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| author |   Paolo Bonzini <pbonzini@redhat.com> | 2019-07-19 18:41:10 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-07-20 09:00:47 +0200 |
| commit | 88dddc11a8d6b09201b4db9d255b3394d9bc9e57 (patch) | |
| tree | 286cb8c531c862040deb05e5746f65dacf1c9150 /Documentation | |
| parent | KVM: VMX: dump VMCS on failed entry (diff) | |
| download | linux-dev-88dddc11a8d6b09201b4db9d255b3394d9bc9e57.tar.xz linux-dev-88dddc11a8d6b09201b4db9d255b3394d9bc9e57.zip | |
KVM: nVMX: do not use dangling shadow VMCS after guest reset
If a KVM guest is reset while running a nested guest, free_nested will
disable the shadow VMCS execution control in the vmcs01. However,
on the next KVM_RUN vmx_vcpu_run would nevertheless try to sync
the VMCS12 to the shadow VMCS which has since been freed.
This causes a vmptrld of a NULL pointer on my machime, but Jan reports
the host to hang altogether. Let's see how much this trivial patch fixes.
Reported-by: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Liran Alon <liran.alon@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions