netdev - Re: sky2 panic in 2.6.32.1 under load (new oops)

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Date:	Tue, 29 Dec 2009 14:20:48 -0500
From:	Michael Breuer <mbreuer@...jas.com>
To:	Jarek Poplawski <jarkao2@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	"Berck E. Nash" <flyboy@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	netdev@...r.kernel.org,
	Stephen Hemminger <shemminger@...ux-foundation.org>
Subject: Re: sky2 panic in 2.6.32.1 under load (new oops)

On 12/29/2009 2:15 PM, Jarek Poplawski wrote:
> Michael Breuer wrote, On 12/25/2009 05:28 PM:
>
>    
>>    More data points - I'm able to reliably recreate this now.
>> While I thought it was coincidence, each and every time I hit this issue
>> there is a DHCP renew event immediately before the first error.
>>      
>
> Maybe it's totally unconnected and some different NetworkManager, but FYI,
> there was reported a strange interaction of KNetworkManager vs 2.6.32:
> http://bugzilla.kernel.org/show_bug.cgi?id=14794
>
> Jarek P.
>    
Interesting, but I don't think it's related. The interface in question 
is not under the control of NetworkManager; I'm not using KDE, and the 
connection isn't dropping - just getting DHCPINFORM from the attached 
client that is generating load.
>    
>> The crash occurs while under load - in my case seems that the traffic is
>> actually IPV6 (hadn't noticed that before).
>> I ran nethogs on a remote display - the reported rx rate on the IPV6 smb
>> connection at the time of the lockup was 33889.688 KB/sec on a 1gbit
>> nic. I've got two events like this - don't recall if the earlier one was
>> the exact same # - but it was in the ballpark.
>>
>>      
> ...
>    
>>>> Dec 23 17:33:29 mail NetworkManager:<info>    (eth0): carrier now ON
>>>> (device state 1)
>>>> Dec 23 17:33:30 mail named[4284]: client 114.80.99.2#44695: view
>>>> External: query (cache) './NS/IN' denied
>>>> Dec 23 17:33:38 mail named[4284]: error (connection refused) resolving
>>>> '121.93.27.216.blackholes.mail-abuse.org/A/IN': 168.61.5.195#53
>>>> Dec 23 17:33:44 mail kernel: sky2 eth0: tx timeout
>>>> Dec 23 17:33:44 mail kernel: sky2 eth0: disabling interface
>>>> Dec 23 17:33:44 mail kernel: sky2 eth0: enabling interface
>>>> Dec 23 17:33:44 mail NetworkManager:<info>    (eth0): carrier now OFF
>>>> (device state 1)
>>>> Dec 23 17:33:49 mail kernel: sky2 eth0: Link is up at 1000 Mbps, full
>>>> duplex, flow control both
>>>> Dec 23 17:33:49 mail NetworkManager:<info>    (eth0): carrier now ON
>>>> (device state 1)
>>>> Dec 23 17:33:52 mail dhcpd: DHCPINFORM from 10.0.0.11 via eth0
>>>> Dec 23 17:33:52 mail dhcpd: DHCPACK to 10.0.0.11 (00:1a:92:8d:30:81) via
>>>> eth0
>>>> Dec 23 17:34:01 mail smbd[24783]: [2009/12/23 17:34:01,  0]
>>>> lib/util_sock.c:539(read_fd_with_timeout)
>>>> Dec 23 17:34:01 mail smbd[24783]: [2009/12/23 17:34:01,  0]
>>>> lib/util_sock.c:1491(get_peer_addr_internal)
>>>> Dec 23 17:34:01 mail smbd[24783]:   getpeername failed. Error was
>>>> Transport endpoint is not connected
>>>> Dec 23 17:34:01 mail smbd[24783]:   read_fd_with_timeout: client 0.0.0.0
>>>> read error = Connection reset by peer.
>>>> Dec 23 17:34:04 mail abrt: Kerneloops: Reported 1 kernel oopses to Abrt
>>>> Dec 23 17:34:04 mail abrtd: Directory 'kerneloops-1261607644-1' creation
>>>> detected
>>>> Dec 23 17:34:04 mail abrtd: Getting local universal unique identification
>>>> Dec 23 17:34:04 mail abrtd: New crash, saving
>>>> Dec 23 17:34:04 mail abrtd: Activation of plugin 'RunApp' was not
>>>> successful: Plugin 'RunApp' is not registered
>>>> Dec 23 17:34:04 mail kernel: sky2 eth0: tx timeout
>>>> Dec 23 17:34:04 mail kernel: sky2 eth0: disabling interface
>>>> Dec 23 17:34:04 mail kernel: sky2 eth0: enabling interface
>>>> Dec 23 17:34:04 mail NetworkManager:<info>    (eth0): carrier now OFF
>>>> (device state 1)
>>>> Dec 23 17:34:09 mail kernel: sky2 eth0: Link is up at 1000 Mbps, full
>>>> duplex, flow control both
>>>> Dec 23 17:34:09 mail NetworkManager:<info>    (eth0): carrier now ON
>>>> (device state 1)
>>>> Dec 23 17:34:11 mail logger: ping of potter failed
>>>> Dec 23 17:34:19 mail kernel: sky2 eth0: tx timeout
>>>> Dec 23 17:34:19 mail kernel: sky2 eth0: disabling interface
>>>> Dec 23 17:34:19 mail kernel: sky2 eth0: enabling interface
>>>> Dec 23 17:34:19 mail NetworkManager:<info>    (eth0): carrier now OFF
>>>> (device state 1)
>>>> Dec 23 17:34:22 mail kernel: sky2 eth0: Link is up at 1000 Mbps, full
>>>> duplex, flow control both
>>>> Dec 23 17:34:22 mail NetworkManager:<info>    (eth0): carrier now ON
>>>> (device state 1)
>>>>          

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