Date: Tue, 20 Jun 2023 06:25:05 +0100 From: Graham Perrin <grahamperrin@freebsd.org> To: FreeBSD CURRENT <freebsd-current@freebsd.org> Subject: =?UTF-8?Q?kernel=3a_sonewconn=3a_pcb_0xfffff8002b255a00_=28local=3a?= =?UTF-8?Q?/var/run/devd=2eseqpacket=2epipe=29=3a_Listen_queue_overflow=3a_1?= =?UTF-8?Q?_already_in_queue_awaiting_acceptance_=2860_occurrences=29=2c_?= =?UTF-8?B?4oCm?= Message-ID: <3567b4c0-8143-67c8-fde7-5ae3923f53f4@freebsd.org>
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From: Graham Perrin <grahamperrin@freebsd.org>
To: FreeBSD CURRENT <freebsd-current@freebsd.org>
Message-ID: <3567b4c0-8143-67c8-fde7-5ae3923f53f4@freebsd.org>
Subject: =?UTF-8?Q?kernel=3a_sonewconn=3a_pcb_0xfffff8002b255a00_=28local=3a?=
=?UTF-8?Q?/var/run/devd=2eseqpacket=2epipe=29=3a_Listen_queue_overflow=3a_1?=
=?UTF-8?Q?_already_in_queue_awaiting_acceptance_=2860_occurrences=29=2c_?=
=?UTF-8?B?4oCm?=
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<html data-lt-installed=3D"true">
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<meta http-equiv=3D"content-type" content=3D"text/html; charset=3DUTF=
-8">
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<body style=3D"padding-bottom: 1px;">
<p>Please, what's the meaning of the sonewconn lines?</p>
<p><br>
</p>
<p><span style=3D"font-family:monospace"><span
style=3D"color:#000000;background-color:#ffffff;">% tail -f -n =
0
/var/log/messages
</span><br>
Jun 20 04:08:41 mowa219-gjp4-8570p-freebsd su[4159]:
grahamperrin to root on /dev/pts/6
<br>
Jun 20 04:12:20 mowa219-gjp4-8570p-freebsd apps.plugin[3178]:
Cannot fetch process 4501 command line (command 'sysctl')
<br>
Jun 20 04:30:25 mowa219-gjp4-8570p-freebsd kernel: lock order
reversal:
<br>
Jun 20 04:30:25 mowa219-gjp4-8570p-freebsd kernel: =C2=A01st
0xfffffe0103db30e0 filedesc structure (filedesc structure, sx) @
/usr/src/sys/kern/kern_descrip.c:1397
<br>
Jun 20 04:30:25 mowa219-gjp4-8570p-freebsd kernel: =C2=A02nd
0xfffff80001df8930 devfs (devfs, lockmgr) @
/usr/src/sys/kern/vfs_subr.c:6244
<br>
Jun 20 04:30:25 mowa219-gjp4-8570p-freebsd kernel: lock order
filedesc structure -> devfs attempted at:
<br>
Jun 20 04:30:25 mowa219-gjp4-8570p-freebsd kernel: #0
0xffffffff80bc4573 at witness_checkorder+0xbb3
<br>
Jun 20 04:30:25 mowa219-gjp4-8570p-freebsd kernel: #1
0xffffffff80b21265 at lockmgr_xlock+0x55
<br>
Jun 20 04:30:25 mowa219-gjp4-8570p-freebsd kernel: #2
0xffffffff80c5e4b4 at _vn_lock+0x54
<br>
Jun 20 04:30:25 mowa219-gjp4-8570p-freebsd kernel: #3
0xffffffff80afd13b at knlist_remove_kq+0x8b
<br>
Jun 20 04:30:25 mowa219-gjp4-8570p-freebsd kernel: #4
0xffffffff80c517d4 at filt_vfsdetach+0x24
<br>
Jun 20 04:30:25 mowa219-gjp4-8570p-freebsd kernel: #5
0xffffffff80afdad0 at knote_fdclose+0x180
<br>
Jun 20 04:30:25 mowa219-gjp4-8570p-freebsd kernel: #6
0xffffffff80af4f2c at closefp_impl+0x9c
<br>
Jun 20 04:30:25 mowa219-gjp4-8570p-freebsd kernel: #7
0xffffffff8104d8e0 at amd64_syscall+0x140
<br>
Jun 20 04:30:25 mowa219-gjp4-8570p-freebsd kernel: #8
0xffffffff81020b3b at fast_syscall_common+0xf8
<br>
Jun 20 04:34:26 mowa219-gjp4-8570p-freebsd apps.plugin[3178]:
heartbeat clock: woke up 1346787 microseconds later than
expected (can be due to system load or the CLOCK_REALTIME set to
the future).
