标头擦除功能完成后，编辑自己标头的程序将发送SEGFAULT

如何解决标头擦除功能完成后，编辑自己标头的程序将发送SEGFAULT

在SearchAndDestroy（）之后调用的第一个外部函数中，我一直从GDB收到错误消息，提示“找不到../elf/dl-runtime.c:73文件”。 这是功能

#include <stdio.h> 
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>

#define ELFHeaderLength 0x40
#define ProgramHeaderLength 0x38
#define SectionHeaderLength 0x40
#define AddressLength 12
#define SecondAddressOffset (AddressLength + 1)

#define FileLineBuff 150
typedef int WORD;

int SearchAndDestroy(void)
{
    FILE *filePointer;
    char line[FileLineBuff];
    char lastLine[FileLineBuff];
    char addressStr[AddressLength + 1];
    long int addressInt;
    WORD *start;
    WORD *end;

    // open /proc/self/maps file
    filePointer = fopen("/proc/self/maps","r");
    if (filePointer == NULL)
    {
        return 2;
    }

    // read the first address from first line from /proc/self/maps into address array  
    fgets(line,FileLineBuff * sizeof(char),filePointer);
    memcpy(addressStr,line,AddressLength);
    addressStr[AddressLength] = 0x00;

    // make hex then make pointer
    addressInt = strtol(addressStr,NULL,16);
    start = (WORD *) addressInt;

    // trace through until the last line is found
    for (; (strstr(line,"MangleS.elf")) != NULL; fgets(line,filePointer))
    {
        memcpy(lastLine,FileLineBuff);
    }
    memcpy(addressStr,&lastLine[SecondAddressOffset],16);
    end = (WORD *) addressInt;

    // close file stream
    fclose(filePointer);

    // allow write to header spaces with mprotect
    mprotect(start,ELFHeaderLength + ProgramHeaderLength,PROT_WRITE);

    // clear ELF & Program Headers
    for (int i = 0; i < (ELFHeaderLength + ProgramHeaderLength); i++)
    {
        *(start + i) = 0;
    }

    // disallow write & allow SectionHeader write
    mprotect(start,PROT_READ);
    mprotect(end - SectionHeaderLength,SectionHeaderLength,PROT_WRITE);

    // clear Section Header
    for (int i = 0; i < SectionHeaderLength; i++)
    {
        *(end - SectionHeaderLength + i) = 0;
    }
    mprotect(end - SectionHeaderLength,PROT_READ);
    return 0;
}

Valgrind在结尾附近产生了错误，无效写入大小4。但是，打印语句显示在正常执行期间不会发生这种情况。目前，GDB突出显示了另一个函数中的if语句是导致崩溃的原因，但应在if语句之前的print语句未在正常执行中出现。