之前做项目的时候，也会遇到过根据页表，由虚拟地址翻译物理地址的需求，一般的做法是HACK内核，在内核中加入HACK代码，思路无非就是通过页表进行转换，但是现在有了一种新的方式，这种方式下，不需要HACK内核，也不需要重新编译内核，便能够根据进程的虚拟地址，得到它的物理地址，下面展开介绍。原理非常简单，依赖于 proc 文件系统的几个节点：/proc/$pid/pagemap /proc/kpagecount /proc/kpageflags准确的说，只依赖第一个就够了，这个节点的逻辑是现在内核源码文件./fs/proc/task_mmu.c中，pagemap每8个字节为一组，描述了一个struct page 对应的结构信息，这里面就包含了它的PNF物理页框号。测试代码：#include stdio.h #include stdlib.h #include unistd.h #include assert.h #include errno.h #include stdint.h #include string.h #define PAGEMAP_ENTRY 8 #define GET_BIT(X,Y) (X ((uint64_t)1Y)) Y #define GET_PFN(X) X 0x7FFFFFFFFFFFFF const int __endian_bit = 1; #define is_bigendian() ( (*(char*)__endian_bit) == 0 ) int i, c, pid, status; unsigned long virt_addr; uint64_t read_val, file_offset, page_size; char path_buf [0x100] = {}; FILE * f; char *end; int read_pagemap(char * path_buf, unsigned long virt_addr); int main(int argc, char ** argv){ if(argc!=3){ printf("Argument number is not correct!\n pagemap PID VIRTUAL_ADDRESS\n"); return -1; } if(!memcmp(argv[1],"self",sizeof("self"))){ sprintf(path_buf, "/proc/self/pagemap"); pid = -1; } else{ pid = strtol(argv[1],end, 10); if (end == argv[1] || *end != '\0' || pid=0){ printf("PID must be a positive number or 'self'\n"); return -1; } } virt_addr = strtoll(argv[2], NULL, 16); if(pid!=-1) sprintf(path_buf, "/proc/%u/pagemap", pid); page_size = getpagesize(); read_pagemap(path_buf, virt_addr); return 0; } int read_pagemap(char * path_buf, unsigned long virt_addr){ printf("Big endian? %d\n", is_bigendian()); f = fopen(path_buf, "rb"); if(!f){ printf("Error! Cannot open %s\n", path_buf); return -1; } //Shifting by virt-addr-offset number of bytes //and multiplying by the size of an address (the size of an entry in pagemap file) file_offset = virt_addr / page_size * PAGEMAP_ENTRY; printf("Vaddr: 0x%lx, Page_size: %ld, Entry_size: %d\n", virt_addr, page_size, PAGEMAP_ENTRY); printf("Reading %s at 0x%llx\n", path_buf, (unsigned long long) file_offset); status = fseek(f, file_offset, SEEK_SET); if(status){ perror("Failed to do fseek!"); return -1; } errno = 0; read_val = 0; unsigned char c_buf[PAGEMAP_ENTRY]; for(i=0; i PAGEMAP_ENTRY; i++){ c = getc(f); if(c==EOF){ printf("\nReached end of the file\n"); return 0; } if(is_bigendian()) c_buf[i] = c; else c_buf[PAGEMAP_ENTRY - i - 1] = c; printf("[%d]0x%x ", i, c); } for(i=0; i PAGEMAP_ENTRY; i++){ //printf("%d ",c_buf[i]); read_val = (read_val 8) + c_buf[i]; } printf("\n"); printf("Result: 0x%llx\n", (unsigned long long) read_val); if(GET_BIT(read_val, 63)) { uint64_t pfn = GET_PFN(read_val); printf("PFN: 0x%lx (0x%lx)\n", pfn, pfn * page_size + virt_addr % page_size); } else printf("Page not present\n"); if(GET_BIT(read_val, 62)) printf("Page swapped\n"); fclose(f); return 0; }编译：czl@czl-RedmiBook-14:~/Workspace/memory$ gcc page.c -o virt2phy czl@czl-RedmiBook-14:~/Workspace/memory$验证，思路是找两个用户态进程，根据它们的地址空间，找到libc.so的运行地址，然后用上面的工具得到libc.so的物理地址，之所以选择libc.so是因为libc.so是所有的进程共享，它们应该具有相同的物理地址，即便虚拟地址不同。