From 647492047763c3ee8fe51ecf9a04f39040aa495b Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Tue, 19 Jan 2010 12:45:23 -0200 Subject: [PATCH] KVM: fix cleanup_srcu_struct on vm destruction cleanup_srcu_struct on VM destruction remains broken: BUG: unable to handle kernel paging request at ffffffffffffffff IP: [] srcu_read_lock+0x16/0x21 RIP: 0010:[] [] srcu_read_lock+0x16/0x21 Call Trace: [] kvm_arch_vcpu_uninit+0x1b/0x48 [kvm] [] kvm_vcpu_uninit+0x9/0x15 [kvm] [] vmx_free_vcpu+0x7f/0x8f [kvm_intel] [] kvm_arch_destroy_vm+0x78/0x111 [kvm] [] kvm_put_kvm+0xd4/0xfe [kvm] Move it to kvm_arch_destroy_vm. Signed-off-by: Marcelo Tosatti Reported-by: Jan Kiszka --- arch/ia64/kvm/kvm-ia64.c | 1 + arch/powerpc/kvm/powerpc.c | 1 + arch/s390/kvm/kvm-s390.c | 1 + arch/x86/kvm/x86.c | 1 + virt/kvm/kvm_main.c | 1 - 5 files changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c index e6ac549..0618898 100644 --- a/arch/ia64/kvm/kvm-ia64.c +++ b/arch/ia64/kvm/kvm-ia64.c @@ -1404,6 +1404,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm) kfree(kvm->arch.vioapic); kvm_release_vm_pages(kvm); kvm_free_physmem(kvm); + cleanup_srcu_struct(&kvm->srcu); free_kvm(kvm); } diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 2c29116..51aedd7 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -137,6 +137,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm) { kvmppc_free_vcpus(kvm); kvm_free_physmem(kvm); + cleanup_srcu_struct(&kvm->srcu); kfree(kvm); } diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index c8002193..4929286 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -242,6 +242,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm) kvm_free_physmem(kvm); free_page((unsigned long)(kvm->arch.sca)); debug_unregister(kvm->arch.dbf); + cleanup_srcu_struct(&kvm->srcu); kfree(kvm); } diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 9b0758b..322c2c5 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5547,6 +5547,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm) put_page(kvm->arch.apic_access_page); if (kvm->arch.ept_identity_pagetable) put_page(kvm->arch.ept_identity_pagetable); + cleanup_srcu_struct(&kvm->srcu); kfree(kvm->arch.aliases); kfree(kvm); } diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 2b7cd6c..7c5c873 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -506,7 +506,6 @@ static void kvm_destroy_vm(struct kvm *kvm) #else kvm_arch_flush_shadow(kvm); #endif - cleanup_srcu_struct(&kvm->srcu); kvm_arch_destroy_vm(kvm); hardware_disable_all(); mmdrop(mm); -- 1.8.2.3