[   81.777083] rcu: INFO: rcu_sched self-detected stall on CPU
[   81.782689] rcu: 	0-...!: (1 GPs behind) idle=aa2/0/0x3 softirq=2035/2038 fqs=12
[   81.790205] 	(t=6000 jiffies g=477 q=1524)
[   81.794318] rcu: rcu_sched kthread starved for 5976 jiffies! g477 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
[   81.804449] rcu: 	Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
[   81.813446] rcu: RCU grace-period kthread stack dump:
[   81.818518] task:rcu_sched       state:I stack:    0 pid:   10 ppid:     2 flags:0x00000000
[   81.826921] [<c0788bbc>] (__schedule) from [<c0788ee4>] (schedule+0x54/0xd0)
[   81.834004] [<c0788ee4>] (schedule) from [<c078c790>] (schedule_timeout+0x1ac/0x24c)
[   81.841786] [<c078c790>] (schedule_timeout) from [<c017e7f0>] (rcu_gp_kthread+0x500/0xbc8)
[   81.850094] [<c017e7f0>] (rcu_gp_kthread) from [<c013c9a8>] (kthread+0x14c/0x150)
[   81.857612] [<c013c9a8>] (kthread) from [<c0100148>] (ret_from_fork+0x14/0x2c)
[   81.864864] Exception stack(0xc106ffb0 to 0xc106fff8)
[   81.869937] ffa0:                                     00000000 00000000 00000000 00000000
[   81.878150] ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   81.886363] ffe0: 00000000 00000000 00000000 00000000 00000013 00000000
[   81.893011] NMI backtrace for cpu 0
[   81.896515] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.10 #0
[   81.902285] Hardware name: Marvell Armada 380/385 (Device Tree)
[   81.908234] [<c010ddec>] (unwind_backtrace) from [<c0109e94>] (show_stack+0x10/0x14)
[   81.916013] [<c0109e94>] (show_stack) from [<c045489c>] (dump_stack+0x9c/0xb0)
[   81.923271] [<c045489c>] (dump_stack) from [<c045bd18>] (nmi_cpu_backtrace+0xc8/0xf4)
[   81.931138] [<c045bd18>] (nmi_cpu_backtrace) from [<c045be68>] (nmi_trigger_cpumask_backtrace+0x124/0x138)
[   81.940836] [<c045be68>] (nmi_trigger_cpumask_backtrace) from [<c017b920>] (rcu_dump_cpu_stacks+0xe8/0x110)
[   81.950622] [<c017b920>] (rcu_dump_cpu_stacks) from [<c018082c>] (rcu_sched_clock_irq+0x6d0/0x898)
[   81.959622] [<c018082c>] (rcu_sched_clock_irq) from [<c0186c6c>] (update_process_times+0x60/0x90)
[   81.968539] [<c0186c6c>] (update_process_times) from [<c019715c>] (tick_sched_timer+0x78/0x284)
[   81.977278] [<c019715c>] (tick_sched_timer) from [<c0187600>] (__hrtimer_run_queues+0x154/0x200)
[   81.986103] [<c0187600>] (__hrtimer_run_queues) from [<c0187fd8>] (hrtimer_interrupt+0x118/0x2a0)
[   81.995016] [<c0187fd8>] (hrtimer_interrupt) from [<c010d3f4>] (twd_handler+0x30/0x38)
[   82.002970] [<c010d3f4>] (twd_handler) from [<c0171620>] (handle_percpu_devid_irq+0x78/0x138)
[   82.011537] [<c0171620>] (handle_percpu_devid_irq) from [<c016bb20>] (generic_handle_irq+0x34/0x44)
[   82.020626] [<c016bb20>] (generic_handle_irq) from [<c016c118>] (__handle_domain_irq+0x5c/0xb4)
[   82.029366] [<c016c118>] (__handle_domain_irq) from [<c046c06c>] (gic_handle_irq+0x80/0x94)
[   82.037756] [<c046c06c>] (gic_handle_irq) from [<c0100b0c>] (__irq_svc+0x6c/0x90)
[   82.045271] Exception stack(0xc0b01ca8 to 0xc0b01cf0)
[   82.050344] 1ca0:                   00000000 00000001 0000006e 00000000 c0b01da4 c0b01da4
[   82.058558] 1cc0: cadd8240 bf23b1ac cb827010 cad41000 bf23b24c c0b04fdc 160000e0 c0b01cf8
[   82.066770] 1ce0: 00000001 bf2386e0 80000113 ffffffff
[   82.071853] [<c0100b0c>] (__irq_svc) from [<bf2386e0>] (ipt_do_table+0x2c8/0xd48 [ip_tables])
[   82.080426] [<bf2386e0>] (ipt_do_table [ip_tables]) from [<bf150094>] (iptable_mangle_hook+0x54/0xc8 [iptable_mangle])
[   82.091177] [<bf150094>] (iptable_mangle_hook [iptable_mangle]) from [<c069cdc4>] (nf_hook_slow+0x38/0xb4)
[   82.100878] [<c069cdc4>] (nf_hook_slow) from [<c06aa268>] (__ip_local_out+0x9c/0xb0)
[   82.108656] [<c06aa268>] (__ip_local_out) from [<c06aa290>] (ip_local_out+0x14/0x3c)
[   82.116436] [<c06aa290>] (ip_local_out) from [<c06eb9f4>] (igmp_ifc_timer_expire+0x1bc/0x2fc)
[   82.125001] [<c06eb9f4>] (igmp_ifc_timer_expire) from [<c0185b9c>] (call_timer_fn.constprop.3+0x24/0x98)
[   82.134523] [<c0185b9c>] (call_timer_fn.constprop.3) from [<c0185eb4>] (run_timer_softirq+0x2a4/0x304)
[   82.143870] [<c0185eb4>] (run_timer_softirq) from [<c0101308>] (__do_softirq+0x120/0x2ac)
[   82.152087] [<c0101308>] (__do_softirq) from [<c0123538>] (irq_exit+0x74/0x80)
[   82.159344] [<c0123538>] (irq_exit) from [<c016c11c>] (__handle_domain_irq+0x60/0xb4)
[   82.167210] [<c016c11c>] (__handle_domain_irq) from [<c046c06c>] (gic_handle_irq+0x80/0x94)
[   82.175599] [<c046c06c>] (gic_handle_irq) from [<c0100b0c>] (__irq_svc+0x6c/0x90)
[   82.183113] Exception stack(0xc0b01f28 to 0xc0b01f70)
[   82.188186] 1f20:                   00000000 000eeaa0 dfb57b44 c0113c20 ffffe000 c0b04f14
[   82.196399] 1f40: c0b04f54 00000001 c0a4c668 c0b0d2e0 00000000 00000000 00000000 c0b01f78
[   82.204612] 1f60: c010744c c0107450 60000013 ffffffff
[   82.209689] [<c0100b0c>] (__irq_svc) from [<c0107450>] (arch_cpu_idle+0x38/0x3c)
[   82.217119] [<c0107450>] (arch_cpu_idle) from [<c078d228>] (default_idle_call+0x2c/0x3c)
[   82.225250] [<c078d228>] (default_idle_call) from [<c01493f0>] (do_idle+0x198/0x1bc)
[   82.233029] [<c01493f0>] (do_idle) from [<c01496b0>] (cpu_startup_entry+0x18/0x1c)
[   82.240634] [<c01496b0>] (cpu_startup_entry) from [<c0a00ee4>] (start_kernel+0x568/0x57c)