选择进程1：czl@czl-RedmiBook-14:~/Workspace/memory$ sudo cat /proc/1/maps [sudo] password for czl: 559ed662f000-559ed677f000 r-xp 00000000 08:08 1181921 /lib/systemd/systemd 559ed697e000-559ed69b9000 r--p 0014f000 08:08 1181921 /lib/systemd/systemd 559ed69b9000-559ed69ba000 rw-p 0018a000 08:08 1181921 /lib/systemd/systemd 559ed74fe000-559ed76e0000 rw-p 00000000 00:00 0 [heap] 7f18fc000000-7f18fc021000 rw-p 00000000 00:00 0 7f18fc021000-7f1900000000 ---p 00000000 00:00 0 7f1904000000-7f1904021000 rw-p 00000000 00:00 0 7f1904021000-7f1908000000 ---p 00000000 00:00 0 7f19082dd000-7f19082de000 ---p 00000000 00:00 0 7f19082de000-7f1908ade000 rw-p 00000000 00:00 0 7f1908ade000-7f1908adf000 ---p 00000000 00:00 0 7f1908adf000-7f19092df000 rw-p 00000000 00:00 0 7f19092df000-7f190947c000 r-xp 00000000 08:08 1184965 /lib/x86_64-linux-gnu/libm-2.27.so 7f190947c000-7f190967b000 ---p 0019d000 08:08 1184965 /lib/x86_64-linux-gnu/libm-2.27.so 7f190967b000-7f190967c000 r--p 0019c000 08:08 1184965 /lib/x86_64-linux-gnu/libm-2.27.so 7f190967c000-7f190967d000 rw-p 0019d000 08:08 1184965 /lib/x86_64-linux-gnu/libm-2.27.so 7f190967d000-7f190969a000 r-xp 00000000 08:08 1180247 /lib/x86_64-linux-gnu/libudev.so.1.6.9 7f190969a000-7f1909899000 ---p 0001d000 08:08 1180247 /lib/x86_64-linux-gnu/libudev.so.1.6.9 7f1909899000-7f190989a000 r--p 0001c000 08:08 1180247 /lib/x86_64-linux-gnu/libudev.so.1.6.9 7f190989a000-7f190989b000 rw-p 0001d000 08:08 1180247 /lib/x86_64-linux-gnu/libudev.so.1.6.9 7f190989b000-7f19098af000 r-xp 00000000 08:08 1185131 /lib/x86_64-linux-gnu/libgpg-error.so.0.22.0 7f19098af000-7f1909aae000 ---p 00014000 08:08 1185131 /lib/x86_64-linux-gnu/libgpg-error.so.0.22.0 7f1909aae000-7f1909aaf000 r--p 00013000 08:08 1185131 /lib/x86_64-linux-gnu/libgpg-error.so.0.22.0 7f1909aaf000-7f1909ab0000 rw-p 00014000 08:08 1185131 /lib/x86_64-linux-gnu/libgpg-error.so.0.22.0 7f1909ab0000-7f1909aba000 r-xp 00000000 08:08 1180918 /lib/x86_64-linux-gnu/libjson-c.so.3.0.1 7f1909aba000-7f1909cb9000 ---p 0000a000 08:08 1180918 /lib/x86_64-linux-gnu/libjson-c.so.3.0.1 7f1909cb9000-7f1909cba000 r--p 00009000 08:08 1180918 /lib/x86_64-linux-gnu/libjson-c.so.3.0.1 7f1909cba000-7f1909cbb000 rw-p 0000a000 08:08 1180918 /lib/x86_64-linux-gnu/libjson-c.so.3.0.1 7f1909cbb000-7f1909cc3000 r-xp 00000000 08:08 794506 /usr/lib/x86_64-linux-gnu/libargon2.so.0 7f1909cc3000-7f1909ec2000 ---p 00008000 08:08 794506 /usr/lib/x86_64-linux-gnu/libargon2.so.0 7f1909ec2000-7f1909ec3000 r--p 00007000 08:08 794506 /usr/lib/x86_64-linux-gnu/libargon2.so.0 7f1909ec3000-7f1909ec4000 rw-p 00008000 08:08 794506 /usr/lib/x86_64-linux-gnu/libargon2.so.0 7f1909ec4000-7f1909f2a000 r-xp 00000000 08:08 1185112 /lib/x86_64-linux-gnu/libdevmapper.so.1.02.1 7f1909f2a000-7f190a129000 ---p 00066000 08:08 1185112 /lib/x86_64-linux-gnu/libdevmapper.so.1.02.1 7f190a129000-7f190a12a000 r--p 00065000 08:08 1185112 /lib/x86_64-linux-gnu/libdevmapper.so.1.02.1 7f190a12a000-7f190a12e000 rw-p 00066000 08:08 1185112 /lib/x86_64-linux-gnu/libdevmapper.so.1.02.1 