https://bugzilla.kernel.org/show_bug.cgi?id=205853
Bug ID: 205853 Summary: amdgpu kernel bug: kernel null pointer dereference Product: Drivers Version: 2.5 Kernel Version: 5.4.2 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: janpieter.sollie@dommel.be Regression: No
Created attachment 286277 --> https://bugzilla.kernel.org/attachment.cgi?id=286277&action=edit dmesg of kernel 5.4.2
possible duplicate of #204181, but as they are talking about X software, and I don't even have an xorg setup (issue happens at boot, device is only present for opencl software), I decided to file a new one: AMDGPU kernel NULL pointer dereference, address: 0000000000000d71 using fiji device lspci, dmesg and .config attached.
https://bugzilla.kernel.org/show_bug.cgi?id=205853
--- Comment #1 from Janpieter Sollie (janpieter.sollie@dommel.be) --- Created attachment 286279 --> https://bugzilla.kernel.org/attachment.cgi?id=286279&action=edit lspci -v output
https://bugzilla.kernel.org/show_bug.cgi?id=205853
--- Comment #2 from Janpieter Sollie (janpieter.sollie@dommel.be) --- Created attachment 286281 --> https://bugzilla.kernel.org/attachment.cgi?id=286281&action=edit kernel config file
https://bugzilla.kernel.org/show_bug.cgi?id=205853
--- Comment #3 from Janpieter Sollie (janpieter.sollie@dommel.be) --- the issue seems to be in the DC driver: booting the amdgpu kernel module with "dc=0" reduces the output to: ======================== [ 7.050414] amdgpu 0000:0a:00.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on uvd (-110). [ 7.151761] [drm:process_one_work] *ERROR* ib ring test failed (-110). ========================
https://bugzilla.kernel.org/show_bug.cgi?id=205853
--- Comment #4 from Janpieter Sollie (janpieter.sollie@dommel.be) --- Created attachment 286571 --> https://bugzilla.kernel.org/attachment.cgi?id=286571&action=edit working .config
this modified .config file allows the DC driver to get things up and running; however: as the IB ring error still exists, I'll have to look further into that, but that's another bug
https://bugzilla.kernel.org/show_bug.cgi?id=205853
Janpieter Sollie (janpieter.sollie@dommel.be) changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |DOCUMENTED
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