[Bug 67243] [ILK]igt/kms_render/gpu-blit randomly causes system hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67243

--- Comment #9 from Imre Deak <imre.deak at gmail.com> ---
(In reply to comment #8)
> I can't find a good commit.
> Test on drm-intel-fixes(8abbbaf6adb46157b6bd416f7616b555cc6a332f), It also
> happens.

I can't reproduce this on the latest -nightly with my IVB EliteBook 8440p.. At
least one difference is the resolution (1600x900 vs your 1366x768). The above
commit is rather old (Mar 27), so could you retest with the latest -nightly
instead (both with --run-subtest gpu-blit and direct-render)?

Also since in your log the hang seems to happen at the last step, there is a
slight chance gem_quiescent_gpu gets stuck somehow, so could you try both
subtests also with the following igt patch:

diff --git a/lib/drmtest.c b/lib/drmtest.c
index 37d7da3..aa382ff 100644
--- a/lib/drmtest.c
+++ b/lib/drmtest.c
@@ -243,8 +243,10 @@ int drm_open_any(void)
     if (__sync_fetch_and_add(&open_count, 1))
         return fd;

+    if (0) {
     gem_quiescent_gpu(fd);
     igt_install_exit_handler(quiescent_gpu_at_exit);
+    }

     return fd;
 }

Is it a hard hang, that is you can't even ping/ssh the machine?

Thanks.

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