Jan Kiszka wrote:
>
> Please post the oops. Also include the Adeos patch version you are using
> for this.
>
> Jan
>
Hi Jan
Eventually I found the call that is responsible for the mess. It's
basically not in the rt_e1000 driver when loaded, but the ioctl sent by
rtifconfig (ifonfig of RTnet) when trying to activate the NIC. I enabled
i-pipe debugging in the kernel and got the following. I also posted the
trace to the RTAI list, but maybe you've seen something similar before?
Bernhard
Adeos is RTAI's hal-linux-2.6.26-x86-2.0-09.patch
I-pipe: Domain RTAI registered.
RTAI[hal]: <magma> mounted over IPIPE-NOTHREADS 2.0-09.
RTAI[hal]: compiled with gcc version 4.2.3 (Ubuntu 4.2.3-2ubuntu7).
RTAI[hal]: mounted (IPIPE-NOTHREADS, IMMEDIATE (INTERNAL IRQs VECTORED),
ISOL_CPUS_MASK: e).
PIPELINE layers:
f8936600 9ac15d93 RTAI 200
c0737540 0 Linux 100
RTAI[malloc]: global heap size = 4194304 bytes, <BSD>.
RTAI[sched]: IMMEDIATE, MP, USER/KERNEL SPACE: <with RTAI OWN KTASKs>,
kstacks pool size = 1048576 bytes.
RTAI[sched]: hard timer type/freq = APIC/16666663(Hz); default timing:
periodic; linear timed lists.
RTAI[sched]: Linux timer freq = 1000 (Hz), CPU freq = 2400046000 hz.
RTAI[sched]: timer setup = 999 ns, resched latency = 0 ns.
RTAI[usi]: enabled.
RTAI[rtai_msgq]: loaded.
RTAI[mq]: loaded.
RTDM started.
*** RTnet 0.9.11 - built on Aug 13 2008 22:31:19 ***
RTnet: initialising real-time networking
Intel(R) PRO/1000 Network Driver - version 7.1.9
Copyright (c) 1999-2006 Intel Corporation.
ACPI: PCI Interrupt Link [APC8] enabled at IRQ 16
ACPI: PCI Interrupt 0000:03:00.0[A] -> Link [APC8] -> GSI 16 (level,
low) -> IRQ 16
PCI: Setting latency timer of device 0000:03:00.0 to 64
e1000: 0000:03:00.0: e1000_probe: (PCI Express:2.5Gb/s:Width x1)
00:1b:21:1e:56:64
RTnet: registered rteth0
e1000: rteth0: e1000_probe: Intel(R) PRO/1000 Network Connection
I-pipe: Detected illicit call from domain 'RTAI'
into a service reserved for domain 'Linux' and below.
Pid: 0, comm: swapper Not tainted 2.6.26.2-FuCS #3
[<c0156866>] ipipe_check_context+0xd6/0xf0
[<c03e202e>] <6>e1000: rteth0: e1000_watchdog: NIC Link is Up 1000 Mbps
Full Duplex
_spin_lock_irqsave+0x1e/0x80
[<c024a7a6>] pci_bus_read_config_word+0x36/0x80
[<c024c29e>] __pci_bus_find_cap_start+0x1e/0x50
[<c024c7f4>] pci_find_capability+0x24/0x50
[<c0254132>] msi_set_enable+0x22/0x80
[<c01176f3>] ? mcount+0x1f/0x23
[<c025444f>] msi_set_mask_bits+0xcf/0xe0
[<c01176f3>] ? mcount+0x1f/0x23
[<c02546f7>] unmask_msi_irq+0x17/0x30
[<c01542da>] default_enable+0x1a/0x30
[<f892f1ee>] rt_enable_irq+0xe/0x10 [rtai_hal]
[<f8dabd99>] ? xnintr_irq_handler+0x149/0x1f0 [rtai_rtdm]
[<f893164b>] rtai_hirq_dispatcher+0xfb/0x430 [rtai_hal]
[<c01021c5>] default_idle+0x45/0x60
[<c0102180>] default_idle+0x0/0x60
[<c0103cc7>] common_interrupt+0x2f/0x54
[<c0102180>] default_idle+0x0/0x60
[<c01500d8>] cgroup_file_write+0x118/0x140
[<c01021c5>] default_idle+0x45/0x60
[<c0101b76>] cpu_idle+0x86/0x140
[<c03dd7bd>] start_secondary+0x16d/0x210
[<c03d3a48>] initialize_secondary+0x8/0x20
=======================
I-pipe tracer log (100 points):
| +*func 0 ipipe_trace_panic_freeze+0x9
