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Date:      Wed, 28 Jun 2006 23:52:58 +0200
From:      Fabian Keil <freebsd-listen@fabiankeil.de>
To:        Robert Watson <rwatson@FreeBSD.org>
Cc:        Peter Thoenen <peter.thoenen@yahoo.com>, freebsd-stable@freebsd.org
Subject:   Re: FreeBSD 6.1 Tor issues (Once More, with Feeling)
Message-ID:  <20060628235258.3414b074@localhost>
In-Reply-To: <20060628101729.J50845@fledge.watson.org>
References:  <20060627175853.765a590e@localhost> <20060628101729.J50845@fledge.watson.org>

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Robert Watson <rwatson@FreeBSD.org> wrote:

> - Are there any warnings on the console from WITNESS or other
> debugging options?

I just got:

Jun 28 23:01:19 tor kernel: lock order reversal:
Jun 28 23:01:19 tor kernel: 1st 0xc3795000 kqueue (kqueue) @ /usr/src/sys/k=
ern/kern_event.c:1053
Jun 28 23:01:19 tor kernel: 2nd 0xc1043144 system map (system map) @ /usr/s=
rc/sys/vm/vm_map.c:2390
Jun 28 23:01:20 tor kernel: KDB: stack backtrace:
Jun 28 23:01:20 tor kernel: kdb_backtrace(0,ffffffff,c0711af0,c0713440,c06d=
b624) at kdb_backtrace+0x29
Jun 28 23:01:20 tor kernel: witness_checkorder(c1043144,9,c06b90a8,956) at =
witness_checkorder+0x578
Jun 28 23:01:20 tor kernel: _mtx_lock_flags(c1043144,0,c06b90a8,956) at _mt=
x_lock_flags+0x5b
Jun 28 23:01:20 tor kernel: _vm_map_lock(c10430c0,c06b90a8,956) at _vm_map_=
lock+0x26
Jun 28 23:01:20 tor kernel: vm_map_remove(c10430c0,c3bc6000,c3bc8000,d6f55b=
30,c0623361) at vm_map_remove+0x1f
Jun 28 23:01:20 tor kernel: kmem_free(c10430c0,c3bc6000,2000,d6f55b48,c0625=
24f) at kmem_free+0x25
Jun 28 23:01:20 tor kernel: page_free(c3bc6000,2000,22,2000,d6f55b60) at pa=
ge_free+0x29
Jun 28 23:01:20 tor kernel: uma_large_free(c3ba5140) at uma_large_free+0x7b
Jun 28 23:01:20 tor kernel: free(c3bc6000,c06d8980,c3bc6000,c4830000,1400) =
at free+0xc5
Jun 28 23:01:20 tor kernel: kqueue_expand(c3795000,c06d8a40,500,0) at kqueu=
e_expand+0xd7
Jun 28 23:01:20 tor kernel: kqueue_register(c3795000,d6f55bf4,c3a8f480,1,0)=
 at kqueue_register+0x1b8
Jun 28 23:01:20 tor kernel: kern_kevent(c3a8f480,3,19,200,d6f55cc8) at kern=
_kevent+0xc9
Jun 28 23:01:20 tor kernel: kevent(c3a8f480,d6f55d04,6,2,212) at kevent+0x55
Jun 28 23:01:20 tor kernel: syscall(2824003b,80e003b,bfbf003b,cb87000,80d50=
20) at syscall+0x22f
Jun 28 23:01:20 tor kernel: Xint0x80_syscall() at Xint0x80_syscall+0x1f
Jun 28 23:01:20 tor kernel: --- syscall (363, FreeBSD ELF32, kevent), eip =
=3D 0x282cc4af, esp =3D 0xbfbfe9fc, ebp =3D 0xbfbfea48 ---

Looks similar to <http://sources.zabbadoz.net/freebsd/lor.html#185>.

Fabian
--=20
http://www.fabiankeil.de/

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