Re: [Xenomai-help] [Newbie question]Segmentation fault with user-space binary

[Rodolfo Bamberg <rolfetas@domain.hid>]

I tried to use latency and got this. Am I missing something within the
Kernel? I didn't find an option for TSC. I use the 2.6.20.4 kernel

/usr/bin $ latency
Xenomai: incompatible feature set
(required="sep tsc", present="sep", missing="tsc").



Jan Kiszka wrote:
> Rodolfo Bamberg wrote:
>   
>> Hi
>> I get a segmentation fault when I run my user-space RT app (native skin).
>> I did the following steps:
>> - Cross-Compiled the Kernel with Xenomai support for an i386 target.
>> - I Cross - Compiled Xenomai with uClibc: run ./configure using the
>> --host=i386-linux-uclibc option, and using the new configure.in I read
>> about in the uClibC discussion.
>> - I wrote a test program that includes <native/task.h> and
>> <native/timer.h>.
>> - I then got this segmentation faults and I reduced my program to not
>> using xenomai and only printing something. I igured out that the
>> "-lnative" lib directive in the makefile was causing the problem.
>>     
>
> Looks like the init code of libnative that is executed automatically on
> program start is involved here.
>
>   
>> Do you know what might be the problem??
>>     
>
> Could you attach gdb to your program and check where it segfaults
> precisely? Also, does the same crash happens with "latency", the Xenomai
> benchmark tool based on Native services?
>
>   
>> Thanks!
>>
>> Rodolfo Bamberg
>>
>> Here's my makefile:
>>
>>     obj-m            := hallo.o    rt_process.o
>>     RTAI_INCLUDE_DIR
>>     
>
> That looks like legacy. ;)
>
>   
>> :=/home/rodolfo/kernel/linux-2.6.20-xenomai/include/xenomai
>>     XENOMAI_INCLUDE_DIR_USP
>> :=/home/rodolfo/xenomai/xenomai-2.3.1/src/include
>>     XENOMAI_INCLUDE_DIR_USP2:=/home/rodolfo/xenomai/xenomai-2.3.1/include
>>     XENOMAI_INCLUDE_LIB_USP :=/tftpboot/192.168.0.2/usr/xenomai/lib
>>
>>
>> default:
>>
>>     i386-linux-uclibc-gcc -I$(XENOMAI_INCLUDE_DIR_USP)
>> -I$(XENOMAI_INCLUDE_DIR_USP2) -lnative -L$(XENOMAI_INCLUDE_LIB_USP) -o
>> rt_process_user rt_process_user.c
>>     chmod a+x rt_process_user
>>
>> clean:
>>     rm -f *.mod.c *.o *.ko rt_process
>>
>>
>>     
>
> Jan
>
>