Author: kib
Date: Tue Oct 21 18:52:38 2008
New Revision: 184136
URL: http://svn.freebsd.org/changeset/base/184136
Log:
Do not overflow crashdumpmap.
Reported and tested by: pho
Reviewed by: jhb
MFC after: 1 week
Modified:
head/sys/geom/geom_disk.c
Modified: head/sys/geom/geom_disk.c
==============================================================================
--- head/sys/geom/geom_disk.c Tue Oct 21 18:51:55 2008 (r184135)
+++ head/sys/geom/geom_disk.c Tue Oct 21 18:52:38 2008 (r184136)
@@ -179,7 +179,7 @@ g_disk_kerneldump(struct bio *bp, struct
di.dumper = dp->d_dump;
di.priv = dp;
di.blocksize = dp->d_sectorsize;
- di.maxiosize = dp->d_maxsize;
+ di.maxiosize = min(dp->d_maxsize, MAXDUMPPGS * PAGE_SIZE);
di.mediaoffset = gkd->offset;
if ((gkd->offset + gkd->length) > dp->d_mediasize)
gkd->length = dp->d_mediasize - gkd->offset;
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