[PATCH 6/9] Unionfs: debugging updates

[Erez Zadok]

Don't perform dentry+inode checks unless both are valid.

Signed-off-by: Erez Zadok <ezk@xxxxxxxxxxxxx>
---
 fs/unionfs/debug.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/unionfs/debug.c b/fs/unionfs/debug.c
index 0066ccd..8464fbb 100644
--- a/fs/unionfs/debug.c
+++ b/fs/unionfs/debug.c
@@ -299,7 +299,7 @@ check_inode:
 	 * be NULL.  But, check that all three are NULL: lower dentry, mnt,
 	 * and inode.
 	 */
-	if (S_ISDIR(inode->i_mode))
+	if (dstart >= 0 && dend >= 0 && S_ISDIR(inode->i_mode))
 		for (bindex = dstart+1; bindex < dend; bindex++) {
 			lower_inode = unionfs_lower_inode_idx(inode, bindex);
 			lower_dentry = unionfs_lower_dentry_idx(dentry,
-- 
1.5.2.2

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