linux-kernel - Re: lsipc(1) triggers general protection fault in sysvipc_shm_proc

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Date:   Sun, 30 Jul 2017 23:06:38 +0200
From:   Dominik Brodowski <linux@...inikbrodowski.net>
To:     Kees Cook <keescook@...omium.org>
Cc:     Manfred Spraul <manfred@...orfullife.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: lsipc(1) triggers general protection fault in
 sysvipc_shm_proc_show() on v4.13-rc2+

On Sun, Jul 30, 2017 at 01:36:51PM -0700, Kees Cook wrote:
> On Sun, Jul 30, 2017 at 1:16 PM, Dominik Brodowski
> <linux@...inikbrodowski.net> wrote:
> > I've bisected it to between v4.13-rc1 and 96080f697786 so far, ~7 more
> > kernels/reboots to go. That leaves no code changes to ipc/, but some
> > randstruct changes ( I have set CONFIG_GCC_PLUGIN_RANDSTRUCT=y ) which
> > touch some ipc-related code.
> 
> Excellent, thanks; I bisected this as well. There was a missing
> container_of() in the proc handler. I've sent a patch for this now.
> Thanks for the report!

Thank you for fixing this issue - I can confirm that your patch (v2), on top
of v4.13-rc3, fixes the issue I've been seeing.

Thanks again,
	Dominik

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