[Bug 1918855] Re: Xorg crashed with SIGABRT when under memory pressure

[Launchpad Bug Tracker]

This bug was fixed in the package mesa - 21.0.3-0ubuntu0.2

---------------
mesa (21.0.3-0ubuntu0.2) hirsute; urgency=medium

  * amd-add-missing-line-from-backport.diff: Fix a regression with
    radeonsi caused by a bad backport. (LP: #1934783)

mesa (21.0.3-0ubuntu0.1) hirsute; urgency=medium

  * New upstream release. (LP: #1925434)
    - drisw-move-zink-down.diff dropped, upstream
  * Migrate to llvm-12. (LP: #1932311)
  * iris-avoid-abort-if-enomem.diff: Don't abort when out of memory.
    (LP: #1918855)

 -- Timo Aaltonen <tjaalton at debian.org>  Mon, 19 Jul 2021 22:26:12 +0300

** Changed in: mesa (Ubuntu Hirsute)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1918855

Title:
  Xorg crashed with SIGABRT when under memory pressure

Status in OEM Priority Project:
  Triaged
Status in mesa package in Ubuntu:
  Fix Released
Status in mesa source package in Focal:
  Fix Released
Status in mesa source package in Hirsute:
  Fix Released

Bug description:
  == SRU Justification ==
  [Impact]
  When the system is under memory pressure, the entire desktop session may crash.

  [Fix]
  Commit f9d8d9acbb6a620684fb4dac4affe25816587d92 ("iris: Avoid abort() if kernel can't allocate memory")

  [Test]
  Run memory stress and the session crashed in less than 5 minutes.
  With the fix applied, run memory stress for 24 hours and the desktop session is still alive.

  [Where problems could occur]
  Doing a reset might make the system even more sluggish when under memory pressure.

  
  == Original bug report ==
  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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