Author: kib
Date: Thu Jan 9 03:24:36 2014
New Revision: 260464
URL: http://svnweb.freebsd.org/changeset/base/260464
Log:
MFC r260204:
Assert that accounting for the pmap resident pages does not underflow.
Modified:
stable/10/sys/amd64/amd64/pmap.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/amd64/amd64/pmap.c
==============================================================================
--- stable/10/sys/amd64/amd64/pmap.c Thu Jan 9 01:48:33 2014
(r260463)
+++ stable/10/sys/amd64/amd64/pmap.c Thu Jan 9 03:24:36 2014
(r260464)
@@ -608,6 +608,9 @@ pmap_resident_count_dec(pmap_t pmap, int
{
PMAP_LOCK_ASSERT(pmap, MA_OWNED);
+ KASSERT(pmap->pm_stats.resident_count >= count,
+ ("pmap %p resident count underflow %ld %d", pmap,
+ pmap->pm_stats.resident_count, count));
pmap->pm_stats.resident_count -= count;
}
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