rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (1 GPs behind) idle=7d3/1/0x4000000000000000 softirq=192867/192868 fqs=2 
	(t=10502 jiffies g=311565 q=238)
rcu: rcu_preempt kthread starved for 10499 jiffies! g311565 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:I stack:26576 pid:   14 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4969 [inline]
 __schedule+0xb72/0x1460 kernel/sched/core.c:6250
 schedule+0x12b/0x1f0 kernel/sched/core.c:6323
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1881
 rcu_gp_fqs_loop+0x1fd/0x770 kernel/rcu/tree.c:1955
 rcu_gp_kthread+0xa5/0x350 kernel/rcu/tree.c:2128
 kthread+0x468/0x490 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30
 </TASK>
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: 9363 Comm: syz-executor.4 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rcu_lockdep_current_cpu_online+0x10/0x130 kernel/rcu/tree.c:1166
Code: c7 40 23 b2 8c e8 c0 ee c8 02 eb 89 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 57 41 56 41 54 53 65 8b 0d ba c8 93 7e b0 01 <f7> c1 00 00 f0 00 0f 85 e3 00 00 00 83 3d 65 69 8e 0c 00 0f 84 d6
RSP: 0018:ffffc9000ad1fe18 EFLAGS: 00000002
RAX: 0000000000416801 RBX: 1ffff920015a3fc8 RCX: 0000000080000001
RDX: ffff888084ff8000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000ad1fec8 R08: ffffffff818adb65 R09: fffffbfff1bfa1ee
R10: fffffbfff1bfa1ee R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  00005555562cc400(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb8bfd07000 CR3: 000000006d9ed000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
 rcu_read_lock_sched_held+0x74/0x130 kernel/rcu/update.c:123
 trace_irq_enable+0x84/0x220 include/trace/events/preemptirq.h:40
 trace_hardirqs_on_prepare+0x55/0x70 kernel/trace/trace_preemptirq.c:32
 __exit_to_user_mode kernel/entry/common.c:126 [inline]
 syscall_exit_to_user_mode+0x33/0x70 kernel/entry/common.c:302
 do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f59c9185811
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 aa e7 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 e3 e7 ff ff 48 8b 04 24 eb 97 66 2e 0f 1f
RSP: 002b:00007ffdc0399ae0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 0000000000000d56 RCX: 00007f59c9185811
RDX: 00007ffdc0399b20 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffdc0399bac R08: 0000000000000000 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000004b
R13: 00000000002a637c R14: 0000000000000005 R15: 00007ffdc0399c10
 </TASK>
NMI backtrace for cpu 1
CPU: 1 PID: 31099 Comm: syz-executor.0 Not tainted 5.15.0-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+0x1dc/0x2d8 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x22d/0x390 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+0x1e33/0x2bc0 kernel/rcu/tree.c:2597
 update_process_times+0x197/0x200 kernel/time/timer.c:1785
 tick_sched_handle kernel/time/tick-sched.c:226 [inline]
 tick_sched_timer+0x27d/0x420 kernel/time/tick-sched.c:1421
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1097
 asm_sysvec_apic_timer_interrupt+0x12/0x20
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: f1 52 fd ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 1e 29 63 f7 48 89 df e8 26 da 64 f7 e8 51 27 88 f7 fb bf 01 00 00 00 <e8> b6 35 57 f7 65 8b 05 e7 b9 ff 75 85 c0 74 02 5b c3 0f 1f 44 00
RSP: 0018:ffffc90000dc0cb0 EFLAGS: 00000282
