Date: Mon, 20 Jul 2015 22:37:17 -0400 From: Jason Unovitch <jason.unovitch@gmail.com> To: Nikos Vassiliadis <nvass@gmx.com>, freebsd-net@freebsd.org Subject: Re: [Bug 200319] Bridge+CARP crashes/freezes Message-ID: <55ADB05D.9060600@gmail.com> In-Reply-To: <55ACE900.1060603@gmx.com> References: <bug-200319-2472@https.bugs.freebsd.org/bugzilla/> <bug-200319-2472-AdqyzfFyAT@https.bugs.freebsd.org/bugzilla/> <55ACE900.1060603@gmx.com>
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On 07/20/2015 08:26, Nikos Vassiliadis wrote: > Hi, > > regarding this bug... When carp information is about to be printed, > it stops. All network activity has stopped by then. For example: > >> bridge0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> >> metric 0 mtu 1280 >> ether 02:48:9e:59:98:00 >> inet 156.0.0.2 netmask 0xffffffc0 broadcast 156.0.0.63 >> inet 156.0.0.10 netmask 0xffffffc0 broadcast 156.0.0.63 vhid 10 >> nd6 options=9<PERFORMNUD,IFDISABLED> >> load: 1.18 cmd: ifconfig 1683 [running] 4.14r 0.00u 0.01s 35% 2268k >> load: 1.18 cmd: ifconfig 1683 [running] 4.59r 0.00u 0.01s 36% 2268k >> load: 1.18 cmd: ifconfig 1683 [running] 4.85r 0.00u 0.01s 39% 2268k >> load: 1.18 cmd: ifconfig 1683 [running] 5.05r 0.00u 0.01s 41% 2268k >> load: 1.18 cmd: ifconfig 1683 [running] 5.27r 0.00u 0.01s 39% 2268k >> load: 1.18 cmd: ifconfig 1683 [running] 5.48r 0.00u 0.01s 41% 2268k >> load: 1.18 cmd: ifconfig 1683 [running] 5.69r 0.00u 0.01s 43% 2268k >> ^C^C^C^Z >> >> >> >> >> >> load: 1.86 cmd: ifconfig 1683 [*carp_if] 31.26r 0.00u 30.67s 88% 2268k >> load: 1.86 cmd: ifconfig 1683 [*carp_if] 31.42r 0.00u 30.67s 88% 2268k >> ^Z^Z^Z^C^C^C^C >> >> load: 0.22 cmd: ifconfig 1683 [*carp_if] 645.27r 0.00u 30.67s 0% 2268k >> load: 0.21 cmd: ifconfig 1683 [*carp_if] 645.81r 0.00u 30.67s 0% 2268k >> load: 0.21 cmd: ifconfig 1683 [*carp_if] 646.17r 0.00u 30.67s 0% 2268k > > > Eventually the kernel will panic: >> panic: deadlkres: possible deadlock detected for 0xfffff800045b44a0, >> blocked for 900246 ticks > > > Is this the same bug, Jason? > > I could try the patch on my bhyve cluster. > > Thanks, > Nikos Nikos, The report at https://bugs.FreeBSD.org/200319 and associated pfSense report at https://redmine.pfSense.org/issues/4607 indicate that network traffic sent to the CARP IP is causing the issue. I don't see anything that mentions printing the information. However with that said, I'm not familiar with the issue as I've never used CARP. I'm just doing my due diligence passing on a report that the patch resolved another user's issue over in the FreeBSD Forums: https://forums.FreeBSD.org/threads/carp-bridge-crashes-freezes-on-freebsd-10.52427 Hope that helps. Jason
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