https://bugzilla.kernel.org/show_bug.cgi?id=82211
Bug ID: 82211
Summary: [Nested xen on kvm] L1 guest panic and reboot when L1
guest boot up.
Product: Virtualization
Version: unspecified
Kernel Version: 3.16.0
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: kvm
Assignee: [email protected]
Reporter: [email protected]
Regression: No
Environment:
------------
Host OS (ia32/ia32e/IA64):ia32e
Guest OS (ia32/ia32e/IA64):ia32e
Guest OS Type (Linux/Windows):Linux
kvm.git Commit:c77dcacb397519b6ade8f08201a4a90a7f4f751e
qemu.git Commit:2d591ce2aeebf9620ff527c7946844a3122afeec
Host Kernel Version:3.16.0
Hardware:Romley_EP, Haswell_EP, Ivytown_EP
Bug detailed description:
--------------------------
L1(xen on kvm) guest panic then reboot continuously when boot up L1 guest.
note:
this is a kernel bug:
kvm.git + qemu.git = result
c77dcacb + 2d591ce2 = bad
9f6226a7 + 2d591ce2 = good
Reproduce steps:
----------------
1. create guest
qemu-system-x86_64 -enable-kvm -m 4G -smp 2 -net nic,macaddr=00:13:13:51:51:15
-net tap,script=/etc/kvm/qemu-ifup nested-xen.qcow -cpu host
Current result:
----------------
L1 guest panic then reboot continuously
Expected result:
----------------
L1 guest boot up correctly
Basic root-causing log:
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