(ipipe_check_context+0x94)
| +*func 0 find_next_bit+0xa (__next_cpu+0x1a)
| +*func 0 __next_cpu+0x9 (ipipe_check_context+0x88)
| +*func 0 find_next_bit+0xa (__next_cpu+0x1a)
| +*func 0 __next_cpu+0x9 (ipipe_check_context+0x88)
| +*func 0 find_next_bit+0xa (__next_cpu+0x1a)
| +*func 0 __next_cpu+0x9 (ipipe_check_context+0x88)
| +*func 0 find_next_bit+0xa (__next_cpu+0x1a)
| +*func 0 __next_cpu+0x9 (ipipe_check_context+0x88)
| +*func 0 find_first_bit+0xa (__first_cpu+0x12)
| +*func -1 __first_cpu+0x8 (ipipe_check_context+0x66)
| +*func -1 ipipe_check_context+0x14
(_spin_lock_irqsave+0x1e)
| +*func -1 _spin_lock_irqsave+0x12
(pci_bus_read_config_word+0x36)
| +*func -1 pci_bus_read_config_word+0x14
(__pci_bus_find_cap_start+0x1e)
| +*func -1 __pci_bus_find_cap_start+0xc
(pci_find_capability+0x24)
| +*func -1 pci_find_capability+0x11
(msi_set_enable+0x22)
| +*func -1 msi_set_enable+0x14 (msi_set_mask_bits+0xcf)
| +*func -1 msi_set_mask_bits+0xe (unmask_msi_irq+0x17)
| +*func -1 unmask_msi_irq+0x9 (default_enable+0x1a)
| +*func -2 default_enable+0x9 (rt_enable_irq+0xe
[rtai_hal])
| +*func -2 alloc_rtskb+0x14 [rtnet]
(e1000_alloc_rx_buffers+0x147 [rt_e1000])
| +*func -2 e1000_alloc_rx_buffers+0xe [rt_e1000]
(e1000_intr+0x37d [rt_e1000])
| +*func -5 e1000_intr+0x11 [rt_e1000]
(xnintr_irq_handler+0x9e [rtai_rtdm])
| +*func -5 xnintr_irq_handler+0xe [rtai_rtdm]
(rtai_hirq_dispatcher+0xfb [rtai_hal])
| +*func -5 ack_ioapic_irq+0x8
(__ipipe_ack_edge_irq+0xe)
| +*func -6 __ipipe_ack_edge_irq+0x8
(__ipipe_ack_irq+0x19)
| +*func -6 __ipipe_ack_irq+0x8
(rtai_hirq_dispatcher+0x66 [rtai_hal])
| +begin 0xffffff23 -6 common_interrupt+0x29 (default_idle+0x45)
+end 0x8000000e -600 default_idle+0x43 (cpu_idle+0x86)
+func -600 default_idle+0x8 (cpu_idle+0x86)
| +end 0x80000001 -600 ipipe_suspend_domain+0xd7 (cpu_idle+0x84)
| #begin 0x80000001 -600 ipipe_suspend_domain+0xee (cpu_idle+0x84)
#func -600 ipipe_suspend_domain+0xe (cpu_idle+0x84)
+func -601 ipipe_check_context+0x14 (cpu_idle+0x5b)
+func -601 ipipe_check_context+0x14
(_spin_unlock_irqrestore+0x23)
| +end 0x80000000 -601 __ipipe_unstall_root+0x4a
(__ipipe_restore_root+0x27)
| #begin 0x80000000 -601 __ipipe_unstall_root+0x5b
(__ipipe_restore_root+0x27)
#func -601 __ipipe_unstall_root+0x8
(__ipipe_restore_root+0x27)
#func -601 __ipipe_restore_root+0x8
(_spin_unlock_irqrestore+0x3d)
#func -601 _spin_unlock_irqrestore+0x8
(rcu_check_callbacks+0x5c)
#func -601 __rcu_advance_callbacks+0x8
(rcu_check_callbacks+0x35)
#func -601 ipipe_check_context+0x14
(_spin_lock_irqsave+0x49)
+func -602 ipipe_check_context+0x14
(_spin_lock_irqsave+0x1e)
+func -602 _spin_lock_irqsave+0x12
(rcu_check_callbacks+0x2c)
+func -602 rcu_check_mb+0x8 (rcu_check_callbacks+0x1b)
+func -602 rcu_check_callbacks+0xa (cpu_idle+0xb2)
+func -602 rcu_pending+0x8 (cpu_idle+0xa5)
| +end 0x8000000d -602 __ipipe_unstall_iret_root+0x36
(restore_nocheck_notrace+0x0)
| #func -602 __ipipe_unstall_iret_root+0x9
(restore_nocheck_notrace+0x0)
| #end 0xffffff15 -602 ipipe_ipiX+0x3e (default_idle+0x45)
| +end 0x8000000d -603 __ipipe_unstall_iret_root+0x36
(restore_nocheck_notrace+0x0)
