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Bug #14067

open

Panic after boot with more than 12 CPUs as QEMU guest

Added by Stephen Gregoratto about 1 month ago. Updated about 1 month ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
kernel
Start date:
Due date:
% Done:

0%

Estimated time:
Difficulty:
Medium
Tags:
Gerrit CR:

Description

My System:
Arch Linux, kernel 5.13.13-zen1-1-zen
QEMU: system-x86-64 v.6.1.0
Guest OS: OmniOS CE bloody, latest updates (but it also happens on OpenIndiana)

Booting an Illumos guest system with more than 12 CPUs causes a kernel panic shortly after boot.
The quest config I use at the moment is:

qemu-system-x86_64 enable-kvm -m 15360 -smp 13 -hda omnios-zig.qcow2 -net nic -net user,hostfwd=tcp::2229:22 -nographic -no-reboot

but I've also managed to reproduced it using this minimal version:

qemu-system-x86_64 -m 1024 -smp 13 -hda omnios-zig.qcow2 -nographic -no-reboot


Files

oops.txt (3.47 KB) oops.txt Stephen Gregoratto, 2021-09-11 01:21 AM
Actions #1

Updated by Stephen Gregoratto about 1 month ago

I've poked around QEMU's settings, and I now believe that this is a CPU feature detection problem. I don't have a log to share, but the boot log showed that it was warning about old firmware regarding an Opteron cpu bug. Running QEMU with -cpu host, fixes all my issues.

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