v4.13 on nokia n900: oops during tethering
From: Pavel Machek
Date: Mon Feb 12 2018 - 15:10:10 EST
Hi!
During tethering, I got oops in ssi_stop_tx(), followed by failure of
GPRS. I used GPRS tethering a lot with some older kernel, and it was
stable for hours.
It seems v4.12 has the same problem. In v4.15 usb networking does not
work at all, so I can't test... v4.10 seems to have similar problem. (Testing is
slighlty tricky, as my internet connection is ... tethering using
N900.)
Any ideas?
Pavel
[ 342.915191] DISPC: dispc_runtime_put
[ 342.915222] DISPC: dispc_save_context
[ 342.915283] DISPC: context saved
[ 342.925781] DSS: dss_save_context
[ 342.925811] DSS: context saved
[ 442.942291] ------------[ cut here ]------------
[ 442.947448] Kernel BUG at c047bf3c [verbose debug info unavailable]
[ 442.954345] Internal error: Oops - BUG: 0 [#1] ARM
[ 442.959625] Modules linked in:
[ 442.963012] CPU: 0 PID: 52 Comm: irq/83-SSI PORT Not tainted 4.13.0-14753-g3f4b230-dirty #473
[ 442.972381] Hardware name: Nokia RX-51 board
[ 442.977081] task: ce522a80 task.stack: ce532000
[ 442.982086] PC is at ssi_stop_tx+0xa0/0xa8
[ 442.986602] LR is at ssi_stop_tx+0x20/0xa8
[ 442.991119] pc : [<c047bf3c>] lr : [<c047bebc>] psr: 60000013
[ 442.997985] sp : ce533ea8 ip : 00000000 fp : 01000300
[ 443.003723] r10: ce5ebd3c r9 : ce394610 r8 : ce617000
[ 443.009429] r7 : ce394610 r6 : ce518c28 r5 : ce513400 r4 : ce518c10
[ 443.016601] r3 : 00000000 r2 : ce532000 r1 : ce533ea0 r0 : ce518c28
[ 443.023742] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
[ 443.031555] Control: 10c5387d Table: 8e71c019 DAC: 00000051
[ 443.037841] Process irq/83-SSI PORT (pid: 52, stack limit = 0xce532210)
[ 443.045104] Stack: (0xce533ea8 to 0xce534000)
[ 443.049865] 3ea0: c047be9c ce5ebcc0 ce61a040 ce5ebd20 ce630d40 c047e430
[ 443.058868] 3ec0: c047e368 ce61a040 ce513400 ce518c10 ce518c38 ce518c4c 00000001 c047a8b0
[ 443.067840] 3ee0: ce518c10 ce61afc0 00000046 00000001 00000001 00000000 ce513400 c015cad8
[ 443.076782] 3f00: ce518c10 ce00b95c 00000000 c047aa8c 0000d6d6 ce533f30 fa058000 c0729ccc
[ 443.085754] 3f20: 60000013 ffffffff 00000051 ce519c40 00000001 ce00b900 ce00b954 c015cad8
[ 443.094726] 3f40: c0c505b6 ce00b95c 00000000 c015caf4 ce519c40 00000001 ce00b900 c015c87c
[ 443.103698] 3f60: 00000000 c015ca1c 00000000 ce516a80 00000000 ce519c00 ce516aa8 ce519c40
[ 443.112670] 3f80: ce04bd54 c015c774 00000000 c014021c ce519c00 c0140110 00000000 00000000
[ 443.121612] 3fa0: 00000000 00000000 00000000 c01076b8 00000000 00000000 00000000 00000000
[ 443.130584] 3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 443.139526] 3fe0: 00000000 00000000 00000000 00000000 00000013 00000000 fffffedf ffffffff
[ 443.154663] [<c047bf3c>] (ssi_stop_tx) from [<c047e430>] (ssip_swbreak_complete+0xc8/0x108)
[ 443.170043] [<c047e430>] (ssip_swbreak_complete) from [<c047a8b0>] (ssi_pio_complete+0x120/0x254)