7f190a12e000-7f190a12f000 rw-p 00000000 00:00 0 7f190a12f000-7f190a133000 r-xp 00000000 08:08 1185078 /lib/x86_64-linux-gnu/libattr.so.1.1.0 7f190a133000-7f190a332000 ---p 00004000 08:08 1185078 /lib/x86_64-linux-gnu/libattr.so.1.1.0 7f190a332000-7f190a333000 r--p 00003000 08:08 1185078 /lib/x86_64-linux-gnu/libattr.so.1.1.0 7f190a333000-7f190a334000 rw-p 00004000 08:08 1185078 /lib/x86_64-linux-gnu/libattr.so.1.1.0 7f190a334000-7f190a338000 r-xp 00000000 08:08 1185093 /lib/x86_64-linux-gnu/libcap-ng.so.0.0.0 7f190a338000-7f190a537000 ---p 00004000 08:08 1185093 /lib/x86_64-linux-gnu/libcap-ng.so.0.0.0 7f190a537000-7f190a538000 r--p 00003000 08:08 1185093 /lib/x86_64-linux-gnu/libcap-ng.so.0.0.0 7f190a538000-7f190a539000 rw-p 00004000 08:08 1185093 /lib/x86_64-linux-gnu/libcap-ng.so.0.0.0 7f190a539000-7f190a53f000 r-xp 00000000 08:08 1180927 /lib/x86_64-linux-gnu/libuuid.so.1.3.0 7f190a53f000-7f190a73e000 ---p 00006000 08:08 1180927 /lib/x86_64-linux-gnu/libuuid.so.1.3.0 7f190a73e000-7f190a73f000 r--p 00005000 08:08 1180927 /lib/x86_64-linux-gnu/libuuid.so.1.3.0 7f190a73f000-7f190a740000 rw-p 00006000 08:08 1180927 /lib/x86_64-linux-gnu/libuuid.so.1.3.0 7f190a740000-7f190a743000 r-xp 00000000 08:08 1181890 /lib/x86_64-linux-gnu/libdl-2.27.so 7f190a743000-7f190a942000 ---p 00003000 08:08 1181890 /lib/x86_64-linux-gnu/libdl-2.27.so 7f190a942000-7f190a943000 r--p 00002000 08:08 1181890 /lib/x86_64-linux-gnu/libdl-2.27.so 7f190a943000-7f190a944000 rw-p 00003000 08:08 1181890 /lib/x86_64-linux-gnu/libdl-2.27.so 7f190a944000-7f190a9b4000 r-xp 00000000 08:08 1185212 /lib/x86_64-linux-gnu/libpcre.so.3.13.3 7f190a9b4000-7f190abb4000 ---p 00070000 08:08 1185212 /lib/x86_64-linux-gnu/libpcre.so.3.13.3 7f190abb4000-7f190abb5000 r--p 00070000 08:08 1185212 /lib/x86_64-linux-gnu/libpcre.so.3.13.3 7f190abb5000-7f190abb6000 rw-p 00071000 08:08 1185212 /lib/x86_64-linux-gnu/libpcre.so.3.13.3 7f190abb6000-7f190abd0000 r-xp 00000000 08:08 1185050 /lib/x86_64-linux-gnu/libpthread-2.27.so 7f190abd0000-7f190adcf000 ---p 0001a000 08:08 1185050 /lib/x86_64-linux-gnu/libpthread-2.27.so 7f190adcf000-7f190add0000 r--p 00019000 08:08 1185050 /lib/x86_64-linux-gnu/libpthread-2.27.so 7f190add0000-7f190add1000 rw-p 0001a000 08:08 1185050 /lib/x86_64-linux-gnu/libpthread-2.27.so 7f190add1000-7f190add5000 rw-p 00000000 00:00 0 7f190add5000-7f190adf0000 r-xp 00000000 08:08 794419 /usr/lib/x86_64-linux-gnu/liblz4.so.1.7.1 7f190adf0000-7f190afef000 ---p 0001b000 08:08 794419 /usr/lib/x86_64-linux-gnu/liblz4.so.1.7.1 7f190afef000-7f190aff0000 r--p 0001a000 08:08 794419 /usr/lib/x86_64-linux-gnu/liblz4.so.1.7.1 7f190aff0000-7f190aff1000 rw-p 0001b000 08:08 794419 /usr/lib/x86_64-linux-gnu/liblz4.so.1.7.1 7f190aff1000-7f190b015000 r-xp 00000000 08:08 1185150 /lib/x86_64-linux-gnu/liblzma.so.5.2.2 7f190b015000-7f190b215000 ---p 00024000 08:08 1185150 /lib/x86_64-linux-gnu/liblzma.so.5.2.2 7f190b215000-7f190b216000 r--p 00024000 08:08 1185150 /lib/x86_64-linux-gnu/liblzma.so.5.2.2 7f190b216000-7f190b217000 