From: Jeff Webb <jeff.webb@domain.hid>
To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] switchtest and Xenomai 2.2.4
Date: Thu, 26 Oct 2006 11:44:24 -0500 [thread overview]
Message-ID: <4540E5E8.9010608@domain.hid> (raw)
In-Reply-To: <4540DACA.2050406@domain.hid>
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]
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.
I am able to connect before I press ctrl-c:
(gdb) thread 1
[Switching to thread 1 (Thread -1208273216 (LWP 2634))]#0 0xffffe410 in ?? ()
(gdb) backtrace
#0 0xffffe410 in ?? ()
#1 0xbfd96294 in ?? ()
#2 0x00000000 in ?? ()
(gdb) c
Continuing.
Then I type ctrl-c, and the machine locks up, as before. The machine does not lock up, if I am not connected via gdb.
> /proc/xenomai/sched gives an information on the status that is easier to
> understand.
Before pressing ctrl-c:
$ cat /proc/xenomai/sched
CPU PID PRI PERIOD TIMEOUT STAT NAME
0 0 -1 0 0 R ROOT/0
1 0 -1 0 0 R ROOT/1
0 2641 0 0 0 X switchtest
0 0 1 0 0 W rtk1/0
0 0 1 0 0 W rtk2/0
0 0 1 0 0 Wf rtk3/0
0 0 1 0 0 Wf rtk4/0
0 0 1 0 0 Wf rtk5/0
0 0 1 0 0 Wf rtk6/0
0 2643 1 0 0 X rtup0-7
0 2644 1 0 0 X rtup0-8
0 2645 1 0 0 X rtup_ufpp0-9
0 2646 1 0 0 X rtup_ufpp0-10
0 2647 1 0 0 W rtus0-11
0 2648 1 0 0 W rtus0-12
0 2649 1 0 0 W rtus_ufps0-13
0 2650 1 0 0 W rtus_ufps0-14
0 2651 1 0 0 X rtuo0-15
0 2652 1 0 0 X rtuo0-16
0 2653 1 0 0 X rtuo_ufpp0-17
0 2654 1 0 0 X rtuo_ufpp0-18
0 2655 1 0 0 X rtuo_ufps0-19
0 2656 1 0 0 X rtuo_ufps0-20
0 2657 1 0 0 X rtuo_ufpp_ufps0-21
0 2658 1 0 0 X rtuo_ufpp_ufps0-22
1 0 1 0 0 W rtk1/1
1 0 1 0 0 W rtk2/1
1 0 1 0 0 Wf rtk3/1
1 0 1 0 0 Wf rtk4/1
1 0 1 0 0 Wf rtk5/1
1 0 1 0 0 Wf rtk6/1
1 2660 1 0 0 X rtup1-7
1 2661 1 0 0 X rtup1-8
1 2662 1 0 0 X rtup_ufpp1-9
1 2663 1 0 0 X rtup_ufpp1-10
1 2664 1 0 0 W rtus1-11
1 2665 1 0 0 W rtus1-12
1 2666 1 0 0 W rtus_ufps1-13
1 2667 1 0 0 W rtus_ufps1-14
1 2668 1 0 0 W rtuo1-15
1 2669 1 0 0 W rtuo1-16
1 2670 1 0 0 W rtuo_ufpp1-17
1 2671 1 0 0 W rtuo_ufpp1-18
1 2672 1 0 0 W rtuo_ufps1-19
1 2673 1 0 0 W rtuo_ufps1-20
1 2674 1 0 0 W rtuo_ufpp_ufps1-21
1 2675 1 0 0 W rtuo_ufpp_ufps1-22
After pressing ctrl-c once:
$ cat /proc/xenomai/sched
CPU PID PRI PERIOD TIMEOUT STAT NAME
0 0 -1 0 0 R ROOT/0
1 0 -1 0 0 R ROOT/1
0 2641 0 0 0 X switchtest
0 0 1 0 0 W rtk1/0
0 0 1 0 0 W rtk2/0
0 0 1 0 0 Wf rtk3/0
0 0 1 0 0 Wf rtk4/0
0 0 1 0 0 Wf rtk5/0
