L2 Booting Error RCU with RT

[   37.730583] random: nonblocking pool is initialized
[  313.467664] kvm [1537]: fault_ipa: fa400000
[  313.468410] kvm [1537]: pfn: 3a3e00
[  482.489098] sched: RT throttling activated
[  545.261107] INFO: rcu_preempt detected stalls on CPUs/tasks:
[  545.321149] 	(detected by 0, t=5252 jiffies, g=278, c=277, q=6)
[  545.383154] All QSes seen, last rcu_preempt kthread activity 5252 (4295027476-4295022224), jiffies_till_next_fqs=1, root ->qsmask 0x0
[  545.505785] kthreadd        R  running task        0     2      0 0x00000002
[  545.581640] Call trace:
[  545.608978] [<ffff800000089744>] dump_backtrace+0x0/0x11c
[  545.665796] [<ffff800000089874>] show_stack+0x14/0x1c
[  545.718545] [<ffff8000000d9ad4>] sched_show_task+0xa8/0xfc
[  545.775721] [<ffff800000100aa8>] rcu_check_callbacks+0x948/0x94c
[  545.838234] [<ffff800000103da4>] update_process_times+0x3c/0x6c
[  545.898821] [<ffff8000001121d4>] tick_sched_handle.isra.16+0x20/0x68
[  545.963511] [<ffff800000112260>] tick_sched_timer+0x44/0x7c
[  546.021328] [<ffff8000001044ac>] __hrtimer_run_queues+0xe8/0x14c
[  546.083981] [<ffff800000104a50>] hrtimer_interrupt+0x9c/0x1e0
[  546.143786] [<ffff800000536514>] sp804_timer_interrupt+0x2c/0x38
[  546.206882] [<ffff8000000f2c24>] handle_irq_event_percpu+0x58/0x138
[  546.272487] [<ffff8000000f2d48>] handle_irq_event+0x44/0x74
[  546.329589] [<ffff8000000f5ffc>] handle_fasteoi_irq+0xb4/0x188
[  546.389489] [<ffff8000000f2280>] generic_handle_irq+0x24/0x38
[  546.448517] [<ffff8000000f2580>] __handle_domain_irq+0x5c/0xb0
[  546.508643] [<ffff8000000824e0>] gic_handle_irq+0x5c/0xb0
[  546.564674] Exception stack(0xffff8000fb097770 to 0xffff8000fb097890)
[  546.630592] 7760:                                   ffff800000976000 ffff800000957a38
[  546.709361] 7780: ffff8000fb0978c0 ffff8000000b8dc8 0000000040000145 ffff000000021000
[  546.789258] 77a0: 0000000000000000 ffff8000009f3800 ffff8000009f3000 ffff8000009f3800
[  546.869496] 77c0: ffff8000009f3000 0000000083a6fa26 000000004dffca26 0000000061da6182
[  546.949031] 77e0: 0000000039e24b7e ffff8000fb094000 ffff8000006654c4 ffff8000006654c0
[  547.028384] 7800: 7fffffffffffffff 0000000000000116 00000000081b3200 0000000000000001
[  547.107787] 7820: 0000000000000007 000000000000000e ffff8000006b4e80 ffff800000976000
[  547.187223] 7840: ffff800000957a38 ffff8000fb0978c0 ffff8000fb0979d0 ffff800000979000
[  547.267830] 7860: ffff000000021000 000000010000ea83 ffff8000fb094000 ffff800000804690
[  547.347008] 7880: 0000000000000002 ffff8000fb0978c0
[  547.397155] [<ffff8000000855a8>] el1_irq+0x68/0xd8
[  547.446522] [<ffff8000000b917c>] irq_exit+0x84/0xdc
[  547.495952] [<ffff8000000f258c>] __handle_domain_irq+0x68/0xb0
[  547.555770] [<ffff8000000824e0>] gic_handle_irq+0x5c/0xb0
[  547.612080] Exception stack(0xffff8000fb0979a0 to 0xffff8000fb097ac0)
[  547.678708] 79a0: ffff8000fb078b00 ffff8000fffcbc80 ffff8000fb097af0 ffff80000064fadc
[  547.758717] 79c0: 0000000060000145 0000000000000001 ffff8000fffcbc80 0000000000002f6e
[  547.837868] 79e0: 00000000ff670000 0000000000000002 ffff8000fb0792a8 ffff8000fb078070
[  547.916645] 7a00: 0000000000000001 0000000002b3de36 ffff8000fb0792a0 ffff8000fb097b20
