[Bug 204181] NULL pointer dereference regression in amdgpu

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=204181

--- Comment #33 from Nicholas Kazlauskas (nicholas.kazlauskas at amd.com) ---
I(In reply to Sergey Kondakov from comment #26)
> Created attachment 284083 [details]
> dmesg_2019-08-02-amdgpu_fail_on_patched_5.2.5
> 
> (In reply to Nicholas Kazlauskas from comment #24)
> > This should be fixed with the series linked below:
> > 
> > https://patchwork.freedesktop.org/series/64505/
> > 
> > But it still needs review and backporting to older kernels.
> 
> Celebration might have been premature. Hours later I've got another freeze
> with different error in amdgpu. Only this time, mouse cursor was movable
> over frozen frame right until I tried switching VT. Here's trace:
> BUG: unable to handle page fault for address: 0000000800000184
> #PF: supervisor read access in kernel mode
> #PF: error_code(0x0000) - not-present page
> PGD 0 P4D 0 
> Oops: 0000 [#1] PREEMPT SMP NOPTI
> CPU: 2 PID: 21044 Comm: kworker/u16:0 Tainted: G        W IO     
> 5.2.5-1396.g79b6a9c-HSF #1 openSUSE Tumbleweed (unreleased)
> Hardware name: Gigabyte Technology Co., Ltd. GA-990XA-UD3/GA-990XA-UD3, BIOS
> F14e 09/09/2014
> Workqueue: events_unbound commit_work
> RIP: 0010:amdgpu_dm_atomic_commit_tail+0x2e6/0xd60 [amdgpu]

Are you able to consistently reproduce this issue? Is it the same setup and
same conditions as before? I haven't been able to see it in my testing at
least.

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