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Tasklist

FS#69962 - Black screen after updating to 5.11-x

Attached to Project: Arch Linux
Opened by Cyber Knight (cyberknight_777) - Friday, 12 March 2021, 16:49 GMT
Last edited by Andreas Radke (AndyRTR) - Tuesday, 30 March 2021, 11:49 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To Jan Alexander Steffens (heftig)
Architecture x86_64
Severity Critical
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description: getting a black screen after updating to 5.11-x on laptop with amdgpu ext4fs


Additional info:
* package version(s) on every 5.11-x Linux package
* config and/or log files etc.
* link to upstream bug report, if any

Steps to reproduce:
Update to 5.11-x
Reboot
This task depends upon

Closed by  Andreas Radke (AndyRTR)
Tuesday, 30 March 2021, 11:49 GMT
Reason for closing:  Fixed
Additional comments about closing:  Issue resolved in 5.11.10
Comment by loqs (loqs) - Friday, 12 March 2021, 18:09 GMT
You have not attached any logs. Please post the journal for a boot with and without the issue.
Comment by Jon L (JonBL) - Wednesday, 17 March 2021, 14:10 GMT
Does adding amdgpu.vm_update_mode=1 or amdgpu.vm_update_mode=3 to the kernel command line help?

I'm not on vanilla so I won't clutter here with the full stack trace, suffice to say 5.11 exposed some broken logic in AMD's code.

KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 5 PID: 964 Comm: Xorg:cs0 Tainted: G O T 5.11.6-hardened1-1 #2
Read of size 8 at addr ffff8882361523a0 by task Xorg:cs0/964
BUG: KASAN: use-after-free in amdgpu_vm_update_pde+0x350/0x410 [amdgpu]
Comment by Cyber Knight (cyberknight_777) - Thursday, 18 March 2021, 12:03 GMT
Tried adding that amdgpu thing for both 1 and 3 and still doesn't work
Comment by Jon L (JonBL) - Tuesday, 23 March 2021, 04:27 GMT
When all else fails: break=premount

With any luck it'll allow you to mount the pstore and get to the last_kmsg
Comment by Oz Dror (odror) - Sunday, 28 March 2021, 05:27 GMT
I have the same issue after upgrading to mesa.0.1-1 on kernel 5.11. I have Nvidia gpu, but AMD CPU.
Comment by Ahmet OZKESEK (aozkesek) - Monday, 29 March 2021, 15:54 GMT
When it is happen, does switching to other consoles by pressing the ctrl+alt+<f2..f6> help you?
My GDM stucks sometimes, I do switch other console then come back the first console as workaround.
Comment by Cyber Knight (cyberknight_777) - Monday, 29 March 2021, 16:14 GMT
My issue is fixed in 5.11.10

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