linux-kernel - Re: [syzbot] [ntfs3?] possible deadlock in filemap

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Date: Wed, 03 Jan 2024 18:02:06 -0800
From: syzbot <syzbot+7736960b837908f3a81d@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, almaz.alexandrovich@...agon-software.com, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-mm@...ck.org, nogikh@...gle.com, ntfs3@...ts.linux.dev, 
	syzkaller-bugs@...glegroups.com, willy@...radead.org
Subject: Re: [syzbot] [ntfs3?] possible deadlock in filemap_fault

syzbot has bisected this issue to:

commit ad26a9c84510af7252e582e811de970433a9758f
Author: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
Date:   Fri Oct 7 17:08:06 2022 +0000

    fs/ntfs3: Fixing wrong logic in attr_set_size and ntfs_fallocate

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=152a3829e80000
start commit:   610a9b8f49fb Linux 6.7-rc8
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=172a3829e80000
console output: https://syzkaller.appspot.com/x/log.txt?x=132a3829e80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=655f8abe9fe69b3b
dashboard link: https://syzkaller.appspot.com/bug?extid=7736960b837908f3a81d
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11013129e80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12c68929e80000

Reported-by: syzbot+7736960b837908f3a81d@...kaller.appspotmail.com
Fixes: ad26a9c84510 ("fs/ntfs3: Fixing wrong logic in attr_set_size and ntfs_fallocate")

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