Re: [syzbot] [jfs?] UBSAN: shift-out-of-bounds in dbFindCtl

From: syzbot
Date: Thu Mar 30 2023 - 15:45:58 EST


syzbot suspects this issue was fixed by commit:

commit fad376fce0af58deebc5075b8539dc05bf639af3
Author: Liu Shixin via Jfs-discussion <jfs-discussion@xxxxxxxxxxxxxxxxxxxxx>
Date: Thu Nov 3 03:01:59 2022 +0000

fs/jfs: fix shift exponent db_agl2size negative

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=146d74a5c80000
start commit: b229b6ca5abb Merge tag 'perf-tools-fixes-for-v6.1-2022-10-..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=a66c6c673fb555e8
dashboard link: https://syzkaller.appspot.com/bug?extid=7edb85bc97be9f350d90
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16d5817a880000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15d68cde880000

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

#syz fix: fs/jfs: fix shift exponent db_agl2size negative

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