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KVM: MMU: audit: unregister audit tracepoints before module unloaded

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fix:

Call Trace:
 [<ffffffffa01e46ba>] ? kvm_mmu_pte_write+0x229/0x911 [kvm]
 [<ffffffffa01c6ba9>] ? gfn_to_memslot+0x39/0xa0 [kvm]
 [<ffffffffa01c6c26>] ? mark_page_dirty+0x16/0x2e [kvm]
 [<ffffffffa01c6d6f>] ? kvm_write_guest_page+0x67/0x7f [kvm]
 [<ffffffff81066fbd>] ? local_clock+0x2a/0x3b
 [<ffffffffa01d52ce>] emulator_write_phys+0x46/0x54 [kvm]
 ......
Code:  Bad RIP value.
RIP  [<ffffffffa0172056>] 0xffffffffa0172056
 RSP <ffff880134f69a70>
CR2: ffffffffa0172056

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Xiao Guangrong 2010-09-27 18:07:07 +08:00 committed by Avi Kivity
parent 98224bf1d1
commit c42fffe3a3
1 changed files with 12 additions and 9 deletions
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21
arch/x86/kvm/mmu.c
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@ -3355,15 +3355,6 @@ int kvm_mmu_setup(struct kvm_vcpu *vcpu)
return init_kvm_mmu(vcpu); return init_kvm_mmu(vcpu);
} }
void kvm_mmu_destroy(struct kvm_vcpu *vcpu)
{
ASSERT(vcpu);
destroy_kvm_mmu(vcpu);
free_mmu_pages(vcpu);
mmu_free_memory_caches(vcpu);
}
void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot) void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot)
{ {
struct kvm_mmu_page *sp; struct kvm_mmu_page *sp;
@ -3662,4 +3653,16 @@ EXPORT_SYMBOL_GPL(kvm_mmu_get_spte_hierarchy);
#ifdef CONFIG_KVM_MMU_AUDIT #ifdef CONFIG_KVM_MMU_AUDIT
#include "mmu_audit.c" #include "mmu_audit.c"
#else
static void mmu_audit_disable(void) { }
#endif #endif
void kvm_mmu_destroy(struct kvm_vcpu *vcpu)
{
ASSERT(vcpu);
destroy_kvm_mmu(vcpu);
free_mmu_pages(vcpu);
mmu_free_memory_caches(vcpu);
mmu_audit_disable();
}