------------[ cut here ]------------
WARNING: CPU: 0 PID: 395 at drivers/net/ipvlan/ipvlan_l3s.c:148 ipvlan_unregister_nf_hook drivers/net/ipvlan/ipvlan_l3s.c:148 [inline]
WARNING: CPU: 0 PID: 395 at drivers/net/ipvlan/ipvlan_l3s.c:148 ipvlan_l3s_unregister+0x144/0x190 drivers/net/ipvlan/ipvlan_l3s.c:221
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 395 Comm: kworker/u4:3 Not tainted 5.8.0-rc1-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+0x10f/0x19d lib/dump_stack.c:118
 panic+0x1f8/0x63a kernel/panic.c:231
 __warn+0x209/0x240 kernel/panic.c:600
 report_bug+0x2b4/0x350 lib/bug.c:198
 exc_invalid_op+0x16c/0x1c0 arch/x86/kernel/traps.c:235
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:563
RIP: 0010:ipvlan_unregister_nf_hook drivers/net/ipvlan/ipvlan_l3s.c:148 [inline]
RIP: 0010:ipvlan_l3s_unregister+0x144/0x190 drivers/net/ipvlan/ipvlan_l3s.c:221
Code: bf f5 01 49 8d bc 24 00 02 00 00 e8 e6 80 26 fe 49 c7 84 24 00 02 00 00 00 00 00 00 5b 41 5c 41 5e 41 5f 5d c3 e8 dc 56 17 fe <0f> 0b eb d5 e8 d3 56 17 fe 48 c7 c7 b1 d0 f0 87 e8 f7 77 26 fe c6
RSP: 0018:ffffc9000185fbd8 EFLAGS: 00010293
RAX: ffffffff8330b5c4 RBX: 0000000000000000 RCX: ffff88812a9f1080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888109573c00 R08: ffffffff8330b560 R09: 000088810d256e23
R10: 0000ffffffffffff R11: ffff88812a9f1080 R12: ffff8880ba2d9000
R13: ffffc9000185fcf0 R14: ffff8881095a00c0 R15: ffff88810d256e20
 ipvlan_port_destroy drivers/net/ipvlan/ipvlan_main.c:97 [inline]
 ipvlan_uninit+0xdd/0x220 drivers/net/ipvlan/ipvlan_main.c:163
 rollback_registered_many+0x9b4/0xce0 net/core/dev.c:8983
 unregister_netdevice_many net/core/dev.c:10104 [inline]
 default_device_exit_batch+0x250/0x3e0 net/core/dev.c:10587
 ops_exit_list net/core/net_namespace.c:189 [inline]
 cleanup_net+0x4dc/0x8c0 net/core/net_namespace.c:603
 process_one_work+0x3cb/0x990 kernel/workqueue.c:2269
 worker_thread+0x665/0xbe0 kernel/workqueue.c:2415
 kthread+0x210/0x220 kernel/kthread.c:291
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
Kernel Offset: disabled