[Bug 79235] New: [i965 Bisected]Ogles1conform, Ogles3conform and most of Piglit cases segfault

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79235

          Priority: high
            Bug ID: 79235
                CC: idr at freedesktop.org
          Assignee: mattst88 at gmail.com
           Summary: [i965 Bisected]Ogles1conform, Ogles3conform and most
                    of Piglit cases segfault
        QA Contact: intel-3d-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: Drivers/DRI/i965
           Product: Mesa

System Environment:
--------------------------
Platform: Ironlake
Libdrm:       
(master)libdrm-2.4.54-9-g8fc62ca8ac010659023bb63c4759eb683de4f9af
Mesa:        (master)c2c639ecf667b4b7cf17cfe33dfe710432f2c43a
Xserver:   
(master)xorg-server-1.15.99.902-97-gdb2e708f31a162c6c66643d3559dd5f3e21ee06b
Xf86_video_intel:(master)2.99.911-206-g605fcd9050efc816ac8163e8d626f466d98261c2
Libva:        (staging)35e70cb9b9c77dfb99fb370e319ed501f0c31b17
Libva_intel_driver:(staging)ca1acd54eb59eadabfb40a4b61df2e8968b5e00d
Kernel:    (drm-intel-nightly)c37f30ddc2921eccbf0be87c7742b56fbde53a81

Bug detailed description:
-----------------------------
All Ogles1conform,Ogles2conform, Ogles3conform cases and most of Piglit cases
segfault. It happens on i956 platforms with Mesa master branch, It doesn't
happen on 10.2 branch.

Bisect shows: f0f7fb181fc267934a44904da4530f50a698b18d is the first bad commit
commit f0f7fb181fc267934a44904da4530f50a698b18d
Author:     Matt Turner <mattst88 at gmail.com>
AuthorDate: Mon May 19 10:20:37 2014 -0700
Commit:     Matt Turner <mattst88 at gmail.com>
CommitDate: Sat May 24 23:03:23 2014 -0700

    i965: Print disassembly after compaction.

    Reviewed-by: Eric Anholt <eric at anholt.net>

run Piglit case bin/arb_uniform_buffer_object-dlist -fbo -auto
output:
Segmentation fault (core dumped)

Reproduce steps:
----------------------------
1. xinit
2. bin/arb_uniform_buffer_object-dlist -fbo -auto

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