rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=95b/1/0x4000000000000000 softirq=188227/188228 fqs=5126 
	(t=10500 jiffies g=342969 q=532)
NMI backtrace for cpu 0
CPU: 0 PID: 31360 Comm: syz-executor.0 Not tainted 5.16.0-rc4-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:106
 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
 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: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:3878 [inline]
 rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2597
 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:1428
 __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:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: 0f 1f 44 00 00 55 48 8b 74 24 08 48 89 fd 48 83 c7 18 e8 7e b1 15 f8 48 89 ef e8 c6 27 16 f8 e8 41 e2 36 f8 fb bf 01 00 00 00 <e8> 16 f0 08 f8 65 8b 05 ef 62 bb 76 85 c0 74 02 5d c3 e8 0b 38 b9
RSP: 0018:ffffc90000007e08 EFLAGS: 00000202
RAX: 000000000178e2ae RBX: ffffffff8747bfe0 RCX: 1ffffffff1fef746
RDX: 0000000000000000 RSI: 0000000000000101 RDI: 0000000000000001
RBP: ffff8880b9c28280 R08: 0000000000000001 R09: ffffffff8ff73a17
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90000007e98
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8880b9c28280
 expire_timers kernel/time/timer.c:1465 [inline]
 __run_timers.part.0+0x665/0xa20 kernel/time/timer.c:1734
 __run_timers kernel/time/timer.c:1715 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x123/0x180 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:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5605
Code: b3 a5 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:ffffc90004bdf068 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff9200097be0f RCX: ffffffff815c743f
RDX: 1ffff1102d5ae14b RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8ff73a17
R10: fffffbfff1fee742 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8bcc83e0 R15: 0000000000000000
 fs_reclaim_acquire mm/page_alloc.c:4552 [inline]
 fs_reclaim_acquire+0xd2/0x160 mm/page_alloc.c:4543
 prepare_alloc_pages+0x15c/0x570 mm/page_alloc.c:5141
 __alloc_pages+0x12f/0x500 mm/page_alloc.c:5358
 alloc_pages_vma+0xf3/0x7d0 mm/mempolicy.c:2152
 wp_page_copy+0xec6/0x2280 mm/memory.c:2984
 do_wp_page+0x2cb/0x1ae0 mm/memory.c:3299
 handle_pte_fault mm/memory.c:4569 [inline]
 __handle_mm_fault+0x1f40/0x5120 mm/memory.c:4686
 handle_mm_fault+0x1c8/0x790 mm/memory.c:4784
 do_user_addr_fault+0x489/0x11c0 arch/x86/mm/fault.c:1397
 handle_page_fault arch/x86/mm/fault.c:1485 [inline]
 exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1541
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0010:copy_user_generic_string+0x2c/0x40 arch/x86/lib/copy_user_64.S:169
Code: cb 83 fa 08 72 27 89 f9 83 e1 07 74 15 83 e9 08 f7 d9 29 ca 8a 06 88 07 48 ff c6 48 ff c7 ff c9 75 f2 89 d1 c1 e9 03 83 e2 07 <f3> 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 0f 1f 80 00 00 00 00 0f 01
RSP: 0018:ffffc90004bdf7a8 EFLAGS: 00050246
RAX: 0000000000000001 RBX: 00000000000101d0 RCX: 0000000000000854
RDX: 0000000000000000 RSI: ffff88816d64c018 RDI: 000000002009d000
RBP: 00000000200910d0 R08: 0000000000000000 R09: ffff88816d6502b7
R10: ffffed102daca056 R11: 0000000000000000 R12: ffff88816d6400e8
R13: 00000000200a12a0 R14: 0000000000000000 R15: ffffc90004bdfd38
 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:667 [inline]
 _copy_to_iter+0x2b1/0x1600 lib/iov_iter.c:667
 copy_to_iter include/linux/uio.h:155 [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:3657 [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:2628
 ___sys_recvmsg+0x127/0x200 net/socket.c:2670
 __sys_recvmsg+0xe2/0x1a0 net/socket.c:2700
 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: 0033:0x7fc7efb04af9
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:00007fc7eea7a188 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007fc7efc17f60 RCX: 00007fc7efb04af9
RDX: 0000000000003f9c RSI: 0000000020000200 RDI: 0000000000000004
RBP: 00007fc7efb5eff7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc30865bef R14: 00007fc7eea7a300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   5:	55                   	push   %rbp
   6:	48 8b 74 24 08       	mov    0x8(%rsp),%rsi
   b:	48 89 fd             	mov    %rdi,%rbp
   e:	48 83 c7 18          	add    $0x18,%rdi
  12:	e8 7e b1 15 f8       	callq  0xf815b195
  17:	48 89 ef             	mov    %rbp,%rdi
  1a:	e8 c6 27 16 f8       	callq  0xf81627e5
  1f:	e8 41 e2 36 f8       	callq  0xf836e265
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 16 f0 08 f8       	callq  0xf808f045 <-- trapping instruction
  2f:	65 8b 05 ef 62 bb 76 	mov    %gs:0x76bb62ef(%rip),%eax        # 0x76bb6325
  36:	85 c0                	test   %eax,%eax
  38:	74 02                	je     0x3c
  3a:	5d                   	pop    %rbp
  3b:	c3                   	retq
  3c:	e8                   	.byte 0xe8
  3d:	0b 38                	or     (%rax),%edi
  3f:	b9                   	.byte 0xb9