netlink: 64 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 64 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 64 bytes leftover after parsing attributes in process `syz-executor.4'.
IPVS: ftp: loaded support on port[0] = 21
WARNING: CPU: 0 PID: 7209 at drivers/net/geneve.c:1661 rcu_read_unlock include/linux/rcupdate.h:683 [inline]
WARNING: CPU: 0 PID: 7209 at drivers/net/geneve.c:1661 net_generic include/net/netns/generic.h:47 [inline]
WARNING: CPU: 0 PID: 7209 at drivers/net/geneve.c:1661 geneve_destroy_tunnels drivers/net/geneve.c:1643 [inline]
WARNING: CPU: 0 PID: 7209 at drivers/net/geneve.c:1661 geneve_exit_batch_net+0x50e/0x6d0 drivers/net/geneve.c:1671
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 7209 Comm: kworker/u4:5 Not tainted 4.15.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x145/0x1e1 lib/dump_stack.c:53
 panic+0x1a9/0x34e kernel/panic.c:183
 __warn.cold.8+0x120/0x156 kernel/panic.c:547
 report_bug+0x1a3/0x230 lib/bug.c:184
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1bd/0x460 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1061
RIP: 0010:geneve_destroy_tunnels drivers/net/geneve.c:1661 [inline]
RIP: 0010:geneve_exit_batch_net+0x50e/0x6d0 drivers/net/geneve.c:1671
RSP: 0018:ffff88009a1bf148 EFLAGS: 00010212
RAX: ffff88008cdaf710 RBX: dffffc0000000000 RCX: ffff88008cdaf660
RDX: 1ffff100119b5ee2 RSI: ffff88009a1bf220 RDI: ffff8800826aa6b8
RBP: ffff88009a1bf288 R08: ffff88009a1bf228 R09: 0000000000000008
R10: 41cfa2db51344198 R11: ffff880087a38580 R12: ffff880082e96040
R13: ffff880082289308 R14: ffffed0013437e3c R15: 1ffff10013437e34
 ops_exit_list.isra.8+0xd3/0x120 net/core/net_namespace.c:145
 cleanup_net+0x55b/0xa90 net/core/net_namespace.c:484
 process_one_work+0x9c3/0x1a40 kernel/workqueue.c:2112
 worker_thread+0x212/0x18f0 kernel/workqueue.c:2246
 kthread+0x316/0x3d0 kernel/kthread.c:238
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:515
Kernel Offset: disabled
Rebooting in 86400 seconds..