rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10479 ticks this GP) idle=a7f/1/0x4000000000000000 softirq=267812/267818 fqs=0 
	(t=10502 jiffies g=548473 q=8)
rcu: rcu_preempt kthread starved for 10503 jiffies! g548473 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:28736 pid:   14 ppid:     2 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:4940 [inline]
 __schedule+0x940/0x26f0 kernel/sched/core.c:6287
 schedule+0xd3/0x270 kernel/sched/core.c:6366
 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
 rcu_gp_fqs_loop+0x186/0x800 kernel/rcu/tree.c:1957
 rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2130
 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:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6792 Comm: syz-executor.2 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:irqtime_account_irq+0x55/0x2d0 kernel/sched/cputime.c:52
Code: 9d 0d 85 c0 75 0b 48 83 c4 08 5b 5d 41 5c 41 5d c3 4a 8d 3c ed 80 68 33 8b 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 f2 01 00 00 4a 03 1c ed 80 68 33 8b e8 84 a6 e2
RSP: 0018:ffffc90000007920 EFLAGS: 00000802
RAX: dffffc0000000000 RBX: 000000000001f850 RCX: 0000000000000001
RDX: 1ffffffff1666d10 RSI: 0000000000010102 RDI: ffffffff8b336880
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8880b9c3298b
R10: ffffed1017386531 R11: 0000000000000000 R12: ffff8880ae533900
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fb99252c700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30823000 CR3: 000000014b021000 CR4: 00000000001506f0
DR0: fffffffffffff344 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 account_hardirq_exit include/linux/vtime.h:159 [inline]
 __irq_exit_rcu+0x1a/0x180 kernel/softirq.c:633
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x45/0xc0 arch/x86/kernel/apic/apic.c:1097
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:pv_wait_node kernel/locking/qspinlock_paravirt.h:301 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x5c4/0xb40 kernel/locking/qspinlock.c:473
Code: 32 84 c0 75 23 41 0f b6 14 24 4c 89 e9 83 e1 07 38 ca 7f 08 84 d2 0f 85 ed 03 00 00 0f b6 53 14 84 d2 0f 85 9e 00 00 00 f3 90 <83> e8 01 0f 84 93 00 00 00 0f b6 16 84 d2 74 09 80 fa 03 0f 8e 96
RSP: 0018:ffffc90000007a30 EFLAGS: 00000206
RAX: 0000000000006528 RBX: ffff8880b9d327c0 RCX: 0000000000000004
RDX: 0000000000000000 RSI: ffffed10173864f9 RDI: ffff8880b9c327d4
RBP: ffff8880b9c327d4 R08: 0000000000000001 R09: ffff8880b9c327d4
R10: ffffed10173864fa R11: 0000000000000080 R12: ffffed10173a64fa
R13: ffff8880b9d327d4 R14: dffffc0000000000 R15: ffff8880b9c327c0
 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:115
 spin_lock include/linux/spinlock.h:363 [inline]
 mac80211_hwsim_tx_frame_no_nl.isra.0+0x68f/0x1330 drivers/net/wireless/mac80211_hwsim.c:1516
 mac80211_hwsim_tx_frame+0x1ee/0x2a0 drivers/net/wireless/mac80211_hwsim.c:1784
 mac80211_hwsim_beacon_tx+0x49b/0x930 drivers/net/wireless/mac80211_hwsim.c:1838
 __iterate_interfaces+0x1e5/0x520 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0xd5/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1861
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x123/0x180 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:1097
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 5a 05 24 f8 48 89 ef e8 a2 7b 24 f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> a3 3c 18 f8 65 8b 05 1c 96 ca 76 85 c0 74 0a 5b 5d c3 e8 70 de
RSP: 0018:ffffc90001cb7450 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff1adc979
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffffff90489888 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817c3898 R11: 000000000000003f R12: 0000000000000037
R13: 0000000000000037 R14: dead000000000100 R15: dffffc0000000000
 __debug_check_no_obj_freed lib/debugobjects.c:1002 [inline]
 debug_check_no_obj_freed+0x20c/0x420 lib/debugobjects.c:1023
 slab_free_hook mm/slub.c:1603 [inline]
 slab_free_freelist_hook+0x175/0x250 mm/slub.c:1653
 slab_free mm/slub.c:3213 [inline]
 kfree+0xe4/0x540 mm/slub.c:4267
 free_func_state kernel/bpf/verifier.c:890 [inline]
 free_func_state kernel/bpf/verifier.c:885 [inline]
 free_verifier_state+0xbc/0x250 kernel/bpf/verifier.c:907
 pop_stack+0x1c8/0x530 kernel/bpf/verifier.c:1009
 do_check_common+0x1162/0xcf20 kernel/bpf/verifier.c:13163
 do_check_main kernel/bpf/verifier.c:13217 [inline]
 bpf_check+0x8996/0xbd20 kernel/bpf/verifier.c:13784
 bpf_prog_load+0xe57/0x21f0 kernel/bpf/syscall.c:2301
 __sys_bpf+0x67e/0x5df0 kernel/bpf/syscall.c:4587
 __do_sys_bpf kernel/bpf/syscall.c:4691 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4689 [inline]
 __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4689
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
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:00007fb99252c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9
RDX: 0000000000000024 RSI: 0000000020000200 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffd379190af R14: 00007fb99252c300 R15: 0000000000022000
