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Re: [lvs-users] Load-balancing: FTP data traffic results in Kernel oops

To: K b <urbestfriend@xxxxxxxxx>
Subject: Re: [lvs-users] Load-balancing: FTP data traffic results in Kernel oops in 2.6.36.2 , x86_64
Cc: lvs-users@xxxxxxxxxxxxxxxxxxxxxx, Julian Anastasov <ja@xxxxxx>
From: Simon Horman <horms@xxxxxxxxxxxx>
Date: Wed, 7 Sep 2011 18:10:52 +0900
On Wed, Aug 24, 2011 at 05:54:41PM +0530, K b wrote:
> hello,
> 
> I was testing IPVS to load-balance FTP servers in linux 2.6.36.2 x86_64 
> system.
> 
> My configuration is below:
> 
> 
> -A -t 10.11.20.132:21 -s wrr
> -a -t 10.11.20.132:21 -r 192.168.132.231:21 -m -w 100
> -a -t 10.11.20.132:21 -r 192.168.132.232:21 -m -w 100
> 
> This is resulting in system oops whenever FTP client fetches data ,
> say using , "ls" or "mput". I tested both active and passive mode,
> oops happens in both scenario.
> 
> I did see kernel mainline for any fix, but there are no fix which has
> gone in after 2.6.36.2 for this issue.
> 
> 
> This is what I managed to write down. The first part scrolled off
> screen with no scrollback - and no logfiles.
> 
> ip_forward
> ip_recv_finsih
> ip_recv
> __netif_recieve_skb
> e1000_clean_rx_irq
> ? enqueue_task
> net_rx_action
> __do_softirq
> call_softirq
> irq_exit
> do_IRQ
> ret_from_intr
> native_safe_halt
> default_idle
> c1e_idle
> cpu_dile
> rest_init
> start_kernel
> x86_64_start_resevation
> x86_64_start_kernel
> 
> Apologies if this is already fixed in mainline, please point me towards the 
> fix.

Hi,

apologies for not responding earlier.

The only outstanding patch I am aware of for 2.6.36.2 is the following.
http://marc.info/?l=linux-netdev&m=131254033002982&w=2

However, I am not sure if it relates to the problem you are seeing or not.

Would it be possible for you to a) test the patch and b) post the oops if
you see it with the patch applied?


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