IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready
general protection fault, probably for non-canonical address 0xdffffc0000000056: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000002b0-0x00000000000002b7]
CPU: 1 PID: 8836 Comm: syz-executor016 Not tainted 5.5.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:inet6_set_link_af+0x23c/0xac0 net/ipv6/addrconf.c:5733
Code: 64 fa 48 83 c3 04 48 89 d8 48 c1 e8 03 42 8a 04 28 84 c0 0f 85 88 06 00 00 0f b6 1b 49 81 c4 b0 02 00 00 4c 89 e0 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 85 06 00 00 41 89 1c 24 eb 2c 80 3d ce 86
RSP: 0018:ffffc90002147170 EFLAGS: 00010206
RAX: 0000000000000056 RBX: 0000000000000000 RCX: ffff8880978f02c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc900021471e0
RBP: ffffc90002147240 R08: ffffffff8712007f R09: ffffc900021471a0
R10: fffff52000428e3d R11: 0000000000000000 R12: 00000000000002b0
R13: dffffc0000000000 R14: ffff8880989d7024 R15: 0000000000000000
FS:  0000000000ca1880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056328052e0f0 CR3: 00000000a6d8b000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_setlink+0x2cbc/0x3880 net/core/rtnetlink.c:2754
 rtnl_group_changelink net/core/rtnetlink.c:3103 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3257 [inline]
 rtnl_newlink+0x10b2/0x1c00 net/core/rtnetlink.c:3377
 rtnetlink_rcv_msg+0x889/0xd40 net/core/rtnetlink.c:5438
 netlink_rcv_skb+0x19e/0x3e0 net/netlink/af_netlink.c:2477
 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:5456
 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0x766/0x920 net/netlink/af_netlink.c:1328
 netlink_sendmsg+0xa2b/0xd40 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg net/socket.c:672 [inline]
 ____sys_sendmsg+0x4f7/0x7f0 net/socket.c:2343
 ___sys_sendmsg net/socket.c:2397 [inline]
 __sys_sendmsg+0x1ed/0x290 net/socket.c:2430
 __do_sys_sendmsg net/socket.c:2439 [inline]
 __se_sys_sendmsg net/socket.c:2437 [inline]
 __x64_sys_sendmsg+0x7f/0x90 net/socket.c:2437
 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4402e9
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffd31ff9958 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402e9
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 0000000000000008 R09: 00000000004002c8
R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000401b70
R13: 0000000000401c00 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace d2f455af5f18d085 ]---
RIP: 0010:inet6_set_link_af+0x23c/0xac0 net/ipv6/addrconf.c:5733
Code: 64 fa 48 83 c3 04 48 89 d8 48 c1 e8 03 42 8a 04 28 84 c0 0f 85 88 06 00 00 0f b6 1b 49 81 c4 b0 02 00 00 4c 89 e0 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 85 06 00 00 41 89 1c 24 eb 2c 80 3d ce 86
RSP: 0018:ffffc90002147170 EFLAGS: 00010206
RAX: 0000000000000056 RBX: 0000000000000000 RCX: ffff8880978f02c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc900021471e0
RBP: ffffc90002147240 R08: ffffffff8712007f R09: ffffc900021471a0
R10: fffff52000428e3d R11: 0000000000000000 R12: 00000000000002b0
R13: dffffc0000000000 R14: ffff8880989d7024 R15: 0000000000000000
FS:  0000000000ca1880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056328052e0f0 CR3: 00000000a6d8b000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400