Author: kib
Date: Fri Jul 12 18:52:33 2013
New Revision: 253280
URL: http://svnweb.freebsd.org/changeset/base/253280
Log:
Only copy as much bytes as there in superblock, instead of the full
block copy, when copying the superblock into the snapshot. UFS1 does
not align superblock on the block boundary, and bcopy runs off the end
of the buffer.
Reported by: Andre Albsmeier <andre.albsme...@siemens.com>
Reviewed by: mckusick
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Modified:
head/sys/ufs/ffs/ffs_snapshot.c
Modified: head/sys/ufs/ffs/ffs_snapshot.c
==============================================================================
--- head/sys/ufs/ffs/ffs_snapshot.c Fri Jul 12 18:13:41 2013
(r253279)
+++ head/sys/ufs/ffs/ffs_snapshot.c Fri Jul 12 18:52:33 2013
(r253280)
@@ -792,7 +792,7 @@ out1:
brelse(nbp);
} else {
loc = blkoff(fs, fs->fs_sblockloc);
- bcopy((char *)copy_fs, &nbp->b_data[loc], fs->fs_bsize);
+ bcopy((char *)copy_fs, &nbp->b_data[loc], (u_int)fs->fs_sbsize);
bawrite(nbp);
}
/*
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