KVM: MMU: fix missing percpu counter destroy
commit ad05c88266b4cce1c820928ce8a0fb7690912ba1
(KVM: create aggregate kvm_total_used_mmu_pages value)
introduce percpu counter kvm_total_used_mmu_pages but never
destroy it, this may cause oops when rmmod & modprobe.
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Acked-by: Tim Pepper <lnxninja@linux.vnet.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index c2ac700..54a5026 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3185,6 +3185,7 @@
void kvm_mmu_module_exit(void)
{
mmu_destroy_caches();
+ percpu_counter_destroy(&kvm_total_used_mmu_pages);
unregister_shrinker(&mmu_shrinker);
}
@@ -3207,7 +3208,9 @@
if (!mmu_page_header_cache)
goto nomem;
- percpu_counter_init(&kvm_total_used_mmu_pages, 0);
+ if (percpu_counter_init(&kvm_total_used_mmu_pages, 0))
+ goto nomem;
+
register_shrinker(&mmu_shrinker);
return 0;