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@xxxxxxxxxxxxxx>
---
arch/x86/kvm/mmu.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index f52a965..ef485db 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3190,6 +3190,7 @@ static void mmu_destroy_caches(void)
void kvm_mmu_module_exit(void)
{
mmu_destroy_caches();
+ percpu_counter_destroy(&kvm_total_used_mmu_pages);
unregister_shrinker(&mmu_shrinker);
}
@@ -3212,7 +3213,9 @@ int kvm_mmu_module_init(void)
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;
--
1.7.0.4
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