Seg Fault on LTE_fdd_enodb

[David Lake]

Hello

I have a problem running the eNodeB code. All appears to build correctly, but when I run it, I get this:

LTE_fdd_enodeb
linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.007.002-49-g9eb403f4

LTE FDD ENB
Please connect to control port 30000
-- Operating over USB 2.
-- Initialize CODEC control...
-- Initialize Radio control...
-- Performing register loopback test... pass
-- Performing register loopback test... pass
-- Performing CODEC loopback test... pass
-- Performing CODEC loopback test... pass
-- Asking for clock rate 32.000000 MHz
-- Actually got clock rate 32.000000 MHz
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
-- Asking for clock rate 30.720000 MHz
-- Actually got clock rate 30.720000 MHz
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOULLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLOLLLLLLLLLSegmentation fault (core dumped)

Running on Ubunutu 12.04, patched to latest versions on a T60 laptop.

Any clues pleases ?

Thanks

David

[David Lake]

Bit more of a clue from gdb, but no idea where to look next:

0x0031d962 in __convert_sc16_item32_le_1_fc32_1_PRIORITY_SIMD::operator()(uhd::ref_vector<void const*=""> const&, uhd::ref_vector<void*> const&, unsigned int) ()
from /usr/local/lib/libuhd.so.003

[bwojtowi]

David,

From gdb, can you run the bt command and post the results? The current
version of LTE_fdd_enodeb is rather unstable. I'm working on the next
release now, which should be much more stable.

Thanks,
Ben

On Sat, Jul 26, 2014 at 1:16 PM, David Lake dlake02@users.sf.net wrote:

Bit more of a clue from gdb, but no idea where to look next:

0x0031d962 in
__convert_sc16_item32_le_1_fc32_1_PRIORITY_SIMD::operator()(uhd::ref_vector<void const*=""> const&, uhd::ref_vector<void*> const&, unsigned int) ()
from /usr/local/lib/libuhd.so.003

---

Seg Fault on LTE_fdd_enodb
https://sourceforge.net/p/openlte/discussion/general/thread/b09c9b89/?limit=25#016b

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[David Lake]

Ben:

-- Loading FPGA image: /usr/local/share/uhd/images/usrp_b210_fpga.bin... done
-- Operating over USB 2.
[New Thread 0xac0f7b40 (LWP 2485)]
-- Detecting internal GPSDO.... No GPSDO found
-- not found
-- Initialize CODEC control...
-- Initialize Radio control...
-- Performing register loopback test... pass
-- Performing register loopback test... pass
-- Performing CODEC loopback test... pass
-- Performing CODEC loopback test... pass
-- Asking for clock rate 32.000000 MHz
-- Actually got clock rate 32.000000 MHz
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
-- Asking for clock rate 30.720000 MHz
-- Actually got clock rate 30.720000 MHz
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
[New Thread 0xab8f6b40 (LWP 2486)]
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOULLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLOLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLOLLLLLLLLLLL
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xac8f8b40 (LWP 2484)]
0xb769763b in ?? () from /lib/i386-linux-gnu/libc.so.6
(gdb) bt

0 0xb769763b in ?? () from /lib/i386-linux-gnu/libc.so.6

1 0xb73dee4d in ?? () from /lib/i386-linux-gnu/libusb-1.0.so.0

2 0xb73df971 in libusb_handle_events_timeout_completed ()

from /lib/i386-linux-gnu/libusb-1.0.so.0

3 0xb73dfaab in libusb_handle_events_timeout ()

from /lib/i386-linux-gnu/libusb-1.0.so.0

4 0xb79c8143 in libusb_session_impl::libusb_event_handler_task(libusb_context*) () from /usr/local/lib/libuhd.so.003

5 0xb79c81db in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf1<void,="" libusb_session_impl,="" libusb_context*="">, boost::_bi::list2<boost::_bi::value<libusb_session_impl*>, boost::_bi::value<libusb_context*> > >, void>::invoke(boost::detail::function::function_buffer&) ()

from /usr/local/lib/libuhd.so.003

6 0xb7cfe526 in task_impl::task_loop(boost::function<void ()=""> const&) ()

from /usr/local/lib/libuhd.so.003

7 0xb7cf8e56 in boost::detail::thread_data<boost::_bi::bind_t<void, boost::_mfi::mf1<void,="" task_impl,="" boost::function<void="" ()=""> const&>, boost::_bi::list2<boost::_bi::value<task_impl*>, boost::_bi::value<boost::function<void ()=""> > > > >::run() () from /usr/local/lib/libuhd.so.003

8 0xb74ec1cc in ?? () from /usr/lib/libboost_thread.so.1.48.0

9 0xb7e5ed4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0

10 0xb7710bae in clone () from /lib/i386-linux-gnu/libc.so.6

(gdb)

Hope this helps !

