From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 94081] [radeon 3.18 regression] GPU reset recovery fails
Date: Wed, 04 Mar 2015 21:10:26 +0000 [thread overview]
Message-ID: <bug-94081-2300-HeYCGcmVLQ@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-94081-2300@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=94081
--- Comment #3 from Jan Vesely <jan.vesely@rutgers.edu> ---
(In reply to Michel Dänzer from comment #2)
> Can you bisect?
It took a while (first bisect found unrelated i915 dispaly commit).
the failure was introduced in:
commit dd7cfd641228abb2669d8d047d5ec377b1835900
Author: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Date: Tue Jan 21 13:07:31 2014 +0100
drm/ttm: kill fence_lock
No users are left, kill it off! :D
Conversion to the reservation api is next on the list, after
that the functionality can be restored with rcu.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
the commit moves a call to fence get below two "goto cleanup" in error paths,
however, fence_put is left in the cleanup: error target. Moving the fence_put
call to pflip_cleanup fixes the issue.
I've posted a patch.
>
> (In reply to Jan Vesely from comment #1)
> > here's dmesg output for 3.17 kernel:
>
> [...]
>
> > [ 249.362280] [drm:r600_ib_test] *ERROR* radeon: fence wait failed (-35).
> > [ 249.362281] [drm:radeon_ib_ring_tests] *ERROR* radeon: failed testing IB
> > on GFX ring (-35).
>
> Actually, this looks like the reset didn't fully work with 3.17 either
> though...
I don't remember seeing this during bisection. This log is from fedora 3.17.8
kernel. I'll check 3.17.8 vanilla and see whether it's fedora specific
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next prev parent reply other threads:[~2015-03-04 21:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-01 19:02 [Bug 94081] New: [radeon 3.18 regression] GPU reset recovery fails bugzilla-daemon
2015-03-01 19:05 ` [Bug 94081] " bugzilla-daemon
2015-03-02 6:58 ` bugzilla-daemon
2015-03-04 21:10 ` bugzilla-daemon [this message]
2015-03-05 1:12 ` bugzilla-daemon
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