[Xenomai-help] SegFault on all demo apps!!

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* [Xenomai-help] SegFault on all demo apps!!
@ 2008-11-08 16:03 Cristian Axenie
  2008-11-08 17:41 ` Gilles Chanteperdrix
  2008-11-09 10:33 ` Philippe Gerum
  0 siblings, 2 replies; 4+ messages in thread
From: Cristian Axenie @ 2008-11-08 16:03 UTC (permalink / raw)
  To: xenomai

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Hello!
I've installed Xenomai for a 2.6.24 linux kernel, for a PPC development
board. My intentions are to use a NI DAQ card for a distributed control
application using RTAI skin + Comedi. So I experience some trouble after
installing Xenomai and even running specific latency , switchtest...etc or
even cmd_read, cmd_write apps because I get a Segmentation Fault each time.
So during my kernel booting i get :

I-pipe: Domain Xenomai registered.
Xenomai: hal/powerpc started.
I-pipe: Domain IShield registered.
Xenomai: real-time nucleus v2.5-devel (Flying In A Blue Dream) loaded.
Xenomai: starting native API services.
Xenomai: starting POSIX services.
Xenomai: starting RTDM services.
Xenomai: starting RTAI emulator.

So  I think it's ok, but I,ve copied my generated xenomai dir (including :
bin include lib sbin share) and dev directory in my filesystem located on a
SATA hard-drive conected to my board. Am I missing something in the
installation steps ? Here are the main staps used for the installation :

/home/haustiq/development/xenomai-comedi-trunk/scripts/prepare-kernel.sh
--arch=powerpc \

--adeos=/home/haustiq/development/xenomai-comedi-trunk/ksrc/arch/powerpc/patches/adeos-ipipe-2.6.24-powerpc-DENX-2.1-04.patch
\
  --linux=/home/haustiq/development/eldk/ppc_6xx/usr/src/linux-2.6.24

cd /home/haustiq/development/eldk/ppc_6xx/usr/src/linux-2.6.24

mkdir staging_dir build_root

make ARCH=powerpc CROSS_COMPILE=ppc_6xx- O=build_root menuconfig

  make ARCH=powerpc CROSS_COMPILE=ppc_6xx- O=build_root uImage modules

  cd build_root

  /home/haustiq/development/xenomai-comedi-trunk/configure
--prefix=/home/haustiq/development/eldk/ppc_6xx/usr/src/linux-2.6.24/staging_dir
--build=i686-pc-linux-gnu --host=ppc-unknown-linux-gnu CC=ppc_6xx-gcc
CXX=ppc_6xx-g++ LD=ppc_6xx-ld

  make ARCH=powerpc CROSS_COMPILE=ppc_6xx-
DESTDIR=/home/haustiq/development/eldk/ppc_6xx/usr/src/linux-2.6.24/staging_dir
install

In staging_dir I have my genrated xenomai and dev folders copied in my FS .

So when runnig for example strace ./latency on my target I get :

