Arch Linux

cMard

Member

Registered: 2024-03-12

Posts: 5

Kernel derefernces a null ptr on shutdown

Every time i shutdown my computer it gives a kernel panic. Logs are not saved in journalctl, but i was able to see logs from my phone by recording on shutdown and then slowing the video.
Here's kernel panic log

I'm not sure why this happens, except that kernel tries to dereference a null ptr (first line of kernel panic). This only happens on shutdown and poweroff (I mostly times use shutdown). It doesn't happen on boot or reboot.

More Info:

OS: Arch Linux x86_64 
Host: ASUS TUF Dash F15 FX516PE_FX516PE 1.0 
Kernel: 6.8.4-arch1-1 
DE: Hyprland 
WM: sway 
CPU: 11th Gen Intel i5-11300H (8) @ 4.400GHz 
GPU: NVIDIA GeForce RTX 3050 Ti Mobile (Primary)
GPU: Intel TigerLake-LP GT2 [Iris Xe Graphics] (Secondary)
Memory: 7638MiB 

Can anyone say what's the cause of this and how can i prevent it?

Last edited by cMard (2024-04-08 12:13:59)

loqs

Member

Registered: 2014-03-06

Posts: 17,458

Re: Kernel derefernces a null ptr on shutdown

nvndia_uvm control group issue?

cMard

Member

Registered: 2024-03-12

Posts: 5

Re: Kernel derefernces a null ptr on shutdown

How can I downgrade to nvidia-open-dkms-545? I Couldn't find it on pacman.

seth

Member

Registered: 2012-09-03

Posts: 51,772

Re: Kernel derefernces a null ptr on shutdown

Afaiu nvidia-open isn't affected anyway? Are you using that right now?

pacman -Qs nvidia
sudo journalctl -b | curl -F 'file=@-' 0x0.st

As for downgrading, https://wiki.archlinux.org/title/ALA - but you cannot use the 545xx dkms module w/ the 6.8 kernels anymore, you'd have to use the LTS kernel instead or patch the 545xx kernels to not use the GPL protected symbols.

Can you shut down w/o an error if you explicitly unload nvidia_uvm first?

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