netdev - Re: INFO: task hung in rtnetlink_rcv

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Date:   Fri, 22 Feb 2019 12:01:29 -0800
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Joe Perches <joe@...ches.com>
Cc:     syzbot <syzbot+8218a8a0ff60c19b8eae@...kaller.appspotmail.com>,
        ast@...nel.org, christian@...uner.io, daniel@...earbox.net,
        davem@...emloft.net, dsahern@...il.com, hawk@...nel.org,
        idosch@...lanox.com, john.fastabend@...il.com, kafai@...com,
        ktkhai@...tuozzo.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, petrm@...lanox.com,
        roopa@...ulusnetworks.com, songliubraving@...com,
        syzkaller-bugs@...glegroups.com, xdp-newbies@...r.kernel.org,
        yhs@...com
Subject: Re: INFO: task hung in rtnetlink_rcv_msg

Hi!

Seems like something funny is going on with get_maintainer.pl since XDP
entry got added.  We seem to have been CCed on:

net: ns83820: code cleanup for ns83820_probe_phy()
veth: Fix -Wformat-truncation
INFO: task hung in rtnetlink_rcv_msg

I tried Florian's veth patch myself and it does indeed produce:

"David S. Miller" <davem@...emloft.net> (odd fixer:NETWORKING DRIVERS,commit_signer:9/15=60%)
Alexei Starovoitov <ast@...nel.org> (supporter:XDP (eXpress Data Path))
Daniel Borkmann <daniel@...earbox.net> (supporter:XDP (eXpress Data Path),commit_signer:6/15=40%)
Jakub Kicinski <jakub.kicinski@...ronome.com> (supporter:XDP (eXpress Data Path))
Jesper Dangaard Brouer <hawk@...nel.org> (supporter:XDP (eXpress Data Path))
John Fastabend <john.fastabend@...il.com> (supporter:XDP (eXpress Data Path),commit_signer:2/15=13%)
Toshiaki Makita <makita.toshiaki@....ntt.co.jp> (commit_signer:11/15=73%,authored:11/15=73%,added_lines:1027/1055=97%,removed_lines:180/195=92%)
David Ahern <dsahern@...il.com> (commit_signer:2/15=13%,authored:1/15=7%)
Li RongQing <lirongqing@...du.com> (authored:1/15=7%,removed_lines:14/195=7%)
Michael Walle <michael@...le.cc> (authored:1/15=7%)
"Gustavo A. R. Silva" <gustavo@...eddedor.com> (authored:1/15=7%)
netdev@...r.kernel.org (open list:NETWORKING DRIVERS)
linux-kernel@...r.kernel.org (open list)
xdp-newbies@...r.kernel.org (open list:XDP (eXpress Data Path))

Even though it only touches:

 drivers/net/veth.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

And XDP entry is:

XDP (eXpress Data Path)
M:	Alexei Starovoitov <ast@...nel.org>
M:	Daniel Borkmann <daniel@...earbox.net>
M:	David S. Miller <davem@...emloft.net>
M:	Jakub Kicinski <jakub.kicinski@...ronome.com>
M:	Jesper Dangaard Brouer <hawk@...nel.org>
M:	John Fastabend <john.fastabend@...il.com>
L:	netdev@...r.kernel.org
L:	xdp-newbies@...r.kernel.org
S:	Supported
F:	net/core/xdp.c
F:	include/net/xdp.h
F:	kernel/bpf/devmap.c
F:	kernel/bpf/cpumap.c
F:	include/trace/events/xdp.h
K:	xdp
N:	xdp

So no relation to drivers at all...