[Bug 215977] New: kvm BUG: kernel NULL pointer dereference, address: 000000000000000b

[Bug 215977] New: kvm BUG: kernel NULL pointer dereference, address: 000000000000000b

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=215977

            Bug ID: 215977
           Summary: kvm BUG: kernel NULL pointer dereference, address:
                    000000000000000b
           Product: Virtualization
           Version: unspecified
    Kernel Version: 5.17.7
          Hardware: Intel
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: kvm
          Assignee: virtualization_kvm@kernel-bugs.osdl.org
          Reporter: dabo+kernel.org@devconsole.de
        Regression: No

Created attachment 300957
  --> https://bugzilla.kernel.org/attachment.cgi?id=300957&action=edit
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

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[Bug 215977] kvm BUG: kernel NULL pointer dereference, address: 000000000000000b

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=215977

Sean Christopherson (seanjc@google.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |seanjc@google.com

--- Comment #1 from Sean Christopherson (seanjc@google.com) ---
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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