rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10469 ticks this GP) idle=e36/1/0x4000000000000000 softirq=210910/210914 fqs=11 
	(t=10501 jiffies g=410657 q=123)
rcu: rcu_preempt kthread starved for 10461 jiffies! g410657 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:28864 pid:   14 ppid:     2 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:4683 [inline]
 __schedule+0x93a/0x26f0 kernel/sched/core.c:5940
 schedule+0xd3/0x270 kernel/sched/core.c:6019
 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1878
 rcu_gp_fqs_loop kernel/rcu/tree.c:1996 [inline]
 rcu_gp_kthread+0xd34/0x1980 kernel/rcu/tree.c:2169
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 18464 Comm: syz-executor.3 Not tainted 5.14.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105
 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_check_gp_kthread_starvation.cold+0x1d1/0x1d6 kernel/rcu/tree_stall.h:479
 print_cpu_stall kernel/rcu/tree_stall.h:623 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:700 [inline]
 rcu_pending kernel/rcu/tree.c:3922 [inline]
 rcu_sched_clock_irq.cold+0x9a/0x747 kernel/rcu/tree.c:2641
 update_process_times+0x16d/0x200 kernel/time/timer.c:1782
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1421
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1601
 hrtimer_interrupt+0x330/0xa00 kernel/time/hrtimer.c:1663
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1106
 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__ieee80211_rx_handle_packet net/mac80211/rx.c:4679 [inline]
RIP: 0010:ieee80211_rx_list+0x128c/0x27d0 net/mac80211/rx.c:4900
Code: 7c 08 84 d2 0f 85 38 12 00 00 41 0f b7 0c 24 4c 8d b4 24 e8 00 00 00 31 f6 ba 48 00 00 00 4c 89 f7 89 4c 24 08 e8 74 ef 37 f9 <8b> 4c 24 08 48 8b 44 24 10 48 89 ac 24 f0 00 00 00 4c 89 bc 24 f8
RSP: 0018:ffffc90000007c90 EFLAGS: 00000202
RAX: ffffc90000007d78 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000048 RSI: 0000000000000000 RDI: ffffc90000007dc0
RBP: ffff8880ae8d0c80 R08: 0000000000000001 R09: ffffc90000007d78
R10: fffff52000000fb7 R11: 0000000000000008 R12: ffff8880a67b8450
R13: ffff8880ae8d0cf0 R14: ffffc90000007d78 R15: ffff888066648d20
 ieee80211_rx_napi+0xdb/0x3d0 net/mac80211/rx.c:4923
 ieee80211_rx include/net/mac80211.h:4552 [inline]
 ieee80211_tasklet_handler+0xd4/0x130 net/mac80211/main.c:235
 tasklet_action_common.constprop.0+0x201/0x2e0 kernel/softirq.c:783
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:preempt_schedule_irq+0x49/0x90 kernel/sched/core.c:6328
Code: 55 53 65 48 8b 1c 25 00 f0 01 00 48 89 dd 48 c1 ed 03 48 01 c5 bf 01 00 00 00 e8 62 f8 23 f8 e8 bd 3f 50 f8 fb bf 01 00 00 00 <e8> d2 cd ff ff 9c 58 fa f6 c4 02 75 27 bf 01 00 00 00 e8 70 e7 23
RSP: 0018:ffffc9000175fbc8 EFLAGS: 00000206
RAX: 0000000000002721 RBX: ffff8880870cb880 RCX: 1ffffffff1fa1a9a
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffed1010e19710 R08: 0000000000000001 R09: ffffffff8fcd193f
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 irqentry_exit+0x31/0x80 kernel/entry/common.c:427
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__local_bh_enable_ip+0xa8/0x120 kernel/softirq.c:390
Code: 1d 5d c5 bb 7e 65 8b 05 56 c5 bb 7e a9 00 ff ff 00 74 45 bf 01 00 00 00 e8 b5 29 09 00 e8 e0 81 35 00 fb 65 8b 05 38 c5 bb 7e <85> c0 74 58 5b 5d c3 65 8b 05 86 cc bb 7e 85 c0 75 a2 0f 0b eb 9e
RSP: 0018:ffffc9000175fc98 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 00000000fffffe00 RCX: 1ffffffff1fa1a9a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffffff88523135 R08: 0000000000000001 R09: ffffffff8fcd193f
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888097510080
R13: ffff88802924dd88 R14: ffff888097510088 R15: ffff88809241cd38
 spin_unlock_bh include/linux/spinlock.h:399 [inline]
 sctp_close+0x4e5/0x930 net/sctp/socket.c:1550
 inet_release+0x12e/0x280 net/ipv4/af_inet.c:431
 inet6_release+0x4c/0x70 net/ipv6/af_inet6.c:478
 __sock_release+0xcd/0x280 net/socket.c:648
 sock_close+0x18/0x20 net/socket.c:1300