/usr/xenomai/bin # strace ./latency
execve("./latency", ["./latency"], [/* 8 vars */]) = 0
brk(0)                                  = 0x10045000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or
directory)
open("/usr/xenomai/lib/tls/ppc603/libnative.so.3", O_RDONLY) = -1 ENOENT (No
such file or directory)
stat64("/usr/xenomai/lib/tls/ppc603", 0xbff80268) = -1 ENOENT (No such file
or directory)
open("/usr/xenomai/lib/tls/libnative.so.3", O_RDONLY) = -1 ENOENT (No such
file or directory)
stat64("/usr/xenomai/lib/tls", 0xbff80268) = -1 ENOENT (No such file or
directory)
open("/usr/xenomai/lib/ppc603/libnative.so.3", O_RDONLY) = -1 ENOENT (No
such file or directory)
stat64("/usr/xenomai/lib/ppc603", 0xbff80268) = -1 ENOENT (No such file or
directory)
open("/usr/xenomai/lib/libnative.so.3", O_RDONLY) = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\000"..., 512) =
512
fstat64(3, {st_mode=S_IFREG|0755, st_size=60116, ...}) = 0
mmap(0xffa7000, 298328, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0xffa7000
mprotect(0xffb0000, 258048, PROT_NONE)  = 0
mmap(0xffef000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8000) = 0xffef000
close(3)                                = 0
open("/usr/xenomai/lib/librtdm.so.1", O_RDONLY) = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\0\30"..., 512) =
512
fstat64(3, {st_mode=S_IFREG|0755, st_size=18181, ...}) = 0
mmap(0xff54000, 272960, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0xff54000
mprotect(0xff57000, 258048, PROT_NONE)  = 0
mmap(0xff96000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0xff96000
close(3)                                = 0
open("/usr/xenomai/lib/libpthread.so.0", O_RDONLY) = -1 ENOENT (No such file
or directory)
open("/etc/ld.so.cache", O_RDONLY)      = -1 ENOENT (No such file or
directory)
open("/lib/tls/ppc603/libpthread.so.0", O_RDONLY) = -1 ENOENT (No such file
or directory)
stat64("/lib/tls/ppc603", 0xbff80228)   = -1 ENOENT (No such file or
directory)
open("/lib/tls/libpthread.so.0", O_RDONLY) = -1 ENOENT (No such file or
directory)
stat64("/lib/tls", 0xbff80228)          = -1 ENOENT (No such file or
directory)
open("/lib/ppc603/libpthread.so.0", O_RDONLY) = -1 ENOENT (No such file or
directory)
stat64("/lib/ppc603", 0xbff80228)       = -1 ENOENT (No such file or
directory)
open("/lib/libpthread.so.0", O_RDONLY)  = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\0M\330"..., 512)
= 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=130162, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x4801f000
mmap(0xfeec000, 358004, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0xfeec000
mprotect(0xff00000, 262144, PROT_NONE)  = 0
mmap(0xff40000, 8192, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x14000) = 0xff40000
mmap(0xff42000, 5748, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xff42000
close(3)                                = 0
open("/usr/xenomai/lib/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)
open("/lib/libm.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\0\337"..., 512)
= 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=735452, ...}) = 0
mmap(0xfe25000, 747536, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0xfe25000
mprotect(0xfec8000, 61440, PROT_NONE)   = 0
mmap(0xfed7000, 20480, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa2000) = 0xfed7000
close(3)                                = 0
open("/usr/xenomai/lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\1\361"..., 512)
= 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1537981, ...}) = 0
mmap(0xfcc0000, 1394728, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0xfcc0000
mprotect(0xfdfd000, 65536, PROT_NONE)   = 0
mmap(0xfe0d000, 20480, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13d000) = 0xfe0d000
mmap(0xfe12000, 10280, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xfe12000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x48020000
mprotect(0xfe0d000, 8192, PROT_READ)    = 0
mprotect(0xfed7000, 4096, PROT_READ)    = 0
mprotect(0xff40000, 4096, PROT_READ)    = 0
mprotect(0x4802e000, 4096, PROT_READ)   = 0
set_tid_address(0x48020068)             = 910
get_robust_list(0x48020070, 0xc, 0xbff80e6c) = 0
rt_sigaction(SIGRTMIN, {0xfef09f8, [], SA_SIGINFO}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0xfef08f8, [], SA_RESTART|SA_SIGINFO}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++
Process 910 detached