| #func -603 __ipipe_unstall_iret_root+0x9
(restore_nocheck_notrace+0x0)
#func -605 __ipipe_do_critical_sync+0x9
(__ipipe_sync_stage+0x27b)
| #end 0x80000000 -606 __ipipe_sync_stage+0x21f
(rtai_hirq_dispatcher+0x3a1 [rtai_hal])
| +func -606 __ipipe_sync_stage+0xe
(rtai_hirq_dispatcher+0x3a1 [rtai_hal])
| #func -606 __ipipe_ack_apic+0x8
(rtai_hirq_dispatcher+0x257 [rtai_hal])
| +begin 0xffffff15 -606 ipipe_ipiX+0x2e (default_idle+0x45)
+end 0x8000000e -113749 default_idle+0x43 (cpu_idle+0x86)
+func -113749 default_idle+0x8 (cpu_idle+0x86)
| +end 0x80000001 -113749 ipipe_suspend_domain+0xd7 (cpu_idle+0x84)
| #begin 0x80000001 -113749 ipipe_suspend_domain+0xee (cpu_idle+0x84)
#func -113749 ipipe_suspend_domain+0xe (cpu_idle+0x84)
+func -113749 ipipe_check_context+0x14 (cpu_idle+0x5b)
+func -113749 rcu_pending+0x8 (cpu_idle+0xa5)
| +end 0x80000000 -113750 __ipipe_unstall_root+0x4a
(__ipipe_restore_root+0x27)
| #begin 0x80000000 -113750 __ipipe_unstall_root+0x5b
(__ipipe_restore_root+0x27)
#func -113750 __ipipe_unstall_root+0x8
(__ipipe_restore_root+0x27)
#func -113750 __ipipe_restore_root+0x8
(tick_nohz_stop_sched_tick+0x23b)
#func -113750 ipipe_check_context+0x14
(hrtimer_start+0xe1)
#func -113750 ipipe_check_context+0x14
(_spin_unlock_irqrestore+0x23)
#func -113750 __ipipe_restore_root+0x8
(_spin_unlock_irqrestore+0x19)
#func -113750 _spin_unlock_irqrestore+0x8
(hrtimer_start+0xd2)
#func -113750 ipipe_check_context+0x14
(hrtimer_start+0xba)
#func -113750 rb_insert_color+0xe (enqueue_hrtimer+0x7d)
#func -113751 lapic_next_event+0x8
(clockevents_program_event+0x9e)
#func -113751 clockevents_program_event+0x14
(tick_program_event+0x44)
#func -113751 set_normalized_timespec+0x8
(ktime_get_ts+0x43)
#func -113751 native_read_tsc+0x8 (read_tsc+0xe)
#func -113751 read_tsc+0x9 (getnstimeofday+0x48)
#func -113751 getnstimeofday+0xe (ktime_get_ts+0x22)
#func -113751 ktime_get_ts+0xa (ktime_get+0x1e)
#func -113751 ktime_get+0x14 (tick_program_event+0x29)
#func -113751 tick_program_event+0xe
(hrtimer_reprogram+0x86)
#func -113751 hrtimer_reprogram+0x14
(enqueue_hrtimer+0xaa)
#func -113751 enqueue_hrtimer+0xe (hrtimer_start+0xad)
#func -113752 rb_erase+0xe (__remove_hrtimer+0x57)
#func -113752 hrtimer_force_reprogram+0xa
(__remove_hrtimer+0x83)
#func -113752 rb_next+0x9 (__remove_hrtimer+0x5e)
#func -113752 __remove_hrtimer+0x16
(hrtimer_start+0x123)
#func -113752 ipipe_check_context+0x14
(_spin_lock_irqsave+0x49)
#func -113752 ipipe_check_context+0x14
(_spin_lock_irqsave+0x1e)
#func -113752 _spin_lock_irqsave+0x12
(lock_hrtimer_base+0x28)
#func -113752 lock_hrtimer_base+0x16
(hrtimer_start+0x1e)
#func -113752 hrtimer_start+0xe
(tick_nohz_stop_sched_tick+0x255)
#func -113753 hweight32+0x8
(select_nohz_load_balancer+0x58)
#func -113753 hweight32+0x8
(select_nohz_load_balancer+0x4a)
#func -113753 select_nohz_load_balancer+0xa
(tick_nohz_stop_sched_tick+0x287)
#func -113753 rcu_needs_cpu+0x8
(tick_nohz_stop_sched_tick+0x13c)
#func -113753 ipipe_check_context+0x14
(_spin_unlock_irqrestore+0x23)
#func -113753 __ipipe_restore_root+0x8
(_spin_unlock_irqrestore+0x19)
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