LEDE Project

  • Status Unconfirmed
  • Percent Complete
    0%
  • Task Type Bug Report
  • Category Kernel
  • Assigned To No-one
  • Operating System All
  • Severity High
  • Priority Very Low
  • Reported Version Trunk
  • Due in Version Undecided
  • Due Date Undecided
  • Votes 1
  • Private
Attached to Project: LEDE Project
Opened by camel - 25.05.2017

FS#804 - kernel errors - rcu_sched detected stalls on CPUs/tasks

current trunk
hardware: zbt3526 mt7621
it give more and more often this kernel bugs ...
(i did not have that much for 2 months ago)
can it be related to newer kernel on TRUNK ?

Thu May 25 18:20:04 2017 user.notice root: Subject: [router.xxx.com] KERNEL error/warnings issue - 2017-05-25:18:20:01
Thu May 25 18:20:39 2017 kern.err kernel: [ 4797.640000] INFO: rcu_sched detected stalls on CPUs/tasks:
Thu May 25 18:20:39 2017 kern.err kernel: [ 4797.640000] 2-...: (0 ticks this GP) idle=dc4/0/0 softirq=370963/370963 fqs=0
Thu May 25 18:20:39 2017 kern.err kernel: [ 4797.650000] (detected by 1, t=6003 jiffies, g=119392, c=119391, q=19565)
Thu May 25 18:20:39 2017 kern.info kernel: [ 4797.650000] Task dump for CPU 2:
Thu May 25 18:20:39 2017 kern.info kernel: [ 4797.660000] swapper/2 R running 0 0 1 0×00100000 Thu May 25 18:20:39 2017 kern.warn kernel: [ 4797.660000] Stack : 00000000 00003a99 00000000 77de22c0 00000000 00000000 804df2a4 80490000
Thu May 25 18:20:39 2017 kern.warn kernel: [ 4797.660000] 8048c75c 00000001 00000000 8048c5e0 8048c724 80490000 00000000 800135e4
Thu May 25 18:20:39 2017 kern.warn kernel: [ 4797.660000] 00000000 814a37e0 8fc72000 8fc73ec0 80490000 8005ec74 1100fc03 00000002
Thu May 25 18:20:39 2017 kern.warn kernel: [ 4797.660000] 00000000 80490000 804df2a4 8005ec6c 80490000 8001b1a8 1100fc03 00000000
Thu May 25 18:20:39 2017 kern.warn kernel: [ 4797.660000] 00000004 8048c4a0 000000a0 8001b1b0 e8c7e2d3 3a8bf07f 2cfde824 eeff5ebf
Thu May 25 18:20:39 2017 kern.warn kernel: [ 4797.660000] ...
Thu May 25 18:20:39 2017 kern.warn kernel: [ 4797.700000] Call Trace:
Thu May 25 18:20:39 2017 kern.warn kernel: [ 4797.700000] [<8000be98>] __schedule+0×574/0×758 Thu May 25 18:20:39 2017 kern.warn kernel: [ 4797.710000] [<800135e4>] r4k_wait_irqoff+0×0/0×20 Thu May 25 18:20:39 2017 kern.warn kernel: [ 4797.710000]
Thu May 25 18:20:39 2017 kern.err kernel: [ 4797.710000] rcu_sched kthread starved for 6009 jiffies! g119392 c119391 f0x0 s3 →state=0×1

 


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