[Bug 107367] [regression, bisected] Games freeze the PC with newest AMD Staging DRM Next Kernel - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 107367] [regression, bisected] Games freeze the PC with newest AMD Staging DRM Next Kernel
Date: Tue, 24 Jul 2018 19:10:44 +0000	[thread overview]
Message-ID: <bug-107367-502@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=107367

            Bug ID: 107367
           Summary: [regression, bisected] Games freeze the PC with newest
                    AMD Staging DRM Next Kernel
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: gr.muench@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

This reproducible all the time with Dota2 starting a benchmark with 1920x1080
and Vulkan using Phoronix test suite.
Starting the benchmark makes the machine freeze and you just can hit the reset
button.
I also experienced the freeze with Shadow of Mordor but not all the time.

fc9a53946d9c107a36b79de3dd1a4eac43f13f3f is the first bad commit
commit fc9a53946d9c107a36b79de3dd1a4eac43f13f3f
Author: Junwei Zhang <Jerry.Zhang@amd.com>
Date:   Mon Jul 16 10:53:43 2018 +0800

    drm/scheduler: add NULL pointer check for run queue (v2)

    To check rq pointer before adding entity into it.
    That avoids NULL pointer access in some case.

    v2: move the check to caller

    Suggested-by: Christian König <christian.koenig@amd.com>
    Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
    Reviewed-by: Christian König <christian.koenig@amd.com>

:040000 040000 aa8b4eb640e3995a1f77907edd6ec8fc6fccd1b3
4a061e532ddb8a1293e781a4ccd5ece2efe35d8a M      drivers

Reverting the commit let the freeze go away.

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