Date: Thu, 22 Apr 2010 13:58:24 +0400 From: pluknet <pluknet@gmail.com> To: Jack Vogel <jfvogel@gmail.com> Cc: Brandon Gooch <jamesbrandongooch@gmail.com>, Harald Schmalzbauer <h.schmalzbauer@omnilan.de>, freebsd-stable@freebsd.org, John Baldwin <jhb@freebsd.org>, Jeremy Chadwick <freebsd@jdc.parodius.com> Subject: Re: em JumboFrame improovement and PCIe addon-card regression [Was: Re: em regression, UDP LOR followed by ssh stall] Message-ID: <i2qa31046fc1004220258uce38b3cbza900d0c41a839374@mail.gmail.com> In-Reply-To: <t2t2a41acea1004161353q7359f877jde1445e07dc59396@mail.gmail.com> References: <4BC82B80.3070108@omnilan.de> <20100416092803.GA17526@icarus.home.lan> <4BC82FF7.1030700@omnilan.de> <201004160822.09359.jhb@freebsd.org> <p2i2a41acea1004160829i53efa312k3ebec61cc2d9d251@mail.gmail.com> <u2s179b97fb1004160832u69175c8bi1c5a069cf872ef5b@mail.gmail.com> <4BC8A76A.6000107@omnilan.de> <s2q2a41acea1004161302k9e1261adx45efb4c9b0eebabd@mail.gmail.com> <4BC8CB9E.8060802@omnilan.de> <t2t2a41acea1004161353q7359f877jde1445e07dc59396@mail.gmail.com>
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On 17 April 2010 00:53, Jack Vogel <jfvogel@gmail.com> wrote: > Why are you using ZERO_COPY_SOCKETS? =A0And is this LOR happening on STAB= LE or > CURRENT? > I got exactly this and another similar LORs with GENERIC on head. The second: login: lock order reversal: 1st 0xffffff0002539a18 em0:rx(0) (em0:rx(0)) @ /home/svn/freebsd/head/sys/dev/e1000/if_em.c:1452 2nd 0xffffffff80e3a280 in_multi_mtx (in_multi_mtx) @ /home/svn/freebsd/head/sys/netinet/igmp.c:823 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a _witness_debugger() at _witness_debugger+0x2e witness_checkorder() at witness_checkorder+0x81e _mtx_lock_flags() at _mtx_lock_flags+0x78 igmp_input() at igmp_input+0x4ce ip_input() at ip_input+0xbc netisr_dispatch_src() at netisr_dispatch_src+0xb8 ether_demux() at ether_demux+0x17d ether_input() at ether_input+0x175 em_rxeof() at em_rxeof+0x165 em_handle_que() at em_handle_que+0x68 taskqueue_run() at taskqueue_run+0x91 taskqueue_thread_loop() at taskqueue_thread_loop+0x3f fork_exit() at fork_exit+0x12a fork_trampoline() at fork_trampoline+0xe --- trap 0, rip =3D 0, rsp =3D 0xffffff80000bed30, rbp =3D 0 --- --=20 wbr, pluknet
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