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-rw-r--r--fs/jfs/jfs_dmap.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c
index d4d094168a2f..a14a0f18a4c4 100644
--- a/fs/jfs/jfs_dmap.c
+++ b/fs/jfs/jfs_dmap.c
@@ -1959,6 +1959,9 @@ dbAllocDmapLev(struct bmap * bmp,
if (dbFindLeaf((dmtree_t *) & dp->tree, l2nb, &leafidx))
return -ENOSPC;
+ if (leafidx < 0)
+ return -EIO;
+
/* determine the block number within the file system corresponding
* to the leaf at which free space was found.
*/