rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10499 ticks this GP) idle=70a/1/0x4000000000000000 softirq=17719/17726 fqs=1 
	(t=10500 jiffies g=25685 q=68)
rcu: rcu_preempt kthread starved for 10497 jiffies! g25685 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:29032 pid:   14 ppid:     2 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:4339 [inline]
 __schedule+0x916/0x23e0 kernel/sched/core.c:5147
 schedule+0xcf/0x270 kernel/sched/core.c:5226
 schedule_timeout+0x14a/0x250 kernel/time/timer.c:1892
 rcu_gp_fqs_loop kernel/rcu/tree.c:2004 [inline]
 rcu_gp_kthread+0xd07/0x2300 kernel/rcu/tree.c:2177
 kthread+0x3b1/0x4a0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 10251 Comm: syz-executor.2 Not tainted 5.13.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__this_cpu_preempt_check+0xc/0x20 lib/smp_processor_id.c:71
Code: 44 00 00 48 c7 c6 40 61 c2 89 48 c7 c7 80 61 c2 89 e9 98 fe ff ff 0f 1f 84 00 00 00 00 00 55 48 89 fd 0f 1f 44 00 00 48 89 ee <5d> 48 c7 c7 c0 61 c2 89 e9 77 fe ff ff cc cc cc cc cc cc cc eb 1e
RSP: 0018:ffffc90000dd8ab0 EFLAGS: 00000086
RAX: 0000000000000001 RBX: 1ffff920001bb15a RCX: ffffffff81596bc7
RDX: 1ffff1100d3f9546 RSI: ffffffff896b9e00 RDI: ffffffff896b9e00
RBP: ffffffff896b9e00 R08: 0000000000000000 R09: ffffffff9022c8af
R10: fffffbfff2045915 R11: 0000000000000000 R12: 0000000000000002
R13: ffffffff8bf95a48 R14: 0000000000000000 R15: 0000000000000000
FS:  000000000250d400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f471d3a7718 CR3: 000000005b790000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lockdep_recursion_finish kernel/locking/lockdep.c:438 [inline]
 lock_acquire kernel/locking/lockdep.c:5514 [inline]
 lock_acquire+0x1bb/0x740 kernel/locking/lockdep.c:5477
 seqcount_lockdep_reader_access include/linux/seqlock.h:103 [inline]
 ktime_get+0x7c/0x470 kernel/time/timekeeping.c:827
 hrtimer_forward_now include/linux/hrtimer.h:510 [inline]
 perf_swevent_hrtimer+0x246/0x3f0 kernel/events/core.c:10540
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x1c0/0xe40 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+0x146/0x540 arch/x86/kernel/apic/apic.c:1106
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x3ba/0xb40 kernel/locking/qspinlock.c:508
Code: eb c6 45 01 01 41 bc 00 80 00 00 48 c1 e9 03 83 e3 07 41 be 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8d 2c 01 eb 0c f3 90 <41> 83 ec 01 0f 84 72 04 00 00 41 0f b6 45 00 38 d8 7f 08 84 c0 0f
RSP: 0018:ffffc900023af768 EFLAGS: 00000206
RAX: 0000000000000003 RBX: 0000000000000000 RCX: 1ffffffff1811f58
RDX: 0000000000000001 RSI: ffffffff817a21a1 RDI: ffffffff8132b581
RBP: ffffffff8c08fac0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817a2169 R11: 0000000000084087 R12: 000000000000726c
R13: fffffbfff1811f58 R14: 0000000000000001 R15: ffff8880b9d36500
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock+0x200/0x2b0 kernel/locking/spinlock_debug.c:113
 spin_lock include/linux/spinlock.h:354 [inline]
 preload_this_cpu_lock mm/vmalloc.c:1450 [inline]
 alloc_vmap_area+0x1ba/0x1e10 mm/vmalloc.c:1491
