[openib-general] Re: [PATCH 1/2] multicast: notify users on membership errors
Sean Hefty
mshefty at ichips.intel.com
Fri Jun 9 11:14:16 PDT 2006
Michael S. Tsirkin wrote:
>>These should eliminate any races with ipoib leaving,
>>then quickly re-joining a group as a result of an event.
>
> Is there a chance this will fix the crashes me and Or were seeing?
It shouldn't. The race that I was referring to only involved whether or not a
MAD is sent when a new join request is received by the ib_multicast module.
I literally spent hours reviewing the ib_multicast code trying to identify how
the crash you and Or saw could occur. My conclusion is that it's impossible.
:) So, at this point, I'm still not sure how it happens. I'll continue to
spend some time looking at this, in the hope that I can at least add in some
assertions that might indicate when the problem starts.
- Sean
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