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KVM: SEV: initialize regions_list of a mirror VM

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[ Upstream commit 2b347a387811cb4aa7bcdb96e9203c5019a6fb41 ]

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: 54526d1fd5 ("KVM: x86: Support KVM VMs sharing SEV context")
Message-Id: <20211123005036.2954379-7-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Paolo Bonzini
2021-11-22 19:50:30 -05:00
committed by Greg Kroah-Hartman
parent b5a8918d08
commit c4db545992
1 changed files with 1 additions and 0 deletions
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arch/x86/kvm/svm/sev.c
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@@ -1805,6 +1805,7 @@ 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