and for a COMEDI example

/usr/xenomai/bin # strace ./cmd_write
execve("./cmd_write", ["./cmd_write"], [/* 8 vars */]) = 0
brk(0)                                  = 0x10046000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or
directory)
open("/usr/xenomai/lib/tls/ppc603/libcomedi.so.0", O_RDONLY) = -1 ENOENT (No
such file or directory)
stat64("/usr/xenomai/lib/tls/ppc603", 0xbf838268) = -1 ENOENT (No such file
or directory)
open("/usr/xenomai/lib/tls/libcomedi.so.0", O_RDONLY) = -1 ENOENT (No such
file or directory)
stat64("/usr/xenomai/lib/tls", 0xbf838268) = -1 ENOENT (No such file or
directory)
open("/usr/xenomai/lib/ppc603/libcomedi.so.0", O_RDONLY) = -1 ENOENT (No
such file or directory)
stat64("/usr/xenomai/lib/ppc603", 0xbf838268) = -1 ENOENT (No such file or
directory)
open("/usr/xenomai/lib/libcomedi.so.0", O_RDONLY) = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\0\34"..., 512) =
512
fstat64(3, {st_mode=S_IFREG|0755, st_size=25622, ...}) = 0
mmap(0xffac000, 276948, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0xffac000
mprotect(0xffb0000, 258048, PROT_NONE)  = 0
mmap(0xffef000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0xffef000
close(3)                                = 0
open("/usr/xenomai/lib/libnative.so.3", O_RDONLY) = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\000"..., 512) =
512
fstat64(3, {st_mode=S_IFREG|0755, st_size=60116, ...}) = 0
mmap(0xff53000, 298328, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0xff53000
mprotect(0xff5c000, 258048, PROT_NONE)  = 0
mmap(0xff9b000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8000) = 0xff9b000
close(3)                                = 0
open("/usr/xenomai/lib/librtdm.so.1", O_RDONLY) = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\0\30"..., 512) =
512
fstat64(3, {st_mode=S_IFREG|0755, st_size=18181, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x4801f000
mmap(0xff00000, 272960, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0xff00000
mprotect(0xff03000, 258048, PROT_NONE)  = 0
mmap(0xff42000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0xff42000
close(3)                                = 0
open("/usr/xenomai/lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY)      = -1 ENOENT (No such file or
directory)
open("/lib/tls/ppc603/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)
stat64("/lib/tls/ppc603", 0xbf838208)   = -1 ENOENT (No such file or
directory)
open("/lib/tls/libc.so.6", O_RDONLY)    = -1 ENOENT (No such file or
directory)
stat64("/lib/tls", 0xbf838208)          = -1 ENOENT (No such file or
directory)
open("/lib/ppc603/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)
stat64("/lib/ppc603", 0xbf838208)       = -1 ENOENT (No such file or
directory)
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\1\361"..., 512)
= 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1537981, ...}) = 0
mmap(0xfd9b000, 1394728, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0xfd9b000
mprotect(0xfed8000, 65536, PROT_NONE)   = 0
mmap(0xfee8000, 20480, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13d000) = 0xfee8000
mmap(0xfeed000, 10280, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xfeed000
close(3)                                = 0
open("/usr/xenomai/lib/libpthread.so.0", O_RDONLY) = -1 ENOENT (No such file
or directory)
open("/lib/libpthread.so.0", O_RDONLY)  = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\0M\330"..., 512)
= 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=130162, ...}) = 0
mmap(0xfd33000, 358004, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0xfd33000
mprotect(0xfd47000, 262144, PROT_NONE)  = 0
mmap(0xfd87000, 8192, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x14000) = 0xfd87000
mmap(0xfd89000, 5748, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xfd89000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x48020000
mprotect(0xfd87000, 4096, PROT_READ)    = 0
mprotect(0xfee8000, 8192, PROT_READ)    = 0
mprotect(0x4802e000, 4096, PROT_READ)   = 0
set_tid_address(0x48020008)             = 913
get_robust_list(0x48020010, 0xc, 0xbf838e6c) = 0
rt_sigaction(SIGRTMIN, {0xfd379f8, [], SA_SIGINFO}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0xfd378f8, [], SA_RESTART|SA_SIGINFO}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++
Process 913 detached


WHAT AM I MISSING, I SEE PLENTY OF No such file or directory !! WHERE SHOULD
I FOUND THOSE MISSING FILES, SIMLINKS....


THANKS IN ADVANCE !

BEST ,
Cristian

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^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [Xenomai-help] SegFault on all demo apps!!
  2008-11-08 16:03 [Xenomai-help] SegFault on all demo apps!! Cristian Axenie
@ 2008-11-08 17:41 ` Gilles Chanteperdrix
  2008-11-09 10:33 ` Philippe Gerum
  1 sibling, 0 replies; 4+ messages in thread
From: Gilles Chanteperdrix @ 2008-11-08 17:41 UTC (permalink / raw)
  To: Cristian Axenie; +Cc: xenomai

Cristian Axenie wrote:
> WHAT AM I MISSING, I SEE PLENTY OF No such file or directory !! WHERE SHOULD
> I FOUND THOSE MISSING FILES, SIMLINKS....