[ 443.186035] [<c047a8b0>] (ssi_pio_complete) from [<c047aa8c>] (ssi_pio_thread+0xa8/0x450)
[ 443.201354] [<c047aa8c>] (ssi_pio_thread) from [<c015caf4>] (irq_thread_fn+0x1c/0x34)
[ 443.216308] [<c015caf4>] (irq_thread_fn) from [<c015c87c>] (irq_thread+0x108/0x1b0)
[ 443.231109] [<c015c87c>] (irq_thread) from [<c014021c>] (kthread+0x10c/0x148)
[ 443.245239] [<c014021c>] (kthread) from [<c01076b8>] (ret_from_fork+0x14/0x3c)
[ 443.259521] Code: e1a00006 eb0ab766 e3a00000 e8bd80f8 (e7f001f2)
[ 443.272705] DISPC: dispc_runtime_get
[ 443.283447] DSS: dss_restore_context
[ 443.294006] DSS: context restored
[ 443.304199] DISPC: fifo(0) threshold (bytes), old 960/1023, new 960/1023
[ 443.318145] DISPC: fifo(1) threshold (bytes), old 960/1023, new 960/1023
[ 443.331909] DISPC: fifo(2) threshold (bytes), old 960/1023, new 960/1023
[ 443.345611] DISPC: dispc_restore_context
[ 443.356262] DISPC: context restored
[ 443.366302] DSS: set fck to 72000000
[ 443.376190] DISPC: lck = 72000000 (1)
[ 443.386016] DISPC: pck = 24000000 (3)
[ 443.397705] APPLY: writing mgr 0 regs
[ 443.407165] APPLY: writing ovl 0 regs
[ 443.416442] APPLY: writing ovl 0 regs extra
[ 443.426086] APPLY: writing ovl 1 regs
[ 443.434997] APPLY: writing ovl 1 regs extra
[ 443.444305] APPLY: writing ovl 2 regs
[ 443.452880] APPLY: writing ovl 2 regs extra
[ 443.461883] APPLY: writing mgr 0 regs extra
[ 443.470733] DISPC: channel 0 xres 800 yres 480
[ 443.479949] DISPC: pck 24000000
[ 443.487762] DISPC: hsw 4 hfp 28 hbp 24 vsw 3 vfp 3 vbp 4
[ 443.497741] DISPC: vsync_level 0 hsync_level 0 data_pclk_edge 1 de_level 1 sync_pclk_edge 1
[ 443.511169] DISPC: hsync 28037Hz, vsync 57Hz
[ 443.520019] DISPC: lck = 72000000 (1)
[ 443.528015] DISPC: pck = 24000000 (3)
[ 443.692840] ---[ end trace f03d078078f0bc22 ]---
[ 443.701812] genirq: exiting task "irq/83-SSI PORT" (52) is an active IRQ thread (irq 83)
[ 444.290863] irq 83: nobody cared (try booting with the "irqpoll" option)
[ 444.302032] CPU: 0 PID: 52 Comm: irq/83-SSI PORT Tainted: G D 4.13.0-14753-g3f4b230-dirty #473
[ 444.320831] Hardware name: Nokia RX-51 board
[ 444.329833] [<c010d5d4>] (unwind_backtrace) from [<c010ae18>] (show_stack+0x10/0x14)
[ 444.342681] [<c010ae18>] (show_stack) from [<c015dbe0>] (__report_bad_irq+0x24/0xc0)
[ 444.355712] [<c015dbe0>] (__report_bad_irq) from [<c015df20>] (note_interrupt+0x23c/0x2a0)
[ 444.369537] [<c015df20>] (note_interrupt) from [<c015bbb4>] (handle_irq_event_percpu+0x48/0x58)
[ 444.383880] [<c015bbb4>] (handle_irq_event_percpu) from [<c015bbfc>] (handle_irq_event+0x38/0x5c)
[ 444.398712] [<c015bbfc>] (handle_irq_event) from [<c015eb68>] (handle_level_irq+0x9c/0x10c)
[ 444.413085] [<c015eb68>] (handle_level_irq) from [<c015b364>] (generic_handle_irq+0x18/0x28)
[ 444.427673] [<c015b364>] (generic_handle_irq) from [<c015b464>] (__handle_domain_irq+0x4c/0xa4)
