Re: Re: [Xenomai-help] Howto catch SEGV signals in Xenomai

["M. Koehrer" <mathias_koehrer@domain.hid>]

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Hi all,

thanks for all the feedback on that issue.
Since yesterday I did a couple of tests on kernel 2.6.19.2
1. I used the adeos patch provided with xenomai-2.3.0 
SMP mode => freeze with my program. I have enclosed the kernel config for this one
UP mode => freeze with my program

2. I added the patch from Philippe (the second one):

--- ksrc/nucleus/pod.c		 (revision 2293)
+++ ksrc/nucleus/pod.c		 (working copy)
@@ -1420,6 +1420,11 @@
 		 		    the KICKED bit set, so that xnshadow_relax() is never
 		 		    prevented from blocking the current thread. */
 		 		 if (xnthread_test_info(thread, XNKICKED)) {
+		 		 		 XENO_ASSERT(NUCLEUS, (mask & XNRELAX) == 0,
+		 		 		 		     xnpod_fatal("Relaxing a kicked thread"
+		 		 		 		 		 		 "(thread=%s, mask=%lx)?!",
+		 		 		 		 		 		 thread->name, mask);
+		 		 		 		 );
 		 		 		 xnthread_clear_info(thread, XNRMID | XNTIMEO);
 		 		 		 xnthread_set_info(thread, XNBREAK);
 		 		 		 goto unlock_and_exit;

I used this patch on the UP kernel 2.6.19.2. Same adeos version as before.
The result  was the same => PC freeze

3. I tried kernel 2.6.20.2 and the same (SMP) configuration as with 2.6.19.2
I used the Xenomai subversion #2292 and the adeos patch that is in subversion
(adeos-ipipe-2.6.20-i386-1.7-02.patch).
And with that combination it is working! I get the expected "Segmentation fault" message.
I don't know why, but it seems to be working!

I will try to use the same Xenomai svn version on the 2.6.19.2 to see if this is a 2.6.19 issue...

Regards

Mathias




-- 
Mathias Koehrer
mathias_koehrer@domain.hid


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