[PATCH 1/2] fuse: ensure submount_lookup is initialized on alloc

[Krister Johansen]

When introduced, the submount lookup reference tracking neglected to set
an initial value in the fuse inode as part of fuse_inode_alloc.  Users
running with SLUB_DEBUG enabled caught and reported this error.  Fix by
ensuring that this value is always initialized to NULL.

Signed-off-by: Krister Johansen <k...@templeofstupid.com>
Cc: sta...@vger.kernel.org
Fixes: 513dfacefd71 ("fuse: share lookup state between submount and its parent")
---
 fs/fuse/inode.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 243bda3cfdf6..d7ebc322e55b 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -103,6 +103,7 @@ static struct inode *fuse_alloc_inode(struct super_block 
*sb)
        fi->state = 0;
        mutex_init(&fi->mutex);
        spin_lock_init(&fi->lock);
+       fi->submount_lookup = NULL;
        fi->forget = fuse_alloc_forget();
        if (!fi->forget)
                goto out_free;
-- 
2.25.1