[BUG] kernel >= 5.10.48 crash

minus at tilde.team minus at tilde.team
Sat Jul 17 15:27:25 PDT 2021

Hello, I hope that this is the right place to ask. I tried to open
an issue on github raspberrypi/linux but my account was flagged,
so I searched for another contact, since I don't know when it will
be unflagged.

I'm a new archlinuxarm user using a raspberry pi 4, and the
information required on gh would be:
Model: Raspberry Pi 4 Model B Rev 1.2
  Jul 14 2021 14:20:55
  (c) 2012 Broadcom
  1ecd7d49359f3b48737f1a9e33c2f1513f90743d (clean) (release) (start)
Kernel version: Linux version 5.10.48-1-ARCH

What happen is that when I use wayland with this kernel
(5.10.48, commit 4a1f59200d36993f6b32742c03c154ae275bd89c)
the system freezes, while using (5.10.46-2, commit
64f5ffe846252ea43731ee8959ad4c13c70b9101) it doesn't.

On dmesg I get the following error:

[ +29.853154] Unable to handle kernel paging request at virtual
  address dead000000000108
[  +0.008129] Mem abort info:
[  +0.002943]   ESR = 0x96000044
[  +0.003351]   EC = 0x25: DABT (current EL), IL = 32 bits
[  +0.005507]   SET = 0, FnV = 0
[  +0.003291]   EA = 0, S1PTW = 0
[  +0.003427] Data abort info:
[  +0.003084]   ISV = 0, ISS = 0x00000044
[  +0.004094]   CM = 0, WnR = 1
[  +0.003173] [dead000000000108] address between user and kernel
  address ranges

I checked this by making an image containing the kernel,
sway (wayland compositor) and their dependencies (relative to
archlinux arm). The config.txt file contains the following:

initramfs initramfs-linux.img followkernel

To reproduce, I start sway and move the mouse and press
some keys for few seconds until it freezes.

I've attached the full dmesg log to this email.

Thank you.
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