Re: BUG: unable to handle kernel NULL pointer dereference in generic_perform_write (2)

[syzbot]

Hello,

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

Reported-and-tested-by: syzbot+bca9799bf129256190da@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         5749fe5a ext4: avoid race conditions when remounting with ..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git
kernel config:  https://syzkaller.appspot.com/x/.config?x=175fcaead7a60c3f
dashboard link: https://syzkaller.appspot.com/bug?extid=bca9799bf129256190da
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)

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