kernel.log

root@lime-a64-mainline:~# [ 1588.328298] rcu: INFO: rcu_preempt self-detected stall on CPU
[ 1588.334237] rcu:     1-...!: (1 ticks this GP) idle=3ea/0/0x1 softirq=39241/39241 fqs=0 
[ 1588.342269] rcu:      (t=734440 jiffies g=100073 q=1)
[ 1588.347194] rcu: rcu_preempt kthread starved for 734440 jiffies! g100073 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
[ 1588.358162] rcu: RCU grace-period kthread stack dump:
[ 1588.363346] rcu_preempt     I    0    10      2 0x00000028
[ 1588.368982] Call trace:
[ 1588.371509]  __switch_to+0x94/0xd8
[ 1588.375007]  __schedule+0x1d4/0x5a0
[ 1588.378590]  schedule+0x38/0xa0
[ 1588.381819]  schedule_timeout+0x90/0x368
[ 1588.385852]  rcu_gp_kthread+0x494/0x810
[ 1588.389791]  kthread+0x128/0x130
[ 1588.393108]  ret_from_fork+0x10/0x18
[ 1588.396783] Task dump for CPU 0:
[ 1588.400097] swapper/0       R  running task        0     0      0 0x00000028
[ 1588.407335] Call trace:
[ 1588.409851]  __switch_to+0x94/0xd8
[ 1588.413345]  0x21ccf582440
[ 1588.416125] Task dump for CPU 1:
[ 1588.419437] swapper/1       R  running task        0     0      1 0x0000002a
[ 1588.426673] Call trace:
[ 1588.429190]  dump_backtrace+0x0/0x1a8
[ 1588.432952]  show_stack+0x14/0x20
[ 1588.436359]  sched_show_task+0x134/0x170
[ 1588.440388]  dump_cpu_task+0x40/0x50
[ 1588.444060]  rcu_dump_cpu_stacks+0x94/0xd4
[ 1588.448265]  rcu_check_callbacks+0x51c/0x838
[ 1588.452651]  update_process_times+0x2c/0x58
[ 1588.456948]  tick_sched_handle.isra.5+0x30/0x50
[ 1588.461599]  tick_sched_timer+0x48/0x98
[ 1588.465539]  __hrtimer_run_queues+0x120/0x1b8
[ 1588.470011]  hrtimer_interrupt+0xd4/0x250
[ 1588.474131]  arch_timer_handler_phys+0x28/0x40
[ 1588.478695]  handle_percpu_devid_irq+0x80/0x138
[ 1588.487545]  generic_handle_irq+0x24/0x38
[ 1588.495804]  __handle_domain_irq+0x5c/0xb0
[ 1588.504101]  gic_handle_irq+0x58/0xa8
[ 1588.511997]  el1_irq+0xb0/0x128
[ 1588.519301]  arch_cpu_idle+0x10/0x18
[ 1588.526989]  do_idle+0x224/0x258
[ 1588.534259]  cpu_startup_entry+0x24/0x28
[ 1588.542184]  secondary_start_kernel+0x18c/0x1d0
[ 1588.550681] Task dump for CPU 2:
[ 1588.557806] swapper/2       R  running task        0     0      1 0x0000002a
[ 1588.572528] Call trace:
[ 1588.578711]  __switch_to+0x94/0xd8
[ 1588.585840]  cpuidle_devices+0x0/0x8
[ 1588.593073] Task dump for CPU 3:
[ 1588.599888] swapper/3       R  running task        0     0      1 0x0000002a
[ 1588.614032] Call trace:
[ 1588.619958]  __switch_to+0x94/0xd8
[ 1588.626867]  cpuidle_devices+0x0/0x8