[  547.995831] 7a20: 0000000000000740 0101010101010101 0000000000000038 000000000000000e
[  548.075730] 7a40: 0000000000000007 0000000000000001 0000000000000007 000000000000000e
[  548.157084] 7a60: ffff8000006b4e80 ffff8000fb078b00 ffff8000fffcbc80 ffff80000098d228
[  548.238765] 7a80: ffff8000fb079600 ffff80000064c034 0000000000000001 ffff80000064c87c
[  548.320600] 7aa0: 0000000000000001 0000000000800711 ffff8000fb094000 ffff8000fb097af0
[  548.402741] [<ffff8000000855a8>] el1_irq+0x68/0xd8
[  548.453159] [<ffff8000000d497c>] finish_task_switch+0x8c/0x228
[  548.514562] [<ffff80000064c034>] __schedule+0x1bc/0x590
[  548.569425] [<ffff80000064c87c>] preempt_schedule_irq+0x40/0x68
[  548.632010] [<ffff800000085620>] el1_preempt+0x8/0x28
[  548.685709] [<ffff8000000b35d0>] copy_process.isra.44+0x424/0x16a8
[  548.750915] [<ffff8000000b4980>] _do_fork+0x74/0x2e8
[  548.803780] [<ffff8000000b4c40>] kernel_thread+0x34/0x3c
[  548.859987] [<ffff8000000d06a8>] kthreadd+0x108/0x180
[  548.912804] [<ffff800000085c50>] ret_from_fork+0x10/0x40
[  548.968808] rcu_preempt kthread starved for 5252 jiffies! g278 c277 f0x2 s3 ->state=0x0
[  797.990307] NET: Registered protocol family 2
[  809.746268] TCP established hash table entries: 32768 (order: 6, 262144 bytes)
[  811.058204] TCP bind hash table entries: 32768 (order: 7, 524288 bytes)
[  814.178297] TCP: Hash tables configured (established 32768 bind 32768)
[  814.542374] UDP hash table entries: 2048 (order: 4, 65536 bytes)
[  817.545752] UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes)
[  818.946271] NET: Registered protocol family 1
[  834.630347] RPC: Registered named UNIX socket transport module.
[  835.266412] RPC: Registered udp transport module.
[  836.714509] RPC: Registered tcp transport module.
[  838.906519] RPC: Registered tcp NFSv4.1 backchannel transport module.
[  841.914516] kvm [1]: HYP mode not available
[  904.058163] nest-tests successfully initialized
[  941.742147] futex hash table entries: 256 (order: 3, 32768 bytes)
[  942.850203] audit: initializing netlink subsys (disabled)
[  947.394146] audit: type=2000 audit(942.852:1): initialized
[  973.694200] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[ 1154.279424] kvm [1537]: fault_ipa: faa00000
[ 1154.280151] kvm [1537]: pfn: f5c00
[ 1265.120752] INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 1265.180290] 	(detected by 0, t=5252 jiffies, g=587, c=586, q=1)
[ 1265.242231] All QSes seen, last rcu_preempt kthread activity 5252 (4295207441-4295202189), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 1265.364549] kworker/u2:3    D ffff800000086c80     0   492      2 0x00000002
[ 1265.440971] Call trace:
[ 1265.466941] [<ffff800000089744>] dump_backtrace+0x0/0x11c
[ 1265.523143] [<ffff800000089874>] show_stack+0x14/0x1c
[ 1265.575987] [<ffff8000000d9ad4>] sched_show_task+0xa8/0xfc
[ 1265.633568] [<ffff800000100aa8>] rcu_check_callbacks+0x948/0x94c
[ 1265.695385] [<ffff800000103da4>] update_process_times+0x3c/0x6c
[ 1265.756584] [<ffff8000001121d4>] tick_sched_handle.isra.16+0x20/0x68
[ 1265.823678] [<ffff800000112260>] tick_sched_timer+0x44/0x7c
[ 1265.882495] [<ffff8000001044ac>] __hrtimer_run_queues+0xe8/0x14c
