Re: possible deadlock in acct_pin_kill

[syzbot]

syzbot has bisected this bug to:

commit e950564b97fd0f541b02eb207685d0746f5ecf29
Author: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Date:   Tue Jul 24 13:01:55 2018 +0000

    vfs: don't evict uninitialized inode

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12123143200000
start commit:   da5322e6 Merge tag 'selinux-pr-20181115' of git://git.kern..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=11123143200000
console output: https://syzkaller.appspot.com/x/log.txt?x=16123143200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=d86f24333880b605
dashboard link: https://syzkaller.appspot.com/bug?extid=2a73a6ea9507b7112141
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12298533400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17ff545d400000

Reported-by: syzbot+2a73a6ea9507b7112141@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: e950564b97fd ("vfs: don't evict uninitialized inode")

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