Re: general protection fault in fanotify_handle_event

[syzbot]

syzbot has bisected this bug to:

commit 77115225acc67d9ac4b15f04dd138006b9cd1ef2
Author: Amir Goldstein <amir73il@xxxxxxxxx>
Date:   Thu Jan 10 17:04:37 2019 +0000

    fanotify: cache fsid in fsnotify_mark_connector

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1627632d200000
start commit:   3f018f4a Add linux-next specific files for 20190418
git tree:       linux-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=1527632d200000
console output: https://syzkaller.appspot.com/x/log.txt?x=1127632d200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=faa7bdc352fc157e
dashboard link: https://syzkaller.appspot.com/bug?extid=15927486a4f1bfcbaf91
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=155543d3200000

Reported-by: syzbot+15927486a4f1bfcbaf91@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 77115225acc6 ("fanotify: cache fsid in fsnotify_mark_connector")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection