LD [M]  sound/usb/usx2y/snd-usb-usx2y.ko
  LD [M]  sound/x86/snd-hdmi-lpe-audio.ko
  LD [M]  sound/xen/snd_xen_front.ko
  LD [M]  ubuntu/hio/hio.ko
  LD [M]  ubuntu/xr-usb-serial/xr_usb_serial_common.ko
make[2]: Leaving directory '/home/test_ker//kernel_src/ubuntu-focal/debian/build/build-generic'
Makefile:179: recipe for target 'sub-make' failed
make[1]: *** [sub-make] Error 2
make[1]: Leaving directory '/home/test_ker//kernel_src/ubuntu-focal'
debian/rules.d/2-binary-arch.mk:52: recipe for target '/home/test_ker/kernel_src/ubuntu-focal/debian/stamps/stamp-build-generic' failed
make: *** [/home/test_ker//kernel_src/ubuntu-focal/debian/stamps/stamp-build-generic] Error 2