TITLE: INFO: rcu detected stall in ip_set_uadd
ALT: stall in ip_set_uadd
TYPE: HANG

[  350.106517][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
[  350.111113][    C3] rcu: 	3-....: (1 GPs behind) idle=ef6/1/0x4000000000000002 softirq=23650/23653 fqs=4947 
[  350.125129][    C3] 	(t=10502 jiffies g=25589 q=1949)
[  350.125940][    C3] NMI backtrace for cpu 3
[  350.126619][    C3] CPU: 3 PID: 19667 Comm: syz-executor.2 Not tainted 5.5.0-rc6+ #4
[  350.127842][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[  350.129375][    C3] Call Trace:
[  350.129898][    C3]  <IRQ>
[  350.130404][    C3]  dump_stack+0x199/0x216
[  350.131110][    C3]  nmi_cpu_backtrace.cold.7+0x70/0xb1
[  350.133015][    C3]  nmi_trigger_cpumask_backtrace+0x23f/0x281
[  350.134030][    C3]  arch_trigger_cpumask_backtrace+0x14/0x20
[  350.135076][    C3]  rcu_dump_cpu_stacks+0x16f/0x1bc
[  350.146317][    C3]  rcu_sched_clock_irq.cold.91+0x508/0xc60
[  350.148419][    C3]  update_process_times+0x28/0x60
[  350.149260][    C3]  tick_sched_handle+0x9f/0x180
[  350.150039][    C3]  tick_sched_timer+0x51/0x140
[  350.151146][    C3]  __hrtimer_run_queues+0x3ce/0xef0
[  350.154697][    C3]  hrtimer_interrupt+0x313/0x780
[  350.171637][    C3]  smp_apic_timer_interrupt+0x163/0x5f0
[  350.172696][    C3]  apic_timer_interrupt+0xf/0x20
[  350.173488][    C3]  </IRQ>
[  350.173985][    C3] RIP: 0010:hash_ipportnet4_expire+0x1ab/0x8f0
[  350.174969][    C3] Code: 48 89 d0 48 89 55 b8 83 e2 07 48 c1 e8 03 42 0f b6 04 38 38 d0 7f 08 84 c0 0f 85 5e 06 00 00 4c 8b 6d d0 31 ff 41 0f b6 5d 19 <89> de e8 8e 98 f7 fa 84 db 0f 84 03 05 00 00 e8 b1 97 f7 fa 49 8d
[  350.178340][    C3] RSP: 0018:ffffc9001969eda0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[  350.179812][    C3] RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffc90004374000
[  350.181039][    C3] RDX: 0000000000000001 RSI: ffffffff867d5c7d RDI: 0000000000000000
[  350.182240][    C3] RBP: ffffc9001969ee50 R08: ffff88803cfa06c0 R09: ffffed1006b26483
[  350.183434][    C3] R10: ffffed1006b26482 R11: ffff888035932417 R12: 0000000000000001
[  350.184633][    C3] R13: ffff888035932200 R14: ffff8880656f4400 R15: dffffc0000000000
[  350.186689][    C3]  hash_ipportnet4_add+0x178/0x2360
[  350.206243][    C3]  hash_ipportnet4_uadt+0xd0a/0x1440
[  350.229375][    C3]  call_ad+0x1a1/0x5b0
[  350.232645][    C3]  ip_set_ad.isra.28+0x56c/0xc20
[  350.236080][    C3]  ip_set_uadd+0x37/0x50
[  350.238387][    C3]  nfnetlink_rcv_msg+0xccd/0xfa0
[  350.246505][    C3]  netlink_rcv_skb+0x172/0x460
[  350.251545][    C3]  nfnetlink_rcv+0x1ba/0x460
[  350.254774][    C3]  netlink_unicast+0x5a9/0x7c0
[  350.259273][    C3]  netlink_sendmsg+0x915/0xe90
[  350.267753][    C3]  sock_sendmsg+0xd2/0x120
[  350.268650][    C3]  ____sys_sendmsg+0x744/0x870
[  350.271122][    C3]  ___sys_sendmsg+0x10a/0x180
[  350.281383][    C3]  __sys_sendmsg+0x110/0x1f0
[  350.289158][    C3]  __x64_sys_sendmsg+0x78/0xb0
[  350.290269][    C3]  do_syscall_64+0xfa/0x780
[  350.291314][    C3]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  350.292555][    C3] RIP: 0033:0x466bf9
[  350.293419][    C3] 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
[  350.297146][    C3] RSP: 002b:00007f8c5cac9c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  350.299135][    C3] RAX: ffffffffffffffda RBX: 000000000052bfa8 RCX: 0000000000466bf9
[  350.301416][    C3] RDX: 0000000000000000 RSI: 0000000020000480 RDI: 0000000000000003
[  350.303173][    C3] RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000
[  350.305981][    C3] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8c5caca6bc
[  350.307454][    C3] R13: 00000000000008dd R14: 00000000004b042d R15: 00000000004e6f40
