Hello,

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

Reported-by: syzbot+8965fea6a159ab9aa32d@syzkaller.appspotmail.com
Tested-by: syzbot+8965fea6a159ab9aa32d@syzkaller.appspotmail.com

Tested on:

commit:         2aece382 netfs: Report on NULL folioq in netfs_writeba..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git netfs-writeback
console output: https://syzkaller.appspot.com/x/log.txt?x=159cf3c0580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=225053d900535838
dashboard link: https://syzkaller.appspot.com/bug?extid=8965fea6a159ab9aa32d
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=1328f3c0580000

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