[ 1265.943754] [<ffff800000104a50>] hrtimer_interrupt+0x9c/0x1e0
[ 1266.003754] [<ffff800000536514>] sp804_timer_interrupt+0x2c/0x38
[ 1266.067097] [<ffff8000000f2c24>] handle_irq_event_percpu+0x58/0x138
[ 1266.132761] [<ffff8000000f2d48>] handle_irq_event+0x44/0x74
[ 1266.189685] [<ffff8000000f5ffc>] handle_fasteoi_irq+0xb4/0x188
[ 1266.250838] [<ffff8000000f2280>] generic_handle_irq+0x24/0x38
[ 1266.311070] [<ffff8000000f2580>] __handle_domain_irq+0x5c/0xb0
[ 1266.371944] [<ffff8000000824e0>] gic_handle_irq+0x5c/0xb0
[ 1266.429133] Exception stack(0xffff8000ba9db990 to 0xffff8000ba9dbab0)
[ 1266.495926] b980:                                   ffff800000976000 ffff800000957a38
[ 1266.576749] b9a0: ffff8000ba9dbae0 ffff8000000b8dc8 0000000040000145 ffff000000021000
[ 1266.657346] b9c0: 0000000000000000 ffff8000009f3800 ffff8000009f3000 ffff8000009f3800
[ 1266.738253] b9e0: ffff8000009f3000 00000000f33cfb15 00000000805012e7 000000005e6bca40
[ 1266.819045] ba00: 0000000069922148 ffff8000ba9d8000 ffff8000006654c4 ffff8000006654c0
[ 1266.899071] ba20: 7fffffffffffffff 000000000000024b 000000000fbc5200 0000000000000001
[ 1266.979754] ba40: 0000000000000007 000000000000000e ffff8000006b4e80 ffff800000976000
[ 1267.060841] ba60: ffff800000957a38 ffff8000ba9dbae0 ffff8000ba9dbbf0 ffff800000979000
[ 1267.142497] ba80: ffff000000021000 000000010003a9c3 ffff8000ba9d8000 ffff800000804690
[ 1267.222493] baa0: 0000000000000002 ffff8000ba9dbae0
[ 1267.273479] [<ffff8000000855a8>] el1_irq+0x68/0xd8
[ 1267.324427] [<ffff8000000b917c>] irq_exit+0x84/0xdc
[ 1267.375698] [<ffff8000000f258c>] __handle_domain_irq+0x68/0xb0
[ 1267.436013] [<ffff8000000824e0>] gic_handle_irq+0x5c/0xb0
[ 1267.492819] Exception stack(0xffff8000ba9dbbc0 to 0xffff8000ba9dbce0)
[ 1267.559784] bbc0: ffff8000fb0de300 ffff8000fffcbc80 ffff8000ba9dbd10 ffff80000064fadc
[ 1267.640688] bbe0: 0000000060000145 0000000000000000 ffff8000fffcbc80 00000000000007db
[ 1267.721550] bc00: 00000000ff670000 0000000000000002 ffff8000fb0deaa8 ffff8000fb161670
[ 1267.803016] bc20: ffff800000665618 ffff8000fffcbd10 ffff8000fb0deaa0 ffff8000ba9dbd40
[ 1267.883967] bc40: 0000000000000740 000000000000001a 0000000000000013 000000000000000e
[ 1267.964681] bc60: 0000000000000007 0000000000000001 0000000000000007 000000000000000e
[ 1268.046768] bc80: ffff8000006b4e80 ffff8000fb0de300 ffff8000fffcbc80 ffff80000098d228
[ 1268.127635] bca0: ffff8000fb161600 ffff80000064c034 0000000000000000 ffff80000064c6a0
[ 1268.208570] bcc0: 0000000000000001 0000000000000000 0000000000000000 ffff8000ba9dbd10
[ 1268.289389] [<ffff8000000855a8>] el1_irq+0x68/0xd8
[ 1268.339900] [<ffff8000000d497c>] finish_task_switch+0x8c/0x228
[ 1268.400625] [<ffff80000064c034>] __schedule+0x1bc/0x590
[ 1268.454519] [<ffff80000064c6a0>] preempt_schedule_common+0x28/0x48
[ 1268.519046] [<ffff80000064c6ec>] preempt_schedule+0x2c/0x30
[ 1268.577276] [<ffff80000064fabc>] _raw_spin_unlock_irqrestore+0x3c/0x44
[ 1268.644757] [<ffff8000000e90c8>] complete+0x4c/0x5c
[ 1268.695210] [<ffff8000000cff20>] kthread+0xb8/0xf4
[ 1268.746194] [<ffff800000085c50>] ret_from_fork+0x10/0x40
[ 1268.802254] rcu_preempt kthread starved for 5252 jiffies! g587 c586 f0x2 s3 ->state=0x0