From d41c7baaf027c73d3c769e2223bc010af69cbd04 Mon Sep 17 00:00:00 2001 From: dvossel Date: Mon, 30 Nov 2009 18:58:05 +0000 Subject: Merged revisions 231556 via svnmerge from https://origsvn.digium.com/svn/asterisk/trunk ........ r231556 | dvossel | 2009-11-30 12:55:07 -0600 (Mon, 30 Nov 2009) | 11 lines app_queue crashes randomly, often during call-transfers This patch adds a ref to the queue_ent object's parent call_queue in queue_exec() so the call_queue won't be destroyed while the the queue_ent still holds a pointer to it. (closes issue 0015686) Tested by: dvossel, aragon ........ git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.6.0@231560 f38db490-d61c-443f-a65b-d21fe96a405b --- apps/app_queue.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/apps/app_queue.c b/apps/app_queue.c index 351e6b331..1a8b3b0f7 100644 --- a/apps/app_queue.c +++ b/apps/app_queue.c @@ -626,6 +626,11 @@ static inline void insert_entry(struct call_queue *q, struct queue_ent *prev, st q->head = new; } new->next = cur; + + /* every queue_ent must have a reference to it's parent call_queue, this + * reference does not go away until the end of the queue_ent's life, meaning + * that even when the queue_ent leaves the call_queue this ref must remain. */ + queue_ref(q); new->parent = q; new->pos = ++(*pos); new->opos = *pos; @@ -4766,7 +4771,7 @@ static int queue_exec(struct ast_channel *chan, void *data) AST_APP_ARG(rule); ); /* Our queue entry */ - struct queue_ent qe; + struct queue_ent qe = { 0 }; if (ast_strlen_zero(data)) { ast_log(LOG_WARNING, "Queue requires an argument: queuename[,options[,URL[,announceoverride[,timeout[,agi[,macro[,gosub[,rule]]]]]]]]\n"); @@ -4777,7 +4782,6 @@ static int queue_exec(struct ast_channel *chan, void *data) AST_STANDARD_APP_ARGS(args, parse); /* Setup our queue entry */ - memset(&qe, 0, sizeof(qe)); qe.start = time(NULL); /* set the expire time based on the supplied timeout; */ @@ -5036,6 +5040,13 @@ stop: if (reason != QUEUE_UNKNOWN) set_queue_result(chan, reason); + if (qe.parent) { + /* every queue_ent is given a reference to it's parent call_queue when it joins the queue. + * This ref must be taken away right before the queue_ent is destroyed. In this case + * the queue_ent is about to be returned on the stack */ + qe.parent = queue_unref(qe.parent); + } + return res; } -- cgit v1.2.3