user_alloc 190 drivers/misc/lkdtm/usercopy.c unsigned long user_alloc; user_alloc 211 drivers/misc/lkdtm/usercopy.c user_alloc = vm_mmap(NULL, 0, PAGE_SIZE, user_alloc 214 drivers/misc/lkdtm/usercopy.c if (user_alloc >= TASK_SIZE) { user_alloc 218 drivers/misc/lkdtm/usercopy.c user_addr = (void __user *)user_alloc; user_alloc 253 drivers/misc/lkdtm/usercopy.c vm_munmap(user_alloc, PAGE_SIZE);