pffault User-Space Fault Test
pffault makes one access to a kernel address from a user task. In a
protected or kernel build, the access must fault, the kernel must terminate
only this task, and the shell must keep running. pffault prints the
access before it makes it. If the access returns, pffault prints that,
and the build did not stop it. For a test with a control target and
resource checks, see sandbox Protected-Build Containment Test.
Usage:
pffault [r|w] [<address>]
w writes the address; any other first argument reads it. To give an
address, give the first argument too. The default address is
0x3fc98000, the base of the kernel DRAM of the ESP32-S3. Give an address
for other chips.
Configuration
CONFIG_EXAMPLES_PFFAULT– Enable the test.CONFIG_EXAMPLES_PFFAULT_PROGNAME,CONFIG_EXAMPLES_PFFAULT_PRIORITYandCONFIG_EXAMPLES_PFFAULT_STACKSIZE– Program name, priority and stack size.