Date: Thu, 18 Mar 2010 20:35:56 +0100 From: Max Laier <max@love2party.net> To: Giulio Ferro <auryn@zirakzigil.org> Cc: freebsd-net@freebsd.org, Greg Hennessy <Greg.Hennessy@nviz.net>, freebsd-pf@freebsd.org Subject: Re: PF + BRIDGE + PFSYNC causes system freezing Message-ID: <201003182035.56363.max@love2party.net> In-Reply-To: <4BA25741.6070007@zirakzigil.org> References: <4B8E4850.1060104@zirakzigil.org> <201003181526.00442.max@love2party.net> <4BA25741.6070007@zirakzigil.org>
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On Thursday 18 March 2010 17:39:29 Giulio Ferro wrote: > On 18.03.2010 15:26, Max Laier wrote: > > Ok, it's happened again... > and once the system freezes try to enter the debugger and get ps and > > >>>>> locks information. > >>>>> > >>>>> show allchains > > No result Okay ... so it looks like this is a live lock (not a deadlock) and it's probably caused by relooping packets. Now we "only" have to find the culprit for the loop ... can you share your setup details, again? The simpler the better. > >>>>> show alllocks > > Process 4483 (sshd) thread 0xffffff0002ded3a0 (100159) > exclusive sx so_rcv_sx (so_rcv_sx) r = 0 (0xffffff0002c79b98) locked @ > /usr/src/sys/kern/uipc_sockbuf.c:148 > Process 12 (intr) thread 0xffffff000242b3a0 (100028) > exclusive sleep mutex if_bridge (if_bridge) r = 0 (0xffffff000282d018) > locked @ /usr/src/sys/modules/if_bridge/../../net/if_bridge.c:2162 > Process 12 (intr) thread 0xffffff00023d3ae0 (100021) > exclusive slepp mutex Giant (Giant) r = 1 (0xffffffff80c6f660) locked @ > /usr/src/sys/dev/usb/usb_transfer.c:3009 > Process 12 (intr) thread 0xffffff00022603a0 (1000007) > exclusive sleep mutex carp_if (carp_if) r = 0 (0xffffff0002730360) > locked @ /usr/src/sys/netinet/ip_carp.c:881 > > >>>>> ps > > This yields a lot of lines, tell me if you want me to report something > special > > > a "bt" would help in this case to see where the bad alloc is. > > Tracing pid 12 tid 100021 td 0xffffff00023d3ae0 > kdb_enter() at kdb_enter+0x3d > ... > > Thank for your interest. > > > !DSPAM:4ba25756174452108219161! >
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