r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
dup2(r0, r1)
r2 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000080)='mounts\x00')
sendfile(r1, r2, 0x0, 0xffd0)