d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Follow-up to r313690.

Browse Source 
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
This commit is contained in:
kib 2017-03-12 13:53:13 +00:00
parent c77fb55571
commit dada1184e8
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
sys/vm/vm_map.c
View File

@ -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, /* IN/OUT */
* 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;