Re: WARNING in fanotify_handle_event

[syzbot <syzbot+c277e8e2f46414645508@xxxxxxxxxxxxxxxxxxxxxxxxx>]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger  
crash:

Reported-and-tested-by:  
syzbot+c277e8e2f46414645508@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         a6a3fd5c fanotify: update connector fsid cache on add mark
git tree:       https://github.com/amir73il/linux.git  
fsnotify-fix-fsid-cache
kernel config:  https://syzkaller.appspot.com/x/.config?x=fa9f7e1b6a8bb586
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)

Note: testing is done by a robot and is best-effort only.