linux-kernel - Re: [syzbot] [exfat?] general protection fault in exfat_utf16_to

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Message-ID: <68d585b5.050a0220.25d7ab.0056.GAE@google.com>
Date: Thu, 25 Sep 2025 11:11:01 -0700
From: syzbot <syzbot+3e9cb93e3c5f90d28e19@...kaller.appspotmail.com>
To: Yuezhang.Mo@...y.com, ekffu200098@...il.com, linkinjeon@...nel.org, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	pedrodemargomes@...il.com, sj1557.seo@...sung.com, 
	syzkaller-bugs@...glegroups.com, yuezhang.mo@...y.com
Subject: Re: [syzbot] [exfat?] general protection fault in exfat_utf16_to_nls

syzbot has bisected this issue to:

commit acab02ffcd6b1e796570ffa9658c90c8f09caae3
Author: Yuezhang Mo <Yuezhang.Mo@...y.com>
Date:   Thu Sep 11 08:54:31 2025 +0000

    exfat: support modifying mount options via remount

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1617ace2580000
start commit:   b5a4da2c459f Add linux-next specific files for 20250924
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1517ace2580000
console output: https://syzkaller.appspot.com/x/log.txt?x=1117ace2580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=fc64d939cce41d2
dashboard link: https://syzkaller.appspot.com/bug?extid=3e9cb93e3c5f90d28e19
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16e7d4e2580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14596142580000

Reported-by: syzbot+3e9cb93e3c5f90d28e19@...kaller.appspotmail.com
Fixes: acab02ffcd6b ("exfat: support modifying mount options via remount")

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