kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
qnx4: no qnx4 filesystem (no root dir).
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 3310 Comm: syz-executor.1 Not tainted 4.14.264-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880b2844640 task.stack: ffff888090938000
RIP: 0010:__write_once_size include/linux/compiler.h:212 [inline]
RIP: 0010:__hlist_del include/linux/list.h:688 [inline]
RIP: 0010:hlist_del_rcu include/linux/rculist.h:427 [inline]
RIP: 0010:vxlan_fdb_destroy+0xb4/0x1f0 drivers/net/vxlan.c:787
RSP: 0018:ffff88809093f150 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: ffff888099cc6180 RCX: ffffc90007fea000
RDX: 1bd5a00000000040 RSI: ffffffff83d8e2d2 RDI: ffff888099cc6188
RBP: 0000000000000000 R08: ffffffff8b9a6ee8 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200
R13: 0000000000000000 R14: ffff88809093f250 R15: ffff88804c64d400
FS:  00007f1f7703f700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000cd1370 CR3: 00000000a0c94000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __vxlan_dev_create+0x3b0/0x710 drivers/net/vxlan.c:3283
 vxlan_newlink+0xa3/0xe0 drivers/net/vxlan.c:3504
 rtnl_newlink+0xfab/0x1860 net/core/rtnetlink.c:2728
 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4320
 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2446
 netlink_unicast_kernel net/netlink/af_netlink.c:1294 [inline]
 netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1320
 netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1891
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 sock_no_sendpage+0xe2/0x110 net/core/sock.c:2613
 kernel_sendpage net/socket.c:3407 [inline]
 sock_sendpage+0xdf/0x140 net/socket.c:871
 pipe_to_sendpage+0x226/0x2d0 fs/splice.c:451
 splice_from_pipe_feed fs/splice.c:502 [inline]
 __splice_from_pipe+0x326/0x7a0 fs/splice.c:626
 splice_from_pipe fs/splice.c:661 [inline]
 generic_splice_sendpage+0xc1/0x110 fs/splice.c:832
 do_splice_from fs/splice.c:851 [inline]
 do_splice fs/splice.c:1147 [inline]
 SYSC_splice fs/splice.c:1402 [inline]
 SyS_splice+0xd59/0x1380 fs/splice.c:1382
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f1f786eb059
RSP: 002b:00007f1f7703f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00007f1f787fe030 RCX: 00007f1f786eb059
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f1f7874508d R08: 000000000004fff1 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc6b9e9eff R14: 00007f1f7703f300 R15: 0000000000022000
Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 11 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 09 01 00 00 48 85 ed 49 89 2c 24 74 28 e8 34 
RIP: __write_once_size include/linux/compiler.h:212 [inline] RSP: ffff88809093f150
RIP: __hlist_del include/linux/list.h:688 [inline] RSP: ffff88809093f150
RIP: hlist_del_rcu include/linux/rculist.h:427 [inline] RSP: ffff88809093f150
RIP: vxlan_fdb_destroy+0xb4/0x1f0 drivers/net/vxlan.c:787 RSP: ffff88809093f150
print_req_error: I/O error, dev loop4, sector 0
Buffer I/O error on dev loop4, logical block 0, async page read
print_req_error: I/O error, dev loop4, sector 2
Buffer I/O error on dev loop4, logical block 2, async page read
print_req_error: I/O error, dev loop4, sector 3
Buffer I/O error on dev loop4, logical block 3, async page read
print_req_error: I/O error, dev loop4, sector 4
Buffer I/O error on dev loop4, logical block 4, async page read
print_req_error: I/O error, dev loop4, sector 5
Buffer I/O error on dev loop4, logical block 5, async page read
print_req_error: I/O error, dev loop4, sector 6
Buffer I/O error on dev loop4, logical block 6, async page read
Buffer I/O error on dev loop4, logical block 7, async page read
EXT4-fs (loop4): couldn't mount as ext3 due to feature incompatibilities
qnx4: no qnx4 filesystem (no root dir).
EXT4-fs (loop4): VFS: Can't find ext4 filesystem
EXT4-fs (loop4): couldn't mount as ext3 due to feature incompatibilities
---[ end trace 490de4868c0d85fb ]---
----------------
Code disassembly (best guess), 4 bytes skipped:
   0:	df 48 89             	fisttps -0x77(%rax)
   3:	fa                   	cli
   4:	48 c1 ea 03          	shr    $0x3,%rdx
   8:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   c:	0f 85 11 01 00 00    	jne    0x123
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df
  1c:	4c 8b 63 08          	mov    0x8(%rbx),%r12
  20:	4c 89 e2             	mov    %r12,%rdx
  23:	48 c1 ea 03          	shr    $0x3,%rdx
* 27:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2b:	0f 85 09 01 00 00    	jne    0x13a
  31:	48 85 ed             	test   %rbp,%rbp
  34:	49 89 2c 24          	mov    %rbp,(%r12)
  38:	74 28                	je     0x62
  3a:	e8                   	.byte 0xe8
  3b:	34                   	.byte 0x34