kenmirrors/asterisk
1
0
Fork 0
mirror of https://github.com/asterisk/asterisk.git synced 2025-10-12 15:45:18 +00:00
Code Issues Packages Projects Releases Wiki Activity

res_stasis: Plug reference leak on stolen channels

Browse Source 
When a stasis channel is stolen by another app, the control
structure is unreffed but never unlinked from the app_controls
container.  This causes the channel reference to leak.

Added OBJ_UNLINK to the callback in channel_stolen_cb.

Also added some additional channel lifecycle debug messages to
channel.c.

ASTERISK-27059 #close
Repoorted-by: George Joseph

Change-Id: Ib820936cd49453f20156971785e7f4f182c56e14
This commit is contained in:
George Joseph
2017-06-16 08:31:04 -06:00
committed by Richard Mudgett
parent 0405185357
commit 854a6de819
2 changed files with 24 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
res/res_stasis.c
View File

@@ -1069,8 +1069,18 @@ static void channel_stolen_cb(void *data, struct ast_channel *old_chan, struct a
{
struct stasis_app_control *control;
/* find control */
control = ao2_callback(app_controls, 0, masq_match_cb, old_chan);
/*
* At this point, old_chan is the channel pointer that is in Stasis() and
* has the unknown channel's name in it while new_chan is the channel pointer
* that is not in Stasis(), but has the guts of the channel that Stasis() knows
* about.
*
* Find and unlink control since the channel has a new name/uniqueid
* and its hash has changed. Since the channel is leaving stasis don't
* bother putting it back into the container. Nobody is going to
* remove it from the container later.
*/
control = ao2_callback(app_controls, OBJ_UNLINK, masq_match_cb, old_chan);
if (!control) {
ast_log(LOG_ERROR, "Could not find control for masqueraded channel\n");
return;
@@ -1111,8 +1121,10 @@ static void channel_replaced_cb(void *data, struct ast_channel *old_chan, struct
return;
}
/* find, unlink, and relink control since the channel has a new name and
* its hash has likely changed */
/*
* Find, unlink, and relink control since the channel has a new
* name/uniqueid and its hash has changed.
*/
control = ao2_callback(app_controls, OBJ_UNLINK, masq_match_cb, new_chan);
if (!control) {
ast_log(LOG_ERROR, "Could not find control for masquerading channel\n");