 __fput+0x288/0x920 fs/file_table.c:280
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
 exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:209
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcf635b9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffdef2cf5cf R14: 00007fcf635b9300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 18464 Comm: syz-executor.3 Not tainted 5.14.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105
 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:342
 print_cpu_stall kernel/rcu/tree_stall.h:625 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:700 [inline]
 rcu_pending kernel/rcu/tree.c:3922 [inline]
 rcu_sched_clock_irq.cold+0x9f/0x747 kernel/rcu/tree.c:2641
 update_process_times+0x16d/0x200 kernel/time/timer.c:1782
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1421
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1601
 hrtimer_interrupt+0x330/0xa00 kernel/time/hrtimer.c:1663
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1106
 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__ieee80211_rx_handle_packet net/mac80211/rx.c:4679 [inline]
RIP: 0010:ieee80211_rx_list+0x128c/0x27d0 net/mac80211/rx.c:4900
Code: 7c 08 84 d2 0f 85 38 12 00 00 41 0f b7 0c 24 4c 8d b4 24 e8 00 00 00 31 f6 ba 48 00 00 00 4c 89 f7 89 4c 24 08 e8 74 ef 37 f9 <8b> 4c 24 08 48 8b 44 24 10 48 89 ac 24 f0 00 00 00 4c 89 bc 24 f8
RSP: 0018:ffffc90000007c90 EFLAGS: 00000202
RAX: ffffc90000007d78 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000048 RSI: 0000000000000000 RDI: ffffc90000007dc0
RBP: ffff8880ae8d0c80 R08: 0000000000000001 R09: ffffc90000007d78
R10: fffff52000000fb7 R11: 0000000000000008 R12: ffff8880a67b8450
R13: ffff8880ae8d0cf0 R14: ffffc90000007d78 R15: ffff888066648d20
 ieee80211_rx_napi+0xdb/0x3d0 net/mac80211/rx.c:4923
 ieee80211_rx include/net/mac80211.h:4552 [inline]
 ieee80211_tasklet_handler+0xd4/0x130 net/mac80211/main.c:235
 tasklet_action_common.constprop.0+0x201/0x2e0 kernel/softirq.c:783
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:preempt_schedule_irq+0x49/0x90 kernel/sched/core.c:6328
Code: 55 53 65 48 8b 1c 25 00 f0 01 00 48 89 dd 48 c1 ed 03 48 01 c5 bf 01 00 00 00 e8 62 f8 23 f8 e8 bd 3f 50 f8 fb bf 01 00 00 00 <e8> d2 cd ff ff 9c 58 fa f6 c4 02 75 27 bf 01 00 00 00 e8 70 e7 23
RSP: 0018:ffffc9000175fbc8 EFLAGS: 00000206
RAX: 0000000000002721 RBX: ffff8880870cb880 RCX: 1ffffffff1fa1a9a
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffed1010e19710 R08: 0000000000000001 R09: ffffffff8fcd193f
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 irqentry_exit+0x31/0x80 kernel/entry/common.c:427
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__local_bh_enable_ip+0xa8/0x120 kernel/softirq.c:390
Code: 1d 5d c5 bb 7e 65 8b 05 56 c5 bb 7e a9 00 ff ff 00 74 45 bf 01 00 00 00 e8 b5 29 09 00 e8 e0 81 35 00 fb 65 8b 05 38 c5 bb 7e <85> c0 74 58 5b 5d c3 65 8b 05 86 cc bb 7e 85 c0 75 a2 0f 0b eb 9e
RSP: 0018:ffffc9000175fc98 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 00000000fffffe00 RCX: 1ffffffff1fa1a9a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffffff88523135 R08: 0000000000000001 R09: ffffffff8fcd193f
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888097510080
R13: ffff88802924dd88 R14: ffff888097510088 R15: ffff88809241cd38
 spin_unlock_bh include/linux/spinlock.h:399 [inline]
 sctp_close+0x4e5/0x930 net/sctp/socket.c:1550
 inet_release+0x12e/0x280 net/ipv4/af_inet.c:431
 inet6_release+0x4c/0x70 net/ipv6/af_inet6.c:478
 __sock_release+0xcd/0x280 net/socket.c:648
 sock_close+0x18/0x20 net/socket.c:1300
 __fput+0x288/0x920 fs/file_table.c:280
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
 exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:209
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcf635b9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffdef2cf5cf R14: 00007fcf635b9300 R15: 0000000000022000