From 2b347a387811cb4aa7bcdb96e9203c5019a6fb41 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Mon, 22 Nov 2021 19:50:30 -0500 Subject: [PATCH] KVM: SEV: initialize regions_list of a mirror VM This was broken before the introduction of KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM, but technically harmless because the region list was unused for a mirror VM. However, it is untidy and it now causes a NULL pointer access when attempting to move the encryption context of a mirror VM. Fixes: 54526d1fd593 ("KVM: x86: Support KVM VMs sharing SEV context") Message-Id: <20211123005036.2954379-7-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini --- arch/x86/kvm/svm/sev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index 8902b018fc18..8daabc3dc079 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -2007,6 +2007,7 @@ int svm_vm_copy_asid_from(struct kvm *kvm, unsigned int source_fd) mirror_sev->fd = source_sev.fd; mirror_sev->es_active = source_sev.es_active; mirror_sev->handle = source_sev.handle; + INIT_LIST_HEAD(&mirror_sev->regions_list); /* * Do not copy ap_jump_table. Since the mirror does not share the same * KVM contexts as the original, and they may have different -- 2.20.1