rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6377/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=26045, q=644 ncpus=2)
task:kworker/u8:13   state:R  running task     stack:24544 pid:6377  tgid:6377  ppid:2      flags:0x00004000
Workqueue: events_unbound cfg80211_wiphy_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xe37/0x5490 kernel/sched/core.c:6529
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:ieee80211_sta_get_rates+0x325/0x650 net/mac80211/util.c:1552
Code: 0f 83 fc 00 00 00 e8 9a 4f fd f6 48 8b 44 24 10 80 38 00 0f 85 55 02 00 00 48 8b 74 24 08 48 8d 04 5b 48 8b 56 08 4c 8d 34 82 <4c> 89 f2 48 c1 ea 03 42 0f b6 0c 2a 4c 89 f2 83 e2 07 83 c2 03 38
RSP: 0018:ffffc900039bf950 EFLAGS: 00000246
RAX: 0000000000000018 RBX: 0000000000000008 RCX: ffffffff8a8d2c08
RDX: ffff88801f9b5c38 RSI: ffff88801f9b30c8 RDI: 0000000000000006
RBP: 0000000000000008 R08: 0000000000000006 R09: 0000000000000008
R10: 000000000000000c R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88801f9b5c98 R15: 000000000000003c
 ieee80211_update_sta_info net/mac80211/ibss.c:989 [inline]
 ieee80211_rx_bss_info net/mac80211/ibss.c:1098 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1579 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x1039/0x2f40 net/mac80211/ibss.c:1606
 ieee80211_iface_process_skb net/mac80211/iface.c:1588 [inline]
 ieee80211_iface_work+0xc0b/0xf00 net/mac80211/iface.c:1642
 cfg80211_wiphy_work+0x445/0x760 net/wireless/core.c:440
 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: rcu_preempt kthread starved for 10220 jiffies! g26045 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:27680 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xe37/0x5490 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6621
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2034
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2236
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:111