RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000015
R13: 000000000000053d R14: 00000000006fbe58 R15: 0000000000000010
------------[ cut here ]------------
kobject_add_internal failed for hwsim56 (error: -12 parent: mac80211_hwsim)
WARNING: CPU: 0 PID: 12700 at lib/kobject.c:242 kobject_add_internal+0x10fc/0x1700 lib/kobject.c:240
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 12700 Comm: syz-executor4 Not tainted 4.16.0+ #87
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+0x185/0x1d0 lib/dump_stack.c:53
 panic+0x39d/0x940 kernel/panic.c:183
 __warn+0x40f/0x580 kernel/panic.c:547
 report_bug+0x72a/0x880 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 do_error_trap+0x1aa/0x600 arch/x86/kernel/traps.c:297
 do_invalid_op+0x46/0x50 arch/x86/kernel/traps.c:316
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:986
RIP: 0010:kobject_add_internal+0x10fc/0x1700 lib/kobject.c:240
RSP: 0018:ffff8801a559edf8 EFLAGS: 00010282
RAX: 000000000000004b RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffffc9000239e000 RSI: 000000000001e45a RDI: 000000000001e45b
RBP: ffff8801a559ee90 R08: 0000000001080020 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000fffffff4 R14: ffffffff8a8be653 R15: ffff88014a51a698
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_add+0x413/0x480 lib/kobject.c:409
 device_add+0x8dc/0x2cb0 drivers/base/core.c:1787
 device_create_groups_vargs drivers/base/core.c:2430 [inline]
 device_create_vargs drivers/base/core.c:2470 [inline]
 device_create+0x59d/0x630 drivers/base/core.c:2506
 mac80211_hwsim_new_radio+0x5c0/0x49f0 drivers/net/wireless/mac80211_hwsim.c:2556
 hwsim_new_radio_nl+0x8fd/0xa20 drivers/net/wireless/mac80211_hwsim.c:3214
 genl_family_rcv_msg net/netlink/genetlink.c:599 [inline]
 genl_rcv_msg+0x1686/0x1810 net/netlink/genetlink.c:624
 netlink_rcv_skb+0x378/0x600 net/netlink/af_netlink.c:2447
 genl_rcv+0x63/0x80 net/netlink/genetlink.c:635
 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
 netlink_unicast+0x166b/0x1740 net/netlink/af_netlink.c:1337
 netlink_sendmsg+0x1048/0x1310 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec net/socket.c:630 [inline]
 sock_sendmsg net/socket.c:640 [inline]
 ___sys_sendmsg+0xec0/0x1310 net/socket.c:2046
 __sys_sendmsg net/socket.c:2080 [inline]
 SYSC_sendmsg+0x2a3/0x3d0 net/socket.c:2091
 SyS_sendmsg+0x54/0x80 net/socket.c:2087
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x455979
RSP: 002b:00007fd8ef423c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fd8ef4246d4 RCX: 0000000000455979
RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000015
R13: 000000000000053d R14: 00000000006fbe58 R15: 0000000000000010
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..