IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
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: 10937 Comm: syz-executor.4 Not tainted 4.14.301-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
task: ffff88804d4fa140 task.stack: ffff88804dc48000
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:ffff88804dc4f150 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: ffff8880ab604f80 RCX: ffffc900082ff000
RDX: 1bd5a00000000040 RSI: ffffffff83d8fa62 RDI: ffff8880ab604f88
RBP: 0000000000000000 R08: ffffffff8b9a61e8 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200
R13: 0000000000000000 R14: ffff88804dc4f250 R15: ffff8880aff7d3c0
FS:  00007f3d78605700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2de25000 CR3: 00000000af81d000 CR4: 00000000003406f0
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+0xf7c/0x1830 net/core/rtnetlink.c:2730
 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4322
 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2454
 netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline]
 netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322
 netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893
 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:2610
 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+0x5e/0xd3
RIP: 0033:0x7f3d7a0b40d9
RSP: 002b:00007f3d78605168 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00007f3d7a1d4050 RCX: 00007f3d7a0b40d9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f3d7a10fae9 R08: 000000000004fff1 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe58dd8aef R14: 00007f3d78605300 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 74 
RIP: __write_once_size include/linux/compiler.h:212 [inline] RSP: ffff88804dc4f150
RIP: __hlist_del include/linux/list.h:688 [inline] RSP: ffff88804dc4f150
RIP: hlist_del_rcu include/linux/rculist.h:427 [inline] RSP: ffff88804dc4f150
RIP: vxlan_fdb_destroy+0xb4/0x1f0 drivers/net/vxlan.c:787 RSP: ffff88804dc4f150
---[ end trace 7eea53966502c2e1 ]---
----------------
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:	74                   	.byte 0x74