[Bug 87275] New: Kernel panic when starting gdm on machine with intel hd4000

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87275

            Bug ID: 87275
           Summary: Kernel panic when starting gdm on machine with intel
                    hd4000
           Product: Mesa
           Version: 10.3
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: chris.anderson2014 at yandex.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 110804
  --> https://bugs.freedesktop.org/attachment.cgi?id=110804&action=edit
Stack trace for kernel oops.

I have a working system with gnome 3.12 and mesa 10.3 and intel drivers with
Xorg on linux.

At circa kernel version 3.16 the machine stopped booting into gdm. At startup
there was a kernel panic with almost every kernel version.

I waited a while and checked the kernel config but didn't find anything major
that had changed between the two kernel versions. This still happens with
3.17.6. The two configs can be seen from 
https://bugs.gentoo.org/show_bug.cgi?id=526522

I have the stack trace as an attachment. I could not get a stack trace until I
started playing around with USB serial port drivers and kexecing. Kexecing is
overkill as I don't want the whole state of the machine and USB serial was
useless. Then I found the efi-pstore module. 

EFI-pstore - the only good thing that begins with EFI-.

I will look in the code and I will probably find there is some config missing
with a null pointer being dereferenced and that my config is horribly wrong
because its a config that I have used for 5 difference machines since 2008 and
hasn't been cleaned up since....

Faithfully

Timbo

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