<br>
Jun 20 04:35:38 mowa219-gjp4-8570p-freebsd apps.plugin[3178]:
Cannot fetch process 6471 command line (command 'sysctl')
<br>
Jun 20 04:55:30 mowa219-gjp4-8570p-freebsd apps.plugin[3178]:
Cannot fetch process 7697 command line (command 'sysctl')
<br>
Jun 20 05:07:16 mowa219-gjp4-8570p-freebsd apps.plugin[3178]:
Cannot fetch process 8416 command line (command 'sysctl')
<br>
Jun 20 05:17:42 mowa219-gjp4-8570p-freebsd kernel: sonewconn:
pcb 0xfffff8002b255a00 (local:/var/run/devd.seqpacket.pipe):
Listen queue overflow: 1 already in queue awaiting acceptance (1
occurrences), euid 0, rgid<br>
0, jail 0
<br>
Jun 20 05:18:42 mowa219-gjp4-8570p-freebsd kernel: sonewconn:
pcb 0xfffff8002b255a00 (local:/var/run/devd.seqpacket.pipe):
Listen queue overflow: 1 already in queue awaiting acceptance
(60 occurrences), euid 0, rgi<br>
d 0, jail 0
<br>
Jun 20 05:18:56 mowa219-gjp4-8570p-freebsd apps.plugin[3178]:
Cannot fetch process 9359 command line (command 'git')
<br>
Jun 20 05:19:42 mowa219-gjp4-8570p-freebsd kernel: sonewconn:
pcb 0xfffff8002b255a00 (local:/var/run/devd.seqpacket.pipe):
Listen queue overflow: 1 already in queue awaiting acceptance
(60 occurrences), euid 0, rgi<br>
d 0, jail 0
<br>
Jun 20 05:20:03 mowa219-gjp4-8570p-freebsd apps.plugin[3178]:
Cannot fetch process 9602 command line (command 'cat')
<br>
Jun 20 05:20:43 mowa219-gjp4-8570p-freebsd kernel: sonewconn:
pcb 0xfffff8002b255a00 (local:/var/run/devd.seqpacket.pipe):
Listen queue overflow: 1 already in queue awaiting acceptance
(60 occurrences), euid 0, rgi<br>
d 0, jail 0
<br>
^C
<br>
% sudo sysctl kern.sched.pick_short=3D1
<br>
grahamperrin's password:
<br>
kern.sched.pick_short: 0 -> 1
<br>
% sudo sysctl kern.sched.preempt_thresh=3D224
<br>
kern.sched.preempt_thresh: 48 -> 224
<br>
% uptime
<br>
6:23a.m. =C2=A0up =C2=A02:24, 7 users, load averages: 0.78, 1.24,=
1.34
<br>
% uname -aKU
<br>
FreeBSD mowa219-gjp4-8570p-freebsd 14.0-CURRENT FreeBSD
14.0-CURRENT #7 main-n263630-ab3e6234ab6e-dirty: Sun Jun 18
14:56:48 BST 2023
=C2=A0=C2=A0=C2=A0=C2=A0<a class=3D"moz-txt-link-abbreviated" href=3D"mai=
lto:grahamperrin@mowa219-gjp4-8570p-freebsd:/usr/obj/usr/src/amd64.amd64/=
sys/GEN">grahamperrin@mowa219-gjp4-8570p-freebsd:/usr/obj/usr/src/amd64.a=
md64/sys/GEN</a><br>
ERIC amd64 1400090 1400090
<br>
% <br>
<br>
<br>
</span></p>
</body>
<lt-container></lt-container>
</html>
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