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

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Message-ID: <0000000000007af84a05f77fa920@google.com>
Date:   Wed, 22 Mar 2023 09:29:19 -0700
From:   syzbot <syzbot+b9ba793adebb63e56dba@...kaller.appspotmail.com>
To:     dave.kleikamp@...cle.com, jfs-discussion@...ts.sourceforge.net,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        liushixin2@...wei.com, shaggy@...nel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [jfs?] UBSAN: shift-out-of-bounds in dbAllocBits

syzbot suspects this issue was fixed by commit:

commit fad376fce0af58deebc5075b8539dc05bf639af3
Author: Liu Shixin via Jfs-discussion <jfs-discussion@...ts.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