David

[bwojtowi]

David,

I'm not sure what the actual cause is, but I have heard from others that
operating over USB2.0 causes these seg faults. I'll look into it a bit
more and see if I can't find a resolution.

Thanks,
Ben

On Mon, Jul 28, 2014 at 6:10 PM, David Lake dlake02@users.sf.net wrote:

Ben:

-- Loading FPGA image: /usr/local/share/uhd/images/usrp_b210_fpga.bin...
done

-- Operating over USB 2.
[New Thread 0xac0f7b40 (LWP 2485)]
-- Detecting internal GPSDO.... No GPSDO found
-- not found

-- Initialize CODEC control...
-- Initialize Radio control...
-- Performing register loopback test... pass
-- Performing register loopback test... pass
-- Performing CODEC loopback test... pass
-- Performing CODEC loopback test... pass
-- Asking for clock rate 32.000000 MHz
-- Actually got clock rate 32.000000 MHz
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
-- Asking for clock rate 30.720000 MHz
-- Actually got clock rate 30.720000 MHz
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
[New Thread 0xab8f6b40 (LWP 2486)]

OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOULLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLOLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLOLLLLLLLLLLLLLLLLOLLLLLLLLLLL
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xac8f8b40 (LWP 2484)]
0xb769763b in ?? () from /lib/i386-linux-gnu/libc.so.6
(gdb) bt

0 0xb769763b in ?? () from /lib/i386-linux-gnu/libc.so.6 1 0xb73dee4d in
?? () from /lib/i386-linux-gnu/libusb-1.0.so.0 2 0xb73df971 in
libusb_handle_events_timeout_completed ()

from /lib/i386-linux-gnu/libusb-1.0.so.0
3 0xb73dfaab in libusb_handle_events_timeout ()

from /lib/i386-linux-gnu/libusb-1.0.so.0
4 0xb79c8143 in
libusb_session_impl::libusb_event_handler_task(libusb_context*) () from
/usr/local/lib/libuhd.so.003 5 0xb79c81db in
boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf1<void,="" libusb_session_impl,="" libusb_context*="">,
boost::_bi::list2<boost::_bi::value<libusb_session_impl*>,
boost::_bi::value<libusb_context*> > >,
void>::invoke(boost::detail::function::function_buffer&) ()

from /usr/local/lib/libuhd.so.003
6 0xb7cfe526 in task_impl::task_loop(boost::function<void ()=""> const&) ()

from /usr/local/lib/libuhd.so.003
7 0xb7cf8e56 in boost::detail::thread_data<boost::_bi::bind_t<void, boost::_mfi::mf1<void,="" task_impl,="" boost::function<void="" ()="">
const&>, boost::_bi::list2<boost::_bi::value<task_impl*>,
boost::_bi::value<boost::function<void ()=""> > > > >::run() () from
/usr/local/lib/libuhd.so.003 8 0xb74ec1cc in ?? () from
/usr/lib/libboost_thread.so.1.48.0 9 0xb7e5ed4c in start_thread () from
/lib/i386-linux-gnu/libpthread.so.0 10 0xb7710bae in clone () from
/lib/i386-linux-gnu/libc.so.6

(gdb)

Hope this helps !

David

Seg Fault on LTE_fdd_enodb
https://sourceforge.net/p/openlte/discussion/general/thread/b09c9b89/?limit=25#016b/b8ac/b41a

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[David Lake]

Hi Ben

It looks like this could be a UHD/USB2.0 limitation.

I've just run a set of tests with benchmark_tx at various speeds from 1Msps up to 10Msps. Anything above about 3.5Msps causes underrun errors on the UHD interface.

David