rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5201/1:b..l P22/1:b..l P5202/2:b..l P41/2:b..l
rcu: (detected by 0, t=10502 jiffies, g=56997, q=99 ncpus=2)
task:kworker/u4:2 state:R running task stack:25776 pid:41 ppid:2 flags:0x00004000
Workqueue: phy7 ieee80211_iface_work
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xc91/0x57d0 kernel/sched/core.c:6622
preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:6934
irqentry_exit+0x35/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:memcmp+0x92/0x1c0 lib/string.c:692
Code: 0f b6 04 30 38 d0 7f 08 84 c0 0f 85 24 01 00 00 48 89 da 48 89 d9 0f b6 45 00 48 c1 ea 03 83 e1 07 42 0f b6 14 32 38 ca 7f 08 <84> d2 0f 85 ed 00 00 00 0f b6 13 29 d0 74 a4 48 83 c4 08 5b 5d 41
RSP: 0018:ffffc90000b277e0 EFLAGS: 00000297
RAX: 0000000000000011 RBX: ffff888070a0d85c RCX: 0000000000000004
RDX: 0000000000000000 RSI: ffff888070a0d85a RDI: ffff88807c2c0040
RBP: ffff88807c2c0042 R08: 0000000000000006 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000094001 R12: ffff88807c2c0040
R13: 0000000000000006 R14: dffffc0000000000 R15: ffffc90000b278d8
memcmp include/linux/fortify-string.h:665 [inline]
rhashtable_compare include/linux/rhashtable.h:585 [inline]
__rhashtable_lookup+0x617/0x7e0 include/linux/rhashtable.h:610
rhltable_lookup include/linux/rhashtable.h:696 [inline]
sta_info_hash_lookup net/mac80211/sta_info.c:193 [inline]
sta_info_get+0x128/0x3e0 net/mac80211/sta_info.c:205
ieee80211_update_sta_info net/mac80211/ibss.c:1000 [inline]
ieee80211_rx_bss_info net/mac80211/ibss.c:1118 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1087/0x3200 net/mac80211/ibss.c:1638
ieee80211_iface_process_skb net/mac80211/iface.c:1583 [inline]
ieee80211_iface_work+0xa4d/0xd70 net/mac80211/iface.c:1637
process_one_work+0x991/0x1710 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
task:kworker/u4:7 state:R running task stack:26376 pid:5202 ppid:2 flags:0x00004000
Workqueue: phy13 ieee80211_iface_work
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xc91/0x57d0 kernel/sched/core.c:6622
preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:6934
irqentry_exit+0x35/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:sta_info_hash_lookup net/mac80211/sta_info.c:193 [inline]
RIP: 0010:sta_info_get+0xc8/0x3e0 net/mac80211/sta_info.c:205
Code: 68 8e 0b 86 89 48 c7 c7 00 60 79 8c e8 f1 69 df f7 e8 3c 7e 88 00 31 ff 89 c3 89 c6 e8 11 c6 fd f7 85 db 58 0f 85 71 01 00 00 b3 c9 fd f7 48 8b 35 14 94 f7 01 49 8d be b0 09 00 00 48 8b 05
RSP: 0018:ffffc900046c79c8 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff89860d5e
RDX: ffff888026798000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 1ffff920008d8f39 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000094001 R12: ffff888028bd4c5a
R13: ffff88807608cc80 R14: ffff88807d768de0 R15: 000000000000004c
ieee80211_update_sta_info net/mac80211/ibss.c:1000 [inline]
ieee80211_rx_bss_info net/mac80211/ibss.c:1118 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1087/0x3200 net/mac80211/ibss.c:1638
ieee80211_iface_process_skb net/mac80211/iface.c:1583 [inline]
ieee80211_iface_work+0xa4d/0xd70 net/mac80211/iface.c:1637
process_one_work+0x991/0x1710 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
task:kworker/1:0 state:R running task stack:27232 pid:22 ppid:2 flags:0x00004000
Workqueue: events_power_efficient gc_worker
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xc91/0x57d0 kernel/sched/core.c:6622
preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:6934
irqentry_exit+0x35/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0x1f3/0x5b0 kernel/locking/lockdep.c:5637
Code: 11 9d 7e 83 f8 01 0f 85 24 03 00 00 9c 58 f6 c4 02 0f 85 37 03 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc900001c7b28 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000038f67 RCX: e1711c32be06fdc4
RDX: 1ffff11002e58896 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff914d6b87
R10: fffffbfff229ad70 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8c796000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:327 [inline]
rcu_read_lock include/linux/rcupdate.h:773 [inline]
gc_worker+0x242/0x1790 net/netfilter/nf_conntrack_core.c:1495
process_one_work+0x991/0x1710 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
task:kworker/u4:6 state:R running task stack:26760 pid:5201 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xc91/0x57d0 kernel/sched/core.c:6622
preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:6934
irqentry_exit+0x35/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0x1f3/0x5b0 kernel/locking/lockdep.c:5637
Code: 11 9d 7e 83 f8 01 0f 85 24 03 00 00 9c 58 f6 c4 02 0f 85 37 03 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0000:ffffc900046b7b98 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920008d6f75 RCX: 3e32b3f597131e49
RDX: 1ffff11003d92c3e RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff914d6b87
R10: fffffbfff229ad70 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8c796000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:327 [inline]
rcu_read_lock include/linux/rcupdate.h:773 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x131/0xfe0 net/batman-adv/network-coding.c:719
process_one_work+0x991/0x1710 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
rcu: rcu_preempt kthread starved for 9759 jiffies! g56997 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:28368 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xc91/0x57d0 kernel/sched/core.c:6622
schedule+0xde/0x1a0 kernel/sched/core.c:6698
schedule_timeout+0x14e/0x2b0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1608
rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1807
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
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:86 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x40/0x50 drivers/acpi/processor_idle.c:112