[Bug 87184] [BYT/BSW]igt/gem_concurrent_blit and gem_reset_stats sporadically causes *ERROR* Timed out: waiting for Render to ack

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87184

lu hua <huax.lu at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[BSW]igt/gem_concurrent_bli |[BYT/BSW]igt/gem_concurrent
                   |t and gem_reset_stats       |_blit and gem_reset_stats
                   |sporadically causes *ERROR* |sporadically causes *ERROR*
                   |Timed out: waiting for      |Timed out: waiting for
                   |Render to ack               |Render to ack

--- Comment #1 from lu hua <huax.lu at intel.com> ---
BYT also has this error. When run automation testing, drv_hangman and
gem_reset_stats also have this error. Run more than 5 cycles, I am unable to
reproduce it.

@test: Intel_gpu_tools/igt_drv_hangman_error-state-capture-bsd
returncode: 0
info: @@@Returncode: 0

test case start at: Sat Dec 20 00:13:01 2014
test case end at:   Sat Dec 20 00:13:21 2014

Errors:


Dmesg:
<6>[   96.817503] [drm] stuck on bsd ring
<6>[   96.824051] [drm] GPU HANG: ecode 7:1:0xfffffffe, in drv_hangman [5367],
reason: Ring hung, action: reset
<6>[   96.824060] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
<6>[   96.824063] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
<6>[   96.824065] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
<6>[   96.824068] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
<6>[   96.824070] [drm] GPU crash dump saved to /sys/class/drm/card0/error
<3>[   96.824152] [drm:__vlv_force_wake_get [i915]] *ERROR* Timed out: waiting
for Render to ack.
<6>[   96.826195] [drm] Simulated gpu hang, resetting stop_rings
<5>[   96.826200] drm/i915: Resetting chip after gpu hang

@test: Intel_gpu_tools/igt_gem_reset_stats_ban-bsd
returncode: 0
info: @@@Returncode: 0

test case start at: Sat Dec 20 05:10:18 2014
test case end at:   Sat Dec 20 05:10:35 2014

Errors:


Dmesg:
<6>[  754.357515] [drm] stuck on bsd ring
<6>[  754.364622] [drm] GPU HANG: ecode 7:1:0x277fffff, in gem_reset_stats
[17204], reason: Ring hung, action: reset
<6>[  754.364638] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
<6>[  754.364641] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
<6>[  754.364643] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
<6>[  754.364646] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
<6>[  754.364648] [drm] GPU crash dump saved to /sys/class/drm/card0/error
<3>[  754.364730] [drm:__vlv_force_wake_get [i915]] *ERROR* Timed out: waiting
for Render to ack.
<6>[  754.367345] [drm] Simulated gpu hang, resetting stop_rings
<5>[  754.367350] drm/i915: Resetting chip after gpu hang
<6>[  760.362407] [drm] stuck on bsd ring
<6>[  760.368876] [drm] GPU HANG: ecode 7:1:0x277fffff, in gem_reset_stats
[17204], reason: Ring hung, action: reset
<6>[  760.371375] [drm] Simulated gpu hang, resetting stop_rings
<5>[  760.371380] drm/i915: Resetting chip after gpu hang

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