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#include "test/jemalloc_test.h"
#include "jemalloc/internal/safety_check.h"
/*
* Note that we get called through safety_check.sh, which turns on sampling for
* everything.
*/
bool fake_abort_called;
void fake_abort(const char *message) {
(void)message;
fake_abort_called = true;
}
static void
buffer_overflow_write(char *ptr, size_t size) {
/* Avoid overflow warnings. */
volatile size_t idx = size;
ptr[idx] = 0;
}
TEST_BEGIN(test_malloc_free_overflow) {
test_skip_if(!config_prof);
test_skip_if(!config_opt_safety_checks);
safety_check_set_abort(&fake_abort);
/* Buffer overflow! */
char* ptr = malloc(128);
buffer_overflow_write(ptr, 128);
free(ptr);
safety_check_set_abort(NULL);
expect_b_eq(fake_abort_called, true, "Redzone check didn't fire.");
fake_abort_called = false;
}
TEST_END
TEST_BEGIN(test_mallocx_dallocx_overflow) {
test_skip_if(!config_prof);
test_skip_if(!config_opt_safety_checks);
safety_check_set_abort(&fake_abort);
/* Buffer overflow! */
char* ptr = mallocx(128, 0);
buffer_overflow_write(ptr, 128);
dallocx(ptr, 0);
safety_check_set_abort(NULL);
expect_b_eq(fake_abort_called, true, "Redzone check didn't fire.");
fake_abort_called = false;
}
TEST_END
TEST_BEGIN(test_malloc_sdallocx_overflow) {
test_skip_if(!config_prof);
test_skip_if(!config_opt_safety_checks);
safety_check_set_abort(&fake_abort);
/* Buffer overflow! */
char* ptr = malloc(128);
buffer_overflow_write(ptr, 128);
sdallocx(ptr, 128, 0);
safety_check_set_abort(NULL);
expect_b_eq(fake_abort_called, true, "Redzone check didn't fire.");
fake_abort_called = false;
}
TEST_END
TEST_BEGIN(test_realloc_overflow) {
test_skip_if(!config_prof);
test_skip_if(!config_opt_safety_checks);
safety_check_set_abort(&fake_abort);
/* Buffer overflow! */
char* ptr = malloc(128);
buffer_overflow_write(ptr, 128);
ptr = realloc(ptr, 129);
safety_check_set_abort(NULL);
free(ptr);
expect_b_eq(fake_abort_called, true, "Redzone check didn't fire.");
fake_abort_called = false;
}
TEST_END
TEST_BEGIN(test_rallocx_overflow) {
test_skip_if(!config_prof);
test_skip_if(!config_opt_safety_checks);
safety_check_set_abort(&fake_abort);
/* Buffer overflow! */
char* ptr = malloc(128);
buffer_overflow_write(ptr, 128);
ptr = rallocx(ptr, 129, 0);
safety_check_set_abort(NULL);
free(ptr);
expect_b_eq(fake_abort_called, true, "Redzone check didn't fire.");
fake_abort_called = false;
}
TEST_END
TEST_BEGIN(test_xallocx_overflow) {
test_skip_if(!config_prof);
test_skip_if(!config_opt_safety_checks);
safety_check_set_abort(&fake_abort);
/* Buffer overflow! */
char* ptr = malloc(128);
buffer_overflow_write(ptr, 128);
size_t result = xallocx(ptr, 129, 0, 0);
expect_zu_eq(result, 128, "");
free(ptr);
expect_b_eq(fake_abort_called, true, "Redzone check didn't fire.");
fake_abort_called = false;
safety_check_set_abort(NULL);
}
TEST_END
TEST_BEGIN(test_realloc_no_overflow) {
char* ptr = malloc(128);
ptr = realloc(ptr, 256);
ptr[128] = 0;
ptr[255] = 0;
free(ptr);
ptr = malloc(128);
ptr = realloc(ptr, 64);
ptr[63] = 0;
ptr[0] = 0;
free(ptr);
}
TEST_END
TEST_BEGIN(test_rallocx_no_overflow) {
char* ptr = malloc(128);
ptr = rallocx(ptr, 256, 0);
ptr[128] = 0;
ptr[255] = 0;
free(ptr);
ptr = malloc(128);
ptr = rallocx(ptr, 64, 0);
ptr[63] = 0;
ptr[0] = 0;
free(ptr);
}
TEST_END
int
main(void) {
return test(
test_malloc_free_overflow,
test_mallocx_dallocx_overflow,
test_malloc_sdallocx_overflow,
test_realloc_overflow,
test_rallocx_overflow,
test_xallocx_overflow,
test_realloc_no_overflow,
test_rallocx_no_overflow);
}
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