Re: (no subject)

On Thu, Jan 10, 2013 at 2:04 PM, <[email protected]> wrote:

> [quote=peter]On Wed, Jan 9, 2013 at 9:43 AM,  wrote:
>
>  > I use Orocos toolchain 2.6 under ubuntu 10.04 with RTAI 3.9. The system
>  > hangs
>  > when an activity is created and only if the module "rtai_sem" is loaded.
>  >
>
> The rtai_sem module must be loaded. It has been many years since I tested
> Orocos against RTAI/LXRT. Solving this will require typical debugging
> skills such as analysing the last lines of 'dmesg', turning on the debug
> features of the RTAI kernel modules, checking if the API of RTAI 3.5 -> 3.9
> didn't change semantics (ie we check for a return value which was different
> in 3.5 or 3.9)
>
> Another thing you should do in RTT is :
> cd build
> cmake .. -DENABLE_TESTS=ON
> make check
>
> and report on which unit tests work and which don't.
>
> Good luck,
> Peter[/quote]
>
> this is the output of make check :
> [..][100%] Built target typekit_test
> UpdateCTestConfiguration  from
>
> :/home/laboratorio/orocos/orocos-toolchain/rtt/build/tests/DartConfiguration.tcl
> Parse Config
>
> file:/home/laboratorio/orocos/orocos-toolchain/rtt/build/tests/DartConfiguration.tcl
> UpdateCTestConfiguration  from
> :/home/laboratorio/orocos/orocos-toolchain/rtt/build/DartConfiguration.tcl
> Parse Config
>
> file:/home/laboratorio/orocos/orocos-toolchain/rtt/build/DartConfiguration.tcl
> Test project /home/laboratorio/orocos/orocos-toolchain/rtt/build
> Constructing a list of tests
> Done constructing a list of tests
> Checking test dependency graph...
> test 1
>        Start  1: main-test
>
> 1: Test command:
> /home/laboratorio/orocos/orocos-toolchain/rtt/build/tests/main-test
> 1: Test timeout computed to be: 1500
>   1/38 Test  #1: main-test ........................***Exception: SegFault
> 0.07 sec
> test 2
>        Start  2: list-test
>
> 2: Test command:
> /home/laboratorio/orocos/orocos-toolchain/rtt/build/tests/list-test
> 2: Test timeout computed to be: 1500
> 2: Running 2 test cases...
> 2:
> 2: *** No errors detected
>   2/38 Test  #2: list-test ........................***Exception: SegFault
> 0.08 sec
> test 3
>        Start  3: core-test
>
> 3: Test command:
> /home/laboratorio/orocos/orocos-toolchain/rtt/build/tests/core-test
> 3: Test timeout computed to be: 1500
> (the system hangs)


Ok. We first need to solve why main-test did SegFault. I see in the trace
that the kernel got a NULL pointer in the rtai_lxrt module, so that
triggered this case.
You can try to build rtt with this extra option:

cd rtt/build
cmake .. -DOROSEM_OS_LXRT_CHECK=ON
make
cd tests
gdb ./main-test
run
... crash ...
bt

In case this does not work, try to run without gdb too.

Peter

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