- **Milestone**: 4.6.2 --> 4.7.2
---
** [tickets:#1589] EVT : Segfault in saEvtEventDataGet in multithreaded app**
**Status:** unassigned
**Milestone:** 4.7.2
**Created:** Tue Nov 10, 2015 01:22 AM UTC by Srikanth R
**Last Updated:** Thu Mar 17, 2016 02:10 PM UTC
**Owner:** nobody
Changeset : 7071
Application : EDSV multi threaded application with multiple publisher threads
and single subscriber thread.
Steps :
-> Each publisher thread creates a channel and waits for the subscriber.
->The subscriber thread comes up and subscribes to all the channels created
by the publishers.
-> Now all the publishers publish the event.
-> In the event deliver callback, application segfaulted for the
saEvtEventDataGet call.
-> Below is the back trace
0 0x00007ffff75a6224 in saEvtEventDataGet (eventHandle=4289724417,
eventData=0x7fffffffde30, eventDataSize=0x7fffffffde28) at eda_saf_api.c:1944
1 0x000000000040113b in evtDeliverCallback (subscriptionId=4,
eventHandle=4285530146, eventDataSize=20) at multithread/eda_thread1.c:25
2 0x00007ffff75a9ed0 in eda_hdl_cbk_rec_prc (cb=0x6260c0, msg=0x6279f0,
reg_cbk=0x6268e0) at eda_hdl.c:691
3 0x00007ffff75aa20d in eda_hdl_cbk_dispatch_all (cb=0x6260c0,
hdl_rec=0x6268d0) at eda_hdl.c:836
4 0x00007ffff75a9d85 in eda_hdl_cbk_dispatch (cb=0x6260c0, hdl_rec=0x6268d0,
flags=SA_DISPATCH_ALL) at eda_hdl.c:641
5 0x00007ffff75a1e5a in saEvtDispatch (evtHandle=4289724417,
dispatchFlags=SA_DISPATCH_ALL) at eda_saf_api.c:351
6 0x000000000040194d in subscriber_loop (thread_number=1) at
multithread/eda_thread1.c:213
7 0x0000000000401b64 in main (argc=1, argv=0x7fffffffe398) at
multithread/eda_thread1.c:271
(gdb) p *evt_hdl_rec
$2 = {event_hdl = 1, priority = 1 '\001', retention_time = 66370, publish_time
= 140737488348072, publisher_name = {length = 4316,
value =
"@\000\000\000\000\000\360\242c\000\000\000\000\000\001\000\240\377", '\000'
<repeats 12 times>,
"!\000\000\000\000\000\000\000\002\000\000\000\377\177\000\000خY\367\377\177\000\000\000\000\000\000\000\000\000\000!\001\000\000\000\000\000\000\017",
'\000' <repeats 15 times>, "\001", '\000' <repeats 15 times>"\230,
\266\371\366\377\177\000\000\001", '\000' <repeats 144 times>}, pattern_array =
0x0, event_data_size = 0, evt_data = 0x0, evt_type = 0 '\000', parent_chan =
0x0, next = 0x0, pub_evt_id = 0,
del_evt_id = 0}
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