svn commit: r281769 - head/sys/geom/uncompress

[Pedro F. Giffuni]

Author: pfg
Date: Mon Apr 20 16:31:27 2015
New Revision: 281769
URL: https://svnweb.freebsd.org/changeset/base/281769

Log:
  g_uncompress_taste: prevent a double free.
  
  Found by:	Clang Static Analyzer
  MFC after:	1 week

Modified:
  head/sys/geom/uncompress/g_uncompress.c

Modified: head/sys/geom/uncompress/g_uncompress.c
==============================================================================
--- head/sys/geom/uncompress/g_uncompress.c	Mon Apr 20 16:23:59 2015	(r281768)
+++ head/sys/geom/uncompress/g_uncompress.c	Mon Apr 20 16:31:27 2015	(r281769)
@@ -571,6 +571,7 @@ g_uncompress_taste(struct g_class *mp, s
 		    (buf+sizeof(struct cloop_header)))[i]);
 	}
 	free(buf, M_GEOM);
+	buf = NULL;
 	DPRINTF(("%s: done reading offsets\n", gp->name));
 	mtx_init(&sc->last_mtx, "geom_uncompress cache", NULL, MTX_DEF);
 	sc->last_blk = -1;