Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 6736 Comm: syz.1.231 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:xfrm_alloc_spi+0xe0e/0xf30
Code: 00 fc ff df 80 3c 03 00 4c 8b 34 24 74 08 4c 89 f7 e8 a6 a6 01 f8 4d 8b 36 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 48 8b 5c 24 58 74 08 4c 89 f7 e8 6f a7 01 f8 4d 89 3e
RSP: 0018:ffffc9000440f0e0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff110065701b6 RCX: dffffc0000000000
RDX: ffffc900082ba000 RSI: 000000000000020a RDI: 000000000000020b
RBP: ffffc9000440f230 R08: ffff8881054c3980 R09: 0000000000000002
R10: 000000000000000a R11: 0000000000000002 R12: 1ffff110241aa896
R13: ffff888032b80db0 R14: 0000000000000000 R15: ffff888032b80da8
FS:  00007f5dcead46c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5dcead3fc8 CR3: 000000011034e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 xfrm_alloc_userspi+0x70b/0xc90
 xfrm_user_rcv_msg+0x7a3/0xab0
 netlink_rcv_skb+0x208/0x470
 xfrm_netlink_rcv+0x79/0x90
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5dcdb8eba9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5dcead4038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5dcddd5fa0 RCX: 00007f5dcdb8eba9
RDX: 0000000000000000 RSI: 0000200000000540 RDI: 0000000000000003
RBP: 00007f5dcdc11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5dcddd6038 R14: 00007f5dcddd5fa0 R15: 00007ffffecfc3e8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:xfrm_alloc_spi+0xe0e/0xf30
Code: 00 fc ff df 80 3c 03 00 4c 8b 34 24 74 08 4c 89 f7 e8 a6 a6 01 f8 4d 8b 36 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 48 8b 5c 24 58 74 08 4c 89 f7 e8 6f a7 01 f8 4d 89 3e
RSP: 0018:ffffc9000440f0e0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff110065701b6 RCX: dffffc0000000000
RDX: ffffc900082ba000 RSI: 000000000000020a RDI: 000000000000020b
RBP: ffffc9000440f230 R08: ffff8881054c3980 R09: 0000000000000002
R10: 000000000000000a R11: 0000000000000002 R12: 1ffff110241aa896
R13: ffff888032b80db0 R14: 0000000000000000 R15: ffff888032b80da8
FS:  00007f5dcead46c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5dcead3fc8 CR3: 000000011034e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
