rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10483 ticks this GP) idle=12a/1/0x4000000000000000 softirq=48489/48500 fqs=0 
	(t=10500 jiffies g=83753 q=76)
rcu: rcu_preempt kthread starved for 10500 jiffies! g83753 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:28424 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 20564 Comm: syz-executor.0 Not tainted 5.13.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:native_apic_mem_write+0x8/0x10 arch/x86/include/asm/apic.h:110
Code: c7 40 b7 41 8f e8 c8 82 86 00 eb b0 66 0f 1f 44 00 00 be 01 00 00 00 e9 a6 fb 2b 00 cc cc cc cc cc cc 89 ff 89 b7 00 c0 5f ff <c3> 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 53 89 fb 48
RSP: 0018:ffffc90000007ea8 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffffffff8b0dc8c0 RCX: 0000000000000020
RDX: 1ffffffff161b91a RSI: 0000000000000063 RDI: 0000000000000380
RBP: ffff8880b9c1f2c0 R08: 000000000000003f R09: 0000000000000000
R10: ffffffff81670867 R11: 0000000000000000 R12: 0000000000000063
R13: 0000000000000020 R14: ffff8880b9c26380 R15: 7fffffffffffffff
FS:  00007f29a235c700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000005461f8 CR3: 00000000212c0000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 apic_write arch/x86/include/asm/apic.h:394 [inline]
 lapic_next_event+0x4d/0x80 arch/x86/kernel/apic/apic.c:472
 clockevents_program_event+0x254/0x370 kernel/time/clockevents.c:334
 tick_program_event+0xac/0x140 kernel/time/tick-oneshot.c:44
 hrtimer_interrupt+0x414/0xa00 kernel/time/hrtimer.c:1676
 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:ffffc9000ca17a88 EFLAGS: 00000206
RAX: 0000000000000003 RBX: 0000000000000000 RCX: 1ffff11002e7472c
RDX: 0000000000000001 RSI: ffffffff817a21a1 RDI: ffffffff8132b581
RBP: ffff8880173a3960 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817a2169 R11: 1ffffffff17eff11 R12: 0000000000003e25
R13: ffffed1002e7472c R14: 0000000000000001 R15: ffff8880b9c36500
 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]
 follow_page_pte+0x193/0xc30 mm/gup.c:465
 follow_pmd_mask mm/gup.c:680 [inline]
 follow_pud_mask mm/gup.c:725 [inline]
 follow_p4d_mask mm/gup.c:751 [inline]
 follow_page_mask+0xb3b/0x14c0 mm/gup.c:810
 __get_user_pages+0x6fd/0x1490 mm/gup.c:1125
 populate_vma_page_range+0x24d/0x330 mm/gup.c:1460
 __mm_populate+0x1ea/0x3e0 mm/gup.c:1508
 mm_populate include/linux/mm.h:2624 [inline]
 __do_sys_mlockall+0x429/0x4b0 mm/mlock.c:798
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
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:00007f29a235c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000097
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007fffe916feff R14: 00007f29a235c300 R15: 0000000000022000
NMI backtrace for cpu 1
CPU: 1 PID: 20553 Comm: syz-executor.3 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:unwind_next_frame+0x13cc/0x1ce0 arch/x86/kernel/unwind_orc.c:587
Code: 0f 9e c1 40 84 f6 40 0f 95 c6 41 84 f1 0f 85 6d 04 00 00 83 e0 07 38 c1 40 0f 9e c6 84 c9 0f 95 c0 40 84 c6 0f 85 56 04 00 00 <49> 0f bf 70 02 4d 8d 7e 34 4c 89 f7 4c 01 e6 e8 d0 ea ff ff 84 c0
RSP: 0018:ffffc90000dd86e8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff920001bb0e5 RCX: 0000000000000000
RDX: ffffc90000dd8800 RSI: 0000000000000001 RDI: ffffffff8ed7aa34
RBP: 0000000000000001 R08: ffffffff8ed7aa32 R09: 0000000000000001
R10: fffff520001bb103 R11: 0000000000084087 R12: ffffc9000ca57f58
R13: ffffc90000dd87f5 R14: ffffc90000dd87c0 R15: ffffffff8ed7aa36
 arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:428 [inline]
 ____kasan_kmalloc mm/kasan/common.c:507 [inline]
 ____kasan_kmalloc mm/kasan/common.c:466 [inline]
 __kasan_kmalloc+0x98/0xc0 mm/kasan/common.c:516
 kmalloc_reserve net/core/skbuff.c:354 [inline]
 __alloc_skb+0xde/0x340 net/core/skbuff.c:425
 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:check_kcov_mode kernel/kcov.c:163 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x7/0x60 kernel/kcov.c:197
Code: ff ff b9 ff ff ff ff ba 08 00 00 00 4d 8b 03 48 0f bd ca 49 8b 45 00 48 63 c9 e9 64 ff ff ff 0f 1f 40 00 65 8b 05 e9 de 8d 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 00 f0 01 00 a9
RSP: 0018:ffffc9000ca57388 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff8880677bc0f8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88803562a040 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff81acfa58 R11: 0000000000000000 R12: 000000000041f000
R13: 0000000000000001 R14: ffff88801f160840 R15: ffffea0000ee4600
 try_to_unmap_one+0x10d9/0x2f70 mm/rmap.c:1466
 rmap_walk_file+0x397/0x860 mm/rmap.c:1951
 rmap_walk+0x105/0x190 mm/rmap.c:1969
 try_to_munlock+0x30a/0x640 mm/rmap.c:1818
 __munlock_isolated_page+0x8c/0x400 mm/mlock.c:121
 __munlock_pagevec+0x98d/0x2370 mm/mlock.c:321
 munlock_vma_pages_range+0x9d7/0xf00 mm/mlock.c:474
 munlock_vma_pages_all mm/internal.h:347 [inline]
 exit_mmap+0x1fa/0x590 mm/mmap.c:3192
 __mmput+0x122/0x470 kernel/fork.c:1096
 mmput+0x58/0x60 kernel/fork.c:1117
 exit_mm kernel/exit.c:502 [inline]
 do_exit+0xb0a/0x2a60 kernel/exit.c:813
 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:00007f1c7eda4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000097
RAX: 0000000000000000 RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffd09c3529f R14: 00007f1c7eda4300 R15: 0000000000022000