PintOS Project 3-4: VIRTUAL MEMORY - Stack Growth

손찬호·2024년 6월 10일
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../include/vm/vm.h

#define STACK_LIMIT (USER_STACK - (1<<20))

스택의 주소 범위를 제한해줄 매크로 상수 STACK_LIMIT을
선언해주었다.

../userprog/exception.c

page_fault()

static void
page_fault (struct intr_frame *f) {
	bool not_present;  /* True: not-present page, false: writing r/o page. */
	bool write;        /* True: access was write, false: access was read. */
	bool user;         /* True: access by user, false: access by kernel. */
	void *fault_addr;  /* Fault address. */

	/* Obtain faulting address, the virtual address that was
	   accessed to cause the fault.  It may point to code or to
	   data.  It is not necessarily the address of the instruction
	   that caused the fault (that's f->rip). */

	fault_addr = (void *) rcr2();

	/* Turn interrupts back on (they were only off so that we could
	   be assured of reading CR2 before it changed). */
	intr_enable ();


	/* Determine cause. */
	not_present = (f->error_code & PF_P) == 0;
	write = (f->error_code & PF_W) != 0;
	user = (f->error_code & PF_U) != 0;


#ifdef VM
	/* For project 3 and later. */
	if (vm_try_handle_fault (f, fault_addr, user, write, not_present))
		return;
	else{
		page_fault_cnt++;
		exit(-1);
	}
#endif

	/* Count page faults. */
	page_fault_cnt++;
	/* 페이지 폴트 발생 시 exit(-1) 호출 */
	exit(-1);

	/* If the fault is true fault, show info and exit. */
	printf ("Page fault at %p: %s error %s page in %s context.\n",
			fault_addr,
			not_present ? "not present" : "rights violation",
			write ? "writing" : "reading",
			user ? "user" : "kernel");
	kill (f);
}

../vm/vm.c

vm_try_handle_fault()

/* 페이지 폴트를 처리, addr에 대응된 페이지를 찾아  claim한다. */
bool
vm_try_handle_fault (struct intr_frame *f UNUSED, void *addr UNUSED,
		bool user UNUSED, bool write UNUSED, bool not_present UNUSED) {
	struct supplemental_page_table *spt UNUSED = &thread_current ()->spt;
	struct page *page = NULL;
	/* TODO: Validate the fault */
	/* TODO: Your code goes here */

	page = spt_find_page(&thread_current()->spt, addr);
	/* 주소를 검증한다. */
	if (addr == NULL || is_kernel_vaddr(addr)){
		return false;
	}

	if (not_present){ // 페이지가 없는 경우
		// bogus page fault: 페이지 테이블이 가리키는 주소가 디스크에는 있지만 메모리에 없는 경우
		void *rsp = user ? f->rsp : thread_current()->stack_pointer;

		if (STACK_LIMIT <= rsp - 8 && rsp - 8 <= addr && addr <= USER_STACK){
			vm_stack_growth(addr);
			return true;
		}

        page = spt_find_page(spt, addr);
        if (page == NULL)
            return false;
        if (write == 1 && page->writable == 0)
            return false;
        return vm_do_claim_page(page);
    }
    return false;
}

vm_stack_growth()

/* Growing the stack. */
static void
vm_stack_growth (void *addr UNUSED) {
	bool success = false;
	addr = pg_round_down(addr);
    if (vm_alloc_page(VM_ANON | VM_MARKER_0, addr, true)) {
        success = vm_claim_page(addr);

        if (success) {
            thread_current()->stack_bottom -= PGSIZE;
        }
    }
}

../userprog/syscall.c

syscall_handler()

