linux-ext4 - Re: [syzbot] [ext4?] possible deadlock in ext4_xattr_inode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <6726ae7b.050a0220.35b515.018a.GAE@google.com>
Date: Sat, 02 Nov 2024 15:58:03 -0700
From: syzbot <syzbot+ee72b9a7aad1e5a77c5c@...kaller.appspotmail.com>
To: adilger.kernel@...ger.ca, adilger@...ger.ca, eadavis@...com, 
	hdanton@...a.com, linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com, tytso@....edu, 
	wojciech.gladysz@...ogain.com
Subject: Re: [syzbot] [ext4?] possible deadlock in ext4_xattr_inode_iget (3)

syzbot suspects this issue was fixed by commit:

commit d1bc560e9a9c78d0b2314692847fc8661e0aeb99
Author: Wojciech Gładysz <wojciech.gladysz@...ogain.com>
Date:   Thu Aug 1 14:38:27 2024 +0000

    ext4: nested locking for xattr inode

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1245f55f980000
start commit:   fe46a7dd189e Merge tag 'sound-6.9-rc1' of git://git.kernel..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=1a07d5da4eb21586
dashboard link: https://syzkaller.appspot.com/bug?extid=ee72b9a7aad1e5a77c5c
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12407f45180000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=140d9db1180000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: ext4: nested locking for xattr inode

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