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KVM: Explicity initialize cpus_hardware_enabled

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Under CONFIG_MAXSMP, cpus_hardware_enabled is allocated from the heap and
not statically initialized.  This causes a crash on reboot when kvm thinks
vmx is enabled on random nonexistent cpus and accesses nonexistent percpu
lists.

Fix by explicitly clearing the variable.

Cc: stable@kernel.org
Reported-and-tested-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2009-06-06 12:34:39 +03:00
parent ccc0d38ec1
commit a4c0364be3
1 changed files with 1 additions and 0 deletions
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1
virt/kvm/kvm_main.c
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@ -2305,6 +2305,7 @@ int kvm_init(void *opaque, unsigned int vcpu_size,
r = -ENOMEM; r = -ENOMEM;
goto out_free_0; goto out_free_0;
} }
cpumask_clear(cpus_hardware_enabled);
r = kvm_arch_hardware_setup(); r = kvm_arch_hardware_setup();
if (r < 0) if (r < 0)