[Qemu-devel] [Bug 1838465] [NEW] qemu-system-x86_64 kernel panic 30% of the time starting up VM

[_]

Public bug reported:

I have created a Fedora Core 5 x86_64 VM image. When I run the image
using QEMU on Windows the VM hangs while loading the kernel about 30% of
the time. I am trying to use this VM with a CI software, looking at the
history the build failed 27 out of 79 attempts. QEMU 3.0.0 is installed
on the CI machine. I have tried using the exact same image using QEMU on
Linux (Ubuntu) and found the image boot successful every time (40+
attempts). The VM image is fairly old it was created using QEMU 0.11.1.

I have tried multiple versions on QEMU on windows; 0.11.1, 2.12.1, and
3.0.0 all of them fail randomly. I can reproduce the issue on several
different Windows 10 computers.

The command I am using to start the VM is “qemu-system-x86_64.exe -cpu
qemu64 -smp cores=2 -device e1000,netdev=net0 -boot menu=off -m 1G
-drive `"file=C:\qimages\Fedora-Core-5-x64.qcow2,index=0,media=disk`"
-snapshot -netdev user,id=net0,hostfwd=tcp::10022-:22”

I can provide the qcow image but it is somewhat large coming it at
4.15GB so I’m not sure what would be the best way to transfer it.

** Affects: qemu
     Importance: Undecided
         Status: New

** Attachment added: "kernelpanic.jpg"
   
https://bugs.launchpad.net/bugs/1838465/+attachment/5280085/+files/kernelpanic.jpg

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1838465

Title:
  qemu-system-x86_64 kernel panic 30% of the time starting up VM

Status in QEMU:
  New

Bug description:
  I have created a Fedora Core 5 x86_64 VM image. When I run the image
  using QEMU on Windows the VM hangs while loading the kernel about 30%
  of the time. I am trying to use this VM with a CI software, looking at
  the history the build failed 27 out of 79 attempts. QEMU 3.0.0 is
  installed on the CI machine. I have tried using the exact same image
  using QEMU on Linux (Ubuntu) and found the image boot successful every
  time (40+ attempts). The VM image is fairly old it was created using
  QEMU 0.11.1.

  I have tried multiple versions on QEMU on windows; 0.11.1, 2.12.1, and
  3.0.0 all of them fail randomly. I can reproduce the issue on several
  different Windows 10 computers.

  The command I am using to start the VM is “qemu-system-x86_64.exe -cpu
  qemu64 -smp cores=2 -device e1000,netdev=net0 -boot menu=off -m 1G
  -drive `"file=C:\qimages\Fedora-Core-5-x64.qcow2,index=0,media=disk`"
  -snapshot -netdev user,id=net0,hostfwd=tcp::10022-:22”

  I can provide the qcow image but it is somewhat large coming it at
  4.15GB so I’m not sure what would be the best way to transfer it.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1838465/+subscriptions