linux-kernel - Re: [syzbot] [exfat?] WARNING in __rt_mutex_slowlock

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Message-ID: <690db7a7.a70a0220.22f260.002e.GAE@google.com>
Date: Fri, 07 Nov 2025 01:11:03 -0800
From: syzbot <syzbot+5216036fc59c43d1ee02@...kaller.appspotmail.com>
To: Yuezhang.Mo@...y.com, brauner@...nel.org, jack@...e.cz, 
	linkinjeon@...nel.org, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, sj1557.seo@...sung.com, 
	syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk, 
	yuezhang.mo@...y.com
Subject: Re: [syzbot] [exfat?] WARNING in __rt_mutex_slowlock_locked (2)

syzbot has bisected this issue to:

commit 184fa506e392eb78364d9283c961217ff2c0617b
Author: Yuezhang Mo <Yuezhang.Mo@...y.com>
Date:   Mon Oct 28 03:23:36 2024 +0000

    exfat: fix out-of-bounds access of directory entries

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12217812580000
start commit:   c2c2ccfd4ba7 Merge tag 'net-6.18-rc5' of git://git.kernel...
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=11217812580000
console output: https://syzkaller.appspot.com/x/log.txt?x=16217812580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=41ad820f608cb833
dashboard link: https://syzkaller.appspot.com/bug?extid=5216036fc59c43d1ee02
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11062a58580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16e19084580000

Reported-by: syzbot+5216036fc59c43d1ee02@...kaller.appspotmail.com
Fixes: 184fa506e392 ("exfat: fix out-of-bounds access of directory entries")

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