/* 유저 스택에 저장된 시스템콜 번호에 따라 시스템콜을 호출하는 함수 */
void
syscall_handler (struct intr_frame *f UNUSED) {
	// TODO: Your implementation goes here.
	// printf("system call!\n");
	// thread_exit();
	#ifdef VM
		thread_current()->stack_pointer = f->rsp;
	#endif

	int syscall_num = f->R.rax;
	switch (syscall_num) {
		case SYS_HALT:
			halt();
			break;
		case SYS_EXIT:
			exit(f->R.rdi);
			break;
		case SYS_FORK:
			f->R.rax = fork(f->R.rdi, f);
			break;
		case SYS_EXEC:
			f->R.rax = exec(f->R.rdi);
			break;
		case SYS_WAIT:
			f->R.rax = wait(f->R.rdi);
			break; 
		case SYS_CREATE:
			f->R.rax = create(f->R.rdi, f->R.rsi);
			break;
		case SYS_REMOVE:
			f->R.rax = remove(f->R.rdi);
			break;
		case SYS_OPEN:
			f->R.rax = open(f->R.rdi);
			break;
		case SYS_FILESIZE:
			f->R.rax = filesize(f->R.rdi);
			break;
		case SYS_READ:
			f->R.rax = read(f->R.rdi, f->R.rsi, f->R.rdx);
			break;  
		case SYS_WRITE:      
			f->R.rax = write(f->R.rdi, f->R.rsi, f->R.rdx);
			break;
		case SYS_SEEK:
			seek(f->R.rdi, f->R.rsi);
			break;
		case SYS_TELL:
			f->R.rax = tell(f->R.rdi);
			break;
		case SYS_CLOSE:
			close(f->R.rdi);
			break;
		default:
			exit(-1);
			break;
  	}
}

