RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000380 R14: 00000000006f74a0 R15: 0000000000000006
------------[ cut here ]------------
kobject_add_internal failed for brport (error: -12 parent: bridge0.0)
WARNING: CPU: 1 PID: 1286 at lib/kobject.c:242 kobject_add_internal+0x3f6/0xbc0 lib/kobject.c:240
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 1286 Comm: syz-executor7 Not tainted 4.16.0-rc6+ #288
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+0x194/0x24d lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1dc/0x200 kernel/panic.c:547
 report_bug+0x1f4/0x2b0 lib/bug.c:186
 fixup_bug.part.10+0x37/0x80 arch/x86/kernel/traps.c:178
 fixup_bug arch/x86/kernel/traps.c:247 [inline]
 do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:986
RIP: 0010:kobject_add_internal+0x3f6/0xbc0 lib/kobject.c:240
RSP: 0018:ffff880194157560 EFLAGS: 00010286
RAX: dffffc0000000008 RBX: ffff8801cd848eb8 RCX: ffffffff815b1cde
RDX: 0000000000040000 RSI: ffffc90008cd7000 RDI: 1ffff1003282ae31
RBP: ffff880194157658 R08: 0000000000000000 R09: 1ffff1003282ae03
R10: ffff880194156d60 R11: ffffffff88583118 R12: 1ffff1003282aeb2
R13: 00000000fffffff4 R14: ffff880197bb2f28 R15: ffff8801d6d5d600
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_init_and_add+0xf9/0x150 lib/kobject.c:436
 br_add_if+0x79a/0x1a70 net/bridge/br_if.c:551
 add_del_if+0xf4/0x140 net/bridge/br_ioctl.c:101
 br_dev_ioctl+0xa2/0xc0 net/bridge/br_ioctl.c:396
 dev_ifsioc+0x333/0x9b0 net/core/dev_ioctl.c:334
 dev_ioctl+0x176/0xbe0 net/core/dev_ioctl.c:500
 sock_do_ioctl+0x1ba/0x390 net/socket.c:980
kernel msg: ebtables bug: please report to author: bad policy
 sock_ioctl+0x367/0x670 net/socket.c:1081
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x454e79
RSP: 002b:00007f70cf31cc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f70cf31d6d4 RCX: 0000000000454e79
RDX: 0000000020000480 RSI: 00000080000089a2 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000380 R14: 00000000006f74a0 R15: 0000000000000006
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..