can't turn on display anymore due to stall on cpu
seen on 5.13 for now:
Dez 01 16:35:53 pureos kernel: rcu: INFO: rcu_preempt self-detected stall on CPU
Dez 01 16:35:53 pureos kernel: rcu: 0-....: (5496 ticks this GP) idle=c16/1/0x4000000000000008 softirq=226899/226899 fqs=2305
Dez 01 16:35:53 pureos kernel: (t=5250 jiffies g=517533 q=119)
Dez 01 16:35:53 pureos kernel: Task dump for CPU 0:
Dez 01 16:35:53 pureos kernel: task:swapper/0 state:R running task stack: 0 pid: 0 ppid: 0 flags:0x0000000a
Dez 01 16:35:53 pureos kernel: Call trace:
Dez 01 16:35:53 pureos kernel: dump_backtrace+0x0/0x1e4
Dez 01 16:35:53 pureos kernel: show_stack+0x24/0x30
Dez 01 16:35:53 pureos kernel: sched_show_task+0x15c/0x180
Dez 01 16:35:53 pureos kernel: dump_cpu_task+0x50/0x60
Dez 01 16:35:53 pureos kernel: rcu_dump_cpu_stacks+0xfc/0x144
Dez 01 16:35:53 pureos kernel: rcu_sched_clock_irq+0xb04/0xe80
Dez 01 16:35:53 pureos kernel: update_process_times+0xa8/0xf4
Dez 01 16:35:53 pureos kernel: tick_sched_handle+0x3c/0x60
Dez 01 16:35:53 pureos kernel: tick_sched_timer+0x58/0xb0
Dez 01 16:35:53 pureos kernel: __hrtimer_run_queues+0x18c/0x3a0
Dez 01 16:35:53 pureos kernel: hrtimer_interrupt+0xf4/0x2cc
Dez 01 16:35:53 pureos kernel: arch_timer_handler_phys+0x40/0x50
Dez 01 16:35:53 pureos kernel: handle_percpu_devid_irq+0x94/0x280
Dez 01 16:35:53 pureos kernel: __handle_domain_irq+0x8c/0xf0
Dez 01 16:35:53 pureos kernel: gic_handle_irq+0xc8/0x148
Dez 01 16:35:53 pureos kernel: el1_irq+0xbc/0x154
Dez 01 16:35:53 pureos kernel: usb_hcd_submit_urb+0x38/0xa60 [usbcore]
Dez 01 16:35:53 pureos kernel: usb_submit_urb+0x19c/0x5c0 [usbcore]
Dez 01 16:35:53 pureos kernel: usb_wwan_indat_callback+0x50/0x170 [usb_wwan]
Dez 01 16:35:53 pureos kernel: __usb_hcd_giveback_urb+0xa4/0x154 [usbcore]
Dez 01 16:35:53 pureos kernel: usb_giveback_urb_bh+0xb4/0x11c [usbcore]
Dez 01 16:35:53 pureos kernel: tasklet_action_common.constprop.0+0x100/0x130
Dez 01 16:35:53 pureos kernel: tasklet_action+0x34/0x40
Dez 01 16:35:53 pureos kernel: __do_softirq+0x120/0x3e8
Dez 01 16:35:53 pureos kernel: irq_exit+0xf8/0x100
Dez 01 16:35:53 pureos kernel: __handle_domain_irq+0x90/0xf0
Dez 01 16:35:53 pureos kernel: gic_handle_irq+0xc8/0x148
Dez 01 16:35:53 pureos kernel: el1_irq+0xbc/0x154
Dez 01 16:35:53 pureos kernel: __schedule+0x8c/0x79c
Dez 01 16:35:53 pureos kernel: schedule_idle+0x34/0x54
Dez 01 16:35:53 pureos kernel: do_idle+0x1a4/0x2b0
Dez 01 16:35:53 pureos kernel: cpu_startup_entry+0x30/0x80
Dez 01 16:35:53 pureos kernel: rest_init+0xe0/0xf0
Dez 01 16:35:53 pureos kernel: arch_call_rest_init+0x1c/0x28
Dez 01 16:35:53 pureos kernel: start_kernel+0x5a8/0x5e0
