Theoretically it is possible for mem_access_emulate_each_rep to be
true even when current->arch.vm_event == NULL, so add an extra
check to hvmemul_virtual_to_linear().
Signed-off-by: Razvan Cojocaru <rcojoc...@bitdefender.com>
---
xen/arch/x86/hvm/emulate.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/arch/x86/hvm/emulate.c b/xen/arch/x86/hvm/emulate.c
index f5ab5bc..91413d2 100644
--- a/xen/arch/x86/hvm/emulate.c
+++ b/xen/arch/x86/hvm/emulate.c
@@ -514,7 +514,7 @@ static int hvmemul_virtual_to_linear(
* vm_event being triggered for repeated writes to a whole page.
*/
if ( unlikely(current->domain->arch.mem_access_emulate_each_rep) &&
- current->arch.vm_event->emulate_flags != 0 )
+ current->arch.vm_event && current->arch.vm_event->emulate_flags != 0 )
max_reps = 1;
/*
--
1.9.1
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