중간 테스트 결과

pass tests/userprog/args-none
pass tests/userprog/args-single
pass tests/userprog/args-multiple
pass tests/userprog/args-many
pass tests/userprog/args-dbl-space
pass tests/userprog/halt
pass tests/userprog/exit
pass tests/userprog/create-normal
pass tests/userprog/create-empty
pass tests/userprog/create-null
pass tests/userprog/create-bad-ptr
pass tests/userprog/create-long
pass tests/userprog/create-exists
pass tests/userprog/create-bound
pass tests/userprog/open-normal
pass tests/userprog/open-missing
pass tests/userprog/open-boundary
pass tests/userprog/open-empty
pass tests/userprog/open-null
pass tests/userprog/open-bad-ptr
pass tests/userprog/open-twice
pass tests/userprog/close-normal
pass tests/userprog/close-twice
pass tests/userprog/close-bad-fd
pass tests/userprog/read-normal
pass tests/userprog/read-bad-ptr
pass tests/userprog/read-boundary
pass tests/userprog/read-zero
pass tests/userprog/read-stdout
pass tests/userprog/read-bad-fd
pass tests/userprog/write-normal
pass tests/userprog/write-bad-ptr
pass tests/userprog/write-boundary
pass tests/userprog/write-zero
pass tests/userprog/write-stdin
pass tests/userprog/write-bad-fd
pass tests/userprog/fork-once
pass tests/userprog/fork-multiple
pass tests/userprog/fork-recursive
pass tests/userprog/fork-read
pass tests/userprog/fork-close
pass tests/userprog/fork-boundary
pass tests/userprog/exec-once
pass tests/userprog/exec-arg
pass tests/userprog/exec-boundary
pass tests/userprog/exec-missing
pass tests/userprog/exec-bad-ptr
pass tests/userprog/exec-read
pass tests/userprog/wait-simple
pass tests/userprog/wait-twice
pass tests/userprog/wait-killed
pass tests/userprog/wait-bad-pid
pass tests/userprog/multi-recurse
pass tests/userprog/multi-child-fd
pass tests/userprog/rox-simple
pass tests/userprog/rox-child
pass tests/userprog/rox-multichild
pass tests/userprog/bad-read
pass tests/userprog/bad-write
pass tests/userprog/bad-read2
pass tests/userprog/bad-write2
pass tests/userprog/bad-jump
pass tests/userprog/bad-jump2
pass tests/vm/pt-grow-stack
pass tests/vm/pt-grow-bad
pass tests/vm/pt-big-stk-obj
pass tests/vm/pt-bad-addr
pass tests/vm/pt-bad-read
pass tests/vm/pt-write-code
pass tests/vm/pt-write-code2
FAIL tests/vm/pt-grow-stk-sc
pass tests/vm/page-linear
pass tests/vm/page-parallel
pass tests/vm/page-merge-seq
FAIL tests/vm/page-merge-par
FAIL tests/vm/page-merge-stk
FAIL tests/vm/page-merge-mm
pass tests/vm/page-shuffle
FAIL tests/vm/mmap-read
FAIL tests/vm/mmap-close
FAIL tests/vm/mmap-unmap
