rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10377 ticks this GP) idle=0aa/1/0x4000000000000000 softirq=21037/21040 fqs=1 
	(t=10500 jiffies g=29729 q=14)
rcu: rcu_preempt kthread starved for 10496 jiffies! g29729 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:29176 pid:   13 ppid:     2 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:4327 [inline]
 __schedule+0x90c/0x21a0 kernel/sched/core.c:5078
 schedule+0xcf/0x270 kernel/sched/core.c:5157
 schedule_timeout+0x148/0x250 kernel/time/timer.c:1878
 rcu_gp_fqs_loop kernel/rcu/tree.c:1940 [inline]
 rcu_gp_kthread+0xbbe/0x1d70 kernel/rcu/tree.c:2113
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
NMI backtrace for cpu 0
CPU: 0 PID: 13685 Comm: syz-executor.0 Not tainted 5.11.0-rc5-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:79 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:120
 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+0x1f4/0x230 kernel/rcu/tree_stall.h:337
 print_cpu_stall kernel/rcu/tree_stall.h:569 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:643 [inline]
 rcu_pending kernel/rcu/tree.c:3751 [inline]
 rcu_sched_clock_irq.cold+0x48e/0xedf kernel/rcu/tree.c:2580
 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:1369
 __run_hrtimer kernel/time/hrtimer.c:1519 [inline]
 __hrtimer_run_queues+0x1c0/0xe40 kernel/time/hrtimer.c:1583
 hrtimer_interrupt+0x334/0x940 kernel/time/hrtimer.c:1645
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1102
 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline]
 sysvec_apic_timer_interrupt+0x48/0x100 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628
RIP: 0010:mac80211_hwsim_beacon_tx+0x46f/0x910 drivers/net/wireless/mac80211_hwsim.c:1760
Code: 8b b4 24 c0 02 00 00 e8 ef 2a e4 03 31 ff 41 89 c5 89 c6 e8 83 2e 5d fc 45 85 ed 74 20 e8 f9 26 5d fc 44 0f b6 2d f5 b4 d9 07 <31> ff 44 89 ee e8 67 2d 5d fc 45 84 ed 0f 84 64 02 00 00 e8 d9 26
RSP: 0018:ffffc90000007d40 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88803fbb0c80 RCX: 0000000000000100
RDX: ffff888018ca1bc0 RSI: ffffffff85159a57 RDI: 0000000000000003
RBP: ffff888024b36dc0 R08: 0000000000000000 R09: 0000000000000080
R10: ffffffff85159a4d R11: 000000000000001c R12: ffff88803b301dd8
R13: 0000000000000000 R14: ffff88814122a258 R15: ffff88802583bc50
 __iterate_interfaces+0x1e5/0x520 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0xd5/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1782
 __run_hrtimer kernel/time/hrtimer.c:1519 [inline]
 __hrtimer_run_queues+0x609/0xe40 kernel/time/hrtimer.c:1583
 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1600
 __do_softirq+0x2bc/0xa29 kernel/softirq.c:343
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:226 [inline]
 __irq_exit_rcu kernel/softirq.c:420 [inline]
 irq_exit_rcu+0x134/0x200 kernel/softirq.c:432
 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628
RIP: 0010:hash_64_generic include/linux/hash.h:81 [inline]
RIP: 0010:hash_ptr include/linux/hash.h:90 [inline]
RIP: 0010:pv_unhash kernel/locking/qspinlock_paravirt.h:241 [inline]
RIP: 0010:__pv_queued_spin_unlock_slowpath+0x48/0x2b0 kernel/locking/qspinlock_paravirt.h:517
Code: de 5e aa 0b b9 40 00 00 00 49 be eb 83 b5 80 46 86 c8 61 4c 0f af f7 44 29 e1 83 f9 3f 0f 87 73 3a 60 07 4c 8b 05 18 87 ae 0d <49> d3 ee 31 ed 49 bf 00 00 00 00 00 fc ff df 41 83 e6 fc 4c 89 f3
RSP: 0018:ffffc900021dfba8 EFLAGS: 00000297
RAX: 0000000000000003 RBX: 1ffff9200043bf96 RCX: 0000000000000038
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8880161e7208
RBP: ffff8880161e7208 R08: ffff88823ffe6000 R09: ffff8880161e720b
R10: ffffed1002c3ce41 R11: 0000000000000001 R12: 0000000000000008
R13: ffff8880161e7208 R14: 6a4e13a081f4c558 R15: ffff88801528c000
 __raw_callee_save___pv_queued_spin_unlock_slowpath+0x11/0x20
 .slowpath+0x9/0xe
 pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:559 [inline]
 queued_spin_unlock arch/x86/include/asm/qspinlock.h:56 [inline]
 do_raw_spin_unlock+0x171/0x230 kernel/locking/spinlock_debug.c:139
 __raw_spin_unlock include/linux/spinlock_api_smp.h:151 [inline]
 _raw_spin_unlock+0x1a/0x40 kernel/locking/spinlock.c:183
 spin_unlock include/linux/spinlock.h:394 [inline]
 d_instantiate+0x75/0x90 fs/dcache.c:1983
 alloc_file_pseudo+0x151/0x250 fs/file_table.c:231
 anon_inode_getfile fs/anon_inodes.c:91 [inline]
 anon_inode_getfile+0xc8/0x1f0 fs/anon_inodes.c:74
 __do_sys_perf_event_open+0x109a/0x2e60 kernel/events/core.c:11953
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f74a3992c68 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 000000002001d000
RBP: 000000000119bfd0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007fff8ee24a6f R14: 00007f74a39939c0 R15: 000000000119bf8c