Author: markj
Date: Mon Dec 9 00:34:34 2019
New Revision: 355541
URL: https://svnweb.freebsd.org/changeset/base/355541
Log:
MFC r355469:
Fix fault_type handling in vm_map_lookup().
Modified:
stable/12/sys/vm/vm_map.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/sys/vm/vm_map.c
==============================================================================
--- stable/12/sys/vm/vm_map.c Mon Dec 9 00:30:05 2019 (r355540)
+++ stable/12/sys/vm/vm_map.c Mon Dec 9 00:34:34 2019 (r355541)
@@ -4525,7 +4525,7 @@ vm_map_lookup(vm_map_t *var_map, /* IN/OUT */
vm_map_entry_t entry;
vm_map_t map = *var_map;
vm_prot_t prot;
- vm_prot_t fault_type = fault_typea;
+ vm_prot_t fault_type;
vm_object_t eobject;
vm_size_t size;
struct ucred *cred;
@@ -4569,7 +4569,7 @@ RetryLookupLocked:
vm_map_growstack(map, vaddr, entry) == KERN_SUCCESS)
goto RetryLookupLocked;
}
- fault_type &= VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE;
+ fault_type = fault_typea & VM_PROT_ALL;
if ((fault_type & prot) != fault_type || prot == VM_PROT_NONE) {
vm_map_unlock_read(map);
return (KERN_PROTECTION_FAILURE);
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