35     mm::{verify_area, MemoryManagementArch, VirtAddr},
236                 let res = if frame.is_from_user() && verify_area(virt_addr, len).is_err() {  in handle()
260                     && (verify_area(virt_path_ptr, MAX_PATHLEN).is_err()  in handle()
261                         || verify_area(virt_argv_ptr, PAGE_4K_SIZE).is_err())  in handle()
262                     || verify_area(virt_env_ptr, PAGE_4K_SIZE).is_err()  in handle()
310                     && (verify_area(virt_req, core::mem::size_of::<PosixTimeSpec>()).is_err()  in handle()
311                         || verify_area(virt_rem, core::mem::size_of::<PosixTimeSpec>()).is_err())  in handle()
435                 if verify_area(virt_optval, optlen).is_err() {  in handle()
450                     if verify_area(virt_optval, PAGE_4K_SIZE).is_err() {  in handle()
456                     if verify_area(virt_optlen, core::mem::size_of::<u32>()).is_err() {  in handle()
475                 if verify_area(virt_addr, addrlen).is_err() {  in handle()
487                 if verify_area(virt_addr, addrlen).is_err() {  in handle()
504                 if verify_area(virt_buf, len).is_err() || verify_area(virt_addr, addrlen).is_err() {  in handle()
524                     if verify_area(virt_buf, len).is_err() {  in handle()
530                     if verify_area(virt_addrlen, core::mem::size_of::<u32>()).is_err() {  in handle()
535                     if verify_area(virt_addr, core::mem::size_of::<SockAddr>()).is_err() {  in handle()
588                 if verify_area(virt_addr, len).is_err() {  in handle()
635                     verify_area(VirtAddr::new(buf as usize), size)?;  in handle()
656                 match verify_area(vaddr, core::mem::size_of::<PosixKstat>()) {  in handle()
703                 verify_area(parent_tid, core::mem::size_of::<i32>())?;  in handle()
704                 verify_area(child_tid, core::mem::size_of::<i32>())?;  in handle()