Re: [syzbot] [reiserfs?] KASAN: null-ptr-deref Read in do_journal_end (2)

[syzbot]

syzbot suspects this issue was fixed by commit:

commit 6f861765464f43a71462d52026fbddfc858239a5
Author: Jan Kara <jack@xxxxxxx>
Date:   Wed Nov 1 17:43:10 2023 +0000

    fs: Block writes to mounted block devices

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10f6c4b4180000
start commit:   69b41ac87e4a Merge tag 'for-6.2-rc2-tag' of git://git.kern..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=9babfdc3dd4772d0
dashboard link: https://syzkaller.appspot.com/bug?extid=845cd8e5c47f2a125683
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14f68684480000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=142a1eaa480000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: fs: Block writes to mounted block devices

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