Thread (64 messages) 64 messages, 7 authors, 2007-01-12

Re: BUG: soft lockup detected on CPU#0! (2.6.18.2 plus hacks)

From: Ben Greear <hidden>
Date: 2007-01-04 17:03:21

Jarek Poplawski wrote:
On Thu, Jan 04, 2007 at 09:27:07PM +1100, Herbert Xu wrote:
  
quoted
On Thu, Jan 04, 2007 at 09:50:14AM +0100, Jarek Poplawski wrote:
    
quoted
Could you explain? I can see some inet_rtm_newaddr
interrupted. For me it could be e.g.:

after
vconfig add eth0 9

ip addr add dev eth0.9 ...
      
Whether eth0.9 is up or not does not affect this at all.  The spin
locks are initialised (and used) when the first IPv4 address is added,
not when the device comes up.
    
I understand this. I consider IFF_UP as a sign all 
initialisations (open functions including) are
completed and there is permission for working (so
logically, if I would do eth0.9 down all traffic
should be stopped, what probably isn't true now).
  
It is certainly valid for an interface to be IF_UP, but have no IP 
address.  My application
does bring the network device up before it assigns the IP, for instance.

There may be other issues with IF_UP, but that could be handled with a 
different
investigation.  If you have a particular test case that fails with 
802.1Q VLANs, then
I will be happy to work on it...

Thanks,
Ben
Jarek P. 
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-- 
Ben Greear [off-list ref] 
Candela Technologies Inc  http://www.candelatech.com

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