IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready
NOHZ: local_softirq_pending 08
INFO: task syz-executor.4:6672 blocked for more than 140 seconds.
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
      Not tainted 4.19.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
syz-executor.4  D24048  6672      1 0x00000004
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
Call Trace:
 context_switch kernel/sched/core.c:2825 [inline]
 __schedule+0x78c/0x1c00 kernel/sched/core.c:3473
IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 1076 Comm: khungtaskd Not tainted 4.19.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x109/0x15a lib/dump_stack.c:113
 nmi_cpu_backtrace.cold.3+0x3e/0x76 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0xf5/0x119 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace include/linux/nmi.h:144 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline]
 watchdog+0x57c/0x9d0 kernel/hung_task.c:265
 kthread+0x324/0x3e0 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:413
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6809 Comm: syz-executor.5 Not tainted 4.19.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:hash_ip4_del+0x65/0xab0 net/netfilter/ipset/ip_set_hash_gen.h:849
Code: 8d bc 24 88 00 00 00 49 8b 9c 24 b0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 05 09 00 00 <49> 8b 84 24 88 00 00 00 48 89 45 d0 e8 ca 1d af fb 85 c0 74 0d 80
RSP: 0018:ffff88009858efd8 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffff880096f93300 RCX: ffff88009858f160
RDX: 1ffff100138a2a91 RSI: ffff88009858f0e0 RDI: ffff88009c515488
RBP: ffff88009858f060 R08: 0000000000000001 R09: 00000000ac1414bb
R10: 0000000000000008 R11: dffffc0000000000 R12: ffff88009c515400
R13: 0000000000000001 R14: ffff88009858f160 R15: 0000000080930c49
FS:  00007f6cdcfa0700(0000) GS:ffff8800aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000300 CR3: 00000000941fa000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 hash_ip4_uadt+0x47c/0x700 net/netfilter/ipset/ip_set_hash_ip.c:155
 call_ad+0x178/0x530 net/netfilter/ipset/ip_set_core.c:1515
 ip_set_udel+0x411/0xbe0 net/netfilter/ipset/ip_set_core.c:1651
 nfnetlink_rcv_msg+0x942/0xc10 net/netfilter/nfnetlink.c:228
 netlink_rcv_skb+0x142/0x390 net/netlink/af_netlink.c:2476
 nfnetlink_rcv+0x163/0x3b0 net/netfilter/nfnetlink.c:560
 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1336
 netlink_sendmsg+0x765/0xc40 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:621 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:631
 ___sys_sendmsg+0x647/0x950 net/socket.c:2116
 __sys_sendmsg+0xd9/0x180 net/socket.c:2154
 __do_sys_sendmsg net/socket.c:2163 [inline]
 __se_sys_sendmsg net/socket.c:2161 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2161
 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45b349
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f6cdcf9fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f6cdcfa06d4 RCX: 000000000045b349
RDX: 0000000000000040 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000008ea R14: 00000000004ca43c R15: 000000000075bf2c