Re: lsipc(1) triggers general protection fault in sysvipc_shm_proc_show() on v4.13-rc2+

From	Dominik Brodowski <linux@dominikbrodowski.net>
Newsgroups	linux.kernel
Subject	Re: lsipc(1) triggers general protection fault in sysvipc_shm_proc_show() on v4.13-rc2+
Date	2017-07-30 23:10 +0200
Message-ID	<u93Dj-5wX-13@gated-at.bofh.it> (permalink)
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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@dominikbrodowski.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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lsipc(1) triggers general protection fault in  sysvipc_shm_proc_show() on v4.13-rc2+ Dominik Brodowski <linux@dominikbrodowski.net> - 2017-07-30 12:20 +0200
  Re: lsipc(1) triggers general protection fault in sysvipc_shm_proc_show()  on v4.13-rc2+ Kees Cook <keescook@chromium.org> - 2017-07-30 18:30 +0200
    Re: lsipc(1) triggers general protection fault in sysvipc_shm_proc_show()  on v4.13-rc2+ Kees Cook <keescook@chromium.org> - 2017-07-30 19:50 +0200
      Re: lsipc(1) triggers general protection fault in  sysvipc_shm_proc_show() on v4.13-rc2+ Dominik Brodowski <linux@dominikbrodowski.net> - 2017-07-30 22:20 +0200
        Re: lsipc(1) triggers general protection fault in sysvipc_shm_proc_show()  on v4.13-rc2+ Kees Cook <keescook@chromium.org> - 2017-07-30 22:40 +0200
          Re: lsipc(1) triggers general protection fault in  sysvipc_shm_proc_show() on v4.13-rc2+ Dominik Brodowski <linux@dominikbrodowski.net> - 2017-07-30 23:10 +0200

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