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: 1 PID: 23687 Comm: syz-executor.2 Not tainted 4.14.218-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888095848580 task.stack: ffff8880a91f0000
RIP: 0010:__write_once_size syzkaller/managers/linux-4-14/kernel/./include/linux/compiler.h:210 [inline]
RIP: 0010:__hlist_del syzkaller/managers/linux-4-14/kernel/./include/linux/list.h:679 [inline]
RIP: 0010:hlist_del_rcu syzkaller/managers/linux-4-14/kernel/./include/linux/rculist.h:427 [inline]
RIP: 0010:vxlan_fdb_destroy+0xb4/0x1f0 syzkaller/managers/linux-4-14/kernel/drivers/net/vxlan.c:787
RSP: 0018:ffff8880a91f7150 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: ffff88809beaca80 RCX: ffffc90008bed000
RDX: 1bd5a00000000040 RSI: ffffffff83d6f342 RDI: ffff88809beaca88
RBP: 0000000000000000 R08: ffffffff8b9c1618 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200
R13: 0000000000000000 R14: ffff8880a91f7250 R15: ffff88805c0120c0
FS:  00007f54321e9700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffba4c4f00 CR3: 0000000092c84000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __vxlan_dev_create+0x3b0/0x710 syzkaller/managers/linux-4-14/kernel/drivers/net/vxlan.c:3281
 vxlan_newlink+0xa3/0xe0 syzkaller/managers/linux-4-14/kernel/drivers/net/vxlan.c:3502
 rtnl_newlink+0xf88/0x1830 syzkaller/managers/linux-4-14/kernel/net/core/rtnetlink.c:2728
 rtnetlink_rcv_msg+0x3be/0xb10 syzkaller/managers/linux-4-14/kernel/net/core/rtnetlink.c:4316
 netlink_rcv_skb+0x125/0x390 syzkaller/managers/linux-4-14/kernel/net/netlink/af_netlink.c:2433
 netlink_unicast_kernel syzkaller/managers/linux-4-14/kernel/net/netlink/af_netlink.c:1287 [inline]
 netlink_unicast+0x437/0x610 syzkaller/managers/linux-4-14/kernel/net/netlink/af_netlink.c:1313
 netlink_sendmsg+0x62e/0xb80 syzkaller/managers/linux-4-14/kernel/net/netlink/af_netlink.c:1878
 sock_sendmsg_nosec syzkaller/managers/linux-4-14/kernel/net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 syzkaller/managers/linux-4-14/kernel/net/socket.c:656
 sock_no_sendpage+0xe2/0x110 syzkaller/managers/linux-4-14/kernel/net/core/sock.c:2595
 kernel_sendpage syzkaller/managers/linux-4-14/kernel/net/socket.c:3407 [inline]
 sock_sendpage+0xdf/0x140 syzkaller/managers/linux-4-14/kernel/net/socket.c:871
 pipe_to_sendpage+0x226/0x2d0 syzkaller/managers/linux-4-14/kernel/fs/splice.c:451
 splice_from_pipe_feed syzkaller/managers/linux-4-14/kernel/fs/splice.c:502 [inline]
 __splice_from_pipe+0x326/0x7a0 syzkaller/managers/linux-4-14/kernel/fs/splice.c:626
 splice_from_pipe syzkaller/managers/linux-4-14/kernel/fs/splice.c:661 [inline]
 generic_splice_sendpage+0xc1/0x110 syzkaller/managers/linux-4-14/kernel/fs/splice.c:832
 do_splice_from syzkaller/managers/linux-4-14/kernel/fs/splice.c:851 [inline]
 do_splice syzkaller/managers/linux-4-14/kernel/fs/splice.c:1147 [inline]
 SYSC_splice syzkaller/managers/linux-4-14/kernel/fs/splice.c:1402 [inline]
 SyS_splice+0xd59/0x1380 syzkaller/managers/linux-4-14/kernel/fs/splice.c:1382
 do_syscall_64+0x1d5/0x640 syzkaller/managers/linux-4-14/kernel/arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x465b09
RSP: 002b:00007f54321e9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000465b09
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000004b069f R08: 000000000004ffe2 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008
R13: 00007ffc50de555f R14: 00007f54321e9300 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 f4 
RIP: __write_once_size syzkaller/managers/linux-4-14/kernel/./include/linux/compiler.h:210 [inline] RSP: ffff8880a91f7150
RIP: __hlist_del syzkaller/managers/linux-4-14/kernel/./include/linux/list.h:679 [inline] RSP: ffff8880a91f7150
RIP: hlist_del_rcu syzkaller/managers/linux-4-14/kernel/./include/linux/rculist.h:427 [inline] RSP: ffff8880a91f7150
RIP: vxlan_fdb_destroy+0xb4/0x1f0 syzkaller/managers/linux-4-14/kernel/drivers/net/vxlan.c:787 RSP: ffff8880a91f7150
---[ end trace 0a3b110a4481d7bf ]---