Re: [syzbot] [kernfs?] [bcachefs?] UBSAN: shift-out-of-bounds in radix_tree_delete_item

syzbot has bisected this issue to:

commit 14152654805256d760315ec24e414363bfa19a06
Author: Kent Overstreet [off-list ref]
Date:   Mon Nov 25 05:21:27 2024 +0000

    bcachefs: Bad btree roots are now autofix

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=152659a4580000
start commit:   09fbf3d50205 Merge tag 'tomoyo-pr-20250211' of git://git.c..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=172659a4580000
console output: https://syzkaller.appspot.com/x/log.txt?x=132659a4580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c516b1c112a81e77
dashboard link: https://syzkaller.appspot.com/bug?extid=b581c7106aa616bb522c
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11e449b0580000

Reported-by: syzbot+b581c7106aa616bb522c@syzkaller.appspotmail.com
Fixes: 141526548052 ("bcachefs: Bad btree roots are now autofix")

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