[svn-commits] mmichelson: branch 1.4 r139456 - /branches/1.4/channels/chan_iax2.c

[SVN commits to the Digium repositories]

Author: mmichelson
Date: Fri Aug 22 11:57:38 2008
New Revision: 139456

URL: http://svn.digium.com/view/asterisk?view=rev&rev=139456
Log:
Prevent a deadlock in chan_iax2 resulting from
incorrect locking order between iax2_pvt and
ast_channel structures.

AST-13


Modified:
    branches/1.4/channels/chan_iax2.c

Modified: branches/1.4/channels/chan_iax2.c
URL: http://svn.digium.com/view/asterisk/branches/1.4/channels/chan_iax2.c?view=diff&rev=139456&r1=139455&r2=139456
==============================================================================
--- branches/1.4/channels/chan_iax2.c (original)
+++ branches/1.4/channels/chan_iax2.c Fri Aug 22 11:57:38 2008
@@ -7851,11 +7851,14 @@
 
 					pbx_builtin_setvar_helper(bridged_chan, "BLINDTRANSFER", iaxs[fr->callno]->owner->name);
 					if (!strcmp(ies.called_number, ast_parking_ext())) {
-						if (iax_park(bridged_chan, iaxs[fr->callno]->owner)) {
+						struct ast_channel *saved_channel = iaxs[fr->callno]->owner;
+						ast_mutex_unlock(iaxsl[fr->callno]);
+						if (iax_park(bridged_chan, saved_channel)) {
 							ast_log(LOG_WARNING, "Failed to park call on '%s'\n", bridged_chan->name);
 						} else {
 							ast_log(LOG_DEBUG, "Parked call on '%s'\n", bridged_chan->name);
 						}
+						ast_mutex_lock(iaxsl[fr->callno]);
 					} else {
 						if (ast_async_goto(bridged_chan, iaxs[fr->callno]->context, ies.called_number, 1))
 							ast_log(LOG_WARNING, "Async goto of '%s' to '%s@%s' failed\n", bridged_chan->name,