FAIL tests/vm/mmap-overlap
FAIL tests/vm/mmap-twice
FAIL tests/vm/mmap-write
FAIL tests/vm/mmap-ro
FAIL tests/vm/mmap-exit
FAIL tests/vm/mmap-shuffle
pass tests/vm/mmap-bad-fd
FAIL tests/vm/mmap-clean
FAIL tests/vm/mmap-inherit
FAIL tests/vm/mmap-misalign
FAIL tests/vm/mmap-null
FAIL tests/vm/mmap-over-code
FAIL tests/vm/mmap-over-data
FAIL tests/vm/mmap-over-stk
FAIL tests/vm/mmap-remove
pass tests/vm/mmap-zero
pass tests/vm/mmap-bad-fd2
pass tests/vm/mmap-bad-fd3
pass tests/vm/mmap-zero-len
FAIL tests/vm/mmap-off
FAIL tests/vm/mmap-bad-off
FAIL tests/vm/mmap-kernel
FAIL tests/vm/lazy-file
pass tests/vm/lazy-anon
FAIL tests/vm/swap-file
FAIL tests/vm/swap-anon
FAIL tests/vm/swap-iter
pass tests/vm/swap-fork
pass tests/filesys/base/lg-create
pass tests/filesys/base/lg-full
pass tests/filesys/base/lg-random
pass tests/filesys/base/lg-seq-block
pass tests/filesys/base/lg-seq-random
pass tests/filesys/base/sm-create
pass tests/filesys/base/sm-full
pass tests/filesys/base/sm-random
pass tests/filesys/base/sm-seq-block
pass tests/filesys/base/sm-seq-random
pass tests/filesys/base/syn-read
pass tests/filesys/base/syn-remove
pass tests/filesys/base/syn-write
pass tests/threads/alarm-single
pass tests/threads/alarm-multiple
pass tests/threads/alarm-simultaneous
pass tests/threads/alarm-priority
pass tests/threads/alarm-zero
pass tests/threads/alarm-negative
pass tests/threads/priority-change
pass tests/threads/priority-donate-one
pass tests/threads/priority-donate-multiple
pass tests/threads/priority-donate-multiple2
pass tests/threads/priority-donate-nest
pass tests/threads/priority-donate-sema
pass tests/threads/priority-donate-lower
pass tests/threads/priority-fifo
pass tests/threads/priority-preempt
pass tests/threads/priority-sema
pass tests/threads/priority-condvar
pass tests/threads/priority-donate-chain
FAIL tests/vm/cow/cow-simple
29 of 141 tests failed.

tests/vm/pt-grow-stk-sc

깃북에 적힌대로 요구하는 함수를 구현했는데
깃북에서는 분명
Now, all the stack-growth test cases should be passed.
모든 stack-growth 테스트 케이스가 통과해야한다고 적혀있는데
stk, grow가 붙은 테스트 케이스 중에서
FAIL tests/vm/pt-grow-stk-sc가 통과가 안되서
해당 테스트의 로그를 확인해보았다. 

pintos -v -k -T 60 -m 20   --fs-disk=10 -p tests/vm/pt-grow-stk-sc:pt-grow-stk-sc --swap-disk=4 -- -q   -f run pt-grow-stk-sc < /dev/null 2> tests/vm/pt-grow-stk-sc.errors > tests/vm/pt-grow-stk-sc.output
perl -I../.. ../../tests/vm/pt-grow-stk-sc.ck tests/vm/pt-grow-stk-sc tests/vm/pt-grow-stk-sc.result
FAIL tests/vm/pt-grow-stk-sc
Test output failed to match any acceptable form.

