Re: [Xenomai-help] switchtest and Xenomai 2.2.4

[Jan Kiszka <jan.kiszka@domain.hid>]

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Jeff Webb wrote:
> Gilles Chanteperdrix wrote:
>> Jeff Webb wrote:
>>> Gilles Chanteperdrix wrote:
>>>
>>>> After the first Ctrl-C that does not work, could you try and attach gdb
>>>> to see where the threads are stopped ?
>>>
>>>
>>> I tried to do this, but was unable to determine the stopping point
>>> using gdb.
>>
>> type simply: "info threads"
>> then change thread to the main thread with "thread x", where x is the
>> lowest thread id as listed by "info threads"
>> then type: "backtrace"
> 
> If I try to connect to the process after I press the ctrl-c one time, I
> get:
> 
> # gdb --pid=2660
> Attaching to process 2660
> warning: The current VSYSCALL page code requires an existing excuitable.
> [sic]

Then why not trying to provide it?

# gdb switchtest
(gdb) r

> Use "add-symbol-file-from-memory" to load the VSYSCALL page by hand
> 
> Then the whole machine locks up, and I am forced to reboot.

That's bad. Is the Xenomai watchdog active (if not, this might be some
RT thread running wild)?

Jan


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