IPv6: ADDRCONF(NETDEV_CHANGE): sit55: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): sit56: link becomes ready
ip6_tunnel: ip6tnl2 xmit: Local address not yet configured!
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 7896 Comm: syz-executor.4 Not tainted 4.9.141+ #1
task: ffff88001ef15f00 task.stack: ffff88008eae8000
RIP: 0010:[<ffffffff826bd1c7>]  [<ffffffff826bd1c7>] addrconf_rt_table+0x127/0x290 net/ipv6/addrconf.c:2223
RSP: 0018:ffff88008eaeec00  EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000200 RCX: 0000000000000001
RDX: 0000000000000056 RSI: 0000000000000001 RDI: 00000000000002b0
RBP: ffff88008eaeec30 R08: ffff88001ef167b0 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 00000000000000fe R14: ffff880199283300 R15: ffff88009cdcda90
FS:  00007f3363f62700(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000075c000 CR3: 00000001cfcd7000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff826bd0a0 ffff880199283300 0000000000000000 ffff8801ab525b80
 ffff8801c4585f80 ffff88009cdcda90 ffff88008eaeec78 ffffffff826bdab3
 00000000c4585e38 3aebd66700000080 ffff88009cdcd900 ffff88009cdcda90
Call Trace:
 [<ffffffff826bdab3>] addrconf_get_prefix_route+0x33/0x270 net/ipv6/addrconf.c:2277
 [<ffffffff826be2c8>] __ipv6_ifa_notify+0x5d8/0x790 net/ipv6/addrconf.c:5496
 [<ffffffff826bfcbe>] addrconf_ifdown+0xaae/0x1420 net/ipv6/addrconf.c:3689
 [<ffffffff826c74be>] addrconf_notify+0x8ee/0x2140 net/ipv6/addrconf.c:3493
 [<ffffffff811478d4>] notifier_call_chain+0xb4/0x1d0 kernel/notifier.c:93
 [<ffffffff81147a5d>] __raw_notifier_call_chain kernel/notifier.c:394 [inline]
 [<ffffffff81147a5d>] raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401
 [<ffffffff822f4a45>] call_netdevice_notifiers_info+0x55/0x70 net/core/dev.c:1647
 [<ffffffff82317f36>] call_netdevice_notifiers net/core/dev.c:1663 [inline]
 [<ffffffff82317f36>] __dev_notify_flags+0xf6/0x270 net/core/dev.c:6539
 [<ffffffff82319123>] dev_change_flags+0xf3/0x140 net/core/dev.c:6572
 [<ffffffff8234caef>] do_setlink+0x9af/0x2ef0 net/core/rtnetlink.c:2027
 [<ffffffff82354b10>] rtnl_group_changelink net/core/rtnetlink.c:2423 [inline]
 [<ffffffff82354b10>] rtnl_newlink+0xbd0/0x1550 net/core/rtnetlink.c:2571
 [<ffffffff8235592c>] rtnetlink_rcv_msg+0x49c/0x650 net/core/rtnetlink.c:4078
 [<ffffffff823d59e5>] netlink_rcv_skb+0x145/0x370 net/netlink/af_netlink.c:2365
 [<ffffffff8234abfa>] rtnetlink_rcv+0x2a/0x40 net/core/rtnetlink.c:4084
 [<ffffffff823d4478>] netlink_unicast_kernel net/netlink/af_netlink.c:1285 [inline]
 [<ffffffff823d4478>] netlink_unicast+0x4d8/0x6d0 net/netlink/af_netlink.c:1311
 [<ffffffff823d4e44>] netlink_sendmsg+0x694/0xc30 net/netlink/af_netlink.c:1859
 [<ffffffff822a063b>] sock_sendmsg_nosec net/socket.c:648 [inline]
 [<ffffffff822a063b>] sock_sendmsg+0xbb/0x110 net/socket.c:658
 [<ffffffff822a231c>] ___sys_sendmsg+0x6fc/0x840 net/socket.c:1982
 [<ffffffff822a5339>] __sys_sendmsg+0xd9/0x190 net/socket.c:2016
 [<ffffffff822a541d>] SYSC_sendmsg net/socket.c:2027 [inline]
 [<ffffffff822a541d>] SyS_sendmsg+0x2d/0x50 net/socket.c:2023
 [<ffffffff810056ef>] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
 [<ffffffff82817893>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 82 be 01 00 00 00 48 c7 c7 60 c3 0c 83 e8 d2 f9 b4 fe 49 8d bc 24 b0 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 34 01 00 00 45 8b bc 24 b0 
RIP  [<ffffffff826bd1c7>] addrconf_rt_table+0x127/0x290 net/ipv6/addrconf.c:2223
 RSP <ffff88008eaeec00>
---[ end trace c2432c6331da5b03 ]---