[ 444.442779] [<c015b464>] (__handle_domain_irq) from [<c010b9ac>] (__irq_svc+0x6c/0x90)
[ 444.457183] [<c010b9ac>] (__irq_svc) from [<c01298e4>] (__do_softirq+0x6c/0x224)
[ 444.471282] [<c01298e4>] (__do_softirq) from [<c0129d48>] (irq_exit+0xc0/0x110)
[ 444.485504] [<c0129d48>] (irq_exit) from [<c015b46c>] (__handle_domain_irq+0x54/0xa4)
[ 444.500518] [<c015b46c>] (__handle_domain_irq) from [<c010b9ac>] (__irq_svc+0x6c/0x90)
[ 444.515838] [<c010b9ac>] (__irq_svc) from [<c0729ccc>] (_raw_spin_unlock_irq+0xc/0x10)
[ 444.531341] [<c0729ccc>] (_raw_spin_unlock_irq) from [<c015c990>] (irq_finalize_oneshot+0x6c/0xf8)
[ 444.555725] [<c015c990>] (irq_finalize_oneshot) from [<c013e8ec>] (task_work_run+0x8c/0xb8)
[ 444.572570] [<c013e8ec>] (task_work_run) from [<c01287d8>] (do_exit+0x304/0x9dc)
[ 444.588531] [<c01287d8>] (do_exit) from [<c010b1cc>] (die+0x3b0/0x404)
[ 444.603668] [<c010b1cc>] (die) from [<c0101154>] (do_undefinstr+0x150/0x1f4)
[ 444.619323] [<c0101154>] (do_undefinstr) from [<c010ba58>] (__und_svc_finish+0x0/0x48)
[ 444.635864] Exception stack(0xce533e58 to 0xce533ea0)
[ 444.649505] 3e40: ce518c28 ce533ea0
[ 444.666717] 3e60: ce532000 00000000 ce518c10 ce513400 ce518c28 ce394610 ce617000 ce394610
[ 444.684051] 3e80: ce5ebd3c 01000300 00000000 ce533ea8 c047bebc c047bf3c 60000013 ffffffff
[ 444.701354] [<c010ba58>] (__und_svc_finish) from [<c047bf3c>] (ssi_stop_tx+0xa0/0xa8)
[ 444.718292] [<c047bf3c>] (ssi_stop_tx) from [<c047e430>] (ssip_swbreak_complete+0xc8/0x108)
[ 444.735748] [<c047e430>] (ssip_swbreak_complete) from [<c047a8b0>] (ssi_pio_complete+0x120/0x254)
[ 444.753723] [<c047a8b0>] (ssi_pio_complete) from [<c047aa8c>] (ssi_pio_thread+0xa8/0x450)
[ 444.771087] [<c047aa8c>] (ssi_pio_thread) from [<c015caf4>] (irq_thread_fn+0x1c/0x34)
[ 444.787994] [<c015caf4>] (irq_thread_fn) from [<c015c87c>] (irq_thread+0x108/0x1b0)
[ 444.804779] [<c015c87c>] (irq_thread) from [<c014021c>] (kthread+0x10c/0x148)
[ 444.820861] [<c014021c>] (kthread) from [<c01076b8>] (ret_from_fork+0x14/0x3c)
[ 444.837005] handlers:
[ 444.847656] [<c015bc20>] irq_default_primary_handler threaded [<c047a9e4>] ssi_pio_thread
[ 444.864868] Disabling IRQ #83
[ 444.876556] sched: RT throttling activated
[ 445.600189] ssi-protocol ssi-protocol: Watchdog trigerred
[ 445.614593] ssi-protocol ssi-protocol: Main state: 2
[ 445.628082] ssi-protocol ssi-protocol: Recv state: 1
[ 445.641357] ssi-protocol ssi-protocol: Send state: 0
[ 445.654357] ssi-protocol ssi-protocol: CMT Online
[ 445.666839] ssi-protocol ssi-protocol: Wake test 0
[ 445.679229] ssi-protocol ssi-protocol: Data RX id: 61
[ 445.691711] ssi-protocol ssi-protocol: Data TX id: 252
[ 445.703979] cmt-speech cmt-speech: Cmd flushed while driver active
[ 445.723602] gprs0: detached
[ 446.946197] nokia-modem n900-modem: CMT rst line change detected
[ 446.959381] ssi-protocol ssi-protocol: CMT reset detected!
