[illumos-Developer] WEBREV: 434 kernel crash dump on comstar iscsit

[Alexander Stetsenko]

This webrev seems to be stale.
Please, review it again.
http://cr.illumos.org/view/2y5oj5em/

On 01/17/2011 04:46 PM, Alexander Stetsenko wrote:
>
> Webrev link is here:
>
> http://cr.illumos.org/view/2y5oj5em/
>
> This fixes crash of comstar when multiple parallel iscsi target 
> creation requests happen.
>
> Crash happened because of there was stale requests in active/waiting 
> queues,
> for instance - ONLINE request after DELETE request, DELETE request 
> removed object (iscsi target)
> and released its memory, so while ONLINE request processing it 
> referred to freed memory or tried
> to "hold"  going to die iscsi target object.
>
> Fix is to remove stale requests from active queue while iscsitgt 
> object is going to be destroyed.
> (waiting queue was removed at all)
>
> A crash is easily reproduced on hw multicore machine.
>
>
>
>
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