[Qemu-devel] [Bug 1597138] [NEW] Deadlock on Windows 10 pop-up

[Qemu-devel] [Bug 1597138] [NEW] Deadlock on Windows 10 pop-up

[Shannon Barber]

Public bug reported:

I was able to install and can log in but whenever a pop-up is attempted the VM appears to deadlock.
I can still kill -9 the process and recover but the VM and the QEmu console both hang with no error output.

At first I thought it was UAC but renaming a file causes a pop-up and that also deadlocks.
I rebuilt QEmu 2.6.0 with debug info and did a thread back-trace once the deadlock occurs.
See the attachment for the trace.

I am attempting to setup GPU pass-thru with a GTX 970 but this deadlock
occurs with -vga std (and no GPU pass-thru) as well.

(I cannot install or start Windows 7 but I am told this is a known bug.)

** Affects: qemu
     Importance: Undecided
         Status: New

** Attachment added: "qemu_deadlock_bt.txt"
   https://bugs.launchpad.net/bugs/1597138/+attachment/4691950/+files/qemu_deadlock_bt.txt

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Title:
  Deadlock on Windows 10 pop-up

Status in QEMU:
  New

Bug description:
  I was able to install and can log in but whenever a pop-up is attempted the VM appears to deadlock.
  I can still kill -9 the process and recover but the VM and the QEmu console both hang with no error output.

  At first I thought it was UAC but renaming a file causes a pop-up and that also deadlocks.
  I rebuilt QEmu 2.6.0 with debug info and did a thread back-trace once the deadlock occurs.
  See the attachment for the trace.

  I am attempting to setup GPU pass-thru with a GTX 970 but this
  deadlock occurs with -vga std (and no GPU pass-thru) as well.

  (I cannot install or start Windows 7 but I am told this is a known
  bug.)

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1597138/+subscriptions

[Qemu-devel] [Bug 1597138] Re: Deadlock on Windows 10 pop-up

[Shannon Barber]

Removing the soundhw hda device prevents the deadlock.

Below was my QEmu start-up command-line:

qemu-system-x86_64 \
-enable-kvm \
-m 8192 \
-drive if=pflash,format=raw,readonly,file=./ovmf-x64/OVMF-pure-efi.fd \
-drive if=pflash,format=raw,file=./OVMF-pure-efi-Win10.fd \
-drive file=/dev/Stuff/Windows10,format=raw,if=virtio,cache=none \
-drive file=virtio-win.iso,id=virtiocd,if=none,format=raw -device ide-cd,bus=ide.1,drive=virtiocd \
-device vfio-pci,host=01:00.0,addr=09.0,multifunction=on,x-vga=on \
-device vfio-pci,host=01:00.1,addr=09.1 \
-usb -usbdevice host:003.006 \
-cpu core2duo,+nx,kvm=off \
-vga none \
-soundhw hda

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You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1597138

Title:
  Deadlock on Windows 10 pop-up

Status in QEMU:
  New

Bug description:
  I was able to install and can log in but whenever a pop-up is attempted the VM appears to deadlock.
  I can still kill -9 the process and recover but the VM and the QEmu console both hang with no error output.

  At first I thought it was UAC but renaming a file causes a pop-up and that also deadlocks.
  I rebuilt QEmu 2.6.0 with debug info and did a thread back-trace once the deadlock occurs.
  See the attachment for the trace.

  I am attempting to setup GPU pass-thru with a GTX 970 but this
  deadlock occurs with -vga std (and no GPU pass-thru) as well.

  (I cannot install or start Windows 7 but I am told this is a known
  bug.)

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1597138/+subscriptions

[Bug 1597138] Re: Deadlock on Windows 10 pop-up

[Thomas Huth]

The QEMU project is currently considering to move its bug tracking to another system. For this we need to know which bugs are still valid and which could be closed already. Thus we are setting older bugs to "Incomplete" now.
If you still think this bug report here is valid, then please switch the state back to "New" within the next 60 days, otherwise this report will be marked as "Expired". Or mark it as "Fix Released" if the problem has be

** Changed in: qemu
       Status: New => Incomplete

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Title:
  Deadlock on Windows 10 pop-up

Status in QEMU:
  Incomplete

Bug description:
  I was able to install and can log in but whenever a pop-up is attempted the VM appears to deadlock.
  I can still kill -9 the process and recover but the VM and the QEmu console both hang with no error output.

  At first I thought it was UAC but renaming a file causes a pop-up and that also deadlocks.
  I rebuilt QEmu 2.6.0 with debug info and did a thread back-trace once the deadlock occurs.
  See the attachment for the trace.

  I am attempting to setup GPU pass-thru with a GTX 970 but this
  deadlock occurs with -vga std (and no GPU pass-thru) as well.

  (I cannot install or start Windows 7 but I am told this is a known
  bug.)

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1597138/+subscriptions

[Bug 1597138] Re: Deadlock on Windows 10 pop-up

[Launchpad Bug Tracker]

[Expired for QEMU because there has been no activity for 60 days.]

** Changed in: qemu
       Status: Incomplete => Expired

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Title:
  Deadlock on Windows 10 pop-up

Status in QEMU:
  Expired

Bug description:
  I was able to install and can log in but whenever a pop-up is attempted the VM appears to deadlock.
  I can still kill -9 the process and recover but the VM and the QEmu console both hang with no error output.

  At first I thought it was UAC but renaming a file causes a pop-up and that also deadlocks.
  I rebuilt QEmu 2.6.0 with debug info and did a thread back-trace once the deadlock occurs.
  See the attachment for the trace.

  I am attempting to setup GPU pass-thru with a GTX 970 but this
  deadlock occurs with -vga std (and no GPU pass-thru) as well.

  (I cannot install or start Windows 7 but I am told this is a known
  bug.)

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1597138/+subscriptions