RAX: ee1fddcca7f31f00 RBX: ffff8880b9b280c0 RCX: ffffffff816634e1
RDX: dffffc0000000000 RSI: 0000000000000101 RDI: 0000000000000001
RBP: ffffc90000dc0e10 R08: dffffc0000000000 R09: fffffbfff1fee1e1
R10: fffffbfff1fee1e1 R11: 0000000000000000 R12: ffffffff882cee10
R13: dffffc0000000000 R14: ffff8880b9b28100 R15: ffff888036910010
 expire_timers kernel/time/timer.c:1465 [inline]
 __run_timers+0x70a/0x910 kernel/time/timer.c:1734
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747
 __do_softirq+0x392/0x7a3 kernel/softirq.c:558
 __irq_exit_rcu+0xec/0x170 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:__dev_alloc_name net/core/dev.c:1113 [inline]
RIP: 0010:dev_alloc_name_ns+0x83d/0x9f0 net/core/dev.c:1160
Code: 48 8b 4c 24 18 48 89 c8 48 c1 e8 03 42 80 3c 20 00 4c 8b 7c 24 30 74 0f 48 8b 7c 24 18 e8 db 31 c2 f9 48 8b 4c 24 18 48 8b 09 <49> 39 cf 74 53 48 89 cb e8 36 a3 76 f9 48 89 d9 e9 75 fc ff ff 44
RSP: 0018:ffffc90022496b20 EFLAGS: 00000246
RAX: 1ffff1100ef92808 RBX: 0000000000000000 RCX: ffff88809d998040
RDX: ffffc90002e5a000 RSI: 0000000000002f47 RDI: 0000000000002f48
RBP: ffffc90022496c30 R08: ffffffff880da0d1 R09: ffffffff843b8158
R10: 0000000000000002 R11: ffff8880ad989d00 R12: dffffc0000000000
R13: 1ffff92004492d70 R14: ffffc90022496ba0 R15: ffff88803cbf8150
 dev_get_valid_name net/core/dev.c:1195 [inline]
 register_netdevice+0x555/0x1c00 net/core/dev.c:10249
 register_vlan_dev+0x36b/0x860 net/8021q/vlan.c:182
 vlan_newlink+0x43f/0x5f0 net/8021q/vlan_netlink.c:187
 __rtnl_newlink net/core/rtnetlink.c:3458 [inline]
 rtnl_newlink+0x14b3/0x1d10 net/core/rtnetlink.c:3506
 rtnetlink_rcv_msg+0x934/0xe60 net/core/rtnetlink.c:5571
 netlink_rcv_skb+0x200/0x470 net/netlink/af_netlink.c:2491
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x814/0x9f0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0xa20/0xe40 net/netlink/af_netlink.c:1916
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg net/socket.c:724 [inline]
 ____sys_sendmsg+0x5b9/0x910 net/socket.c:2409
 ___sys_sendmsg net/socket.c:2463 [inline]
 __sys_sendmsg+0x280/0x370 net/socket.c:2492
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f00219a3ae9
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:00007f001eef8188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f0021ab7020 RCX: 00007f00219a3ae9
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 00007f00219fdf25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd4c4c5a4f R14: 00007f001eef8300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	c7 40 23 b2 8c e8 c0 	movl   $0xc0e88cb2,0x23(%rax)
   7:	ee                   	out    %al,(%dx)
   8:	c8 02 eb 89          	enterq $0xeb02,$0x89
   c:	66 2e 0f 1f 84 00 00 	nopw   %cs:0x0(%rax,%rax,1)
  13:	00 00 00
  16:	0f 1f 40 00          	nopl   0x0(%rax)
  1a:	41 57                	push   %r15
  1c:	41 56                	push   %r14
  1e:	41 54                	push   %r12
  20:	53                   	push   %rbx
  21:	65 8b 0d ba c8 93 7e 	mov    %gs:0x7e93c8ba(%rip),%ecx        # 0x7e93c8e2
  28:	b0 01                	mov    $0x1,%al
* 2a:	f7 c1 00 00 f0 00    	test   $0xf00000,%ecx <-- trapping instruction
  30:	0f 85 e3 00 00 00    	jne    0x119
  36:	83 3d 65 69 8e 0c 00 	cmpl   $0x0,0xc8e6965(%rip)        # 0xc8e69a2
  3d:	0f                   	.byte 0xf
  3e:	84 d6                	test   %dl,%dh