 __get_vm_area_node+0x128/0x380 mm/vmalloc.c:2370
 __vmalloc_node_range+0x135/0x970 mm/vmalloc.c:2906
 alloc_thread_stack_node kernel/fork.c:245 [inline]
 dup_task_struct kernel/fork.c:869 [inline]
 copy_process+0x8de/0x7120 kernel/fork.c:1947
 kernel_clone+0xe7/0xab0 kernel/fork.c:2503
 __do_sys_clone+0xc8/0x110 kernel/fork.c:2620
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x467a01
Code: 48 85 ff 74 3d 48 85 f6 74 38 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 7c 13 74 01 c3 31 ed 58 5f ff d0 48 89 c7 b8 3c 00 00 00
RSP: 002b:00007ffce877a7a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f471d3a7700 RCX: 0000000000467a01
RDX: 00007f471d3a79d0 RSI: 00007f471d3a72f0 RDI: 00000000003d0f00
RBP: 00007ffce877a9e0 R08: 00007f471d3a7700 R09: 00007f471d3a7700
R10: 00007f471d3a79d0 R11: 0000000000000206 R12: 00007ffce877a85e
R13: 00007ffce877a85f R14: 00007f471d3a7300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 10161 Comm: syz-executor.5 Not tainted 5.13.0-rc6-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+0x141/0x1d7 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+0x25e/0x3f0 kernel/rcu/tree_stall.h:341
 print_cpu_stall kernel/rcu/tree_stall.h:624 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:699 [inline]
 rcu_pending kernel/rcu/tree.c:3911 [inline]
 rcu_sched_clock_irq.cold+0x3f1/0x74b kernel/rcu/tree.c:2649
 update_process_times+0x16d/0x200 kernel/time/timer.c:1796
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1374
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x1c0/0xe40 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+0x146/0x540 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:647
RIP: 0010:filter_irq_stacks+0xb/0x50 lib/stackdepot.c:359
Code: db 28 d1 fd e9 bd fe ff ff 4c 89 ef e8 4e 28 d1 fd e9 8d fe ff ff cc cc cc cc cc cc cc cc cc 85 f6 89 f1 74 3f 41 89 f0 31 c0 <48> 8b 14 c7 89 c6 48 81 fa 00 01 20 89 72 0d 48 81 fa d0 0d 20 89
RSP: 0018:ffffc90000007880 EFLAGS: 00000202
RAX: 0000000000000008 RBX: ffff888017e4d340 RCX: 000000000000002e
RDX: ffffffff852892ba RSI: 0000000000000007 RDI: ffffc90000007888
RBP: ffff888017e4d428 R08: 000000000000002e R09: 0000000000000001
R10: fffff52000000ef7 R11: 0000000000084087 R12: 0000000000000a20
R13: 0000000000000a20 R14: 0000000000000a20 R15: 0000000000000001
 kasan_save_stack+0x25/0x40 mm/kasan/common.c:39
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:428 [inline]
 __kasan_slab_alloc+0x81/0xa0 mm/kasan/common.c:461
 kasan_slab_alloc include/linux/kasan.h:236 [inline]
 slab_post_alloc_hook mm/slab.h:524 [inline]
 slab_alloc_node mm/slab.c:3261 [inline]
 kmem_cache_alloc_node+0x333/0x590 mm/slab.c:3599
 __alloc_skb+0x20b/0x340 net/core/skbuff.c:413
 skb_copy+0x137/0x2f0 net/core/skbuff.c:1562
 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb17/0x1330 drivers/net/wireless/mac80211_hwsim.c:1563
 mac80211_hwsim_tx_frame+0x14f/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1775
 mac80211_hwsim_beacon_tx+0x4ba/0x910 drivers/net/wireless/mac80211_hwsim.c:1829
 __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:1852
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x609/0xe40 kernel/time/hrtimer.c:1601
