[Bug 90393] New: [SNB]igt/gem_read_read_speed/read-read-512x512 crash

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90393

            Bug ID: 90393
           Summary: [SNB]igt/gem_read_read_speed/read-read-512x512 crash
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: high
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: huax.lu at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 115675
  --> https://bugs.freedesktop.org/attachment.cgi?id=115675&action=edit
dmesg

==System Environment==
--------------------------
Regression: not sure

Non-working platforms: SNB

==kernel==
--------------------------
drm-intel-nightly/a1e469d124cad96cd0d0e149c84f7ebd43ca1893
commit a1e469d124cad96cd0d0e149c84f7ebd43ca1893
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Fri May 8 17:48:23 2015 +0200

    drm-intel-nightly: 2015y-05m-08d-15h-47m-50s UTC integration manifest


2015_04_24/drm-intel-nightly/92bb36c80e561f82b1f4b63cc269a71833137841/
commit 92bb36c80e561f82b1f4b63cc269a71833137841
Author: Jani Nikula <jani.nikula at intel.com>
Date:   Fri Apr 24 00:26:53 2015 +0300

    drm-intel-nightly: 2015y-04m-23d-21h-26m-24s UTC integration manifest

==Bug detailed description==
-----------------------------
Run following case list, it will crash. run ./gem_read_read_speed --run-subtest
read-read-512x512 10 cycles, I don't meet crash.

Run  drm-intel-nightly/a1e469d124cad96cd0d0e149c84f7ebd43ca1893 and
rm-intel-nightly/92bb36c80e561f82b1f4b63cc269a71833137841, both of them have
this issue.

case list:
Intel_gpu_tools/igt at gem_pwrite_pread@display-copy-correctness    PASS
Intel_gpu_tools/igt at gem_pwrite_pread@display-copy-performance    DMESG_WARN
Intel_gpu_tools/igt at gem_pwrite_pread@display-pwrite-blt-gtt_mmap-correctness   
PASS
Intel_gpu_tools/igt at gem_pwrite_pread@display-pwrite-blt-gtt_mmap-performance   
PASS
Intel_gpu_tools/igt at gem_pwrite_pread@snooped-copy-correctness    PASS
Intel_gpu_tools/igt at gem_pwrite_pread@snooped-copy-performance    PASS
Intel_gpu_tools/igt at gem_pwrite_pread@snooped-pwrite-blt-cpu_mmap-correctness   
PASS
Intel_gpu_tools/igt at gem_pwrite_pread@snooped-pwrite-blt-cpu_mmap-performance   
PASS
Intel_gpu_tools/igt at gem_pwrite_pread@uncached-copy-correctness    PASS
Intel_gpu_tools/igt at gem_pwrite_pread@uncached-copy-performance    PASS
Intel_gpu_tools/igt at gem_pwrite_pread@uncached-pwrite-blt-gtt_mmap-correctness  
 PASS
Intel_gpu_tools/igt at gem_pwrite_pread@uncached-pwrite-blt-gtt_mmap-performance  
 PASS
Intel_gpu_tools/igt at gem_pwrite@snoop    PASS
Intel_gpu_tools/igt at gem_pwrite@uncached    PASS
Intel_gpu_tools/igt at gem_read_read_speed@read-read-1024x1024    PASS
Intel_gpu_tools/igt at gem_read_read_speed@read-read-128x128    PASS
Intel_gpu_tools/igt at gem_read_read_speed@read-read-1x1    PASS
Intel_gpu_tools/igt at gem_read_read_speed@read-read-2048x2048    PASS
Intel_gpu_tools/igt at gem_read_read_speed@read-read-256x256    PASS
Intel_gpu_tools/igt at gem_read_read_speed@read-read-4096x4096    PASS
Intel_gpu_tools/igt at gem_read_read_speed@read-read-512x512    CRASH

dmesg:
[  342.257192] gem_read_read_speed: starting subtest read-read-512x512
[  347.947011] [drm] stuck on render ring
[  347.947894] [drm] stuck on blitter ring
[  347.949319] [drm] GPU HANG: ecode 6:0:0x85fffffc, in gem_read_read_s [8985],
reason: Ring hung, action: reset
[  347.950222] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  347.951127] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  347.952048] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  347.952982] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  347.953931] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[  347.955113] [drm:i915_reset_and_wakeup] resetting chip
[  347.955275] [drm:i915_context_is_banned [i915]] *ERROR* gpu hanging too
fast, banning!
[  348.459411] drm/i915: Resetting chip after gpu hang
[  348.460405] [drm:i915_reset [i915]] *ERROR* Failed to reset chip: -110
[  348.462280] gem_read_read_speed: exiting, ret=0


==Reproduce steps==
---------------------------- 
1.  Run above case list

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