From 80ba9b5dd62cc8bfd10dae2f3b63420ef1e8452d Mon Sep 17 00:00:00 2001
From: Holger Hans Peter Freyther <holger@moiji-mobile.com>
Date: Fri, 27 Dec 2013 15:26:42 +0100
Subject: gsm_04_11: Speculative fix for MT SMS and SAPI 'n Reject

I am not sure why it is crashing so this is a speculative fix based on
something we already did in 3e9b2ec257bc064b866ce6a2735206dc6131f615.

 #0  sms_find_pending (smsq=0x2706300, sms=<optimized out>) at sms_queue.c:77
 #1  sms_sms_cb (subsys=<optimized out>, signal=4, handler_data=0x26e2270,
     signal_data=0x7fffdac256c0) at sms_queue.c:396
 #2  0x00007fcdea94394c in osmo_signal_dispatch (subsys=1, signal=4,
     signal_data=0x7fffdac256c0) at signal.c:105
 #3  0x000000000042acc0 in send_signal (sig_no=<optimized out>, trans=<optimized out>,
     sms=<optimized out>, paging_result=<optimized out>) at gsm_04_11.c:124
 #4  0x000000000042c8e2 in gsm411_sapi_n_reject (conn=0x2722d30) at gsm_04_11.c:999
 #5  0x00000000004085d3 in send_sapi_reject (link_id=<optimized out>, conn=<optimized out>)
     at bsc_api.c:733
 #6  rll_ind_cb (_data=<optimized out>, lchan=<optimized out>, link_id=<optimized out>,
     rllr_ind=<optimized out>) at bsc_api.c:755
 #7  rll_ind_cb (lchan=<optimized out>, link_id=<optimized out>, _data=<optimized out>,
     rllr_ind=<optimized out>) at bsc_api.c:736
 #8  0x000000000041f522 in complete_rllr (rllr=<optimized out>, type=<optimized out>)
     at bsc_rll.c:55
 #9  0x00007fcdea9433bc in osmo_timers_update () at timer.c:243
 #10 0x00007fcdea94369b in osmo_select_main (polling=0) at select.c:133
 #11 0x0000000000406fbc in main (argc=9, argv=<optimized out>) at bsc_hack.c:346
---
 openbsc/src/libmsc/gsm_04_11.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'openbsc/src/libmsc/gsm_04_11.c')

diff --git a/openbsc/src/libmsc/gsm_04_11.c b/openbsc/src/libmsc/gsm_04_11.c
index 19b6030c5..cc93ae63f 100644
--- a/openbsc/src/libmsc/gsm_04_11.c
+++ b/openbsc/src/libmsc/gsm_04_11.c
@@ -988,6 +988,7 @@ void gsm411_sapi_n_reject(struct gsm_subscriber_connection *conn)
 
 	net = conn->bts->network;
 
+restart:
 	llist_for_each_entry_safe(trans, tmp, &net->trans_list, entry)
 		if (trans->conn == conn) {
 			struct gsm_sms *sms = trans->sms.sms;
@@ -1001,6 +1002,7 @@ void gsm411_sapi_n_reject(struct gsm_subscriber_connection *conn)
 			sms_free(sms);
 			trans->sms.sms = NULL;
 			trans_free(trans);
+			goto restart;
 		}
 }
 
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