[Discuss-gnuradio] Help on OpenBTS Segmentation Fault

[T. W.]

This is about an OpenBTS Running Error.

I followed all the instructions on the following page and installed
OpenBTS and all the other components needed: gnuradio, asterisk, zoiper,
etc.
http://gnuradio.org/trac/wiki/OpenBTS/BuildingAndRunning

My environment: Ubuntu 8.10 Desktop 32 bits version on an Acer laptop
with Intel Pentium Dual-Core T3200.

OpenBTS: Build 10776
GNURadio: Build 10776

First I powered up USRP with two RFX900 boards connected in the
recommended way.

Second, I started asterisk and zoiper. I could see the test user in
Zoiper  registered with asterisk.

Then I started the ./transceiver, the display was:

./Transceiver$ ./transceiver
1238941861.849326 3083531968: creating USRP device...
1238941861.849575 3083531968: making USRP device..

Then I opened another terminal window and started OpenBTS900, the
displayed messages were like

./apps$ ./OpenBTS900
1238941919.502511 3081861728: GSMConfig.cpp:86 mSI1Frame primitive=DATA
raw=(0101010100000110000110011000111000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011111000000000000000000000101011)
1238941919.502693 3081861728: GSMConfig.cpp:95 mSI2Frame primitive=DATA
raw=(0101100100000110000110101000111000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011111111111110000000000000000000)
1238941919.502730 3081861728: GSMConfig.cpp:107 mSI3Frame primitive=DATA
raw=(0100100100000110000110110000000000000000000010011111000101010101000000101001101101010001000000000000100000101111110000000000000011111000000000000000000000101011001010110010101100101011)
1238941919.502763 3081861728: GSMConfig.cpp:116 mSI4Frame primitive=DATA
raw=(0011000100000110000111000000100111110001010101010000001010011011110000000000000011111000000000000000000000101011001010110010101100101011001010110010101100101011001010110010101100101011)
1238941919.502796 3081861728: GSMConfig.cpp:121 mSI5Frame
primitive=UNIT_DATA
raw=(000001100001110110011110000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000)
1238941919.502821 3081861728: GSMConfig.cpp:129 mSI6Frame
primitive=UNIT_DATA
raw=(0000011000011110000000000000000000001001111100010101010100000010100110110010111111111111)
1238941919.625639 2986560400: SIPInterface.cpp:147 SIPInterface::drive()
blocking on socket

... ...

But two seconds later, the ./transceiver program had a segmentation
fault.

1238941981.989029 3081862032: radioInterface.cpp:250 converted 864 radio
samples into 585 transceiver samples
1238941981.989053 3081862032: radioInterface.cpp:374 FN: 60
1238941981.989070 3081862032: radioInterface.cpp:382 receiveFIFO: wrote
radio vector at time: 3:61, new size: 5
1238941981.989082 3081862032: radioInterface.cpp:374 FN: 61
1238941981.989101 3081862032: radioInterface.cpp:382 receiveFIFO: wrote
radio vector at time: 4:61, new size: 6
1238941981.989120 3081862032: radioInterface.cpp:374 FN: 61
1238941981.989136 3081862032: radioInterface.cpp:382 receiveFIFO: wrote
radio vector at time: 5:61, new size: 7
1238941981.989147 3081862032: radioInterface.cpp:374 FN: 61
1238941981.989157 3081862032: radioInterface.cpp:382 receiveFIFO: wrote
radio vector at time: 6:61, new size: 8
1238941981.989183 3081862032: increment!!!
Segmentation fault

It is very consistent this way every time I ran it... It first happened
with build 10666 of gnuradio and openbts. Then I uninstalled them and
installed build 10776 of both. But the error still exists.

Please shed some light on this error and how I should debug.

Thanks a lot!
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