linux-kernel - Re: [syzbot] [nfs?] [netfs?] INFO: task hung in anon_pipe

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Message-ID: <690ae513.050a0220.baf87.0009.GAE@google.com>
Date: Tue, 04 Nov 2025 21:48:03 -0800
From: syzbot <syzbot+ef2c1c404cbcbcc66453@...kaller.appspotmail.com>
To: asmadeus@...ewreck.org, brauner@...nel.org, ceph-devel@...r.kernel.org, 
	dhowells@...hat.com, ericvh@...nel.org, idryomov@...il.com, jack@...e.cz, 
	jlayton@...nel.org, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-nfs@...r.kernel.org, 
	linux-trace-kernel@...r.kernel.org, linux_oss@...debyte.com, lucho@...kov.net, 
	m@...wtm.org, mathieu.desnoyers@...icios.com, mhiramat@...nel.org, 
	netfs@...ts.linux.dev, rostedt@...dmis.org, syzkaller-bugs@...glegroups.com, 
	v9fs@...ts.linux.dev, viro@...iv.linux.org.uk, xiubli@...hat.com
Subject: Re: [syzbot] [nfs?] [netfs?] INFO: task hung in anon_pipe_write

syzbot suspects this issue was fixed by commit:

commit 290434474c332a2ba9c8499fe699c7f2e1153280
Author: Tingmao Wang <m@...wtm.org>
Date:   Sun Apr 6 16:18:42 2025 +0000

    fs/9p: Refresh metadata in d_revalidate for uncached mode too

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10be532f980000
start commit:   5bc1018675ec Merge tag 'pci-v6.15-fixes-3' of git://git.ke..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=9f5bd2a76d9d0b4e
dashboard link: https://syzkaller.appspot.com/bug?extid=ef2c1c404cbcbcc66453
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15631270580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12a0b0d4580000

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

#syz fix: fs/9p: Refresh metadata in d_revalidate for uncached mode too

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