[Bug 62584] New: [SNB Bisected]System hang while booting up with -queued kernel

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=62584

          Priority: high
            Bug ID: 62584
                CC: cancan.feng at intel.com, xunx.fang at intel.com,
                    yangweix.shui at intel.com
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [SNB Bisected]System hang while booting up with
                    -queued kernel
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: critical
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

System Environment:
--------------------------
Kernel: (drm-intel-nightly)24b0ac8d5fae57b2e99ac2babfc6e63f0a1d851d
Some additional commit info:
Merge: 8417942 c12aba5

Bug detailed description:
-------------------------
System hang while booting up. It happens on -queued kernel.It works well on
-fixes kernel.

Bisect shows: 90eb871b012a30c2476444b7c5c0b37e7b44c05a is the first bad commit
commit 90eb871b012a30c2476444b7c5c0b37e7b44c05a
Author:     Imre Deak <imre.deak at intel.com>
AuthorDate: Mon Feb 18 19:28:04 2013 +0200
Commit:     Daniel Vetter <daniel.vetter at ffwll.ch>
CommitDate: Tue Mar 19 09:51:15 2013 +0100

    drm/i915: use for_each_sg_page for setting up the gtt ptes

    The existing gtt setup code is correct - and so doesn't need to be fixed to
    handle compact dma scatter lists similarly to the previous patches. Still,
    take the for_each_sg_page macro into use, to get somewhat simpler code.

    Signed-off-by: Imre Deak <imre.deak at intel.com>
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

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