linux-kernel - Re: [syzbot] [exfat?] kernel BUG in iov_iter

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Message-ID: <0000000000005ddc5d060f1e2730@google.com>
Date: Tue, 16 Jan 2024 22:14:04 -0800
From: syzbot <syzbot+fd404f6b03a58e8bc403@...kaller.appspotmail.com>
To: Yuezhang.Mo@...y.com, andy.wu@...y.com, linkinjeon@...nel.org, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	sj1557.seo@...sung.com, syzkaller-bugs@...glegroups.com, 
	wataru.aoyama@...y.com, yuezhang.mo@...y.com
Subject: Re: [syzbot] [exfat?] kernel BUG in iov_iter_revert

syzbot has bisected this issue to:

commit 11a347fb6cef62ce47e84b97c45f2b2497c7593b
Author: Yuezhang Mo <Yuezhang.Mo@...y.com>
Date:   Mon Mar 13 04:38:53 2023 +0000

    exfat: change to get file size from DataLength

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12bd5ba3e80000
start commit:   052d534373b7 Merge tag 'exfat-for-6.8-rc1' of git://git.ke..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=11bd5ba3e80000
console output: https://syzkaller.appspot.com/x/log.txt?x=16bd5ba3e80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=7c8840a4a09eab8
dashboard link: https://syzkaller.appspot.com/bug?extid=fd404f6b03a58e8bc403
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1558210be80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14d39debe80000

Reported-by: syzbot+fd404f6b03a58e8bc403@...kaller.appspotmail.com
Fixes: 11a347fb6cef ("exfat: change to get file size from DataLength")

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