 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1618
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559
 invoke_softirq kernel/softirq.c:433 [inline]
 __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 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:647
RIP: 0010:stack_trace_consume_entry+0xa/0x160 kernel/stacktrace.c:82
Code: e8 2b 71 11 00 48 c7 c1 e0 6f 6d 89 31 d2 be 80 01 00 00 48 c7 c7 e0 6d 6d 89 e9 a1 40 8a 00 cc 48 b8 00 00 00 00 00 fc ff df <55> 53 48 89 fb 48 83 c7 10 48 89 fa 48 83 ec 08 48 c1 ea 03 0f b6
RSP: 0018:ffffc900018f7480 EFLAGS: 00000286
RAX: dffffc0000000000 RBX: ffffffff81629fc0 RCX: 0000000000000000
RDX: 1ffff9200031ee9a RSI: ffffffff81ae6e22 RDI: ffffc900018f7540
RBP: ffffc900018f7510 R08: ffffffff8e4c9702 R09: 0000000000000001
R10: fffff5200031ee9c R11: 0000000000084087 R12: ffffc900018f7540
R13: 0000000000000000 R14: ffff8880683e00c0 R15: 00000047a56db40e
 arch_stack_walk+0x6d/0xe0 arch/x86/kernel/stacktrace.c:27
 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121
 save_stack+0x151/0x1e0 mm/page_owner.c:119
 __reset_page_owner+0x5d/0x170 mm/page_owner.c:140
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1298 [inline]
 free_pcp_prepare+0x223/0x300 mm/page_alloc.c:1342
 free_unref_page_prepare mm/page_alloc.c:3250 [inline]
 free_unref_page+0x12/0x1d0 mm/page_alloc.c:3298
 kasan_depopulate_vmalloc_pte+0x5c/0x70 mm/kasan/shadow.c:369
 apply_to_pte_range mm/memory.c:2425 [inline]
 apply_to_pmd_range mm/memory.c:2469 [inline]
 apply_to_pud_range mm/memory.c:2505 [inline]
 apply_to_p4d_range mm/memory.c:2541 [inline]
 __apply_to_page_range+0x69a/0x1050 mm/memory.c:2575
 kasan_release_vmalloc+0xa7/0xc0 mm/kasan/shadow.c:479
 __purge_vmap_area_lazy+0x8f9/0x1c50 mm/vmalloc.c:1652
 try_purge_vmap_area_lazy mm/vmalloc.c:1671 [inline]
 free_vmap_area_noflush+0xa57/0xd00 mm/vmalloc.c:1713
 free_unmap_vmap_area mm/vmalloc.c:1726 [inline]
 remove_vm_area+0x1cc/0x230 mm/vmalloc.c:2462
 vm_remove_mappings mm/vmalloc.c:2491 [inline]
 __vunmap+0x392/0xb60 mm/vmalloc.c:2556
 __vfree+0x3c/0xd0 mm/vmalloc.c:2613
 vfree+0x5a/0x90 mm/vmalloc.c:2644
 kcov_put kernel/kcov.c:408 [inline]
 kcov_put+0x26/0x40 kernel/kcov.c:404
 kcov_close+0xc/0x10 kernel/kcov.c:510
 __fput+0x288/0x920 fs/file_table.c:280
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0xbfc/0x2a60 kernel/exit.c:826
 do_group_exit+0x125/0x310 kernel/exit.c:923
 get_signal+0x47f/0x2150 kernel/signal.c:2835
 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:789
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
 exit_to_user_mode_prepare+0x180/0x290 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+0x47/0xb0 arch/x86/entry/common.c:57
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
Code: Unable to access opcode bytes at RIP 0x4665af.
RSP: 002b:00007f2f8448c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: 0000000000000400 RBX: 000000000056c1a8 RCX: 00000000004665d9
RDX: 000000000800001d RSI: 0000000020007fc0 RDI: 0000000000000003
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 000000000056c1a8
R13: 00007ffed82b403f R14: 00007f2f8448c300 R15: 0000000000022000