Bug 215977 - kvm BUG: kernel NULL pointer dereference, address: 000000000000000b
Summary: kvm BUG: kernel NULL pointer dereference, address: 000000000000000b
Status: NEW
Alias: None
Product: Virtualization
Classification: Unclassified
Component: kvm (show other bugs)
Hardware: Intel Linux
: P1 normal
Assignee: virtualization_kvm
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-05-14 18:18 UTC by Daniel
Modified: 2022-05-16 15:33 UTC (History)
1 user (show)

See Also:
Kernel Version: 5.17.7
Subsystem:
Regression: No
Bisected commit-id:

Attachments
journalctl -o cat -k -b -1 (61.88 KB, text/plain)
2022-05-14 18:18 UTC, Daniel 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Daniel 2022-05-14 18:18:22 UTC 
Created attachment 300957 [details]
journalctl -o cat -k -b -1

Hi,

I encountered a bug in Arch Linux after kernel upgrade from 5.17.1-arch1-1 to 5.17.7-arch1-1, when libvirtd starts a kvm accelerated qemu vm. Downgrading to 5.17.1 fixes it.

Please find journal in attachment.

Thank you.

Daniel
Comment 1 Sean Christopherson 2022-05-16 15:33:54 UTC 
Looks like the FPU XSAVE bug[1] that affects older CPUs, fix is pending[2].

[1] https://lore.kernel.org/all/20220502022959.18aafe13.zkaspar82@gmail.com
[2] https://lore.kernel.org/all/20220504001219.983513-1-seanjc@google.com
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