Crash after update to linux-cachy 6.10

Issues & Assistance
1

Hi all, I’m here to report a possible memory leak after I update to linux-cachy 6.10.

I update my system with pacman -Syu daily. Yesterday linux-cachy (6.9.9-2 → 6.10.0-2) and a bunch of KDE stuff (6.3.0 → 6.4.0) were updated.

I first noticed choppiness while playing Dota2, the game periodically freezes for like 3-5 seconds. There were 5 very obvious freezes during a 30mins match.

Then I decided to watch twitch streamings in cachy-browser and after a while the whole system crashed. At first I was able to switch to tty3, but 2mins later tty3 crashed as well. I hard powered off and restarted my PC to continue the game I was watching, and the system crashed again in like 30mins.

I suppose it’s a memory leak?

I’m using znver4 repository, CPU is Ryzen 7840H and desktop environment is KDE.

I found something in logs which may be helpful.

Jul 16 10:13:32 PM kwin_wayland: kwin_wayland_drm: Pageflip timed out! This is a kernel bug
Jul 16 10:13:27 PM kwin_wayland: kwin_wayland_drm: Pageflip timed out! This is a kernel bug
Jul 16 10:13:22 PM kernel: amdgpu 0000:c6:00.0: amdgpu: RW: 0x0
Jul 16 10:13:22 PM kernel: amdgpu 0000:c6:00.0: amdgpu: MAPPING_ERROR: 0x0
Jul 16 10:13:22 PM kernel: amdgpu 0000:c6:00.0: amdgpu: PERMISSION_FAULTS: 0x1
Jul 16 10:13:22 PM kernel: amdgpu 0000:c6:00.0: amdgpu: WALKER_ERROR: 0x0
Jul 16 10:13:22 PM kernel: amdgpu 0000:c6:00.0: amdgpu: MORE_FAULTS: 0x1
Jul 16 10:13:22 PM kernel: amdgpu 0000:c6:00.0: amdgpu: Faulty UTCL2 client ID: unknown (0x1d)
Jul 16 10:13:22 PM kernel: amdgpu 0000:c6:00.0: amdgpu: MMVM_L2_PROTECTION_FAULT_STATUS:0x00103A11
Jul 16 10:13:22 PM kernel: amdgpu 0000:c6:00.0: amdgpu: in page starting at address 0x000080010b584000 from client 18
Jul 16 10:13:22 PM kernel: amdgpu 0000:c6:00.0: amdgpu: in process RDD Process pid 2433 thread cachy-brow:cs0 pid 2493)
Jul 16 10:13:22 PM kernel: amdgpu 0000:c6:00.0: amdgpu: [mmhub] page fault (src_id:0 ring:8 vmid:1 pasid:32789)

1 Like
2

Hi,

Thanks for your report. Yes, this seems likely like an amd gpu issue.

Does this only happening, when using the cachy-browser or in general?
Does downgrading to the 6.9 Kernel fixes the issue?

sudo pacman -U https://archive.cachyos.org/archive/cachyos-v3/linux-cachyos-6.9.9-2-x86_64_v3.pkg.tar.zst https://archive.cachyos.org/archive/cachyos-v3/linux-cachyos-headers-6.9.9-2-x86_64_v3.pkg.tar.zst

Edit:
Do you see some increased vram usage over time? So far it does not look like a memory leak.

1 Like
3

Thanks peter.

I think it’s not only cachy-browser, because I also experienced very unusual choppiness when playing dota2.

I will try to downgraded and report back.

I do see increased vram usage over time.

4

They have these kwin pageflip errors here on a non amd system too Issue with apparent random system freeze - #32 by Totte

5

Can you try something that’s not KDE?

6

Does disable tearing in the KDE Display Settings help?

7

I’m here to report that downgrade to kernel linux-cachyos-6.9.9 works.
Now everything works normally.

Vanilla archlinux did not push kernel 6.10 until now, maybe they found something wrong.

8

I tried linux-cachyos-6.10.0-3 today with no luck, system crashed after like 1mins cachy-browser video watching.

9

Please fill a bugreport to AMD

10

I think it’s been happening without AMD hardware too Issue with apparent random system freeze - #30 by Totte

11

How did you downgrade to 6.9.9? I can’t find it in the Kernel manager…

12

sudo pacman -U https://archive.cachyos.org/archive/cachyos-v3/linux-cachyos-6.9.9-2-x86_64_v3.pkg.tar.zst https://archive.cachyos.org/archive/cachyos-v3/linux-cachyos-headers-6.9.9-2-x86_64_v3.pkg.tar.zst

Even tough, I would suggest you to just use the lts kernel

13

Reported at 7840h/780m system crash after update to linux kernel 6.10 (#3497) · Issues · drm / amd · GitLab

1 Like
14

Just to let you guys know that I got a complete system freeze after downgrading to LTS-kernel (using Shaders) unfortunately.

15

You mean, while compiling shaders?

16

No just random system freeze using the computer, I have noticed that when using Shaders as a desktop background the system freezes. If I switch to just an image as desktop background the computer doesn’t seem to freeze.