Re: [Bug #16388] i915 drm BUG: unable to handle kernel paging request at a5e89046

Jesse Barnes
2010-07-23T17:36:59Z

On Fri, 23 Jul 2010 14:15:55 +0200 (CEST)
"Rafael J. Wysocki" <rjw@sisk.pl> wrote:

> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.33 and 2.6.34.
>
> The following bug entry is on the current list of known regressions
> introduced between 2.6.33 and 2.6.34. Please verify if it still should
> be listed and let the tracking team know (either way).
>
>
> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=16388
> Subject : i915 drm BUG: unable to handle kernel paging request at a5e89046
> Submitter : <lists@clanduggan.org>
> Date : 2010-07-14 16:59 (10 days old)

Looks like some potential memory corruption? At resume we try to get
connector info but panic due to a bad pointer, maybe in one of the
lists. Can you gdb your drm_kms_helper module and do "list
*drm_mode_getconnector+0x295" to see what line this is?

Also, what chipset do you have? Maybe I can reproduce it here with
your kernel config.

--
Jesse Barnes, Intel Open Source Technology Center