rw-p 00025000 08:08 1185150 /lib/x86_64-linux-gnu/liblzma.so.5.2.2 7f190b217000-7f190b249000 r-xp 00000000 08:08 1185137 /lib/x86_64-linux-gnu/libidn.so.11.6.16 7f190b249000-7f190b448000 ---p 00032000 08:08 1185137 /lib/x86_64-linux-gnu/libidn.so.11.6.16 7f190b448000-7f190b449000 r--p 00031000 08:08 1185137 /lib/x86_64-linux-gnu/libidn.so.11.6.16 7f190b449000-7f190b44a000 rw-p 00032000 08:08 1185137 /lib/x86_64-linux-gnu/libidn.so.11.6.16 7f190b44a000-7f190b450000 r-xp 00000000 08:08 795074 /usr/lib/x86_64-linux-gnu/libip4tc.so.0.1.0 7f190b450000-7f190b64f000 ---p 00006000 08:08 795074 /usr/lib/x86_64-linux-gnu/libip4tc.so.0.1.0 7f190b64f000-7f190b650000 r--p 00005000 08:08 795074 /usr/lib/x86_64-linux-gnu/libip4tc.so.0.1.0 7f190b650000-7f190b651000 rw-p 00006000 08:08 795074 /usr/lib/x86_64-linux-gnu/libip4tc.so.0.1.0 7f190b651000-7f190b765000 r-xp 00000000 08:08 1185129 /lib/x86_64-linux-gnu/libgcrypt.so.20.2.1 7f190b765000-7f190b965000 ---p 00114000 08:08 1185129 /lib/x86_64-linux-gnu/libgcrypt.so.20.2.1 7f190b965000-7f190b967000 r--p 00114000 08:08 1185129 /lib/x86_64-linux-gnu/libgcrypt.so.20.2.1 7f190b967000-7f190b96c000 rw-p 00116000 08:08 1185129 /lib/x86_64-linux-gnu/libgcrypt.so.20.2.1 7f190b96c000-7f190b96d000 rw-p 00000000 00:00 0 7f190b96d000-7f190b971000 r-xp 00000000 08:08 1185095 /lib/x86_64-linux-gnu/libcap.so.2.25 7f190b971000-7f190bb71000 ---p 00004000 08:08 1185095 /lib/x86_64-linux-gnu/libcap.so.2.25 7f190bb71000-7f190bb72000 r--p 00004000 08:08 1185095 /lib/x86_64-linux-gnu/libcap.so.2.25 7f190bb72000-7f190bb73000 rw-p 00005000 08:08 1185095 /lib/x86_64-linux-gnu/libcap.so.2.25 7f190bb73000-7f190bbbc000 r-xp 00000000 08:08 1185103 /lib/x86_64-linux-gnu/libcryptsetup.so.12.2.0 7f190bbbc000-7f190bdbc000 ---p 00049000 08:08 1185103 /lib/x86_64-linux-gnu/libcryptsetup.so.12.2.0 7f190bdbc000-7f190bdbd000 r--p 00049000 08:08 1185103 /lib/x86_64-linux-gnu/libcryptsetup.so.12.2.0 7f190bdbd000-7f190bdbf000 rw-p 0004a000 08:08 1185103 /lib/x86_64-linux-gnu/libcryptsetup.so.12.2.0 7f190bdbf000-7f190bdc6000 r-xp 00000000 08:08 1185068 /lib/x86_64-linux-gnu/libacl.so.1.1.0 7f190bdc6000-7f190bfc5000 ---p 00007000 08:08 1185068 /lib/x86_64-linux-gnu/libacl.so.1.1.0 7f190bfc5000-7f190bfc6000 r--p 00006000 08:08 1185068 /lib/x86_64-linux-gnu/libacl.so.1.1.0 7f190bfc6000-7f190bfc7000 rw-p 00007000 08:08 1185068 /lib/x86_64-linux-gnu/libacl.so.1.1.0 7f190bfc7000-7f190bfd6000 r-xp 00000000 08:08 1185072 /lib/x86_64-linux-gnu/libapparmor.so.1.4.2 7f190bfd6000-7f190c1d5000 ---p 0000f000 08:08 1185072 /lib/x86_64-linux-gnu/libapparmor.so.1.4.2 7f190c1d5000-7f190c1d6000 r--p 0000e000 08:08 1185072 /lib/x86_64-linux-gnu/libapparmor.so.1.4.2 7f190c1d6000-7f190c1d7000 rw-p 0000f000 08:08 1185072 /lib/x86_64-linux-gnu/libapparmor.so.1.4.2 7f190c1d7000-7f190c1ed000 r-xp 00000000 08:08 1185146 /lib/x86_64-linux-gnu/libkmod.so.2.3.2 7f190c1ed000-7f190c3ec000 ---p 00016000 08:08 1185146 /lib/x86_64-linux-gnu/libkmod.so.2.3.2 7f190c3ec000-7f190c3ed000 r--p 00015000 