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crash on transfer

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handle_invite_replaces() attempts to uplock a pvt's
owner channel without first verifing that it exists.

(issue #16027)



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@222542 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
David Vossel
2009-10-07 17:41:21 +00:00
parent 54faffa07f
commit 9cc4a5b792
1 changed files with 4 additions and 1 deletions
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channels/chan_sip.c
+4 -1
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@@ -14229,7 +14229,10 @@ static int handle_invite_replaces(struct sip_pvt *p, struct sip_request *req, in
can't harm */
transmit_response_with_sdp(p, "200 OK", req, XMIT_RELIABLE);
/* Do something more clever here */
ast_channel_unlock(c);
if (c) {
*nounlock = 1;
ast_channel_unlock(c);
}
ast_channel_unlock(replacecall);
ast_mutex_unlock(&p->refer->refer_call->lock);
return 1;