Bluetooth: hci5: command 0x0409 tx timeout
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WARNING: CPU: 1 PID: 18972 at drivers/net/ipvlan/ipvlan_main.c:65 ipvlan_unregister_nf_hook.cold+0x11/0x18 drivers/net/ipvlan/ipvlan_main.c:65
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 18972 Comm: kworker/u4:11 Not tainted 4.19.207-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:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x5a kernel/panic.c:541
 report_bug+0x262/0x2b0 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:ipvlan_unregister_nf_hook.cold+0x11/0x18 drivers/net/ipvlan/ipvlan_main.c:65
Code: c6 08 0f b7 f6 e8 d9 d1 f2 ff e9 de d8 42 fc 4c 89 e7 e8 46 96 97 f9 eb d6 e8 6f bc 61 f9 48 c7 c7 00 8e da 88 e8 b9 d1 f2 ff <0f> 0b e9 3f 04 43 fc e8 57 bc 61 f9 48 c7 c7 c0 ab da 88 e8 a1 d1
RSP: 0018:ffff888045b6f918 EFLAGS: 00010282
RAX: 0000000000000024 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff814e0e41 RDI: ffffed1008b6df15
RBP: ffff888043a4c100 R08: 0000000000000024 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880a9526dc0
R13: ffff8880b4052000 R14: ffffffff8443e2f0 R15: ffff888045b6fa50
 ipvlan_port_destroy drivers/net/ipvlan/ipvlan_main.c:166 [inline]
 ipvlan_uninit+0x45f/0x5a0 drivers/net/ipvlan/ipvlan_main.c:244
 rollback_registered_many+0x927/0xe70 net/core/dev.c:8210
 unregister_netdevice_many.part.0+0x1a/0x300 net/core/dev.c:9324
 unregister_netdevice_many net/core/dev.c:9323 [inline]
 default_device_exit_batch+0x2fa/0x3c0 net/core/dev.c:9795
 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:156
 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:554
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Kernel Offset: disabled
Rebooting in 86400 seconds..