0 0 1 0 0 Wf rtk6/0
0 2647 1 0 0 R rtus0-11
0 2648 1 0 0 R rtus0-12
0 2649 1 0 0 R rtus_ufps0-13
0 2650 1 0 0 R rtus_ufps0-14
0 2651 1 0 0 R rtuo0-15
0 2652 1 0 0 R rtuo0-16
0 2653 1 0 0 R rtuo_ufpp0-17
0 2654 1 0 0 R rtuo_ufpp0-18
0 2655 1 0 0 R rtuo_ufps0-19
0 2656 1 0 0 R rtuo_ufps0-20
0 2657 1 0 0 R rtuo_ufpp_ufps0-21
0 2658 1 0 0 R rtuo_ufpp_ufps0-22
1 0 1 0 0 W rtk1/1
1 0 1 0 0 W rtk2/1
1 0 1 0 0 Wf rtk3/1
1 0 1 0 0 Wf rtk4/1
1 0 1 0 0 Wf rtk5/1
1 0 1 0 0 Wf rtk6/1
1 2660 1 0 0 X rtup1-7
1 2661 1 0 0 X rtup1-8
1 2662 1 0 0 X rtup_ufpp1-9
1 2663 1 0 0 X rtup_ufpp1-10
1 2664 1 0 0 W rtus1-11
1 2665 1 0 0 W rtus1-12
1 2666 1 0 0 W rtus_ufps1-13
1 2667 1 0 0 W rtus_ufps1-14
1 2668 1 0 0 X rtuo1-15
1 2669 1 0 0 X rtuo1-16
1 2670 1 0 0 X rtuo_ufpp1-17
1 2671 1 0 0 X rtuo_ufpp1-18
1 2672 1 0 0 X rtuo_ufps1-19
1 2673 1 0 0 X rtuo_ufps1-20
1 2674 1 0 0 X rtuo_ufpp_ufps1-21
1 2675 1 0 0 X rtuo_ufpp_ufps1-22
After pressing ctrl-c twice:
webb-ja@domain.hid:~$ cat /proc/xenomai/sched
CPU PID PRI PERIOD TIMEOUT STAT NAME
0 0 -1 0 0 R ROOT/0
1 0 -1 0 0 R ROOT/1
0 0 1 0 0 W rtk1/0
0 0 1 0 0 W rtk2/0
0 0 1 0 0 Wf rtk3/0
0 0 1 0 0 Wf rtk4/0
0 0 1 0 0 Wf rtk5/0
0 0 1 0 0 Wf rtk6/0
1 0 1 0 0 W rtk1/1
1 0 1 0 0 W rtk2/1
1 0 1 0 0 Wf rtk3/1
1 0 1 0 0 Wf rtk4/1
1 0 1 0 0 Wf rtk5/1
1 0 1 0 0 Wf rtk6/1
1 2665 1 0 0 R rtus1-12
1 2666 1 0 0 R rtus_ufps1-13
1 2667 1 0 0 R rtus_ufps1-14
next prev parent reply other threads:[~2006-10-26 16:44 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-15 21:32 [Xenomai-core] Xenomai v2.2.4 Philippe Gerum
2006-10-25 20:10 ` [Xenomai-help] switchtest and Xenomai 2.2.4 Jeff Webb
2006-10-25 23:43 ` Jeff Webb
2006-10-26 8:21 ` Gilles Chanteperdrix
2006-10-26 15:51 ` Jeff Webb
2006-10-26 15:56 ` Gilles Chanteperdrix
2006-10-26 16:44 ` Jeff Webb [this message]
2006-10-26 16:55 ` Jan Kiszka
2006-10-26 18:53 ` Jeff Webb
2006-10-26 7:35 ` Gilles Chanteperdrix
[not found] ` <454078AD.5000907@domain.hid>
[not found] ` <4540DE60.40209@domain.hid>
[not found] ` <4540E1AB.2040200@domain.hid>
[not found] ` <4540EABD.10403@domain.hid>
[not found] ` <4540ECA6.5000604@domain.hid>
2006-10-26 19:49 ` Jeff Webb
2006-10-27 8:18 ` Gilles Chanteperdrix
2006-10-27 14:45 ` Jeff Webb
2006-10-27 15:05 ` Gilles Chanteperdrix
2006-10-27 16:25 ` Jeff Webb
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