Arch Linux

Description:
update to latest package cause xorg-server to crash.
Updating packages:
xorg-server
xorg-server-common
xorg-server-xvfb
from 1.20.13-2 to 21.1.1-3
and
xf86-video-ati from 19.1.0-2 to 19.1.0.r9.g5eba0006e-1

Steps to reproduce:
Update the package, restart the xorg server, watch it crash.
Reverting to previous pacakges fix the crash.

It's not possible to tell which system causes the crash between xorg-server and the xf86 ati driver since packages are mutually depends.

Full Xorg log file is included.
Here's an extract of the log:
323.839] (EE) RADEON(0): drmmode_do_crtc_dpms cannot get last vblank counter
[ 323.864] (II) RADEON(0): Allocate new frame buffer 2400x1920
[ 323.866] (II) RADEON(0): VRAM usage limit set to 208206K
[ 323.867] (EE)
[ 323.867] (EE) Backtrace:
[ 323.867] (EE) 0: /usr/lib/Xorg (xorg_backtrace+0x5b) [0x560a2e07bddb]
[ 323.867] (EE) 1: /usr/lib/Xorg (0x560a2df30000+0x156a15) [0x560a2e086a15]
[ 323.867] (EE) 2: /usr/lib/libpthread.so.0 (0x7fd22680c000+0x13870) [0x7fd22681f870]
[ 323.867] (EE)
[ 323.867] (EE) Segmentation fault at address 0x0
[ 323.867] (EE)
Fatal server error:
[ 323.867] (EE) Caught signal 11 (Segmentation fault). Server aborting
[ 323.867] (EE)
[ 323.867] (EE)