# Original code

/* Read monitor thread function. */
static void *do_chanreads(void *pvt)
{    
…………………..
// Using trylock here to prevent deadlock when channel is hungup
                        // (ast_hangup() immediately gets lock)
                        if (p->owner && (ast_mutex_trylock(&p->owner->lock)==0)
) {
                                ast_queue_frame(p->owner, fr);
                                ast_mutex_unlock(&p->owner->lock);
                                if (option_verbose > 4) {
                                        short * data = (short*)readbuf;
                                        ast_verbose("Read channel %s (codec=%d)
%d %d\n", p->dev, fmt, data[0], data[1] );
                                }
……………..








-------------------------------------------------------------------------

# Patch


        /* Stop record */
        p->stopreads = 1;
+       sleep(1);       //to prevent immediately lock
        if( p->readthread )
                pthread_join(p->readthread, NULL); 
 
@@ -1455,7 +1456,8 @@
 
                        // Using trylock here to prevent deadlock when channel is hungup
                        // (ast_hangup() immediately gets lock)
-                       if (p->owner && (ast_mutex_trylock(&p->owner->lock)==0) ) {
+       if (p->owner  && !p->stopreads ) {
+                               ast_mutex_lock(&p->owner->lock);
                                ast_queue_frame(p->owner, fr);
                                ast_mutex_unlock(&p->owner->lock);
                                if (option_verbose > 4) {