[ 446.971710] ssi-protocol ssi-protocol: Main state: 0
[ 446.983306] ssi-protocol ssi-protocol: Recv state: 0
[ 446.994628] ssi-protocol ssi-protocol: Send state: 0
[ 447.005767] ssi-protocol ssi-protocol: CMT Offline
[ 447.016571] ssi-protocol ssi-protocol: Wake test 0
[ 447.027130] ssi-protocol ssi-protocol: Data RX id: 0
[ 447.037658] ssi-protocol ssi-protocol: Data TX id: 0
pavel@n900:~/g/tui/ofone$ cat /proc/interrupts
CPU0
23: 6 INTC 7 Edge TWL4030-PIH
25: 0 INTC 9 Edge l3-debug-irq
26: 0 INTC 10 Edge l3-app-irq
28: 0 INTC 12 Edge DMA
29: 24202 INTC 13 Edge omap-dma-engine
36: 0 INTC 20 Edge gpmc
40: 0 INTC 24 Edge 480bd400.mmu
41: 6 INTC 25 Edge OMAP DISPC
45: 0 INTC 29 Edge 48310000.gpio
46: 331 INTC 30 Edge 49050000.gpio
47: 9 INTC 31 Edge 49052000.gpio
48: 1399 INTC 32 Edge 49054000.gpio
49: 538 INTC 33 Edge 49056000.gpio
50: 0 INTC 34 Edge 49058000.gpio
53: 34189 INTC 37 Edge gp_timer
72: 3560 INTC 56 Edge 48070000.i2c
73: 11983 INTC 57 Edge 48072000.i2c
77: 49 INTC 61 Edge 48060000.i2c
83: 200001 INTC 67 Edge SSI PORT
87: 566 INTC 71 Edge gdd_mpu
99: 19546 INTC 83 Edge mmc0
102: 1425 INTC 86 Edge mmc1
108: 2384 INTC 92 Edge musb-hdrc.0.auto
154: 331 49050000.gpio 10 Edge wl1251
183: 8 49052000.gpio 7 Edge Keypad Slide
184: 1 49052000.gpio 8 Edge modem_rst_ind
201: 0 49052000.gpio 25 Edge Proximity Sensor
212: 1399 49054000.gpio 4 Edge tsc200x
222: 0 49054000.gpio 14 Edge Camera Lens Cover
225: 0 49054000.gpio 17 Edge Lock Button
263: 538 49056000.gpio 23 Edge SSI cawake
289: 0 49058000.gpio 17 Edge avdet-gpio
293: 0 49058000.gpio 21 Edge lis3lv02d
304: 19186 PRCM Edge pm_wkup
313: 0 PRCM Edge pinctrl, pinctrl, pinctrl, pm_io
337: 0 twl4030 0 Edge twl4030_gpio
338: 3 twl4030 1 Edge 48070000.i2c:twl@48:keypad
339: 2 twl4030 2 Edge 48070000.i2c:twl@48:bci
340: 0 twl4030 3 Edge twl4030_madc
342: 0 twl4030 5 Edge twl4030_power
345: 0 twl4030 8 Edge twl4030_pwrbutton
346: 0 twl4030 9 Edge 48070000.i2c:twl@48:bci
347: 0 twl4030 10 Edge twl4030_usb
348: 0 twl4030 11 Edge rtc0
Err: 0
pavel@n900:~/g/tui/ofone$ ping atrey
----- v4.10 problem:
[ 345.690307] DISPC: pck = 24000000 (3)
[ 346.649139] sched: RT throttling activated
[ 352.172729] BUG: spinlock lockup suspected on CPU#0, irq/263-SSI
caw/77
[ 352.183654] lock: 0xce5851a8, .magic: dead4ead, .owner: irq/83-SSI
PORT/76, .owner_cpu: 0
[ 352.196472] CPU: 0 PID: 77 Comm: irq/263-SSI caw Not tainted
4.10.0-00233-gf1c0c95-dirty #477
[ 352.209686] Hardware name: Nokia RX-51 board
[ 352.218444] [<c010c9a4>] (unwind_backtrace) from [<c010a254>]
(show_stack+0x10/0x14)
[ 352.231231] [<c010a254>] (show_stack) from [<c0151ec0>]
(do_raw_spin_lock+0x104/0x14c)
[ 352.244171] [<c0151ec0>] (do_raw_spin_lock) from [<c0471dcc>]
(ssip_pn_xmit+0x94/0x210)
[ 352.257476] [<c0471dcc>] (ssip_pn_xmit) from [<c0564694>]
(dev_hard_start_xmit+0x80/0x118)
[ 352.271331] [<c0564694>] (dev_hard_start_xmit) from [<c0582f6c>]
(sch_direct_xmit+0xf4/0x18c)