No need to shout, we hear you.

The error you are seeing are errors that comes from ld.so looking for
libs at various places before actually finding them. This is normal, and
certainly not what causes segmentation faults.

What could cause segmentation faults is the fact that the kernel you are
running would not really be patched with Xenomai. To know this, try
cat /proc/xenomai/version
on your board. If there is no such file, then you are not running Xenomai.

Another cause of problems could be that you enabled a problematic option.

In fact, to know really where the fault happens, you should be using
gdb, not strace.

-- 
					    Gilles.

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [Xenomai-help] SegFault on all demo apps!!
  2008-11-08 16:03 [Xenomai-help] SegFault on all demo apps!! Cristian Axenie
  2008-11-08 17:41 ` Gilles Chanteperdrix
@ 2008-11-09 10:33 ` Philippe Gerum
       [not found]   ` <9c789a000811090446l5d172120mc6791c220373b118@domain.hid>
  1 sibling, 1 reply; 4+ messages in thread
From: Philippe Gerum @ 2008-11-09 10:33 UTC (permalink / raw)
  To: Cristian Axenie; +Cc: xenomai

Cristian Axenie wrote:
> Hello!
> I've installed Xenomai for a 2.6.24 linux kernel, for a PPC development
> board.

- Which board?
- Which ELDK version?
- Did you patch against DENX-v2.6.24-stable?

 My intentions are to use a NI DAQ card for a distributed control
> application using RTAI skin + Comedi. So I experience some trouble after
> installing Xenomai and even running specific latency , switchtest...etc
> or even cmd_read, cmd_write apps because I get a Segmentation Fault each
> time.
> So during my kernel booting i get :
> 
> I-pipe: Domain Xenomai registered.
> Xenomai: hal/powerpc started.
> I-pipe: Domain IShield registered.

Get rid of CONFIG_XENO_OPT_ISHIELD. Your configuration doesn't need that.

> Xenomai: real-time nucleus v2.5-devel (Flying In A Blue Dream) loaded.
> Xenomai: starting native API services.
> Xenomai: starting POSIX services.
> Xenomai: starting RTDM services.
> Xenomai: starting RTAI emulator.
> 
> So  I think it's ok, but I,ve copied my generated xenomai dir (including
> : bin include lib sbin share) and dev directory in my filesystem located
> on a SATA hard-drive conected to my board. Am I missing something in the
> installation steps ? Here are the main staps used for the installation :
> 
> /home/haustiq/development/xenomai-comedi-trunk/scripts/prepare-kernel.sh
> --arch=powerpc \
>  
> --adeos=/home/haustiq/development/xenomai-comedi-trunk/ksrc/arch/powerpc/patches/adeos-ipipe-2.6.24-powerpc-DENX-2.1-04.patch
> \
>   --linux=/home/haustiq/development/eldk/ppc_6xx/usr/src/linux-2.6.24
> 
> cd /home/haustiq/development/eldk/ppc_6xx/usr/src/linux-2.6.24
> 
> mkdir staging_dir build_root
> 
> make ARCH=powerpc CROSS_COMPILE=ppc_6xx- O=build_root menuconfig
>  
>   make ARCH=powerpc CROSS_COMPILE=ppc_6xx- O=build_root uImage modules
>  
>   cd build_root
>  
>   /home/haustiq/development/xenomai-comedi-trunk/configure
> --prefix=/home/haustiq/development/eldk/ppc_6xx/usr/src/linux-2.6.24/staging_dir 
> --build=i686-pc-linux-gnu --host=ppc-unknown-linux-gnu CC=ppc_6xx-gcc
> CXX=ppc_6xx-g++ LD=ppc_6xx-ld
>  
>   make ARCH=powerpc CROSS_COMPILE=ppc_6xx-
> DESTDIR=/home/haustiq/development/eldk/ppc_6xx/usr/src/linux-2.6.24/staging_dir
> install
> 

The prefix is wrong:

--prefix should define the path to the Xenomai install dir as seen by the
_target_ board when running.

