Prohibit too big a size

bill88t · bill88t · commit b4ff08d18538 · 2023-02-18T23:56:06.000+02:00
diff --git a/main.c b/main.c
@@ -142,7 +142,7 @@ STATIC supervisor_allocation *allocate_pystack(safe_mode_t safe_mode) {
         (void)common_hal_os_getenv_int("CIRCUITPY_PYSTACK_SIZE", &pystack_size);
         // Check if value is valid
         pystack_size = pystack_size - pystack_size % sizeof(size_t); // Round down to multiple of 4.
-        if (pystack_size < 384) {
+        if ((pystack_size < 384) || (pystack_size > 900000)) {
             serial_write_compressed(translate("\nInvalid CIRCUITPY_PYSTACK_SIZE\n\n\r"));
             pystack_size = CIRCUITPY_PYSTACK_SIZE; // Reset
         }

Original file line number	Diff line number	Diff line change
`@@ -142,7 +142,7 @@ STATIC supervisor_allocation *allocate_pystack(safe_mode_t safe_mode) {`
`142`	`142`	`(void)common_hal_os_getenv_int("CIRCUITPY_PYSTACK_SIZE", &pystack_size);`
`143`	`143`	`// Check if value is valid`
`144`	`144`	`pystack_size = pystack_size - pystack_size % sizeof(size_t); // Round down to multiple of 4.`
`145`		`- if (pystack_size < 384) {`
	`145`	`+ if ((pystack_size < 384) \|\| (pystack_size > 900000)) {`
`146`	`146`	`serial_write_compressed(translate("\nInvalid CIRCUITPY_PYSTACK_SIZE\n\n\r"));`
`147`	`147`	`pystack_size = CIRCUITPY_PYSTACK_SIZE; // Reset`
`148`	`148`	`}`