From: Ben Greear <greearb@candelatech.com>
To: netdev <netdev@vger.kernel.org>
Subject: Re: IPv6 FIB related crash with MACVLANs in 3.9.11+ kernel.
Date: Mon, 03 Feb 2014 14:06:55 -0800 [thread overview]
Message-ID: <52F012FF.9030105@candelatech.com> (raw)
In-Reply-To: <20140203220323.GB17999@order.stressinduktion.org>
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@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
next prev parent reply other threads:[~2014-02-03 22:06 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-03 20:37 IPv6 FIB related crash with MACVLANs in 3.9.11+ kernel Ben Greear
2014-02-03 22:03 ` Hannes Frederic Sowa
2014-02-03 22:06 ` Ben Greear [this message]
2014-02-08 16:43 ` Ben Greear
2014-02-08 17:23 ` Hannes Frederic Sowa
2014-09-25 22:24 ` Hongmei Li
2014-09-28 12:11 ` Hannes Frederic Sowa
2014-09-29 18:15 ` Hongmei Li
2014-09-29 18:44 ` Ben Greear
2014-09-29 19:03 ` Hannes Frederic Sowa
2014-09-29 19:48 ` Ben Greear
2014-09-29 20:39 ` Cong Wang
2014-09-29 21:24 ` Ben Greear
2014-10-12 11:42 ` Vladislav Yasevich
2014-10-13 18:06 ` Ben Greear
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