[Rtai] BUG: Unhandled exception over domain RTAI at 0x81001c08 - switching to ROOT

joe M joe9mail at gmail.com
Sun Mar 25 22:28:24 CEST 2012


Hello,

This is with vulcano on 2.6.38.8 kernel.

Also attached is the full log file. Is there anything I can do to
bypass the below?

Also, Is it better to use RTAI OWN KTASKS instead of not using them?
This is regarding this "<without RTAI OWN KTASKs>" in the log.

Mar 25 16:15:39 firefox kernel: [   15.503663] NET: Registered
protocol family 10
Mar 25 16:15:40 firefox kernel: [   25.528986] eth0: no IPv6 routers present
Mar 25 16:16:53 firefox kernel: [  138.194569] I-pipe: Domain RTAI registered.
Mar 25 16:16:53 firefox kernel: [  138.194583] RTAI[hal]: <3.9-test2>
mounted over IPIPE-NOTHREADS 2.11-01.
Mar 25 16:16:53 firefox kernel: [  138.194586] RTAI[hal]: compiled
with gcc version 4.5.3 (CRUX) .
Mar 25 16:16:53 firefox kernel: [  138.194590] RTAI[hal]: mounted
(IPIPE-NOTHREADS, IMMEDIATE (INTERNAL IRQs VECTORED), ISOL_CPUS_MASK:
0).
Mar 25 16:16:53 firefox kernel: [  138.194593] PIPELINE layers:
Mar 25 16:16:54 firefox kernel: [  138.194597] e29fd980 9ac15d93 RTAI 2147483647
Mar 25 16:16:54 firefox kernel: [  138.194600] 815c2100 0 Linux 100
Mar 25 16:16:54 firefox kernel: [  138.316823] RTAI[malloc]: global
heap size = 2097152 bytes, <BSD>.
Mar 25 16:16:54 firefox kernel: [  138.316975] RTAI[sched]: loaded
(IMMEDIATE, UP, USER/KERNEL SPACE: <without RTAI OWN KTASKs>, <uses
LINUX SYSCALLs>, kstacks pool size = 524288 bytes.
Mar 25 16:16:54 firefox kernel: [  138.316981] RTAI[sched]: hard timer
type/freq = APIC/24900133(Hz); default timing: periodic; linear timed
lists.
Mar 25 16:16:54 firefox kernel: [  138.316985] RTAI[sched]: Linux
timer freq = 250 (Hz), TimeBase freq = 2191284000 hz.
Mar 25 16:16:54 firefox kernel: [  138.316988] RTAI[sched]: timer
setup = 999 ns, resched latency = 2943 ns.
Mar 25 16:16:55 firefox kernel: [  139.691066] BUG: Unhandled
exception over domain RTAI at 0x81001c08 - switching to ROOT
Mar 25 16:16:55 firefox kernel: [  139.691128] Pid: 600, comm: cut Not
tainted 2.6.38.8-rtai #2
Mar 25 16:16:55 firefox kernel: [  139.691130] Call Trace:
Mar 25 16:16:55 firefox kernel: [  139.691133]  [<81014ec7>] ?
__ipipe_handle_exception+0x237/0x240
Mar 25 16:16:55 firefox kernel: [  139.691135]  [<81001c08>] ?
__switch_to+0x138/0x190
Mar 25 16:16:55 firefox kernel: [  139.691137]  [<81343d2e>] ?
error_code+0x6a/0x78
Mar 25 16:16:55 firefox kernel: [  139.691140]  [<81001c08>] ?
__switch_to+0x138/0x190
Mar 25 16:16:55 firefox kernel: [  139.691142]  [<8102853b>] ?
context_switch+0xeb/0x320
Mar 25 16:16:55 firefox kernel: [  139.691144]  [<811db45c>] ?
trace_hardirqs_on_thunk+0xc/0x10
Mar 25 16:16:55 firefox kernel: [  139.691146]  [<e2afcc6d>] ?
rt_schedule+0x26d/0xae0 [rtai_lxrt]
Mar 25 16:16:55 firefox kernel: [  139.691149]  [<e2b03698>] ?
rt_sleep+0x218/0x240 [rtai_lxrt]
Mar 25 16:16:55 firefox kernel: [  139.691151]  [<e2aff173>] ?
rtai_lxrt_invoke+0x103/0x20f0 [rtai_lxrt]
Mar 25 16:16:55 firefox kernel: [  139.691153]  [<81014890>] ?
__ipipe_ack_irq+0x0/0x10
Mar 25 16:16:55 firefox kernel: [  139.691156]  [<811db45c>] ?
trace_hardirqs_on_thunk+0xc/0x10
Mar 25 16:16:56 firefox kernel: [  139.691158]  [<e2b03580>] ?
rt_sleep+0x100/0x240 [rtai_lxrt]
Mar 25 16:16:56 firefox kernel: [  139.691160]  [<e29fa8f0>] ?
intercept_syscall_prologue+0x0/0xf0 [rtai_hal]
Mar 25 16:16:56 firefox kernel: [  139.691163]  [<e29fa9c6>] ?
intercept_syscall_prologue+0xd6/0xf0 [rtai_hal]
Mar 25 16:16:56 firefox kernel: [  139.691165]  [<8108d68d>] ?
__ipipe_dispatch_event+0x2d/0x1c0
Mar 25 16:16:56 firefox kernel: [  139.691168]  [<810d7833>] ?
do_mlock_pages+0x103/0x120
Mar 25 16:16:56 firefox kernel: [  139.691170]  [<81015127>] ?
__ipipe_syscall_root+0x47/0xe0
Mar 25 16:16:56 firefox kernel: [  139.691172]  [<81002cff>] ?
sysenter_past_esp+0x5c/0x73
Mar 25 16:16:56 firefox kernel: [  139.695362] BUG: Unhandled
exception over domain RTAI at 0x81001c08 - switching to ROOT

Attached is the full message from the log file

Any thoughts, please?

Thanks
Joe
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