rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10408 ticks this GP) idle=0ce/1/0x4000000000000000 softirq=172311/172315 fqs=0 
	(t=10502 jiffies g=329005 q=39)
rcu: rcu_preempt kthread starved for 10503 jiffies! g329005 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:28880 pid:   14 ppid:     2 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:4681 [inline]
 __schedule+0x93a/0x26f0 kernel/sched/core.c:5938
 schedule+0xd3/0x270 kernel/sched/core.c:6017
 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
 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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 10096 Comm: syz-executor.3 Not tainted 5.14.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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: 00000206
RAX: 0000000000000003 RBX: 0000000000000000 RCX: 1ffffffff18efafc
RDX: 0000000000000001 RSI: ffffffff817bd271 RDI: ffffffff81332591
RBP: ffffffff8c77d7e0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817bd239 R11: 0000000000000080 R12: 0000000000004cb5
R13: fffffbfff18efafc R14: 0000000000000001 R15: ffff8880b9d527c0
FS:  00007f78903e3700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0151d480c CR3: 0000000094232000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 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]
 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:1537 [inline]
 __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1601
 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1618
 __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:6326
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 a2 26 20 f8 e8 ed 70 4c 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 b0 15 20
RSP: 0018:ffffc9000194f3d8 EFLAGS: 00000202
RAX: 0000000000006f73 RBX: ffff88807c9ad4c0 RCX: 1ffffffff1faa7ba
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffed100f935a98 R08: 0000000000000001 R09: ffffffff8fcf29e7
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:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5593
Code: cd a6 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc9000194f4a0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000329e96 RCX: d2e8eaa23377597e
RDX: 1ffff1100f935bd5 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8fcf28e7
R10: fffffbfff1f9e51c R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8b97c280 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:267 [inline]
 rcu_read_lock include/linux/rcupdate.h:687 [inline]
 tipc_data_ready+0x34/0x270 net/tipc/socket.c:2130
 tipc_sk_filter_rcv+0xcf0/0x30c0 net/tipc/socket.c:2385
 tipc_sk_backlog_rcv+0xd4/0x1c0 net/tipc/socket.c:2404
 sk_backlog_rcv include/net/sock.h:1024 [inline]
 __release_sock+0x134/0x3b0 net/core/sock.c:2669
 release_sock+0x54/0x1b0 net/core/sock.c:3193
 tipc_wait_for_rcvmsg.isra.0+0x285/0x560 net/tipc/socket.c:1846
 tipc_recvstream+0x23d/0x910 net/tipc/socket.c:2039
 sock_recvmsg_nosec net/socket.c:944 [inline]
 sock_recvmsg net/socket.c:962 [inline]
 sock_recvmsg net/socket.c:958 [inline]
 ____sys_recvmsg+0x2c4/0x600 net/socket.c:2622
 ___sys_recvmsg+0x127/0x200 net/socket.c:2664
 __sys_recvmsg+0xe2/0x1a0 net/socket.c:2694
 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:00007f78903e3188 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9
RDX: 0000000000003f9c RSI: 0000000020000200 RDI: 0000000000000004
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007fff2176216f R14: 00007f78903e3300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 10100 Comm: syz-executor.5 Not tainted 5.14.0-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: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: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: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:mac80211_hwsim_tx_frame_no_nl.isra.0+0x737/0x1330 drivers/net/wireless/mac80211_hwsim.c:1517
Code: b6 44 24 08 84 c0 0f 85 a8 06 00 00 e8 d2 6c 42 fc e8 cd 6c 42 fc 48 89 d8 48 c1 e8 03 80 3c 28 00 0f 85 93 09 00 00 48 8b 1b <48> 81 fb a0 d7 77 8c 0f 84 f7 04 00 00 e8 a7 6c 42 fc 49 39 de 4c
RSP: 0018:ffffc90000007ba0 EFLAGS: 00000246
RAX: 1ffff11005b5964c RBX: ffff88806b133260 RCX: 0000000000000100
RDX: ffff88807c9a8000 RSI: ffffffff85333ce3 RDI: 0000000000000003
RBP: dffffc0000000000 R08: 0000000000000006 R09: 0000000000000000
R10: ffffffff85333d59 R11: 0000000000000000 R12: ffff88809595b280
