Author: kib
Date: Tue Mar 27 13:09:35 2018
New Revision: 331614
URL: https://svnweb.freebsd.org/changeset/base/331614
Log:
MFC r331247:
Check for wrap-around in vm_phys_alloc_seg_contig().
Modified:
stable/11/sys/vm/vm_phys.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/vm/vm_phys.c
==============================================================================
--- stable/11/sys/vm/vm_phys.c Tue Mar 27 11:49:15 2018 (r331613)
+++ stable/11/sys/vm/vm_phys.c Tue Mar 27 13:09:35 2018 (r331614)
@@ -1396,6 +1396,8 @@ vm_phys_alloc_seg_contig(struct vm_phys_seg *seg, u_lo
*/
pa = VM_PAGE_TO_PHYS(m_ret);
pa_end = pa + size;
+ if (pa_end < pa)
+ continue;
for (;;) {
pa += 1 << (PAGE_SHIFT +
VM_NFREEORDER - 1);
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