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Fix deadlock in sig_pri when hanging up. 

The pri_dchannel thread currently violates locking order by locking the private
and then attempting to queue a frame, which needs to lock the channel. Queueing
a frame is unneccesary though and is actually a regression since sig_pri.
All the places that currently use ast_softhangup_nolock now will just set the
softhangup value directly as before.

(closes issue #17216)
Reported by: lmsteffan
Patches: 
      bug17216.patch uploaded by jpeeler (license 325)



git-svn-id: http://svn.digium.com/svn/asterisk/trunk@261866 f38db490-d61c-443f-a65b-d21fe96a405b
This commit is contained in:
jpeeler 2010-05-07 15:33:52 +00:00
parent 25c691056b
commit c808b1c546
1 changed files with 10 additions and 10 deletions
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20
channels/sig_pri.c
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@ -2886,7 +2886,7 @@ static void *pri_dchannel(void *vpri)
ast_log(LOG_WARNING, "The PRI Call have not been destroyed\n");
}
if (p->owner)
ast_softhangup_nolock(p->owner, AST_SOFTHANGUP_DEV);
p->owner->_softhangup |= AST_SOFTHANGUP_DEV;
}
sig_pri_set_alarm(p, 1);
}
@ -2925,7 +2925,7 @@ static void *pri_dchannel(void *vpri)
}
/* Force soft hangup if appropriate */
if (pri->pvts[chanpos]->owner)
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
pri->pvts[chanpos]->owner->_softhangup |= AST_SOFTHANGUP_DEV;
sig_pri_unlock_private(pri->pvts[chanpos]);
}
} else {
@ -2938,7 +2938,7 @@ static void *pri_dchannel(void *vpri)
pri->pvts[x]->call = NULL;
}
if (pri->pvts[x]->owner)
ast_softhangup_nolock(pri->pvts[x]->owner, AST_SOFTHANGUP_DEV);
pri->pvts[x]->owner->_softhangup |= AST_SOFTHANGUP_DEV;
sig_pri_unlock_private(pri->pvts[x]);
}
}
@ -3664,7 +3664,7 @@ static void *pri_dchannel(void *vpri)
switch (pri->pvts[chanpos]->owner->_state) {
case AST_STATE_BUSY:
case AST_STATE_UP:
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
pri->pvts[chanpos]->owner->_softhangup |= AST_SOFTHANGUP_DEV;
break;
default:
switch (e->hangup.cause) {
@ -3680,7 +3680,7 @@ static void *pri_dchannel(void *vpri)
pri_queue_control(pri, chanpos, AST_CONTROL_CONGESTION);
break;
default:
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
pri->pvts[chanpos]->owner->_softhangup |= AST_SOFTHANGUP_DEV;
break;
}
break;
@ -3765,7 +3765,7 @@ static void *pri_dchannel(void *vpri)
switch (pri->pvts[chanpos]->owner->_state) {
case AST_STATE_BUSY:
case AST_STATE_UP:
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
pri->pvts[chanpos]->owner->_softhangup |= AST_SOFTHANGUP_DEV;
break;
default:
switch (e->hangup.cause) {
@ -3781,7 +3781,7 @@ static void *pri_dchannel(void *vpri)
pri_queue_control(pri, chanpos, AST_CONTROL_CONGESTION);
break;
default:
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
pri->pvts[chanpos]->owner->_softhangup |= AST_SOFTHANGUP_DEV;
break;
}
break;
@ -3877,7 +3877,7 @@ static void *pri_dchannel(void *vpri)
if (pri->pvts[chanpos]->owner) {
ast_log(LOG_WARNING, "Got restart ack on channel %d/%d with owner on span %d\n", pri->pvts[chanpos]->logicalspan,
pri->pvts[chanpos]->prioffset, pri->span);
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
pri->pvts[chanpos]->owner->_softhangup |= AST_SOFTHANGUP_DEV;
}
pri->pvts[chanpos]->resetting = 0;
ast_verb(3, "B-channel %d/%d successfully restarted on span %d\n", pri->pvts[chanpos]->logicalspan,
@ -3898,7 +3898,7 @@ static void *pri_dchannel(void *vpri)
if (pri->pvts[chanpos]->owner) {
ast_log(LOG_WARNING, "Got restart ack on channel %d/%d span %d with owner\n",
PRI_SPAN(e->restartack.channel), PRI_CHANNEL(e->restartack.channel), pri->span);
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
pri->pvts[chanpos]->owner->_softhangup |= AST_SOFTHANGUP_DEV;
}
pri->pvts[chanpos]->resetting = 0;
ast_verb(3, "B-channel %d/%d successfully restarted on span %d\n", pri->pvts[chanpos]->logicalspan,
@ -4889,7 +4889,7 @@ void sig_pri_chan_alarm_notify(struct sig_pri_chan *p, int noalarm)
ast_log(LOG_WARNING, "The PRI Call has not been destroyed\n");
}
if (p->owner)
ast_softhangup_nolock(p->owner, AST_SOFTHANGUP_DEV);
p->owner->_softhangup |= AST_SOFTHANGUP_DEV;
}
}
}