This is running the barebox sandbox:

  Thread 1 "barebox" received signal SIGSEGV, Segmentation fault.
  0x0000555555579e2b in _strchr (s=s@entry=0x0, c=c@entry=44) at lib/string.c:251
  251		for(; *s != (char) c; ++s)
  (gdb) bt
  #0  0x0000555555579e2b in _strchr (s=s@entry=0x0, c=c@entry=44) at lib/string.c:251
  #1  0x000055555556fd91 in of_get_machine_compatible () at drivers/of/base.c:2380
  #2  0x000055555556fda8 in of_init_hostname () at drivers/of/base.c:2389
  #3  0x000055555555f9e6 in start_barebox () at common/startup.c:106
  #4  0x00005555555a291a in main ()
  (gdb) fr 1
  #1  0x000055555556fd91 in of_get_machine_compatible () at drivers/of/base.c:2380
  2380		p = strchr(name, ',');

Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>