general protection fault, probably for non-canonical address 0xff1f1b1f1f1f1f23: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0xf8f8f8f8f8f8f918-0xf8f8f8f8f8f8f91f]
CPU: 1 PID: 22499 Comm: syz-executor.3 Not tainted 5.8.0-rc5-next-20200714-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:ipv6_addr_equal include/net/ipv6.h:579 [inline]
RIP: 0010:xfrm6_addr_equal include/net/xfrm.h:1699 [inline]
RIP: 0010:__xfrm6_tunnel_spi_lookup+0x22b/0x3b0 net/ipv6/xfrm6_tunnel.c:82
Code: 89 e0 48 c1 e8 03 80 3c 28 00 0f 85 5b 01 00 00 4d 8b 24 24 4d 85 e4 74 53 e8 81 59 7b fa 49 8d 7c 24 20 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 2d 01 00 00 4d 8b 7c 24 20 49 8d 7c 24 28 48 89
RSP: 0018:ffffc900019676a0 EFLAGS: 00010a02
RAX: 1f1f1f1f1f1f1f23 RBX: 00000000000000c5 RCX: ffffc9000ff45000
RDX: 0000000000040000 RSI: ffffffff86f8d7ef RDI: f8f8f8f8f8f8f918
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff888035fb6d50
R10: fffffbfff15719c9 R11: 0000000000000000 R12: f8f8f8f8f8f8f8f8
R13: bb00000000000000 R14: 00000000000080fe R15: dffffc0000000000
FS:  00007f50b9611700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2cd30000 CR3: 00000000a255c000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 xfrm6_tunnel_spi_lookup+0x8a/0x1d0 net/ipv6/xfrm6_tunnel.c:95
 xfrmi6_rcv_tunnel+0xb9/0x100 net/xfrm/xfrm_interface.c:810
 tunnel46_rcv+0xef/0x2b0 net/ipv6/tunnel6.c:193
 ip6_protocol_deliver_rcu+0x2e8/0x1670 net/ipv6/ip6_input.c:433
 ip6_input_finish+0x7f/0x160 net/ipv6/ip6_input.c:474
 NF_HOOK include/linux/netfilter.h:307 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 ip6_input+0x9c/0xd0 net/ipv6/ip6_input.c:483
 dst_input include/net/dst.h:449 [inline]
 ip6_rcv_finish net/ipv6/ip6_input.c:76 [inline]
 NF_HOOK include/linux/netfilter.h:307 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 ipv6_rcv+0x28e/0x3c0 net/ipv6/ip6_input.c:307
 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5287
 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5401
 netif_receive_skb_internal net/core/dev.c:5503 [inline]
 netif_receive_skb+0x159/0x990 net/core/dev.c:5562
 tun_rx_batched.isra.0+0x460/0x720 drivers/net/tun.c:1518
 tun_get_user+0x23b2/0x35b0 drivers/net/tun.c:1972
 tun_chr_write_iter+0xba/0x151 drivers/net/tun.c:2001
 call_write_iter include/linux/fs.h:1879 [inline]
 new_sync_write+0x422/0x650 fs/read_write.c:515
 vfs_write+0x59d/0x6b0 fs/read_write.c:595
 ksys_write+0x12d/0x250 fs/read_write.c:648
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x416661
Code: Bad RIP value.
RSP: 002b:00007f50b9610c60 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000050ac20 RCX: 0000000000416661
RDX: 000000000000004e RSI: 00000000200000c0 RDI: 00000000000000f0
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 00007f50b96119d0 R11: 0000000000000293 R12: 00000000ffffffff
R13: 0000000000000c36 R14: 00000000004ce81f R15: 00007f50b96116d4
Modules linked in:
---[ end trace 92d70395337be611 ]---
RIP: 0010:ipv6_addr_equal include/net/ipv6.h:579 [inline]
RIP: 0010:xfrm6_addr_equal include/net/xfrm.h:1699 [inline]
RIP: 0010:__xfrm6_tunnel_spi_lookup+0x22b/0x3b0 net/ipv6/xfrm6_tunnel.c:82
Code: 89 e0 48 c1 e8 03 80 3c 28 00 0f 85 5b 01 00 00 4d 8b 24 24 4d 85 e4 74 53 e8 81 59 7b fa 49 8d 7c 24 20 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 2d 01 00 00 4d 8b 7c 24 20 49 8d 7c 24 28 48 89
RSP: 0018:ffffc900019676a0 EFLAGS: 00010a02
RAX: 1f1f1f1f1f1f1f23 RBX: 00000000000000c5 RCX: ffffc9000ff45000
RDX: 0000000000040000 RSI: ffffffff86f8d7ef RDI: f8f8f8f8f8f8f918
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff888035fb6d50
R10: fffffbfff15719c9 R11: 0000000000000000 R12: f8f8f8f8f8f8f8f8
R13: bb00000000000000 R14: 00000000000080fe R15: dffffc0000000000
FS:  00007f50b9611700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2cd30000 CR3: 00000000a255c000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400