linux-kernel - Re: [syzbot] [bcachefs?] UBSAN: shift-out-of-bounds in read_one

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Message-ID: <000000000000f370b30617db817b@google.com>
Date: Tue, 07 May 2024 04:30:05 -0700
From: syzbot <syzbot+a8b0fb419355c91dda7f@...kaller.appspotmail.com>
To: bfoster@...hat.com, kent.overstreet@...ux.dev, 
	linux-bcachefs@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [bcachefs?] UBSAN: shift-out-of-bounds in read_one_super

syzbot has bisected this issue to:

commit 03ef80b469d5d83530ce1ce15be78a40e5300f9b
Author: Kent Overstreet <kent.overstreet@...ux.dev>
Date:   Sat Sep 23 22:41:51 2023 +0000

    bcachefs: Ignore unknown mount options

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=149d2fff180000
start commit:   dd5a440a31fa Linux 6.9-rc7
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=169d2fff180000
console output: https://syzkaller.appspot.com/x/log.txt?x=129d2fff180000
kernel config:  https://syzkaller.appspot.com/x/.config?x=9d7ea7de0cb32587
dashboard link: https://syzkaller.appspot.com/bug?extid=a8b0fb419355c91dda7f
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=135bf574980000

Reported-by: syzbot+a8b0fb419355c91dda7f@...kaller.appspotmail.com
Fixes: 03ef80b469d5 ("bcachefs: Ignore unknown mount options")

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