From: Peng Hao <flyingpeng@xxxxxxxxxxx> Synchronization operations on the writer side of SRCU should be invoked within the mutex. Signed-off-by: Peng Hao <flyingpeng@xxxxxxxxxxx> --- arch/x86/kvm/pmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c index 8a7dbe2c469a..619151849980 100644 --- a/arch/x86/kvm/pmu.c +++ b/arch/x86/kvm/pmu.c @@ -602,9 +602,9 @@ int kvm_vm_ioctl_set_pmu_event_filter(struct kvm *kvm, void __user *argp) mutex_lock(&kvm->lock); filter = rcu_replace_pointer(kvm->arch.pmu_event_filter, filter, 1); + synchronize_srcu_expedited(&kvm->srcu); mutex_unlock(&kvm->lock); - synchronize_srcu_expedited(&kvm->srcu); r = 0; cleanup: kfree(filter); -- 2.27.0