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

syzbot
2023-03-22T16:29:58Z

syzbot suspects this issue was fixed by commit:

commit fad376fce0af58deebc5075b8539dc05bf639af3
Author: Liu Shixin via Jfs-discussion <jfs-discussion@lists.sourceforge.net>
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=12d90bf6c80000
start commit: a6afa4199d3d Merge tag 'mailbox-v6.1' of git://git.linaro...
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=d19f5d16783f901
dashboard link: https://syzkaller.appspot.com/bug?extid=b9ba793adebb63e56dba
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1322ae34880000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10403c94880000

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