linux-kernel - Re: [syzbot] [fs?] UBSAN: shift-out-of-bounds in befs_check

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Date: Sun, 03 Mar 2024 00:30:05 -0800
From: syzbot <syzbot+fc26c366038b54261e53@...kaller.appspotmail.com>
To: 20230801155823.206985-1-ghandatmanas@...il.com, 
	88c258bd-3d0c-de79-b411-6552841eb8d0@...il.com, axboe@...nel.dk, 
	brauner@...nel.org, ghandatmanas@...il.com, gregkh@...uxfoundation.org, 
	jack@...e.cz, linux-fsdevel@...r.kernel.org, 
	linux-kernel-mentees@...ts.linuxfoundation.org, linux-kernel@...r.kernel.org, 
	luisbg@...nel.org, salah.triki@...il.com, syzkaller-bugs@...glegroups.com, 
	syzkaller@...glegroups.com, w@....eu
Subject: Re: [syzbot] [fs?] UBSAN: shift-out-of-bounds in befs_check_sb

syzbot suspects this issue was fixed by commit:

commit 6f861765464f43a71462d52026fbddfc858239a5
Author: Jan Kara <jack@...e.cz>
Date:   Wed Nov 1 17:43:10 2023 +0000

    fs: Block writes to mounted block devices

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14b5e754180000
start commit:   8689f4f2ea56 Merge tag 'mmc-v6.5-2' of git://git.kernel.or..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=15873d91ff37a949
dashboard link: https://syzkaller.appspot.com/bug?extid=fc26c366038b54261e53
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14237dc2a80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13e34d22a80000

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

#syz fix: fs: Block writes to mounted block devices

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