[Bug 107545] radeon - ring 0 stalled - GPU lockup - SI - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 107545] radeon - ring 0 stalled - GPU lockup - SI
Date: Fri, 10 Aug 2018 22:59:59 +0000	[thread overview]
Message-ID: <bug-107545-502@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=107545

            Bug ID: 107545
           Summary: radeon - ring 0 stalled - GPU lockup - SI
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: julien.isorce@gmail.com

* Steps to reproduce:
for i in {0..300}; do (glxgears &); done  (note that 100 might be enough
instead of 300)

* Actual result:
ring 0 stalled, gpu locakup, reset and x11 stops and cannot restart. The only
way is to reboot.

* Expected result:
The fps goes very low the more there are glxgears instances and no gpu lockup,
like with intel gpu.

* Infos:
card W600
mesa 18.2,
kernel 4.15.0-15-generic,
LLVM 7.0.0
xorg 1.20.99.1
xf86-video-ati 18.0.1.
(same result with kernel 4.4.0-130, mesa 12.0.6, llvm 3.8.0, DRM 2.43.0)

I was playing with the apitrace here 
https://bugs.freedesktop.org/show_bug.cgi?id=87278#c31 and decided to through
dozens of glxgears instances to see.

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