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Date: Mon, 03 Feb 2014 14:06:55 -0800 From: Ben Greear <greearb@...delatech.com> To: netdev <netdev@...r.kernel.org> Subject: Re: IPv6 FIB related crash with MACVLANs in 3.9.11+ kernel. On 02/03/2014 02:03 PM, Hannes Frederic Sowa wrote: > Hi Ben, > > On Mon, Feb 03, 2014 at 12:37:52PM -0800, Ben Greear wrote: >> The kernel has some additional patches, but not much to IPv6. >> >> The bug is that when we have lots of mac-vlans on some ixgbe ports >> (500 per interface in this case), and boot up the system with the ports unplugged, >> we get this crash almost every time. Boot-up is going to do normal bootup >> stuff plus create and configure the 1000 mac-vlans, dump their routing >> tables, etc. >> >> We are using one routing table per network device, and some >> ip rules. >> >> If we plug in the ixgbe ports, we do not ever see a crash. >> >> We have not yet tried reproducing it on other drivers, but I suspect >> the issue is not related to ixgbe. >> >> Any ideas on this one? > > Could you bring the machine to a panic again with enabling RT6_DEBUG at the > top of ip6_fib.c and send a dump of the trace? Yes, but it will be a bit until we can create a duplicate machine. We ended up delivering the machine with a note to make sure the interfaces were plugged in (we found the bug hours before shipping the system, of course). Thanks, Ben -- Ben Greear <greearb@...delatech.com> Candela Technologies Inc http://www.candelatech.com -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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