Date: Fri, 20 Jan 2017 16:44:27 +0000 From: Roger Pau =?iso-8859-1?Q?Monn=E9?= <roger.pau@citrix.com> To: "Andrey V. Elsukov" <bu7cher@yandex.ru> Cc: Trond =?iso-8859-1?Q?Endrest=F8l?= <Trond.Endrestol@fagskolen.gjovik.no>, SK <fbstable@cps-intl.org>, <freebsd-xen@freebsd.org>, "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org>, <freebsd-virtualization@freebsd.org> Subject: Re: FreeBSD 11 Stable on a Xen :: bridge0 crashing server Message-ID: <20170120164427.gghtafg2cfugnoro@dhcp-3-221.uk.xensource.com> In-Reply-To: <a54f9127-fa42-f90a-217b-e7c7add6fb80@yandex.ru> References: <7c06aea6-0b10-e9c0-d750-f42d4a406258@cps-intl.org> <alpine.BSF.2.20.1701201646350.1006@mail.fig.ol.no> <a54f9127-fa42-f90a-217b-e7c7add6fb80@yandex.ru>
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On Fri, Jan 20, 2017 at 07:20:15PM +0300, Andrey V. Elsukov wrote: > On 20.01.2017 18:57, Trond Endrestøl wrote: > > > Here is the situation: > > > I have a VPS server from a well reputed provider (and they deserve the > > > reputation), running FreeBSD 11 stable x64 under Xen Full Virtualization > > > (HVM). I have the xn0 interface which is working fine. I intend to use VIMAGE, > > > so I compiled the kernel, added cloned_interface="bridge0" and restarted the > > > server. But as soon as I am attaching the xn0 to bridge0, the kernel is > > > panicking and the server restarting. > > > Any suggestion/pointer/test-instruction is highly appreciated. > > > > The code crashes at line 427 of sys/netinet/if_ether.c: > > > > ARPSTAT_INC(txrequests); > > > > See > > https://svnweb.freebsd.org/base/stable/11/sys/netinet/if_ether.c?view=annotate#l427 > > > > stable/11 has problems accounting the outgoing octets of any xn > > interface, although this isn't connected to your case. > > > > Just to rule out any uncertainty, try this patch: > > > > https://svnweb.freebsd.org/base?view=revision&revision=308126 > > > > See PR 213439, > > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213439 > > > > Note, I'm not a developer nor a committer, just a humble sysadmin. > > This problem is unrelated. ARP statistics is global and isn't related to > some specific interface. IMHO, the kernel panics due to missing VNET > context. As I see from the code in sys/dev/xen, it is not capable with > VIMAGE. I cannot really look into this right now due to lack of time, but I'm more than happy to review/apply patches in order to fix this. Roger.
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