IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready
device veth0_macvtap entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready
netlink: 96 bytes leftover after parsing attributes in process `syz-executor.2'.
WARNING: CPU: 0 PID: 7266 at net/sched/sch_cbq.c:1412 cbq_destroy_class+0xe4/0x110 net/sched/sch_cbq.c:1420
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 7266 Comm: syz-executor.2 Not tainted 4.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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:177 [inline]
 do_error_trap+0x1bd/0x460 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x18/0x20 arch/x86/entry/entry_64.S:926
RIP: 0010:cbq_destroy_class+0xe4/0x110 net/sched/sch_cbq.c:1412
RSP: 0018:ffff88009065f078 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff8800a37a2b20 RCX: ffff8800a7e68dc0
RDX: 1ffff100146f4588 RSI: ffff8800a37a2b20 RDI: ffff8800a37a2c40
RBP: ffff88009065f088 R08: ffff8800a19d4a58 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8800a19d4140 R12: ffff8800a37a2900
R13: 0000000000000000 R14: 0000000000000000 R15: ffffed00146f4558
 cbq_destroy+0x1ff/0x2e0 net/sched/sch_cbq.c:1446
 qdisc_destroy+0x110/0x3b0 net/sched/sch_generic.c:725
 notify_and_destroy+0x34/0x40 net/sched/sch_api.c:885
 qdisc_graft+0x350/0xca0 net/sched/sch_api.c:949
 tc_modify_qdisc+0x908/0x1859 net/sched/sch_api.c:1434
 rtnetlink_rcv_msg+0x50e/0xee0 net/core/rtnetlink.c:4411
 netlink_rcv_skb+0x211/0x490 net/netlink/af_netlink.c:2405
 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:4423
 netlink_unicast_kernel net/netlink/af_netlink.c:1272 [inline]
 netlink_unicast+0x424/0x630 net/netlink/af_netlink.c:1298
 netlink_sendmsg+0x8c3/0xe80 net/netlink/af_netlink.c:1861
 sock_sendmsg_nosec net/socket.c:632 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:642
 kernel_sendmsg+0x26/0x30 net/socket.c:650
 sock_no_sendpage+0x1a8/0x260 net/core/sock.c:2571
 kernel_sendpage+0x60/0xd0 net/socket.c:3386
 sock_sendpage+0x73/0xd0 net/socket.c:857
 pipe_to_sendpage+0x228/0x4e0 fs/splice.c:451
 splice_from_pipe_feed fs/splice.c:502 [inline]
 __splice_from_pipe+0x2cb/0x720 fs/splice.c:626
 splice_from_pipe+0x1a7/0x300 fs/splice.c:661
 generic_splice_sendpage+0x10/0x20 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+0x740/0x1930 fs/splice.c:1382
 entry_SYSCALL_64_fastpath+0x23/0x9a
RIP: 0033:0x45b349
RSP: 002b:00007fb4ea339c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00007fb4ea33a6d4 RCX: 000000000045b349
RDX: 0000000000000009 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 0000000000000086 R08: 000000000004ffe0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff7b12761f R14: 00007fb4ea33a9c0 R15: 000000000075bfd4
Kernel Offset: disabled
Rebooting in 86400 seconds..