linux-kernel - Re: [syzbot] [xfs?] possible deadlock in xfs_buf_find

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] [day] [month] [year] [list]

Message-ID: <67d456f8.050a0220.14e108.0047.GAE@google.com>
Date: Fri, 14 Mar 2025 09:19:04 -0700
From: syzbot <syzbot+acb56162aef712929d3f@...kaller.appspotmail.com>
To: cem@...nel.org, chandan.babu@...cle.com, cmaiolino@...hat.com, 
	dchinner@...hat.com, djwong@...nel.org, hch@....de, 
	linux-kernel@...r.kernel.org, linux-xfs@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [xfs?] possible deadlock in xfs_buf_find_insert

syzbot suspects this issue was fixed by commit:

commit a9ab28b3d21aec6d0f56fe722953e20ce470237b
Author: Christoph Hellwig <hch@....de>
Date:   Tue Jan 28 05:22:58 2025 +0000

    xfs: remove xfs_buf_cache.bc_lock

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17fb5c78580000
start commit:   69b8923f5003 Merge tag 'for-linus-6.14-ofs4' of git://git...
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=57ab43c279fa614d
dashboard link: https://syzkaller.appspot.com/bug?extid=acb56162aef712929d3f
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=174cd5f8580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=162e2d18580000

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

#syz fix: xfs: remove xfs_buf_cache.bc_lock

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