08:08 1185146 /lib/x86_64-linux-gnu/libkmod.so.2.3.2 7f190c3ed000-7f190c3ee000 rw-p 00016000 08:08 1185146 /lib/x86_64-linux-gnu/libkmod.so.2.3.2 7f190c3ee000-7f190c40b000 r-xp 00000000 08:08 1185080 /lib/x86_64-linux-gnu/libaudit.so.1.0.0 7f190c40b000-7f190c60b000 ---p 0001d000 08:08 1185080 /lib/x86_64-linux-gnu/libaudit.so.1.0.0 7f190c60b000-7f190c60c000 r--p 0001d000 08:08 1185080 /lib/x86_64-linux-gnu/libaudit.so.1.0.0 7f190c60c000-7f190c60d000 rw-p 0001e000 08:08 1185080 /lib/x86_64-linux-gnu/libaudit.so.1.0.0 7f190c60d000-7f190c617000 rw-p 00000000 00:00 0 7f190c617000-7f190c624000 r-xp 00000000 08:08 1185199 /lib/x86_64-linux-gnu/libpam.so.0.83.1 7f190c624000-7f190c823000 ---p 0000d000 08:08 1185199 /lib/x86_64-linux-gnu/libpam.so.0.83.1 7f190c823000-7f190c824000 r--p 0000c000 08:08 1185199 /lib/x86_64-linux-gnu/libpam.so.0.83.1 7f190c824000-7f190c825000 rw-p 0000d000 08:08 1185199 /lib/x86_64-linux-gnu/libpam.so.0.83.1 7f190c825000-7f190c86c000 r-xp 00000000 08:08 1180910 /lib/x86_64-linux-gnu/libblkid.so.1.1.0 7f190c86c000-7f190ca6c000 ---p 00047000 08:08 1180910 /lib/x86_64-linux-gnu/libblkid.so.1.1.0 7f190ca6c000-7f190ca70000 r--p 00047000 08:08 1180910 /lib/x86_64-linux-gnu/libblkid.so.1.1.0 7f190ca70000-7f190ca71000 rw-p 0004b000 08:08 1180910 /lib/x86_64-linux-gnu/libblkid.so.1.1.0 7f190ca71000-7f190ca72000 rw-p 00000000 00:00 0 7f190ca72000-7f190cac3000 r-xp 00000000 08:08 1180920 /lib/x86_64-linux-gnu/libmount.so.1.1.0 7f190cac3000-7f190ccc2000 ---p 00051000 08:08 1180920 /lib/x86_64-linux-gnu/libmount.so.1.1.0 7f190ccc2000-7f190ccc4000 r--p 00050000 08:08 1180920 /lib/x86_64-linux-gnu/libmount.so.1.1.0 7f190ccc4000-7f190ccc5000 rw-p 00052000 08:08 1180920 /lib/x86_64-linux-gnu/libmount.so.1.1.0 7f190ccc5000-7f190ccc6000 rw-p 00000000 00:00 0 7f190ccc6000-7f190cceb000 r-xp 00000000 08:08 1185235 /lib/x86_64-linux-gnu/libselinux.so.1 7f190cceb000-7f190ceea000 ---p 00025000 08:08 1185235 /lib/x86_64-linux-gnu/libselinux.so.1 7f190ceea000-7f190ceeb000 r--p 00024000 08:08 1185235 /lib/x86_64-linux-gnu/libselinux.so.1 7f190ceeb000-7f190ceec000 rw-p 00025000 08:08 1185235 /lib/x86_64-linux-gnu/libselinux.so.1 7f190ceec000-7f190ceee000 rw-p 00000000 00:00 0 7f190ceee000-7f190cf21000 r-xp 00000000 08:08 1180923 /lib/x86_64-linux-gnu/libseccomp.so.2.4.3 7f190cf21000-7f190d120000 ---p 00033000 08:08 1180923 /lib/x86_64-linux-gnu/libseccomp.so.2.4.3 7f190d120000-7f190d139000 r--p 00032000 08:08 1180923 /lib/x86_64-linux-gnu/libseccomp.so.2.4.3 7f190d139000-7f190d13a000 rw-p 0004b000 08:08 1180923 /lib/x86_64-linux-gnu/libseccomp.so.2.4.3 7f190d13a000-7f190d141000 r-xp 00000000 08:08 1185059 /lib/x86_64-linux-gnu/librt-2.27.so 7f190d141000-7f190d340000 ---p 00007000 08:08 1185059 /lib/x86_64-linux-gnu/librt-2.27.so 7f190d340000-7f190d341000 r--p 00006000 08:08 1185059 /lib/x86_64-linux-gnu/librt-2.27.so 7f190d341000-7f190d342000 rw-p 00007000 08:08 1185059 /lib/x86_64-linux-gnu/librt-2.27.so 7f190d342000-7f190d4fa000 r-xp 00000000 08:08 1180295 /lib/systemd/libsystemd-shared-237.so 7f190d4fa000-7f190d6f9000 ---p 001b8000 08:08 1180295 /lib/systemd/libsystemd-shared-237.so 7f190d6f9000-7f190d783000 r--p 001b7000 08:08 1180295 /lib/systemd/libsystemd-shared-237.so 7f190d783000-7f190d784000 rw-p 00241000 08:08 1180295 /lib/systemd/libsystemd-shared-237.so 7f190d784000-7f190d786000 rw-p 00000000 00:00 0 7f190d786000-7f190d96d000 r-xp 00000000 08:08 1179742 /lib/x86_64-linux-gnu/libc-2.27.so 7f190d96d000-7f190db6d000 ---p 001e7000 08:08 1179742 /lib/x86_64-linux-gnu/libc-2.27.so 7f190db6d000-7f190db71000 r--p 001e7000 08:08 1179742 /lib/x86_64-linux-gnu/libc-2.27.so 7f190db71000-7f190db73000 rw-p 001eb000 08:08 1179742 /lib/x86_64-linux-gnu/libc-2.27.so 7f190db73000-7f190db77000 rw-p 00000000 00:00 0 7f190db77000-7f190dba0000 r-xp 00000000 08:08 1179738 /lib/x86_64-linux-gnu/ld-2.27.so 7f190dd78000-7f190dd88000 rw-p 00000000 00:00 0 7f190dda0000-7f190dda1000 r--p 00029000 08:08 1179738 /lib/x86_64-linux-gnu/ld-2.27.so 7f190dda1000-7f190dda2000 rw-p 0002a000 08:08 1179738 /lib/x86_64-linux-gnu/ld-2.27.so 7f190dda2000-7f190dda3000 rw-p 00000000 00:00 0 7ffc80c4a000-7ffc80c6b000 rw-p 00000000 00:00 0 [stack] 7ffc80c87000-7ffc80c8a000 r--p 00000000 00:00 0 [vvar] 7ffc80c8a000-7ffc80c8b000 r-xp 00000000 00:00 0 [vdso] ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall] czl@czl-RedmiBook-14:~/Workspace/memory$选择进程1806：czl@czl-RedmiBook-14:~/Workspace/linux-compile/linux-5.4.128$ sudo cat /proc/1806/maps [sudo] password for czl: 557b0444b000-557b04453000 r-xp 00000000 08:08 789204 /usr/lib/gnome-shell/gnome-shell-calendar-server 557b04652000-557b04653000 r--p 00007000 08:08 789204 /usr/lib/gnome-shell/gnome-shell-calendar-server 557b04653000-557b04654000 rw-p 00008000 08:08 789204 /usr/lib/gnome-shell/gnome-shell-calendar-server 557b063b8000-557b064ab000 rw-p 00000000 00:00 0 [heap] 7f2044000000-7f2044021000 rw-p 00000000 00:00 0 7f2044021000-7f2048000000 ---p 00000000 00:00 0 7f204c000000-7f204c082000 rw-p 00000000 00:00 0 7f204c082000-7f2050000000 ---p 00000000 00:00 0 7f2050000000-7f2050021000 rw-p 00000000 00:00 0 7f2050021000-7f2054000000 ---p 00000000 00:00 0 7f2055f26000-7f2055f27000 ---p 00000000 00:00 0 7f2055f27000-7f2056727000 rw-p 00000000 00:00 0 7f2056727000-7f2056732000 r-xp 00000000 08:08 1185027 /lib/x86_64-linux-gnu/libnss_files-2.27.so 7f2056732000-7f2056931000 ---p 0000b000 08:08 1185027 /lib/x86_64-linux-gnu/libnss_files-2.27.so 7f2056931000-7f2056932000 r--p 0000a000 08:08 1185027 /lib/x86_64-linux-gnu/libnss_files-2.27.so 7f2056932000-7f2056933000 rw-p 0000b000 08:08 1185027 /lib/x86_64-linux-gnu/libnss_files-2.27.so 7f2056933000-7f2056939000 rw-p 00000000 00:00 0 7f2056939000-7f2056950000 r-xp 00000000 08:08 1184968 /lib/x86_64-linux-gnu/libnsl-2.27.so 7f2056950000-7f2056b4f000 ---p 00017000 08:08 1184968 /lib/x86_64-linux-gnu/libnsl-2.27.so 7f2056b4f000-7f2056b50000 r--p 00016000 08:08 1184968 /lib/x86_64-linux-gnu/libnsl-2.27.so 7f2056b50000-7f2056b51000 rw-p 00017000 08:08 