NMI backtrace for cpu 1
CPU: 1 PID: 6795 Comm: syz-executor.5 Not tainted 5.14.0-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+0x47/0x144 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1ae/0x220 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:343
 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
 rcu_pending kernel/rcu/tree.c:3880 [inline]
 rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2599
 update_process_times+0x16d/0x200 kernel/time/timer.c:1785
 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:1685 [inline]
 __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1097
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
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:ffffc90000dc0a30 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 1ffffffff18f1fa4
RDX: 0000000000000001 RSI: dffffc0000000000 RDI: ffffffff8c78fd22
RBP: ffffffff8c78fd20 R08: 0000000000000001 R09: ffffffff8c78fd23
R10: fffffbfff18f1fa4 R11: 0000000000000080 R12: 0000000000003b15
R13: fffffbfff18f1fa4 R14: 0000000000000001 R15: ffff8880b9d327c0
 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:115
 spin_lock include/linux/spinlock.h:363 [inline]
 mac80211_hwsim_tx_frame_no_nl.isra.0+0x68f/0x1330 drivers/net/wireless/mac80211_hwsim.c:1516
 mac80211_hwsim_tx_frame+0x1ee/0x2a0 drivers/net/wireless/mac80211_hwsim.c:1784
 mac80211_hwsim_beacon_tx+0x49b/0x930 drivers/net/wireless/mac80211_hwsim.c:1838
 __iterate_interfaces+0x1e5/0x520 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0xd5/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1861
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x123/0x180 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:1097
 </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:6687
Code: 55 53 65 48 8b 1c 25 40 f0 01 00 48 89 dd 48 c1 ed 03 48 01 c5 bf 01 00 00 00 e8 82 79 19 f8 e8 7d 0a 46 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 80 68 19
RSP: 0018:ffffc90001acf1b8 EFLAGS: 00000206
RAX: 0000000000000fc3 RBX: ffff88807a0fd580 RCX: 1ffffffff1adc979
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffed100f41fab0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817c3898 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:__preempt_count_add arch/x86/include/asm/preempt.h:80 [inline]
RIP: 0010:preempt_count_add+0x38/0x140 kernel/sched/core.c:5398
Code: 00 fc ff df 48 89 c1 53 83 e0 07 89 fb 48 c1 e9 03 83 c0 03 0f b6 14 11 38 d0 7c 08 84 d2 0f 85 e1 00 00 00 8b 15 08 11 d5 0e <65> 01 1d 61 48 b2 7e 85 d2 75 11 65 8b 05 56 48 b2 7e 0f b6 c0 3d
RSP: 0018:ffffc90001acf288 EFLAGS: 00000297
RAX: 0000000000000003 RBX: 0000000000000001 RCX: 1ffffffff2049714
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffff8df01a7a R09: 0000000000000001
R10: fffff52000359e7a R11: 0000000000086089 R12: ffffc90001acf3c0
R13: 0000000000000000 R14: ffffc90001acf378 R15: 00000319610decdf
 unwind_next_frame+0x120/0x1ce0 arch/x86/kernel/unwind_orc.c:428
 arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
 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:1346 [inline]
 free_pcp_prepare+0x2c5/0x780 mm/page_alloc.c:1397
 free_unref_page_prepare mm/page_alloc.c:3332 [inline]
 free_unref_page+0x19/0x690 mm/page_alloc.c:3411
 __vunmap+0x783/0xb70 mm/vmalloc.c:2609
 __vfree+0x3c/0xd0 mm/vmalloc.c:2657
 vfree+0x5a/0x90 mm/vmalloc.c:2688
 bpf_prog_calc_tag+0x4fe/0x740 kernel/bpf/core.c:334
 resolve_pseudo_ldimm64 kernel/bpf/verifier.c:11495 [inline]
 bpf_check+0x1c87/0xbd20 kernel/bpf/verifier.c:13769
 bpf_prog_load+0xe57/0x21f0 kernel/bpf/syscall.c:2301
 __sys_bpf+0x67e/0x5df0 kernel/bpf/syscall.c:4587
 __do_sys_bpf kernel/bpf/syscall.c:4691 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4689 [inline]
 __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4689
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
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:00007fbf4dc0f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9
RDX: 0000000000000048 RSI: 0000000020000080 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007fff5c556b9f R14: 00007fbf4dc0f300 R15: 0000000000022000
----------------
Code disassembly (best guess):
   0:	9d                   	popfq
   1:	0d 85 c0 75 0b       	or     $0xb75c085,%eax
   6:	48 83 c4 08          	add    $0x8,%rsp
   a:	5b                   	pop    %rbx
   b:	5d                   	pop    %rbp
   c:	41 5c                	pop    %r12
   e:	41 5d                	pop    %r13
  10:	c3                   	retq
  11:	4a 8d 3c ed 80 68 33 	lea    -0x74cc9780(,%r13,8),%rdi
  18:	8b
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 f2 01 00 00    	jne    0x226
  34:	4a 03 1c ed 80 68 33 	add    -0x74cc9780(,%r13,8),%rbx
  3b:	8b
  3c:	e8                   	.byte 0xe8
  3d:	84                   	.byte 0x84
  3e:	a6                   	cmpsb  %es:(%rdi),%ds:(%rsi)
  3f:	e2                   	.byte 0xe2