KVM: arm64: Fix read-side race on updates to vcpu reset state
KVM correctly serializes writes to a vCPU's reset state, however since we do not take the KVM lock on the read side it is entirely possible to read state from two different reset requests. Cure the race for now by taking the KVM lock when reading the reset_state structure. Fixes: 358b28f0 ("arm/arm64: KVM: Allow a VCPU to fully reset itself") Signed-off-by:Oliver Upton <oupton@google.com> Signed-off-by:
Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20210818202133.1106786-2-oupton@google.com
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