[PATCH 4.9 023/101] fuse: fix control dir setup and teardown

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Miklos Szeredi commit 6becdb601bae2a043d7fb9762c4d48699528ea6e upstream. syzbot is reporting NULL pointer dereference at fuse_ctl_remove_conn() [1]. Since fc->ctl_ndents is incremented by

[PATCH 4.9 023/101] fuse: fix control dir setup and teardown

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Miklos Szeredi commit 6becdb601bae2a043d7fb9762c4d48699528ea6e upstream. syzbot is reporting NULL pointer dereference at fuse_ctl_remove_conn() [1]. Since fc->ctl_ndents is incremented by