linux-kernel - Re: [syzbot] [kernfs?] [netfs?] INFO: task hung in pipe

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: <690796fa.a70a0220.37351b.000b.GAE@google.com>
Date: Sun, 02 Nov 2025 09:38:02 -0800
From: syzbot <syzbot+5984e31a805252b3b40a@...kaller.appspotmail.com>
To: asmadeus@...ewreck.org, brauner@...nel.org, ceph-devel@...r.kernel.org, 
	dhowells@...hat.com, gregkh@...uxfoundation.org, idryomov@...il.com, 
	jack@...e.cz, jlayton@...nel.org, kprateek.nayak@....com, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-trace-kernel@...r.kernel.org, mathieu.desnoyers@...icios.com, 
	mhiramat@...nel.org, netfs@...ts.linux.dev, oleg@...hat.com, 
	rostedt@...dmis.org, syzkaller-bugs@...glegroups.com, tj@...nel.org, 
	viro@...iv.linux.org.uk, xiubli@...hat.com
Subject: Re: [syzbot] [kernfs?] [netfs?] INFO: task hung in pipe_write (6)

syzbot suspects this issue was fixed by commit:

commit e8fe3f07a357c39d429e02ca34f740692d88967a
Author: Oleg Nesterov <oleg@...hat.com>
Date:   Tue Aug 19 16:10:13 2025 +0000

    9p/trans_fd: p9_fd_request: kick rx thread if EPOLLIN

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=154ba342580000
start commit:   ad1b832bf1cf Merge tag 'devicetree-fixes-for-6.14-1' of gi..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=e55cabe422b4fcaf
dashboard link: https://syzkaller.appspot.com/bug?extid=5984e31a805252b3b40a
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=170d57df980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12df35a4580000

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

#syz fix: 9p/trans_fd: p9_fd_request: kick rx thread if EPOLLIN

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