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-rw-r--r--sys/vm/vm_map.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c
index 1cc125b..62785f1 100644
--- a/sys/vm/vm_map.c
+++ b/sys/vm/vm_map.c
@@ -1407,7 +1407,8 @@ vm_map_fixed(vm_map_t map, vm_object_t object, vm_ooffset_t offset,
("vm_map_fixed: non-NULL backing object for stack"));
vm_map_lock(map);
VM_MAP_RANGE_CHECK(map, start, end);
- (void) vm_map_delete(map, start, end);
+ if ((cow & MAP_CHECK_EXCL) == 0)
+ vm_map_delete(map, start, end);
if ((cow & (MAP_STACK_GROWS_DOWN | MAP_STACK_GROWS_UP)) != 0) {
result = vm_map_stack_locked(map, start, length, sgrowsiz,
prot, max, cow);
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