[Qemu-devel] [Bug 1815889] Re: qemu-system-x86_64 crashed with signal 31 in __pthread_setaffinity_new()

[Christian Ehrhardt ]

@Ubuntu-Desktop Team (now subscribed) - is there a chance we can revert [1] in 
mesa before it will be released with Disco for now. That would be needed until 
an accepted solution throughout the stack of libvirt/qemu/mesa is found?
Otherwise using GL backed qemu graphics will fail as outlined in the bug.

Once such a cross-package solution to the problem is found we can (if
needed at all) SRU back the set of changes to all components required.

[1]:
https://github.com/mesa3d/mesa/commit/d877451b48a59ab0f9a4210fc736f51da5851c9a

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https://bugs.launchpad.net/bugs/1815889

Title:
  qemu-system-x86_64 crashed with signal 31 in
  __pthread_setaffinity_new()

Status in Mesa:
  Unknown
Status in QEMU:
  New
Status in mesa package in Ubuntu:
  New
Status in qemu package in Ubuntu:
  Triaged

Bug description:
  Unable to launch Default Fedora 29 images in gnome-boxes

  ProblemType: Crash
  DistroRelease: Ubuntu 19.04
  Package: qemu-system-x86 1:3.1+dfsg-2ubuntu1
  ProcVersionSignature: Ubuntu 4.19.0-12.13-generic 4.19.18
  Uname: Linux 4.19.0-12-generic x86_64
  ApportVersion: 2.20.10-0ubuntu20
  Architecture: amd64
  Date: Thu Feb 14 11:00:45 2019
  ExecutablePath: /usr/bin/qemu-system-x86_64
  KvmCmdLine: COMMAND         STAT  EUID  RUID   PID  PPID %CPU COMMAND
  MachineType: Dell Inc. Precision T3610
  ProcEnviron: PATH=(custom, user)
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.19.0-12-generic 
root=UUID=939b509b-d627-4642-a655-979b44972d17 ro splash quiet vt.handoff=1
  Signal: 31
  SourcePackage: qemu
  StacktraceTop:
   __pthread_setaffinity_new (th=<optimized out>, cpusetsize=128, 
cpuset=0x7f5771fbf680) at ../sysdeps/unix/sysv/linux/pthread_setaffinity.c:34
   () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
   () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
   start_thread (arg=<optimized out>) at pthread_create.c:486
   clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
  Title: qemu-system-x86_64 crashed with signal 31 in 
__pthread_setaffinity_new()
  UpgradeStatus: Upgraded to disco on 2018-11-14 (91 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo video
  dmi.bios.date: 11/14/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A18
  dmi.board.name: 09M8Y8
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A01
  dmi.chassis.type: 7
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvrA18:bd11/14/2018:svnDellInc.:pnPrecisionT3610:pvr00:rvnDellInc.:rn09M8Y8:rvrA01:cvnDellInc.:ct7:cvr:
  dmi.product.name: Precision T3610
  dmi.product.sku: 05D2
  dmi.product.version: 00
  dmi.sys.vendor: Dell Inc.

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