R13: ffff88801706b490 R14: ffff88801706b260 R15: 0000000000000000
 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:1537 [inline]
 __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1601
 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1618
 __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:__orc_find+0x54/0xf0 arch/x86/kernel/unwind_orc.c:50
Code: bf 00 00 00 00 00 fc ff df 49 89 fe 48 89 fd eb 0c 48 8d 6b 04 49 89 de 49 39 ec 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f <48> c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03
RSP: 0018:ffffc90001ceec70 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff9200039dd9f RCX: ffffffff8134125a
RDX: 0000000000000000 RSI: ffffffff8de64b04 RDI: ffffffff8d792a94
RBP: ffffffff8d792a94 R08: 0000000000000000 R09: ffffffff8de64b04
R10: fffff5200039ddbd R11: 0000000000086088 R12: ffffffff8d792a94
R13: ffffffff8d792a94 R14: ffffffff8d792a94 R15: dffffc0000000000
 orc_find arch/x86/kernel/unwind_orc.c:173 [inline]
 unwind_next_frame+0x32a/0x1ce0 arch/x86/kernel/unwind_orc.c:443
 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
 __set_page_owner+0x50/0x290 mm/page_owner.c:181
 prep_new_page mm/page_alloc.c:2436 [inline]
 get_page_from_freelist+0xa72/0x2f80 mm/page_alloc.c:4169
 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5391
 alloc_pages_vma+0xd9/0x710 mm/mempolicy.c:2208
 wp_page_copy+0x1011/0x2450 mm/memory.c:2998
 do_wp_page+0x2cb/0x1ad0 mm/memory.c:3313
 handle_pte_fault mm/memory.c:4576 [inline]
 __handle_mm_fault+0x2ada/0x5320 mm/memory.c:4693
 handle_mm_fault+0x1c8/0x790 mm/memory.c:4791
 do_user_addr_fault+0x48b/0x11c0 arch/x86/mm/fault.c:1390
 handle_page_fault arch/x86/mm/fault.c:1475 [inline]
 exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1531
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:206
Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 1f 00 c3 0f 1f 80 00 00 00 00 0f 1f 00 83 fa 40 0f 82 70 ff ff ff 89 d1 <f3> a4 31 c0 0f 1f 00 c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 83 f8
RSP: 0018:ffffc90001cef7a8 EFLAGS: 00010206
RAX: 0000000000000001 RBX: 00000000000101d0 RCX: 00000000000001c0
RDX: 00000000000101d0 RSI: ffff8880970f00f8 RDI: 0000000020244000
RBP: 0000000020233ff0 R08: 0000000000000000 R09: ffff8880970f02b7
R10: ffffed1012e1e056 R11: 0000000000000000 R12: ffff8880970e00e8
R13: 00000000202441c0 R14: 0000000000000000 R15: ffffc90001cefd38
 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
 copyout.part.0+0xe4/0x110 lib/iov_iter.c:157
 copyout lib/iov_iter.c:620 [inline]
 _copy_to_iter+0x2b1/0x1600 lib/iov_iter.c:620
 copy_to_iter include/linux/uio.h:139 [inline]
 simple_copy_to_iter+0x4c/0x70 net/core/datagram.c:519
 __skb_datagram_iter+0x10f/0x770 net/core/datagram.c:425
 skb_copy_datagram_iter+0x40/0x50 net/core/datagram.c:533
 skb_copy_datagram_msg include/linux/skbuff.h:3620 [inline]
 tipc_recvstream+0x3e9/0x910 net/tipc/socket.c:2068
 sock_recvmsg_nosec net/socket.c:944 [inline]
 sock_recvmsg net/socket.c:962 [inline]
 sock_recvmsg net/socket.c:958 [inline]
 ____sys_recvmsg+0x2c4/0x600 net/socket.c:2622
 ___sys_recvmsg+0x127/0x200 net/socket.c:2664
 __sys_recvmsg+0xe2/0x1a0 net/socket.c:2694
 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:00007fbd76104188 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9
RDX: 0000000000003f9c RSI: 0000000020000200 RDI: 0000000000000004
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffe663ba80f R14: 00007fbd76104300 R15: 0000000000022000
----------------
Code disassembly (best guess):
   0:	eb c6                	jmp    0xffffffc8
   2:	45 01 01             	add    %r8d,(%r9)
   5:	41 bc 00 80 00 00    	mov    $0x8000,%r12d
   b:	48 c1 e9 03          	shr    $0x3,%rcx
   f:	83 e3 07             	and    $0x7,%ebx
  12:	41 be 01 00 00 00    	mov    $0x1,%r14d
  18:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1f:	fc ff df
  22:	4c 8d 2c 01          	lea    (%rcx,%rax,1),%r13
  26:	eb 0c                	jmp    0x34
  28:	f3 90                	pause
* 2a:	41 83 ec 01          	sub    $0x1,%r12d <-- trapping instruction
  2e:	0f 84 72 04 00 00    	je     0x4a6
  34:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  39:	38 d8                	cmp    %bl,%al
  3b:	7f 08                	jg     0x45
  3d:	84 c0                	test   %al,%al
  3f:	0f                   	.byte 0xf