rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=10329, q=108)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294959236-4294948733), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10504 jiffies! g10329 f0x2 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:27000 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
 schedule+0x11b/0x1f0 kernel/sched/core.c:6459
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1884
 rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145
 kthread+0x3f6/0x4f0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 1
CPU: 1 PID: 4306 Comm: syz-executor.3 Not tainted 5.15.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_check_gp_kthread_starvation+0x1d2/0x240 kernel/rcu/tree_stall.h:487
 print_other_cpu_stall+0x137a/0x14d0 kernel/rcu/tree_stall.h:592
 check_cpu_stall kernel/rcu/tree_stall.h:745 [inline]
 rcu_pending kernel/rcu/tree.c:3932 [inline]
 rcu_sched_clock_irq+0xa38/0x1150 kernel/rcu/tree.c:2619
 update_process_times+0x196/0x200 kernel/time/timer.c:1788
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:queued_read_lock_slowpath+0x135/0x2a0 kernel/locking/qrwlock.c:48
Code: c1 eb 03 42 0f b6 04 2b 84 c0 74 37 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 2a 4c 89 f7 e8 24 d1 65 00 eb 20 f3 90 42 0f b6 04 2b <84> c0 74 15 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 08 4c 89 f7 e8 02
RSP: 0018:ffffc90002677040 EFLAGS: 00000286
RAX: 0000000000000000 RBX: 1ffffffff19494e8 RCX: ffffffff816412af
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8ca4a740
RBP: ffffc900026770f0 R08: dffffc0000000000 R09: fffffbfff19494e9
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8ca4a744
R13: dffffc0000000000 R14: ffffffff8ca4a740 R15: 1ffff920004cee10
 xlate_proc_name fs/proc/generic.c:188 [inline]
 __proc_create+0xe3/0x9f0 fs/proc/generic.c:401
 proc_create_reg fs/proc/generic.c:553 [inline]
 proc_create_single_data+0x123/0x240 fs/proc/generic.c:653
 snmp6_register_dev+0xa1/0x110 net/ipv6/proc.c:256
 ipv6_add_dev+0x5eb/0x1180 net/ipv6/addrconf.c:418
 addrconf_notify+0x671/0xf30 net/ipv6/addrconf.c:3562
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391
 call_netdevice_notifiers_info net/core/dev.c:2018 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2030 [inline]
 call_netdevice_notifiers+0x145/0x1b0 net/core/dev.c:2044
 register_netdevice+0x12e8/0x1720 net/core/dev.c:10385
 __ip_tunnel_create+0x2b0/0x370 net/ipv4/ip_tunnel.c:267
 ip_tunnel_init_net+0x21f/0x700 net/ipv4/ip_tunnel.c:1070
 ops_init+0x356/0x600 net/core/net_namespace.c:135
 setup_net+0x358/0x9e0 net/core/net_namespace.c:329
 copy_net_ns+0x395/0x5d0 net/core/net_namespace.c:473
 create_new_namespaces+0x425/0x7a0 kernel/nsproxy.c:110
 copy_namespaces+0x365/0x3b0 kernel/nsproxy.c:178
 copy_process+0x1841/0x3ef0 kernel/fork.c:2209
 kernel_clone+0x210/0x960 kernel/fork.c:2604
 __do_sys_clone kernel/fork.c:2721 [inline]
 __se_sys_clone kernel/fork.c:2705 [inline]
 __x64_sys_clone+0x23f/0x290 kernel/fork.c:2705
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fbfacc9dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbfabffd078 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fbfacdcc050 RCX: 00007fbfacc9dda9
RDX: 0000000000000000 RSI: 0100000000000000 RDI: 0030626f7c2a0000
RBP: 00007fbfaccea47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000006e R14: 00007fbfacdcc050 R15: 00007ffdf2e005e8
 </TASK>