Bug#1150321: xserver-xorg-core: X server 2:21.1.25-1 crashes

[Andrey Rakhmatullin]

It also crashes for me. Radeon RX 7800 XT, sddm, kernel both 7.2.6 and 7.2.10, firmware-amd-graphics both 20260810-1 and 20260916-1, everything else from current sid. Rolling back xserver-xorg-core and xserver-common to 2:21.1.24-1 fixes it.

One crash, with my usual weird xrandr --scale setup:

(II) AMDGPU(0): Allocate new frame buffer 7680x2160
(II) AMDGPU(0):  => pitch 30720 bytes
(EE) Backtrace:
(EE) 0: /usr/lib/xorg/Xorg (?+0x0) [0x559f62adaaaf]
(EE) 1: /usr/lib/x86_64-linux-gnu/libc.so.6 (?+0x0) [0x7efbffb246b0]
(EE) 2: /usr/lib/xorg/modules/drivers/amdgpu_drv.so (?+0x0) [0x7efbff463a3b]
(EE) 3: /usr/lib/xorg/Xorg (?+0x0) [0x559f62a37fec]
(EE) 4: /usr/lib/xorg/Xorg (?+0x0) [0x559f62a39f7b]
(EE) 5: /usr/lib/xorg/Xorg (miPaintWindow+0x274) [0x559f62ab7dd4]
(EE) 6: /usr/lib/xorg/Xorg (miWindowExposures+0x10d) [0x559f62ab7a6d]
(EE) 7: /usr/lib/xorg/Xorg (?+0x0) [0x559f6299a9a3]
(EE) 8: /usr/lib/xorg/Xorg (miHandleValidateExposures+0x72) [0x559f62acd9c2]
(EE) 9: /usr/lib/xorg/Xorg (SetRootClip+0x1f0) [0x559f62975fd0]
(EE) 10: /usr/lib/xorg/Xorg (?+0x0) [0x559f629cbb72]
(EE) 11: /usr/lib/xorg/Xorg (?+0x0) [0x559f629c78a4]
(EE) 12: /usr/lib/xorg/Xorg (ProcRRSetScreenSize+0x1ba) [0x559f62a1f3ea]
(EE) 13: /usr/lib/xorg/Xorg (?+0x0) [0x559f6293fc88]
(EE) 14: /usr/lib/xorg/Xorg (?+0x0) [0x559f62944466]
(EE) 15: /usr/lib/x86_64-linux-gnu/libc.so.6 (__libc_start_call_main+0x7a) 
[0x7efbffb0dfba]
(EE) 16: /usr/lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main_alias_2+0x87) 
[0x7efbffb0e0d7]
(EE) 17: /usr/lib/xorg/Xorg (_start+0x21) [0x559f6292a281]
(EE) Segmentation fault at address 0x0

Another, with just one screen connected and no xrandr:

(EE) 0: /usr/lib/xorg/Xorg (?+0x0) [0x560d10db0aaf]
(EE) 1: /usr/lib/x86_64-linux-gnu/libc.so.6 (?+0x0) [0x7f2c1fa1d6b0]
(EE) 2: /usr/lib/xorg/modules/drivers/amdgpu_drv.so (?+0x0) [0x7f2c1f35ca55]
(EE) 3: /usr/lib/xorg/Xorg (?+0x0) [0x560d10d0dfec]
(EE) 4: /usr/lib/xorg/Xorg (DamageDamageRegion+0x19) [0x560d10d12619]
(EE) 5: /usr/lib/xorg/Xorg (?+0x0) [0x560d10d0b9d5]
(EE) 6: /usr/lib/xorg/Xorg (?+0x0) [0x560d10d0a56d]
(EE) 7: /usr/lib/xorg/Xorg (?+0x0) [0x560d10c15c88]
(EE) 8: /usr/lib/xorg/Xorg (?+0x0) [0x560d10c1a466]
(EE) 9: /usr/lib/x86_64-linux-gnu/libc.so.6 (__libc_start_call_main+0x7a) 
[0x7f2c1fa06fba]
(EE) 10: /usr/lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main_alias_2+0x87) 
[0x7f2c1fa070d7]
(EE) 11: /usr/lib/xorg/Xorg (_start+0x21) [0x560d10c00281]
(EE) Segmentation fault at address 0x0

(sorry, not going to install debug symbols and do all of this again)

--
WBR, wRAR

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