm oopsing before
we even get to the SELinux hooks.


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