diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c
index 00258a551334..d83ac5f5888a 100644
--- a/fs/jfs/jfs_dmap.c
+++ b/fs/jfs/jfs_dmap.c
@@ -1886,6 +1886,9 @@ dbAllocCtl(struct bmap * bmp, s64 nblocks, int l2nb, s64 blkno, s64 * results)
 			return -EIO;
 		dp = (struct dmap *) mp->data;
 
+		if (dp->tree.budmin < 0)
+			return -EIO;
+
 		/* try to allocate the blocks.
 		 */
 		rc = dbAllocDmapLev(bmp, dp, (int) nblocks, l2nb, results);