DESTDIR should define the path to the Xenomai install dir as seen by the build
_host_when installing.

> In staging_dir I have my genrated xenomai and dev folders copied in my FS .
> 
> So when runnig for example strace ./latency on my target I get :
> 
> /usr/xenomai/bin # strace ./latency
> execve("./latency", ["./latency"], [/* 8 vars */]) = 0
> brk(0)                                  = 0x10045000
> access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or

[...]

> directory)

> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> +++ killed by SIGSEGV +++
> Process 910 detached
>

- Why don't you use GDB to know precisely where the application dies?
- Try downgrading to Xenomai 2.4.5 for running the latency tests. You don't need
Comedi to validate your board setup anyway. If that does not work either, then
this is likely a setup issue (e.g. pthread/tls support).

> 
> WHAT AM I MISSING, I SEE PLENTY OF No such file or directory !! WHERE
> SHOULD I FOUND THOSE MISSING FILES, SIMLINKS....

- "No such file or directory" errors are not the problem.
- Do not shout, we recently learnt how to decipher lowercases.

-- 
Philippe.


^ permalink raw reply	[flat|nested] 4+ messages in thread

[parent not found: <9c789a000811090446l5d172120mc6791c220373b118@domain.hid>]

[parent not found: <49171204.705@domain.hid>]

[parent not found: <9c789a000811100152m68bf3cc5o74df47c2e5066df0@domain.hid>]

* Re: [Xenomai-help] SegFault on all demo apps!!
       [not found]       ` <9c789a000811100152m68bf3cc5o74df47c2e5066df0@domain.hid>
@ 2008-11-10 14:12         ` Philippe Gerum
  0 siblings, 0 replies; 4+ messages in thread
From: Philippe Gerum @ 2008-11-10 14:12 UTC (permalink / raw)
  To: Cristian Axenie; +Cc: xenomai-help

Cristian Axenie wrote:
> 
> 
> 
> 
>     I understand that. The point is that you don't need Comedi for
>     validating the
>     environment, since you are stuck in the very early stages it seems.
>     What you
>     need is to get the plain latency test running, first of all. Therefore,
>     downgrading to 2.4.5 for the purpose of testing is the way to
>     determine whether
>     this is a Xenomai trunk/ vs stable/ issue, or a bad interaction
>     between any
>     Xenomai version and the standard libraries used on your board.
> 
>  
> I tested the demo apps on the kernel-2.6.24 and Xenomai 2.4.5 and I get
> the same results .
> So is it possible to be an incompatibility between the standard libs
> (glibc..) on the target and the standard libs from the host where I
> build my kernel and installed Xenomai ?
> Would be a good solution to create a new filesystem using the same
> libraries (on the host), should this approach eliminate the possibility
> of incompatibility that generates the SegFault?
>

Normally, you should be using the same libs on both sides, either for linking
your apps or running your target. The cross-compiler will use the proper target
libs to link your app against as available with the same ELDK it is part of, and
I assume you booted your target over the ELDK root fs suitable for your arch as
well. If this is not the case, e.g. if you have populated your target root fs
with your own recipe using buildroot or other means, then you may have
introduced the issue.

First of all, I would try booting the board on the NFS-mounted root fs the ELDK
provides for your arch, and run the Xenomai testsuite from there.

Please keep the list CCed; this conversation may help other people.

> 
> Best,
> 
> Cristian
> 
> 
> 

-- 
Philippe.

^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2008-11-10 14:12 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2008-11-08 16:03 [Xenomai-help] SegFault on all demo apps!! Cristian Axenie
2008-11-08 17:41 ` Gilles Chanteperdrix
2008-11-09 10:33 ` Philippe Gerum
     [not found]   ` <9c789a000811090446l5d172120mc6791c220373b118@domain.hid>
     [not found]     ` <49171204.705@domain.hid>
     [not found]       ` <9c789a000811100152m68bf3cc5o74df47c2e5066df0@domain.hid>
2008-11-10 14:12         ` Philippe Gerum

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