[Bug 71552] New: report of a constant reboot of haswell eventually hangs

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=71552

          Priority: medium
            Bug ID: 71552
          Assignee: chris at chris-wilson.co.uk
           Summary: report of a constant reboot of haswell eventually
                    hangs
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: airlied at freedesktop.org
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: Driver/intel
           Product: xorg

We have a report on a set of HSW workstations running our RHEL6 backported
kernel that after a number of reboots the machine doesn't finish booting.

Serial port logging shows the start of a NULL pointer dereference before the hw
goes down completely.

We haven't reproduced this upstream yet due to lack of hardware,
and we haven't tried on other vendor HSW machines yet.

So this is a heads-up and hope someone can give it a quick try, the script they
use just boots to runlevel 5 and reboots.

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