[ 352.285552] [<c0582f6c>] (sch_direct_xmit) from [<c0564ac0>]
(__dev_queue_xmit+0x2d0/0x5dc)
[ 352.299804] [<c0564ac0>] (__dev_queue_xmit) from [<c0637804>]
(pn_send+0x148/0x1f4)
[ 352.313476] [<c0637804>] (pn_send) from [<c06381d8>]
(pn_skb_send+0x150/0x1b4)
[ 352.326782] [<c06381d8>] (pn_skb_send) from [<c0638d30>]
(pipe_skb_send+0xb0/0xf4)
[ 352.340698] [<c0638d30>] (pipe_skb_send) from [<c063a8e4>]
(gprs_xmit+0x70/0xfc)
[ 352.354583] [<c063a8e4>] (gprs_xmit) from [<c0564694>]
(dev_hard_start_xmit+0x80/0x118)
[ 352.369354] [<c0564694>] (dev_hard_start_xmit) from [<c0582f6c>]
(sch_direct_xmit+0xf4/0x18c)
[ 352.384918] [<c0582f6c>] (sch_direct_xmit) from [<c0564ac0>]
(__dev_queue_xmit+0x2d0/0x5dc)
[ 352.400573] [<c0564ac0>] (__dev_queue_xmit) from [<c05a5f44>]
(ip_finish_output2+0x1ac/0x350)
[ 352.416687] [<c05a5f44>] (ip_finish_output2) from [<c05a6e58>]
(ip_output+0xec/0xfc)
[ 352.432159] [<c05a6e58>] (ip_output) from [<c05a31f8>]
(ip_forward_finish+0x90/0xa4)
[ 352.447906] [<c05a31f8>] (ip_forward_finish) from [<c05a3628>]
(ip_forward+0x41c/0x490)
[ 352.464080] [<c05a3628>] (ip_forward) from [<c05a14e0>]
(ip_rcv_finish+0x244/0x3a0)
[ 352.479949] [<c05a14e0>] (ip_rcv_finish) from [<c05a1d8c>]
(ip_rcv+0x2e4/0x484)
[ 352.495605] [<c05a1d8c>] (ip_rcv) from [<c055e5c8>]
(__netif_receive_skb_core+0x2bc/0x8b8)
[ 352.512420] [<c055e5c8>] (__netif_receive_skb_core) from
[<c05619dc>] (process_backlog+0x6c/0xe0)
[ 352.529937] [<c05619dc>] (process_backlog) from [<c056222c>]
(net_rx_action+0xf8/0x2ac)
[ 352.546539] [<c056222c>] (net_rx_action) from [<c0129d0c>]
(__do_softirq+0xc8/0x218)
[ 352.562988] [<c0129d0c>] (__do_softirq) from [<c012a108>]
(irq_exit+0xc0/0x110)
[ 352.579223] [<c012a108>] (irq_exit) from [<c0158520>]
(__handle_domain_irq+0x54/0xa4)
[ 352.596130] [<c0158520>] (__handle_domain_irq) from [<c010adac>]
(__irq_svc+0x6c/0x90)
[ 352.613189] [<c010adac>] (__irq_svc) from [<c06adcec>]
(_raw_spin_unlock_irq+0xc/0x10)
[ 352.630157] [<c06adcec>] (_raw_spin_unlock_irq) from [<c0144168>]
(finish_task_switch+0x58/0x158)
[ 352.648193] [<c0144168>] (finish_task_switch) from [<c06a8300>]
(schedule+0x38/0x9c)
[ 352.664947] [<c06a8300>] (schedule) from [<c0159860>]
(irq_thread+0x98/0x1b0)
[ 352.680999] [<c0159860>] (irq_thread) from [<c013fc40>]
(kthread+0xf0/0x12c)
[ 352.696990] [<c013fc40>] (kthread) from [<c01076d8>]
(ret_from_fork+0x14/0x3c)
[ 359.178649] BUG: spinlock lockup suspected on CPU#0, irq/263-SSI
caw/77
[ 359.194122] lock: 0xce4a7c28, .magic: dead4ead, .owner: irq/83-SSI
PORT/76, .owner_cpu: 0
[ 359.211395] CPU: 0 PID: 77 Comm: irq/263-SSI caw Not tainted
4.10.0-00233-gf1c0c95-dirty #477
[ 359.228973] Hardware name: Nokia RX-51 board
[ 359.241943] [<c010c9a4>] (unwind_backtrace) from [<c010a254>]
(show_stack+0x10/0x14)
[ 359.258728] [<c010a254>] (show_stack) from [<c0151ec0>]
(do_raw_spin_lock+0x104/0x14c)
[ 359.275695] [<c0151ec0>] (do_raw_spin_lock) from [<c046fdbc>]
