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#include <unistd.h>
#include <darwintest.h>
#include <mach/mach.h>
T_GLOBAL_META(
T_META_NAMESPACE("xnu.ipc"),
T_META_RADAR_COMPONENT_NAME("xnu"),
T_META_RADAR_COMPONENT_VERSION("IPC"),
T_META_RUN_CONCURRENTLY(true),
T_META_TAG_VM_PREFERRED);
static mach_port_t
create_voucher(void)
{
mach_voucher_attr_recipe_data_t dummy_voucher = {
.key = MACH_VOUCHER_ATTR_KEY_IMPORTANCE,
.command = MACH_VOUCHER_ATTR_IMPORTANCE_SELF,
.previous_voucher = MACH_VOUCHER_NULL,
.content_size = 0,
};
mach_port_t port = MACH_PORT_NULL;
kern_return_t kr = host_create_mach_voucher(mach_host_self(),
(mach_voucher_attr_raw_recipe_array_t)&dummy_voucher,
sizeof(dummy_voucher), &port);
T_ASSERT_MACH_SUCCESS(kr, "alloc voucher");
return port;
}
T_DECL(mach_port_notification_dead_name_double_free, "Test mach_port_request_notification with a dead name port")
{
kern_return_t kr;
mach_port_t dead_port;
mach_port_t voucher_port;
kr = mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_DEAD_NAME, &dead_port);
T_ASSERT_MACH_SUCCESS(kr, "alloc dead port");
voucher_port = create_voucher();
T_ASSERT_NE(voucher_port, MACH_PORT_NULL, "voucher not null");
/* trigger crash via double-free: see rdar://99779706 */
mach_port_request_notification(mach_task_self(),
voucher_port,
MACH_NOTIFY_PORT_DESTROYED,
0, dead_port, MACH_MSG_TYPE_PORT_SEND_ONCE, 0);
T_PASS("Kernel didn't crash!");
}