------------[ cut here ]------------
sysfs: cannot create duplicate filename '/class/ieee80211/!3Ευ'
WARNING: CPU: 1 PID: 9658 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x7e/0xa0 fs/sysfs/dir.c:30
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 9658 Comm: syz-executor1 Not tainted 4.15.0-rc9+ #217
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+0x194/0x257 lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1dc/0x200 kernel/panic.c:547
 report_bug+0x211/0x2d0 lib/bug.c:184
 fixup_bug.part.11+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+0x22/0x40 arch/x86/entry/entry_64.S:1096
RIP: 0010:sysfs_warn_dup+0x7e/0xa0 fs/sysfs/dir.c:30
RSP: 0018:ffff8801b5fb6ea0 EFLAGS: 00010282
RAX: dffffc0000000008 RBX: ffff8801cd6fe5c0 RCX: ffffffff8159f08e
RDX: 00000000000037a0 RSI: ffffc900041e4000 RDI: 0000000000000216
RBP: ffff8801b5fb6eb8 R08: 1ffff10036bf6d67 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d7e66ec0
R13: ffff8801d87bec40 R14: 0000000000000001 R15: ffffffffffffffef
 sysfs_do_create_link_sd.isra.2+0xf3/0x110 fs/sysfs/symlink.c:51
 sysfs_do_create_link fs/sysfs/symlink.c:80 [inline]
 sysfs_create_link+0x65/0xc0 fs/sysfs/symlink.c:92
 device_add_class_symlinks drivers/base/core.c:1603 [inline]
 device_add+0x74a/0x1650 drivers/base/core.c:1801
 wiphy_register+0x1468/0x2050 net/wireless/core.c:806
 ieee80211_register_hw+0x1162/0x3100 net/mac80211/main.c:1041
 mac80211_hwsim_new_radio+0x1b39/0x2cd0 drivers/net/wireless/mac80211_hwsim.c:2756
 hwsim_new_radio_nl+0x67a/0x8c0 drivers/net/wireless/mac80211_hwsim.c:3213
 genl_family_rcv_msg+0x7b7/0xfb0 net/netlink/genetlink.c:599
 genl_rcv_msg+0xb2/0x140 net/netlink/genetlink.c:624
 netlink_rcv_skb+0x14b/0x380 net/netlink/af_netlink.c:2442
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635
 netlink_unicast_kernel net/netlink/af_netlink.c:1308 [inline]
 netlink_unicast+0x4c4/0x6b0 net/netlink/af_netlink.c:1334
 netlink_sendmsg+0xa4a/0xe60 net/netlink/af_netlink.c:1897
 sock_sendmsg_nosec net/socket.c:630 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:640
 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2046
 __sys_sendmsg+0xe5/0x210 net/socket.c:2080
 SYSC_sendmsg net/socket.c:2091 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2087
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007f4f64465c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000453299
RDX: 0000000000000000 RSI: 000000002001f000 RDI: 0000000000000014
RBP: 00000000000003d6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4cb0
R13: 00000000ffffffff R14: 00007f4f644666d4 R15: 0000000000000006
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..