Acceptable output:
  (pt-grow-stk-sc) begin
  (pt-grow-stk-sc) create "sample.txt"
  (pt-grow-stk-sc) open "sample.txt"
  (pt-grow-stk-sc) write "sample.txt"
  (pt-grow-stk-sc) 2nd open "sample.txt"
  (pt-grow-stk-sc) read "sample.txt"
  (pt-grow-stk-sc) compare written data against read data
  (pt-grow-stk-sc) end
Differences in `diff -u' format:
  (pt-grow-stk-sc) begin
  (pt-grow-stk-sc) create "sample.txt"
  (pt-grow-stk-sc) open "sample.txt"
  (pt-grow-stk-sc) write "sample.txt"
  (pt-grow-stk-sc) 2nd open "sample.txt"
  (pt-grow-stk-sc) read "sample.txt"
- (pt-grow-stk-sc) compare written data against read data
- (pt-grow-stk-sc) end

(Process exit codes are excluded for matching purposes.)

로그를 분석해보니 

- (pt-grow-stk-sc) compare written data against read data
- (pt-grow-stk-sc) end

../tests/vm/pt-grow-stk-sc.c 코드를 살펴보자. 

/* This test checks that the stack is properly extended even if
   the first access to a stack location occurs inside a system
   call.

   From Godmar Back. */

#include <string.h>
#include <syscall.h>
#include "tests/vm/sample.inc"
#include "tests/lib.h"
#include "tests/main.h"

void
test_main (void)
{
  int handle;
  int slen = strlen (sample);
  char buf2[65536];

  /* Write file via write(). */
  CHECK (create ("sample.txt", slen), "create \"sample.txt\"");
  CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
  CHECK (write (handle, sample, slen) == slen, "write \"sample.txt\"");
  close (handle);

  /* Read back via read(). */
  CHECK ((handle = open ("sample.txt")) > 1, "2nd open \"sample.txt\"");
  CHECK (read (handle, buf2 + 32768, slen) == slen, "read \"sample.txt\"");

  CHECK (!memcmp (sample, buf2 + 32768, slen), "compare written data against read data");
  close (handle);
}

자세히 살펴보니 sample과 buf2를 비교했는데 같으면 0을 반환해서
CHECK (!memcmp (sample, buf2 + 32768, slen), "compare written data against read data");부분이 true가 되야 에러메시지를 출력하지 않아서 테스트를 통과하게 된다.
정리하자면 sample과 buf2가 다르기 때문에 에러메시지가 출력되었다.
여기서 관여하는 함수가 create, open, write, read이어서
syscall.c 파일 속에 4가지 함수를 확인해봐야할 것 같다.

../userprog/syscall.c

확인해보니 여러 프로세스에서 동시에 파일 시스템에 접근할 수 있는데
lock이 걸려있지 않았다. 그래서 파일 관련 연산을 할 때
lock이 걸려있지 않은 시스템 콜에 lock을 추가해주었다.

create()

/* 파일을 생성하는 시스템 콜 */
bool create(const char *file, unsigned initial_size){
	check_address((void*)file); // void*로 묵시적 형변환을 하면 const속성이 사라질 수 있다.

	lock_acquire(&filesys_lock);
	bool success = filesys_create(file, initial_size);
	lock_release(&filesys_lock);

	return success;
}

remove()

/* 파일을 삭제하는 시스템 콜 */
bool remove(const char *file){
    check_address(file);

    lock_acquire(&filesys_lock);
    bool success = filesys_remove(file);
    lock_release(&filesys_lock);

    return success;
}

open()

좀 많이 바꿔줬다.

int open(const char *file){
	check_address(file); // void*로 묵시적 형변환을 하면 const속성이 사라질 수 있다.

	lock_acquire(&filesys_lock);
	struct file *opened_file = filesys_open(file);
	if (opened_file==NULL){ // 파일이 없을 경우
		lock_release(&filesys_lock);
		return -1;
	}
	// 파일이 있을 경우
	int fd = process_add_file(opened_file);
	if(fd == -1){
		file_close(opened_file);
	}
	lock_release(&filesys_lock);
	return fd;
}

read()

lock이 잘 걸려있기도 하고, 위에서 수정했기 때문에 따로 수정해주진 않았다.

write()

lock이 잘 걸려있어서 따로 수정하진 않았다.

