signalfd4(0xffffffffffffffff, &(0x7f0000000640), 0x8, 0x0)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r0, &(0x7f0000000100)={0x1f, 0x0, 0x1}, 0x6)
write$bt_hci(r0, &(0x7f0000000000)=ANY=[@ANYRES16=r0], 0x6)