Steven Seeger wrote: > Mark has CONFIG_FRAME_POINTER enabled. We removed the calls to > rt_task_set_mode() and the problems went away. Again, I have no idea why > they are even there. I will blame Mark because it is convenient. >
There must be an issue in rt_task_set_mode() when clearing T_PRIMARY anyway. Will reproduce and fix. > Steven > > On Mar 5, 2009, at 4:55 AM, Philippe Gerum wrote: > >> Mark Saiia wrote: >>> When running 2.6.27.19 w/ Xenomai 2.4.7 on a geode board, I get the >>> following in the log. I haven't done any debugging yet, but wanted to >>> see if anyone else has this issue. It results in some of the >>> application threads not being responsive, while others are still >>> running. >>> >> >> Is CONFIG_FRAME_POINTER enabled for your kernel, i.e. can we trust the >> backtrace >> below? >> >> Additionally, what happens if you stop asking rt_task_set_mode() to clear >> primary mode via toggling the T_PRIMARY flag? (which you should very >> likely NOT >> do, btw. Forcing the current mode is counter-productive most of the >> time; this >> is an internal feature for very, very specific needs of some Xenomai >> library code). >> >>> ar 5 15:08:22 (none) user.err kernel: I-pipe: Detected illicit call >>> from domain 'Xenomai' >>> Mar 5 15:08:22 (none) user.err kernel: into a service >>> reserved for domain 'Linux' and below. >>> Mar 5 15:08:22 (none) user.warn kernel: Pid: 990, comm: main thread >>> Not tainted 2.6.27.19-standard-xenomai #1 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0146d3d>] >>> ipipe_check_context+0x8d/0xb0 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0115535>] >>> sub_preempt_count+0x15/0x80 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0115e1e>] >>> finish_task_switch+0x2e/0x80 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c01172ba>] >>> ipipe_reenter_root+0x1a/0x60 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0155a2d>] >>> xnshadow_relax+0x9d/0x100 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c015e9b7>] >>> __rt_task_set_mode+0x67/0x90 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0155dd7>] >>> losyscall_event+0xb7/0x170 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0155d20>] ? >>> losyscall_event+0x0/0x170 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0148150>] >>> __ipipe_dispatch_event+0xd0/0x220 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c010d54a>] >>> __ipipe_syscall_root+0x3a/0xe0 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c010320b>] >>> system_call+0x2b/0x4c >>> Mar 5 15:08:22 (none) user.warn kernel: ======================= >>> Mar 5 15:08:22 (none) user.warn kernel: ------------[ cut here >>> ]------------ >>> Mar 5 15:08:22 (none) user.warn kernel: WARNING: at >>> kernel/sched.c:4322 sub_preempt_count+0x7d/0x80() >>> Mar 5 15:08:22 (none) user.warn kernel: Modules linked in: ipv6 >>> eepro100 mii genrtc usb_storage nls_iso8859_1 nls_cp437 >>> Mar 5 15:08:22 (none) user.warn kernel: Pid: 990, comm: main thread >>> Not tainted 2.6.27.19-standard-xenomai #1 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c011b746>] >>> warn_on_slowpath+0x46/0x60 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c010320b>] ? >>> system_call+0x2b/0x4c >>> Mar 5 15:08:22 (none) user.warn kernel: [<c011cc71>] ? >>> printk+0x41/0x180 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0103c85>] ? >>> show_trace_log_lvl+0x25/0x30 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0101e5a>] ? >>> __switch_to+0xa/0x150 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0146d42>] ? >>> ipipe_check_context+0x92/0xb0 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0115535>] ? >>> sub_preempt_count+0x15/0x80 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c011559d>] >>> sub_preempt_count+0x7d/0x80 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0115e1e>] >>> finish_task_switch+0x2e/0x80 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c01172ba>] >>> ipipe_reenter_root+0x1a/0x60 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0155a2d>] >>> xnshadow_relax+0x9d/0x100 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0155e08>] >>> losyscall_event+0xe8/0x170 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0155d20>] ? >>> losyscall_event+0x0/0x170 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c0148150>] >>> __ipipe_dispatch_event+0xd0/0x220 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c010d54a>] >>> __ipipe_syscall_root+0x3a/0xe0 >>> Mar 5 15:08:22 (none) user.warn kernel: [<c010320b>] >>> system_call+0x2b/0x4c >>> Mar 5 15:08:22 (none) user.warn kernel: ======================= >>> Mar 5 15:08:22 (none) user.warn kernel: ---[ end trace >>> 37b08dd71b141ea9 ]--- >>> Mar 5 15:08:22 (none) user.emerg rtlogd: : StopScan() >>> >>> Thanks, >>> >>> Mark >>> >>> _______________________________________________ >>> Xenomai-help mailing list >>> [email protected] >>> https://mail.gna.org/listinfo/xenomai-help >>> >> >> >> -- >> Philippe. >> >> _______________________________________________ >> Xenomai-help mailing list >> [email protected] >> https://mail.gna.org/listinfo/xenomai-help > > _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