Dez 01 16:36:56 pureos kernel: rcu: INFO: rcu_preempt self-detected stall on CPU
Dez 01 16:36:56 pureos kernel: rcu: 0-....: (21246 ticks this GP) idle=c16/1/0x4000000000000008 softirq=226899/226899 fqs=9251
Dez 01 16:36:56 pureos kernel: (t=21003 jiffies g=517533 q=588)
Dez 01 16:36:56 pureos kernel: Task dump for CPU 0:
Dez 01 16:36:56 pureos kernel: task:swapper/0 state:R running task stack: 0 pid: 0 ppid: 0 flags:0x0000000a
Dez 01 16:36:56 pureos kernel: Call trace:
Dez 01 16:36:56 pureos kernel: dump_backtrace+0x0/0x1e4
Dez 01 16:36:56 pureos kernel: show_stack+0x24/0x30
Dez 01 16:36:56 pureos kernel: sched_show_task+0x15c/0x180
Dez 01 16:36:56 pureos kernel: dump_cpu_task+0x50/0x60
Dez 01 16:36:56 pureos kernel: rcu_dump_cpu_stacks+0xfc/0x144
Dez 01 16:36:56 pureos kernel: rcu_sched_clock_irq+0xb04/0xe80
Dez 01 16:36:56 pureos kernel: update_process_times+0xa8/0xf4
Dez 01 16:36:56 pureos kernel: tick_sched_handle+0x3c/0x60
Dez 01 16:36:56 pureos kernel: tick_sched_timer+0x58/0xb0
Dez 01 16:36:56 pureos kernel: __hrtimer_run_queues+0x18c/0x3a0
Dez 01 16:36:56 pureos kernel: hrtimer_interrupt+0xf4/0x2cc
Dez 01 16:36:56 pureos kernel: arch_timer_handler_phys+0x40/0x50
Dez 01 16:36:56 pureos kernel: handle_percpu_devid_irq+0x94/0x280
Dez 01 16:36:56 pureos kernel: __handle_domain_irq+0x8c/0xf0
Dez 01 16:36:56 pureos kernel: gic_handle_irq+0xc8/0x148
Dez 01 16:36:56 pureos kernel: el1_irq+0xbc/0x154
Dez 01 16:36:56 pureos kernel: _raw_spin_unlock_irqrestore+0x18/0x5c
Dez 01 16:36:56 pureos kernel: usb_hcd_submit_urb+0xdc/0xa60 [usbcore]
Dez 01 16:36:56 pureos kernel: usb_submit_urb+0x19c/0x5c0 [usbcore]
Dez 01 16:36:56 pureos kernel: usb_wwan_indat_callback+0x50/0x170 [usb_wwan]
Dez 01 16:36:56 pureos kernel: __usb_hcd_giveback_urb+0xa4/0x154 [usbcore]
Dez 01 16:36:56 pureos kernel: usb_giveback_urb_bh+0xb4/0x11c [usbcore]
Dez 01 16:36:56 pureos kernel: tasklet_action_common.constprop.0+0x100/0x130
Dez 01 16:36:56 pureos kernel: tasklet_action+0x34/0x40
Dez 01 16:36:56 pureos kernel: __do_softirq+0x120/0x3e8
Dez 01 16:36:56 pureos kernel: irq_exit+0xf8/0x100
Dez 01 16:36:56 pureos kernel: __handle_domain_irq+0x90/0xf0
Dez 01 16:36:56 pureos kernel: gic_handle_irq+0xc8/0x148
Dez 01 16:36:56 pureos kernel: el1_irq+0xbc/0x154
Dez 01 16:36:56 pureos kernel: __schedule+0x8c/0x79c
Dez 01 16:36:56 pureos kernel: schedule_idle+0x34/0x54
Dez 01 16:36:56 pureos kernel: do_idle+0x1a4/0x2b0
Dez 01 16:36:56 pureos kernel: cpu_startup_entry+0x30/0x80
Dez 01 16:36:56 pureos kernel: rest_init+0xe0/0xf0
Dez 01 16:36:56 pureos kernel: arch_call_rest_init+0x1c/0x28
Dez 01 16:36:56 pureos kernel: start_kernel+0x5a8/0x5e0