(ssi_start_tx+0x18/0x60)
[ 359.292694] [<c046fdbc>] (ssi_start_tx) from [<c0471ef4>]
(ssip_pn_xmit+0x1bc/0x210)
[ 359.309509] [<c0471ef4>] (ssip_pn_xmit) from [<c0564694>]
(dev_hard_start_xmit+0x80/0x118)
[ 359.326812] [<c0564694>] (dev_hard_start_xmit) from [<c0582f6c>]
(sch_direct_xmit+0xf4/0x18c)
[ 359.344421] [<c0582f6c>] (sch_direct_xmit) from [<c0564ac0>]
(__dev_queue_xmit+0x2d0/0x5dc)
[ 359.361816] [<c0564ac0>] (__dev_queue_xmit) from [<c0637804>]
(pn_send+0x148/0x1f4)
[ 359.378448] [<c0637804>] (pn_send) from [<c06381d8>]
(pn_skb_send+0x150/0x1b4)
[ 359.394622] [<c06381d8>] (pn_skb_send) from [<c0638d30>]
(pipe_skb_send+0xb0/0xf4)
[ 359.411193] [<c0638d30>] (pipe_skb_send) from [<c063a8e4>]
(gprs_xmit+0x70/0xfc)
[ 359.427581] [<c063a8e4>] (gprs_xmit) from [<c0564694>]
(dev_hard_start_xmit+0x80/0x118)
[ 359.444641] [<c0564694>] (dev_hard_start_xmit) from [<c0582f6c>]
(sch_direct_xmit+0xf4/0x18c)
[ 359.462341] [<c0582f6c>] (sch_direct_xmit) from [<c0564ac0>]
(__dev_queue_xmit+0x2d0/0x5dc)
[ 359.479797] [<c0564ac0>] (__dev_queue_xmit) from [<c05a5f44>]
(ip_finish_output2+0x1ac/0x350)
[ 359.497406] [<c05a5f44>] (ip_finish_output2) from [<c05a6e58>]
(ip_output+0xec/0xfc)
[ 359.514221] [<c05a6e58>] (ip_output) from [<c05a31f8>]
(ip_forward_finish+0x90/0xa4)
[ 359.531005] [<c05a31f8>] (ip_forward_finish) from [<c05a3628>]
(ip_forward+0x41c/0x490)
[ 359.548034] [<c05a3628>] (ip_forward) from [<c05a14e0>]
(ip_rcv_finish+0x244/0x3a0)
[ 359.564636] [<c05a14e0>] (ip_rcv_finish) from [<c05a1d8c>]
(ip_rcv+0x2e4/0x484)
[ 359.580902] [<c05a1d8c>] (ip_rcv) from [<c055e5c8>]
(__netif_receive_skb_core+0x2bc/0x8b8)
[ 359.598175] [<c055e5c8>] (__netif_receive_skb_core) from
[<c05619dc>] (process_backlog+0x6c/0xe0)
[ 359.616058] [<c05619dc>] (process_backlog) from [<c056222c>]
(net_rx_action+0xf8/0x2ac)
[ 359.633056] [<c056222c>] (net_rx_action) from [<c0129d0c>]
(__do_softirq+0xc8/0x218)
[ 359.649780] [<c0129d0c>] (__do_softirq) from [<c012a108>]
(irq_exit+0xc0/0x110)
[ 359.666076] [<c012a108>] (irq_exit) from [<c0158520>]
(__handle_domain_irq+0x54/0xa4)
[ 359.682922] [<c0158520>] (__handle_domain_irq) from [<c010adac>]
(__irq_svc+0x6c/0x90)
[ 359.699829] [<c010adac>] (__irq_svc) from [<c06adcec>]
(_raw_spin_unlock_irq+0xc/0x10)
[ 359.716644] [<c06adcec>] (_raw_spin_unlock_irq) from [<c0144168>]
(finish_task_switch+0x58/0x158)
[ 359.734527] [<c0144168>] (finish_task_switch) from [<c06a8300>]
(schedule+0x38/0x9c)
[ 359.751159] [<c06a8300>] (schedule) from [<c0159860>]
(irq_thread+0x98/0x1b0)
[ 359.767181] [<c0159860>] (irq_thread) from [<c013fc40>]
(kthread+0xf0/0x12c)
[ 359.783081] [<c013fc40>] (kthread) from [<c01076d8>]
(ret_from_fork+0x14/0x3c)
[ 359.822143] ssi-protocol ssi-protocol: Watchdog trigerred
[ 359.836578] ssi-protocol ssi-protocol: Main state: 2
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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