KVM: Correct kvm_init() error paths not freeing bad_pge.
Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index c74fb44..058366f 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -1311,7 +1311,7 @@
r = kvm_arch_init(opaque);
if (r)
- goto out4;
+ goto out_fail;
bad_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
@@ -1322,29 +1322,29 @@
r = kvm_arch_hardware_setup();
if (r < 0)
- goto out;
+ goto out_free_0;
for_each_online_cpu(cpu) {
smp_call_function_single(cpu,
kvm_arch_check_processor_compat,
&r, 0, 1);
if (r < 0)
- goto out_free_0;
+ goto out_free_1;
}
on_each_cpu(hardware_enable, NULL, 0, 1);
r = register_cpu_notifier(&kvm_cpu_notifier);
if (r)
- goto out_free_1;
+ goto out_free_2;
register_reboot_notifier(&kvm_reboot_notifier);
r = sysdev_class_register(&kvm_sysdev_class);
if (r)
- goto out_free_2;
+ goto out_free_3;
r = sysdev_register(&kvm_sysdev);
if (r)
- goto out_free_3;
+ goto out_free_4;
/* A kmem cache lets us meet the alignment requirements of fx_save. */
kvm_vcpu_cache = kmem_cache_create("kvm_vcpu", vcpu_size,
@@ -1352,7 +1352,7 @@
0, NULL);
if (!kvm_vcpu_cache) {
r = -ENOMEM;
- goto out_free_4;
+ goto out_free_5;
}
kvm_chardev_ops.owner = module;
@@ -1370,21 +1370,23 @@
out_free:
kmem_cache_destroy(kvm_vcpu_cache);
-out_free_4:
+out_free_5:
sysdev_unregister(&kvm_sysdev);
-out_free_3:
+out_free_4:
sysdev_class_unregister(&kvm_sysdev_class);
-out_free_2:
+out_free_3:
unregister_reboot_notifier(&kvm_reboot_notifier);
unregister_cpu_notifier(&kvm_cpu_notifier);
-out_free_1:
+out_free_2:
on_each_cpu(hardware_disable, NULL, 0, 1);
-out_free_0:
+out_free_1:
kvm_arch_hardware_unsetup();
+out_free_0:
+ __free_page(bad_page);
out:
kvm_arch_exit();
kvm_exit_debug();
-out4:
+out_fail:
return r;
}
EXPORT_SYMBOL_GPL(kvm_init);