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

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Message-ID: <000000000000fc6bc5061d6e1ee3@google.com>
Date: Wed, 17 Jul 2024 02:31:03 -0700
From: syzbot <syzbot+36bb70085ef6edc2ebb9@...kaller.appspotmail.com>
To: almaz.alexandrovich@...agon-software.com, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [ntfs3?] possible deadlock in attr_data_get_block

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed

2024/07/17 09:30:00 parsed 1 programs
2024/07/17 09:30:00 [FATAL] failed to run ["./syz-executor" "setup" "fault" "binfmt_misc" "usb" "802154" "swap"]: exit status 67
mkdir(/syzcgroup) failed: 17
mount(binfmt_misc) failed: 16
write(/proc/sys/fs/binfmt_misc/register) failed: 17
SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed
 (errno 17: File exists)


Tested on:

commit:         d57431c6 fs/ntfs3: Do copy_to_user out of run_lock
git tree:       https://github.com/Paragon-Software-Group/linux-ntfs3.git
console output: https://syzkaller.appspot.com/x/log.txt?x=168672e9980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=47d282ddffae809f
dashboard link: https://syzkaller.appspot.com/bug?extid=36bb70085ef6edc2ebb9
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.