Author: kib
Date: Sun Mar 12 13:53:13 2017
New Revision: 315158
URL: https://svnweb.freebsd.org/changeset/base/315158
Log:
Follow-up to r313690.
Fix two missed places where vm_object offset to index calculation
should use unsigned shift, to allow handling of full range of unsigned
offsets used to create device mappings.
Reported and tested by: royger (previous version)
Reviewed by: alc (previous version)
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Modified:
head/sys/vm/vm_map.c
Modified: head/sys/vm/vm_map.c
==============================================================================
--- head/sys/vm/vm_map.c Sun Mar 12 13:51:13 2017 (r315157)
+++ head/sys/vm/vm_map.c Sun Mar 12 13:53:13 2017 (r315158)
@@ -4122,7 +4122,7 @@ RetryLookup:;
* Return the object/offset from this entry. If the entry was
* copy-on-write or empty, it has been fixed up.
*/
- *pindex = OFF_TO_IDX((vaddr - entry->start) + entry->offset);
+ *pindex = UOFF_TO_IDX((vaddr - entry->start) + entry->offset);
*object = entry->object.vm_object;
*out_prot = prot;
@@ -4203,7 +4203,7 @@ vm_map_lookup_locked(vm_map_t *var_map,
* Return the object/offset from this entry. If the entry was
* copy-on-write or empty, it has been fixed up.
*/
- *pindex = OFF_TO_IDX((vaddr - entry->start) + entry->offset);
+ *pindex = UOFF_TO_IDX((vaddr - entry->start) + entry->offset);
*object = entry->object.vm_object;
*out_prot = prot;
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