테스트 결과

pass tests/userprog/args-none
pass tests/userprog/args-single
pass tests/userprog/args-multiple
pass tests/userprog/args-many
pass tests/userprog/args-dbl-space
pass tests/userprog/halt
pass tests/userprog/exit
pass tests/userprog/create-normal
pass tests/userprog/create-empty
pass tests/userprog/create-null
pass tests/userprog/create-bad-ptr
pass tests/userprog/create-long
pass tests/userprog/create-exists
pass tests/userprog/create-bound
pass tests/userprog/open-normal
pass tests/userprog/open-missing
pass tests/userprog/open-boundary
pass tests/userprog/open-empty
pass tests/userprog/open-null
pass tests/userprog/open-bad-ptr
pass tests/userprog/open-twice
pass tests/userprog/close-normal
pass tests/userprog/close-twice
pass tests/userprog/close-bad-fd
pass tests/userprog/read-normal
pass tests/userprog/read-bad-ptr
pass tests/userprog/read-boundary
pass tests/userprog/read-zero
pass tests/userprog/read-stdout
pass tests/userprog/read-bad-fd
pass tests/userprog/write-normal
pass tests/userprog/write-bad-ptr
pass tests/userprog/write-boundary
pass tests/userprog/write-zero
pass tests/userprog/write-stdin
pass tests/userprog/write-bad-fd
pass tests/userprog/fork-once
pass tests/userprog/fork-multiple
pass tests/userprog/fork-recursive
pass tests/userprog/fork-read
pass tests/userprog/fork-close
pass tests/userprog/fork-boundary
pass tests/userprog/exec-once
pass tests/userprog/exec-arg
pass tests/userprog/exec-boundary
pass tests/userprog/exec-missing
pass tests/userprog/exec-bad-ptr
pass tests/userprog/exec-read
pass tests/userprog/wait-simple
pass tests/userprog/wait-twice
pass tests/userprog/wait-killed
pass tests/userprog/wait-bad-pid
pass tests/userprog/multi-recurse
pass tests/userprog/multi-child-fd
pass tests/userprog/rox-simple
pass tests/userprog/rox-child
pass tests/userprog/rox-multichild
pass tests/userprog/bad-read
pass tests/userprog/bad-write
pass tests/userprog/bad-read2
pass tests/userprog/bad-write2
pass tests/userprog/bad-jump
pass tests/userprog/bad-jump2
pass tests/vm/pt-grow-stack
pass tests/vm/pt-grow-bad
pass tests/vm/pt-big-stk-obj
pass tests/vm/pt-bad-addr
pass tests/vm/pt-bad-read
pass tests/vm/pt-write-code
pass tests/vm/pt-write-code2
FAIL tests/vm/pt-grow-stk-sc
pass tests/vm/page-linear
pass tests/vm/page-parallel
pass tests/vm/page-merge-seq
pass tests/vm/page-merge-par
FAIL tests/vm/page-merge-stk
FAIL tests/vm/page-merge-mm
pass tests/vm/page-shuffle
FAIL tests/vm/mmap-read
FAIL tests/vm/mmap-close
FAIL tests/vm/mmap-unmap
FAIL tests/vm/mmap-overlap
FAIL tests/vm/mmap-twice
FAIL tests/vm/mmap-write
FAIL tests/vm/mmap-ro
FAIL tests/vm/mmap-exit
FAIL tests/vm/mmap-shuffle
pass tests/vm/mmap-bad-fd
FAIL tests/vm/mmap-clean
FAIL tests/vm/mmap-inherit
FAIL tests/vm/mmap-misalign
FAIL tests/vm/mmap-null
FAIL tests/vm/mmap-over-code
FAIL tests/vm/mmap-over-data
FAIL tests/vm/mmap-over-stk
FAIL tests/vm/mmap-remove
pass tests/vm/mmap-zero
pass tests/vm/mmap-bad-fd2
pass tests/vm/mmap-bad-fd3
pass tests/vm/mmap-zero-len
FAIL tests/vm/mmap-off
FAIL tests/vm/mmap-bad-off
FAIL tests/vm/mmap-kernel
FAIL tests/vm/lazy-file
pass tests/vm/lazy-anon
FAIL tests/vm/swap-file
FAIL tests/vm/swap-anon
FAIL tests/vm/swap-iter
pass tests/vm/swap-fork
pass tests/filesys/base/lg-create
pass tests/filesys/base/lg-full
pass tests/filesys/base/lg-random
pass tests/filesys/base/lg-seq-block
pass tests/filesys/base/lg-seq-random
pass tests/filesys/base/sm-create
pass tests/filesys/base/sm-full
pass tests/filesys/base/sm-random
pass tests/filesys/base/sm-seq-block
pass tests/filesys/base/sm-seq-random
pass tests/filesys/base/syn-read
pass tests/filesys/base/syn-remove
pass tests/filesys/base/syn-write
pass tests/threads/alarm-single
pass tests/threads/alarm-multiple
pass tests/threads/alarm-simultaneous
pass tests/threads/alarm-priority
pass tests/threads/alarm-zero
pass tests/threads/alarm-negative
pass tests/threads/priority-change
pass tests/threads/priority-donate-one
pass tests/threads/priority-donate-multiple
pass tests/threads/priority-donate-multiple2
pass tests/threads/priority-donate-nest
pass tests/threads/priority-donate-sema
pass tests/threads/priority-donate-lower
pass tests/threads/priority-fifo
pass tests/threads/priority-preempt
pass tests/threads/priority-sema
pass tests/threads/priority-condvar
pass tests/threads/priority-donate-chain
FAIL tests/vm/cow/cow-simple
28 of 141 tests failed.

