#21995: MQmaker WiTi / r48962 / rcu_sched self-detected stall on CPU
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Reporter: bittorf@… | Owner: developers
Type: defect | Status: new
Priority: normal | Milestone:
Component: packages | Version: Trunk
Keywords: |
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selfcompiled: r48962
this also happens every ~100 seconds during normal operation.
sometimes the boards boots without any issues.
(power wallplug already swapped).
i boot from flash and there is nothing plugged in (no ethernet or USB or
SD-card)
{{{
[ 6.320000] hub 1-0:1.0: 2 ports detected
[ 6.330000] xhci-mtk 1e1c0000.xhci: xHCI Host Controller
[ 6.340000] xhci-mtk 1e1c0000.xhci: new USB bus registered, assigned
bus number 2
[ 6.350000] usb usb2: We don't know the algorithms for LPM for this
host, disabling LPM.
[ 6.370000] hub 2-0:1.0: USB hub found
[ 6.380000] hub 2-0:1.0: 1 port detected
[ 6.400000] MTK MSDC device init.
[ 66.410000] INFO: rcu_sched self-detected stall on CPU
[ 66.410000] 0-...: (1 GPs behind) idle=38b/140000000000002/0
softirq=178/179 fqs=6000
[ 66.410000] (t=6000 jiffies g=-189 c=-190 q=54)
[ 66.410000] Task dump for CPU 0:
[ 66.410000] kmodloader R running 0 307 1 0x08100004
[ 66.410000] Stack : 00000001 80063048 00000000 00000000 803e0000
80063048 00000000 00000006
00000006 80061930 00000000 00000000 00000000 00000000 80450000
804c0000
00000000 8f96c1a0 000000e0 80450000 00000000 00000000 00000000
00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
00000000 00000000 00000000 00000000 00000000 dc8ba604 00000000
8f96c1a0
...
[ 66.410000] Call Trace:
[ 66.410000] [<80016640>] show_stack+0x50/0x84
[ 66.410000] [<8006cd84>] rcu_dump_cpu_stacks+0xa4/0xe8
[ 66.410000] [<800704d0>] rcu_check_callbacks+0x29c/0x720
[ 66.410000] [<800723f8>] update_process_times+0x34/0x70
[ 66.410000] [<80081560>] tick_sched_timer+0x238/0x29c
[ 66.410000] [<80073450>] __hrtimer_run_queues+0x10c/0x1d4
[ 66.410000] [<800736a8>] hrtimer_interrupt+0xec/0x2ac
[ 66.410000] [<80268754>] gic_compare_interrupt+0x2c/0x40
[ 66.410000] [<800687a0>] handle_percpu_devid_irq+0xac/0xf4
[ 66.410000] [<80063f3c>] generic_handle_irq+0x28/0x38
[ 66.410000] [<801d4f70>] gic_handle_local_int+0x94/0xe8
[ 66.410000] [<801d5148>] gic_irq_dispatch+0x10/0x20
[ 66.410000] [<80063f3c>] generic_handle_irq+0x28/0x38
[ 66.410000] [<80013450>] do_IRQ+0x1c/0x2c
[ 66.410000] [<801d448c>] plat_irq_dispatch+0x98/0xc4
[ 66.410000]
[ 123.860000] init: - preinit -
}}}
--
Ticket URL: <https://dev.openwrt.org/ticket/21995>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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