[Bug 1918855] Re: Xorg xserver got signal 6 to abort

[Timo Aaltonen]

I was able to reproduce it on my RKL, but the reason was bad RAM. After
swapping it to another otherwise identical set, it works fine.

The reproducer here was running 'stress-ng --stack 0'

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Title:
  Xorg xserver got signal 6 to abort

Status in Mesa:
  Unknown
Status in OEM Priority Project:
  In Progress
Status in mesa package in Ubuntu:
  New

Bug description:
  I run checkbox job
  com.canonical.certification::memory/memory_stress_ng on focal, and the
  xserver stops unexpectedly with the following stacktrace:

  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 0: /usr/lib/xorg/Xorg (OsLookupColor+0x13c) [0x5619f3a4d59c]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 1: /lib/x86_64-linux-gnu/libpthread.so.0 (funlockfile+0x60) [0x7fae4786741f]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (gsignal+0xcb) [0x7fae476a418b]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 3: /lib/x86_64-linux-gnu/libc.so.6 (abort+0x12b) [0x7fae47683859]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) unw_get_proc_name failed: no unwind info found [-10]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 4: /usr/lib/x86_64-linux-gnu/dri/iris_dri.so (?+0x0) [0x7fae457d7aec]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 5: /usr/lib/x86_64-linux-gnu/dri/iris_dri.so (nouveau_drm_screen_create+0x25c8ec) [0x7fae46529c9c]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 6: /usr/lib/x86_64-linux-gnu/dri/iris_dri.so (__driDriverGetExtensions_zink+0x2561d) [0x7fae4582c74d]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 7: /usr/lib/xorg/modules/libglamoregl.so (glamor_destroy_pixmap+0x150) [0x7fae47007480]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) unw_get_proc_name failed: no unwind info found [-10]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 8: /usr/lib/xorg/modules/drivers/modesetting_drv.so (?+0x0) [0x7fae47040a30]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 9: /usr/lib/xorg/Xorg (BlockHandler+0xa5) [0x5619f38f0995]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 10: /usr/lib/xorg/Xorg (WaitForSomething+0x122) [0x5619f3a46c12]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 11: /usr/lib/xorg/Xorg (SendErrorToClient+0x117) [0x5619f38ebcf7]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 12: /usr/lib/xorg/Xorg (InitFonts+0x3b4) [0x5619f38effc4]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 13: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf3) [0x7fae476850b3]
  /usr/lib/gdm3/gdm-x-session[1425]: (EE) 14: /usr/lib/xorg/Xorg (_start+0x2e) [0x5619f38d9a2e]

  More info:
  I searched the Internet and got a bug with the same stacktrace:
  https://gitlab.freedesktop.org/mesa/mesa/-/issues/3468
  https://gitlab.freedesktop.org/mesa/mesa/-/issues/2859

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