시스템콜 create,remove,open에 락을 걸어주었더니
다른 테스트 1개가 더 맞았다!!
근데 tests/vm/pt-grow-stk-sc를 고치려고 했는데
이건 아직 모르겠다 😅

여러번 테스트 돌리다보니 알게되었는데 가끔 테스트 하나가 더 통과한다. 

pass tests/userprog/args-none
pass tests/userprog/args-single
pass tests/userprog/args-multiple
pass tests/userprog/args-many
pass tests/userprog/args-dbl-space
pass tests/userprog/halt
pass tests/userprog/exit
pass tests/userprog/create-normal
pass tests/userprog/create-empty
pass tests/userprog/create-null
pass tests/userprog/create-bad-ptr
pass tests/userprog/create-long
pass tests/userprog/create-exists
pass tests/userprog/create-bound
pass tests/userprog/open-normal
pass tests/userprog/open-missing
pass tests/userprog/open-boundary
pass tests/userprog/open-empty
pass tests/userprog/open-null
pass tests/userprog/open-bad-ptr
pass tests/userprog/open-twice
pass tests/userprog/close-normal
pass tests/userprog/close-twice
pass tests/userprog/close-bad-fd
pass tests/userprog/read-normal
pass tests/userprog/read-bad-ptr
pass tests/userprog/read-boundary
pass tests/userprog/read-zero
pass tests/userprog/read-stdout
pass tests/userprog/read-bad-fd
pass tests/userprog/write-normal
pass tests/userprog/write-bad-ptr
pass tests/userprog/write-boundary
pass tests/userprog/write-zero
pass tests/userprog/write-stdin
pass tests/userprog/write-bad-fd
pass tests/userprog/fork-once
pass tests/userprog/fork-multiple
pass tests/userprog/fork-recursive
pass tests/userprog/fork-read
pass tests/userprog/fork-close
pass tests/userprog/fork-boundary
pass tests/userprog/exec-once
pass tests/userprog/exec-arg
pass tests/userprog/exec-boundary
pass tests/userprog/exec-missing
pass tests/userprog/exec-bad-ptr
pass tests/userprog/exec-read
pass tests/userprog/wait-simple
pass tests/userprog/wait-twice
pass tests/userprog/wait-killed
pass tests/userprog/wait-bad-pid
pass tests/userprog/multi-recurse
pass tests/userprog/multi-child-fd
pass tests/userprog/rox-simple
pass tests/userprog/rox-child
pass tests/userprog/rox-multichild
pass tests/userprog/bad-read
pass tests/userprog/bad-write
pass tests/userprog/bad-read2
pass tests/userprog/bad-write2
pass tests/userprog/bad-jump
pass tests/userprog/bad-jump2
pass tests/vm/pt-grow-stack
pass tests/vm/pt-grow-bad
pass tests/vm/pt-big-stk-obj
pass tests/vm/pt-bad-addr
pass tests/vm/pt-bad-read
pass tests/vm/pt-write-code
pass tests/vm/pt-write-code2
FAIL tests/vm/pt-grow-stk-sc
pass tests/vm/page-linear
pass tests/vm/page-parallel
pass tests/vm/page-merge-seq
pass tests/vm/page-merge-par
pass tests/vm/page-merge-stk
FAIL tests/vm/page-merge-mm
pass tests/vm/page-shuffle
FAIL tests/vm/mmap-read
FAIL tests/vm/mmap-close
FAIL tests/vm/mmap-unmap
FAIL tests/vm/mmap-overlap
FAIL tests/vm/mmap-twice
FAIL tests/vm/mmap-write
FAIL tests/vm/mmap-ro
FAIL tests/vm/mmap-exit
FAIL tests/vm/mmap-shuffle
pass tests/vm/mmap-bad-fd
FAIL tests/vm/mmap-clean
FAIL tests/vm/mmap-inherit
FAIL tests/vm/mmap-misalign
FAIL tests/vm/mmap-null
FAIL tests/vm/mmap-over-code
FAIL tests/vm/mmap-over-data
FAIL tests/vm/mmap-over-stk
FAIL tests/vm/mmap-remove
pass tests/vm/mmap-zero
pass tests/vm/mmap-bad-fd2
pass tests/vm/mmap-bad-fd3
pass tests/vm/mmap-zero-len
FAIL tests/vm/mmap-off
FAIL tests/vm/mmap-bad-off
FAIL tests/vm/mmap-kernel
FAIL tests/vm/lazy-file
pass tests/vm/lazy-anon
FAIL tests/vm/swap-file
FAIL tests/vm/swap-anon
FAIL tests/vm/swap-iter
pass tests/vm/swap-fork
pass tests/filesys/base/lg-create
pass tests/filesys/base/lg-full
pass tests/filesys/base/lg-random
pass tests/filesys/base/lg-seq-block
pass tests/filesys/base/lg-seq-random
pass tests/filesys/base/sm-create
pass tests/filesys/base/sm-full
pass tests/filesys/base/sm-random
pass tests/filesys/base/sm-seq-block
pass tests/filesys/base/sm-seq-random
pass tests/filesys/base/syn-read
pass tests/filesys/base/syn-remove
pass tests/filesys/base/syn-write
pass tests/threads/alarm-single
pass tests/threads/alarm-multiple
pass tests/threads/alarm-simultaneous
pass tests/threads/alarm-priority
pass tests/threads/alarm-zero
pass tests/threads/alarm-negative
pass tests/threads/priority-change
pass tests/threads/priority-donate-one
pass tests/threads/priority-donate-multiple
pass tests/threads/priority-donate-multiple2
pass tests/threads/priority-donate-nest
pass tests/threads/priority-donate-sema
pass tests/threads/priority-donate-lower
pass tests/threads/priority-fifo
pass tests/threads/priority-preempt
pass tests/threads/priority-sema
pass tests/threads/priority-condvar
pass tests/threads/priority-donate-chain
FAIL tests/vm/cow/cow-simple
27 of 141 tests failed.
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오늘의어록
2024년 6월 11일

너무 멋있어요. 댓글 달고 갑니다~번창하세요^^

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