[Bug 60307] New: [SNB ILK regression] Call trace appears while doing fbset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=60307

          Priority: medium
            Bug ID: 60307
                CC: yangweix.shui at intel.com
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [SNB ILK regression] Call trace appears while doing
                    fbset
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: All
          Reporter: cancan.feng at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

System Environment:
--------------------------------------------
Kernel: (drm-intel-next-queued)7d37beaaf3dbc6ff16f4d32a4dd6f8c557c6ab50
Some additional commit info:
Author: Yasuaki Ishimatsu <isimatu.yasuaki at jp.fujitsu.com>
Date:   Fri Feb 1 10:14:20 2013 +0900

    GPU/i915: Fix acpi_bus_get_device() check in
drivers/gpu/drm/i915/intel_opregion.c


Bug detailed description:
--------------------------------------------
Fbset will cause calltrace. And I found that only happened at kernel with
kernel hijack options. If I disable the kernel hijack options, then build
kernel and redo fbset, calltrace will not happen. Bisect is on the way, I will
paste the first commit info later. 


Reproduce steps:
--------------------------------------------
1. reboot or start 
2. fbset -xres 800 -yres 600

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