Facing problem in testing Suspend request

> Hi,
> 
> I am working on WAP protocol stack. When I am sending Suspend request
> in CONNECTED state, 
> Gateway wapbox is exiting with panic message as below :
> 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~
> 2002-12-18 18:56:56 [5] DEBUG: WTP: Created WTPRespMachine 0x8133ed0
> (13)
> 2002-12-18 18:56:56 [5] DEBUG: WTP: resp_machine 13, state LISTEN,
> event RcvInvoke.
> 2002-12-18 18:56:56 [5] DEBUG: WTP 13: New state LISTEN
> 2002-12-18 18:56:56 [5] DEBUG: WTP: Destroying WTPRespMachine
> 0x8133ed0 (13)
> 2002-12-18 18:56:56 [1] DEBUG: WSP: machine 0x8132808, state
> CONNECTED, event TR-Invoke.ind
> 2002-12-18 18:56:56 [1] DEBUG: WSP 9: New state SUSPENDED
> 2002-12-18 18:56:56 [6] PANIC: gwlib/list.c:426: lock: Assertion `list
> != NULL' failed.
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~
> 
> I am not understanding why it's happening, when i gone through code
> It's following the same 
> path for each and every messages. Please let me know the reason. 
> 
> With Regards
> Sunil B. Khawas
> Convergelabs S/W Tech. Pvt. Ltd.
> 14th Floor, Signature Tower - B,
> South City - 1, Gurgaon - 122001
> Haryana State (India)
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