Date: Thu, 8 Jun 2006 00:03:02 +0200 From: Max Laier <max@love2party.net> To: freebsd-stable@freebsd.org Cc: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>, =?iso-8859-1?q?V=E1clav_Haisman?= <V.Haisman@sh.cvut.cz>, Robert Watson <rwatson@freebsd.org> Subject: Re: Yet another LOR Message-ID: <200606080003.09001.max@love2party.net> In-Reply-To: <20060607184441.C53690@fledge.watson.org> References: <44868B46.8000608@sh.cvut.cz> <20060607092312.R79180@maildrop.int.zabbadoz.net> <20060607184441.C53690@fledge.watson.org>
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[-- Attachment #1 --] On Wednesday 07 June 2006 19:46, Robert Watson wrote: > On Wed, 7 Jun 2006, Bjoern A. Zeeb wrote: > > On Wed, 7 Jun 2006, Václav Haisman wrote: > >> I've yet another LOR to report. > >> > >> lock order reversal: (sleepable after non-sleepable) > >> 1st 0xc45651f8 inp (tcpinp) @ sys/netinet/tcp_usrreq.c:1029 > >> 2nd 0xc3a2f9a4 user map (user map) @ sys/vm/vm_map.c:2997 > > > > added with LOR ID 190: http://sources.zabbadoz.net/freebsd/lor.html#190 > > The calltrap() handler suggests this is either a page fault handled holding > a lock, or a panic, rather than a lock order reversal. Vaclav -- was this > a crash, or just some console output that happened while the system was up > and it kept on running? Judgeing from the original message, this is a copyin with a non-sleepable mutex held: Jun 6 21:14:08 logout kernel: calltrap() at calltrap+0x5 Jun 6 21:14:08 logout kernel: --- trap 0xc, eip = 0xc07cfe72, esp = 0xd8b51ae8, ebp = 0xd8b51b08 --- Jun 6 21:14:08 logout kernel: generic_copyin(d8b51c84,d8b51b28,4,4,c4565168) at generic_copyin+0x32 Jun 6 21:14:08 logout kernel: tcp_ctloutput(c3b1ab20,d8b51c84,0,c36b9700,d8b51c68) at tcp_ctloutput+0x184 -- /"\ Best regards, | mlaier@freebsd.org \ / Max Laier | ICQ #67774661 X http://pf4freebsd.love2party.net/ | mlaier@EFnet / \ ASCII Ribbon Campaign | Against HTML Mail and News [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (FreeBSD) iD8DBQBEh00cXyyEoT62BG0RAvp8AJ9MUuj1H+VdtL/tJT9F+yaJkaujlQCferYM 4bRQbPx/8V3cAnTFSO0qHHY= =ijDg -----END PGP SIGNATURE-----
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