1184968 /lib/x86_64-linux-gnu/libnsl-2.27.so 7f2056b51000-7f2056b53000 rw-p 00000000 00:00 0 7f2056b53000-7f2056b5e000 r-xp 00000000 08:08 1185029 /lib/x86_64-linux-gnu/libnss_nis-2.27.so 7f2056b5e000-7f2056d5d000 ---p 0000b000 08:08 1185029 /lib/x86_64-linux-gnu/libnss_nis-2.27.so 7f2056d5d000-7f2056d5e000 r--p 0000a000 08:08 1185029 /lib/x86_64-linux-gnu/libnss_nis-2.27.so 7f2056d5e000-7f2056d5f000 rw-p 0000b000 08:08 1185029 /lib/x86_64-linux-gnu/libnss_nis-2.27.so 7f2056d5f000-7f2056d67000 r-xp 00000000 08:08 1185018 /lib/x86_64-linux-gnu/libnss_compat-2.27.so 7f2056d67000-7f2056f67000 ---p 00008000 08:08 1185018 /lib/x86_64-linux-gnu/libnss_compat-2.27.so 7f2056f67000-7f2056f68000 r--p 00008000 08:08 1185018 /lib/x86_64-linux-gnu/libnss_compat-2.27.so 7f2056f68000-7f2056f69000 rw-p 00009000 08:08 1185018 /lib/x86_64-linux-gnu/libnss_compat-2.27.so 7f2056f69000-7f2056f7a000 r-xp 00000000 08:08 806472 /usr/lib/evolution-data-server/camel-providers/libcamelpop3.so 7f2056f7a000-7f2057179000 ---p 00011000 08:08 806472 /usr/lib/evolution-data-server/camel-providers/libcamelpop3.so 7f2057179000-7f205717a000 r--p 00010000 08:08 806472 /usr/lib/evolution-data-server/camel-providers/libcamelpop3.so 7f205717a000-7f205717b000 rw-p 00011000 08:08 806472 /usr/lib/evolution-data-server/camel-providers/libcamelpop3.so 7f205717b000-7f2057191000 r-xp 00000000 08:08 806470 /usr/lib/evolution-data-server/camel-providers/libcamelnntp.so 7f2057191000-7f2057391000 ---p 00016000 08:08 806470 /usr/lib/evolution-data-server/camel-providers/libcamelnntp.so 7f2057391000-7f2057392000 r--p 00016000 08:08 806470 /usr/lib/evolution-data-server/camel-providers/libcamelnntp.so 7f2057392000-7f2057393000 rw-p 00017000 08:08 806470 /usr/lib/evolution-data-server/camel-providers/libcamelnntp.so 7f2057393000-7f2057399000 r-xp 00000000 08:08 806474 /usr/lib/evolution-data-server/camel-providers/libcamelsendmail.so 7f2057399000-7f2057598000 ---p 00006000 08:08 806474 /usr/lib/evolution-data-server/camel-providers/libcamelsendmail.so 7f2057598000-7f2057599000 r--p 00005000 08:08 806474 /usr/lib/evolution-data-server/camel-providers/libcamelsendmail.so 7f2057599000-7f205759a000 rw-p 00006000 08:08 806474 /usr/lib/evolution-data-server/camel-providers/libcamelsendmail.so 7f205759a000-7f20575fc000 r-xp 00000000 08:08 806466 /usr/lib/evolution-data-server/camel-providers/libcamelimapx.so 7f20575fc000-7f20577fb000 ---p 00062000 08:08 806466 /usr/lib/evolution-data-server/camel-providers/libcamelimapx.so 7f20577fb000-7f20577fe000 r--p 00061000 08:08 806466 /usr/lib/evolution-data-server/camel-providers/libcamelimapx.so 7f20577fe000-7f20577ff000 rw-p 00064000 08:08 806466 /usr/lib/evolution-data-server/camel-providers/libcamelimapx.so 7f20577ff000-7f2057800000 ---p 00000000 00:00 0 7f2057800000-7f2058000000 rw-p 00000000 00:00 0 7f2058000000-7f2058021000 rw-p 00000000 00:00 0 7f2058021000-7f205c000000 ---p 00000000 00:00 0 7f205c000000-7f205c031000 rw-p 00000000 00:00 0 7f205c031000-7f2060000000 ---p 00000000 00:00 0 7f2060000000-7f2060021000 rw-p 00000000 00:00 0 7f2060021000-7f2064000000 ---p 00000000 00:00 0 7f2064035000-7f206403f000 r-xp 00000000 08:08 806476 /usr/lib/evolution-data-server/camel-providers/libcamelsmtp.so 7f206403f000-7f206423e000 ---p 0000a000 08:08 806476 /usr/lib/evolution-data-server/camel-providers/libcamelsmtp.so 7f206423e000-7f206423f000 r--p 00009000 08:08 806476 /usr/lib/evolution-data-server/camel-providers/libcamelsmtp.so 7f206423f000-7f2064240000 rw-p 0000a000 08:08 806476 /usr/lib/evolution-data-server/camel-providers/libcamelsmtp.so 7f2064240000-7f2064267000 r-xp 00000000 08:08 806468 /usr/lib/evolution-data-server/camel-providers/libcamellocal.so 7f2064267000-7f2064466000 ---p 00027000 08:08 806468 /usr/lib/evolution-data-server/camel-providers/libcamellocal.so 7f2064466000-7f2064468000 r--p 00026000 08:08 806468 /usr/lib/evolution-data-server/camel-providers/libcamellocal.so 7f2064468000-7f2064469000 rw-p 00028000 08:08 806468 /usr/lib/evolution-data-server/camel-providers/libcamellocal.so 7f2064469000-7f206446a000 ---p 00000000 00:00 0 7f206446a000-7f2064c6a000 rw-p 00000000 00:00 0 7f2064c6a000-7f2064c76000 r-xp 00000000 08:08 1051083 /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so 7f2064c76000-7f2064e75000 ---p 0000c000 08:08 1051083 /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so 7f2064e75000-7f2064e76000 r--p 0000b000 08:08 1051083 /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so 7f2064e76000-7f2064e77000 rw-p 0000c000 08:08 1051083 /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so 7f2064e77000-7f2064e78000 ---p 00000000 00:00 0 7f2064e78000-7f2065678000 rw-p 00000000 00:00 0 7f2065678000-7f2065679000 ---p 00000000 00:00 0 7f2065679000-7f2065e79000 rw-p 00000000 00:00 0 7f2065e79000-7f2065e7a000 ---p 00000000 00:00 0 7f2065e7a000-7f206667a000 rw-p 00000000 00:00 0 7f206667a000-7f2066683000 r-xp 00000000 08:08 1179744 /lib/x86_64-linux-gnu/libcrypt-2.27.so 7f2066683000-7f2066882000 ---p 00009000 08:08 1179744 /lib/x86_64-linux-gnu/libcrypt-2.27.so 7f2066882000-7f2066883000 r--p 00008000 08:08 1179744 /lib/x86_64-linux-gnu/libcrypt-2.27.so 7f2066883000-7f2066884000 rw-p 00009000 08:08 1179744 /lib/x86_64-linux-gnu/libcrypt-2.27.so 7f2066884000-7f20668b2000 rw-p 00000000 00:00 0 7f20668b2000-7f20668f8000 r-xp 00000000 08:08 795028 /usr/lib/x86_64-linux-gnu/libhx509.so.5.0.0 7f20668f8000-7f2066af7000 ---p 00046000 08:08 795028 /usr/lib/x86_64-linux-gnu/libhx509.so.5.0.0 7f2066af7000-7f2066afa000 r--p 00045000 08:08 795028 /usr/lib/x86_64-linux-gnu/libhx509.so.5.0.0 7f2066afa000-7f2066afb000 rw-p 00048000 08:08 795028 /usr/lib/x86_64-linux-gnu/libhx509.so.5.0.0 7f2066afb000-7f2066afc000 rw-p 00000000 00:00 0 7f2066afc000-7f2066b0a000 r-xp 00000000 08:08 795012 /usr/lib/x86_64-linux-gnu/libheimbase.so.1.0.0 7f2066b0a000-7f2066d09000 ---p 0000e000 08:08 795012 /usr/lib/x86_64-linux-gnu/libheimbase.so.1.0.0 7f2066d09000-7f2066d0a000 r--p 0000d000 08:08 795012 /usr/lib/x86_64-linu