{"id":61445,"date":"2025-04-29T13:51:53","date_gmt":"2025-04-29T05:51:53","guid":{"rendered":"https:\/\/fwq.ai\/blog\/61445\/"},"modified":"2025-04-29T13:51:53","modified_gmt":"2025-04-29T05:51:53","slug":"%e4%bd%bf%e7%94%a8gdb%e8%b0%83%e8%af%95linux%e5%86%85%e6%a0%b8%e7%9a%84%e5%b8%b8%e7%94%a8%e9%85%8d%e7%bd%ae%e6%8a%80%e5%b7%a7-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/61445\/","title":{"rendered":"\u4f7f\u7528GDB\u8c03\u8bd5Linux\u5185\u6838\u7684\u5e38\u7528\u914d\u7f6e\u6280\u5de7"},"content":{"rendered":"<p>\u4f7f\u7528gdb\u8c03\u8bd5linux\u5185\u6838\u7684\u5e38\u7528\u914d\u7f6e\u6280\u5de7<\/p>\n<p>\u5f15\u8a00\uff1a<br \/>\u5728Linux\u5f00\u53d1\u4e2d\uff0c\u4f7f\u7528GDB\u8c03\u8bd5\u5185\u6838\u662f\u4e00\u9879\u975e\u5e38\u91cd\u8981\u7684\u6280\u80fd\u3002GDB\u662f\u4e00\u6b3e\u529f\u80fd\u5f3a\u5927\u7684\u8c03\u8bd5\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u5feb\u901f\u5b9a\u4f4d\u548c\u89e3\u51b3\u5185\u6838\u4e2d\u7684bug\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u5e38\u7528\u7684GDB\u914d\u7f6e\u6280\u5de7\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528GDB\u8c03\u8bd5Linux\u5185\u6838\u3002<\/p>\n<p>\u4e00\u3001\u914d\u7f6eGDB\u73af\u5883<br \/>\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5728Linux\u7cfb\u7edf\u4e0a\u914d\u7f6eGDB\u7684\u73af\u5883\u3002\u8bf7\u786e\u4fdd\u4f60\u7684\u7cfb\u7edf\u5df2\u7ecf\u5b89\u88c5\u4e86GDB\u5de5\u5177\u3002\u5982\u679c\u6ca1\u6709\u5b89\u88c5\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u6765\u5b89\u88c5\uff1a<br \/>$ sudo apt-get install gdb<\/p>\n<p>\u4e8c\u3001\u7f16\u8bd1\u5185\u6838<br \/>\u5728\u4f7f\u7528GDB\u8c03\u8bd5\u5185\u6838\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u7f16\u8bd1\u5185\u6838\uff0c\u5e76\u751f\u6210\u8c03\u8bd5\u4fe1\u606f\u3002<\/p>\n<ol>\n<li>\u4e0b\u8f7d\u5185\u6838\u6e90\u7801<br \/>\u901a\u8fc7Git\u6216\u8005\u5b98\u65b9\u7f51\u7ad9\u4e0b\u8f7d\u60f3\u8981\u8c03\u8bd5\u7684\u5185\u6838\u6e90\u7801\u3002<\/li>\n<li>\u914d\u7f6e\u5185\u6838<br \/>\u8fdb\u5165\u5185\u6838\u6e90\u7801\u76ee\u5f55\uff0c\u5e76\u6267\u884cmake menuconfig\u547d\u4ee4\u6765\u914d\u7f6e\u5185\u6838\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u9700\u8981\u542f\u7528\u4e00\u4e9b\u8c03\u8bd5\u9009\u9879\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u6765\u542f\u7528\u8c03\u8bd5\u9009\u9879\uff1a<br \/>$ make menuconfig<\/li>\n<\/ol>\n<p>\u5728\u914d\u7f6e\u754c\u9762\u4e2d\u627e\u5230\u4ee5\u4e0b\u9009\u9879\uff0c\u5e76\u8fdb\u884c\u542f\u7528\uff1a<\/p>\n<ul>\n<li>Kernel hacking -&gt; Kernel debugging -&gt; GDB\/KDB -&gt; Enable KGDB\/KDB Support<\/li>\n<li>Kernel hacking -&gt; Compile-time checks and compiler options -&gt; Compile the kernel with debug info<\/li>\n<\/ul>\n<p>\u4fdd\u5b58\u5e76\u9000\u51fa\u914d\u7f6e\u754c\u9762\u3002<\/p>\n<ol>\n<li>\u7f16\u8bd1\u5185\u6838<br \/>\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u7f16\u8bd1\u5185\u6838\uff1a<br \/>$ make<\/li>\n<\/ol>\n<p>\u7f16\u8bd1\u5b8c\u6210\u540e\uff0c\u4f1a\u5728\u6e90\u7801\u76ee\u5f55\u4e0b\u751f\u6210vmlinuz\u548cvmlinux\u6587\u4ef6\u3002<\/p>\n<p>\u4e09\u3001\u914d\u7f6e\u5185\u6838\u542f\u52a8\u53c2\u6570<br \/>\u5728\u4f7f\u7528GDB\u8c03\u8bd5\u5185\u6838\u4e4b\u524d\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u5728\u5185\u6838\u542f\u52a8\u65f6\u6dfb\u52a0\u4e00\u4e9b\u53c2\u6570\u3002<\/p>\n<ol>\n<li>\u4fee\u6539GRUB\u6587\u4ef6<br \/>\u6253\u5f00GRUB\u6587\u4ef6\uff0c\u5e76\u627e\u5230&#8221;default&#8221;\u53d8\u91cf\u3002\u5c06\u5176\u503c\u4fee\u6539\u4e3a\u6240\u652f\u6301\u7684\u5185\u6838\u7248\u672c\u3002\u4f8b\u5982\uff1a<br \/>default=0<\/li>\n<\/ol>\n<p>\u4fdd\u5b58\u5e76\u9000\u51fa\u3002<\/p>\n<ol>\n<li>\u6dfb\u52a0\u8c03\u8bd5\u53c2\u6570<br \/>\u5728GRUB\u6587\u4ef6\u4e2d\u627e\u5230\u6240\u9009\u62e9\u7248\u672c\u7684&#8221;linux&#8221;\u884c\uff0c\u5e76\u5728\u5176\u672b\u5c3e\u6dfb\u52a0\u8c03\u8bd5\u53c2\u6570\u3002\u4f8b\u5982\uff1a<br \/>linux \/boot\/vmlinuz-5.4.0-74-generic root=\/dev\/sda1 ro debug<\/li>\n<\/ol>\n<p>\u4fdd\u5b58\u5e76\u9000\u51fa\u3002<\/p>\n<ol>\n<li>\u66f4\u65b0GRUB\u914d\u7f6e<br \/>\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u66f4\u65b0GRUB\u914d\u7f6e\uff1a<br \/>$ sudo update-grub<\/li>\n<\/ol>\n<p>\u56db\u3001\u4f7f\u7528GDB\u8c03\u8bd5\u5185\u6838<br \/>\u73b0\u5728\uff0c\u914d\u7f6e\u5df2\u7ecf\u5b8c\u6210\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528GDB\u6765\u8c03\u8bd5Linux\u5185\u6838\u4e86\u3002<\/p>\n<ol>\n<li>\u542f\u52a8GDB<br \/>\u6253\u5f00\u7ec8\u7aef\uff0c\u5e76\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u542f\u52a8GDB\uff1a<br \/>$ gdb vmlinux<\/li>\n<li>\u914d\u7f6eGDB<br \/>\u5728GDB\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u505a\u4e00\u4e9b\u989d\u5916\u7684\u914d\u7f6e\u3002\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u914d\u7f6eGDB\uff1a<\/li>\n<li>\u8bbe\u5b9a\u8c03\u8bd5\u76ee\u6807\uff1a<br \/>(gdb) target remote :1234<\/li>\n<\/ol>\n<ul>\n<li>\u8bbe\u5b9a\u8c03\u8bd5\u7b26\u53f7\u6587\u4ef6\uff1a<br \/>(gdb) symbol-file vmlinux<\/li>\n<li>\u8bbe\u7f6e\u65ad\u70b9\uff1a<br \/>(gdb) break main<\/li>\n<\/ul>\n<p>\u4fdd\u5b58\u5e76\u9000\u51fa\u3002<\/p>\n<ol>\n<li>\u542f\u52a8\u8c03\u8bd5\u4f1a\u8bdd<br \/>\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u542f\u52a8\u8c03\u8bd5\u4f1a\u8bdd\uff1a<br \/>(gdb) continue<\/li>\n<\/ol>\n<p>\u6b64\u65f6\uff0cGDB\u5c06\u4f1a\u8fde\u63a5\u5230\u5185\u6838\u8c03\u8bd5\u5668\uff0c\u5e76\u5728main\u51fd\u6570\u5904\u505c\u6b62\u6267\u884c\u3002<\/p>\n<ol>\n<li>\u8fdb\u884c\u8c03\u8bd5<br \/>\u4f7f\u7528GDB\u63d0\u4f9b\u7684\u5404\u79cd\u547d\u4ee4\u548c\u8c03\u8bd5\u6280\u5de7\uff0c\u4f8b\u5982\u67e5\u770b\u53d8\u91cf\u503c\u3001\u4fee\u6539\u53d8\u91cf\u503c\u3001\u67e5\u770b\u51fd\u6570\u8c03\u7528\u5806\u6808\u7b49\uff0c\u6765\u5b9a\u4f4d\u548c\u89e3\u51b3\u5185\u6838\u4e2d\u7684bug\u3002<\/li>\n<\/ol>\n<p>\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u67e5\u770b\u53d8\u91cf\u7684\u503c\uff1a<br \/>(gdb) print my_variable<\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u4fee\u6539\u53d8\u91cf\u7684\u503c\uff1a<br \/>(gdb) set var my_variable = 123<\/p>\n<p>\u4e94\u3001\u603b\u7ed3<br \/>\u672c\u6587\u4ecb\u7ecd\u4e86\u4f7f\u7528gdb\u8c03\u8bd5linux\u5185\u6838\u7684\u5e38\u7528\u914d\u7f6e\u6280\u5de7\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5728\u7cfb\u7edf\u4e0a\u914d\u7f6eGDB\u73af\u5883\uff0c\u5e76\u7f16\u8bd1\u5185\u6838\u3002\u7136\u540e\uff0c\u901a\u8fc7\u6dfb\u52a0\u8c03\u8bd5\u53c2\u6570\u6765\u914d\u7f6e\u5185\u6838\u542f\u52a8\u53c2\u6570\u3002\u6700\u540e\uff0c\u4f7f\u7528GDB\u6765\u8c03\u8bd5\u5185\u6838\uff0c\u5e76\u901a\u8fc7\u4f7f\u7528GDB\u63d0\u4f9b\u7684\u5404\u79cd\u547d\u4ee4\u548c\u8c03\u8bd5\u6280\u5de7\uff0c\u6765\u5b9a\u4f4d\u548c\u89e3\u51b3\u5185\u6838\u4e2d\u7684bug\u3002\u901a\u8fc7\u638c\u63e1\u8fd9\u4e9b\u6280\u5de7\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u66f4\u52a0\u9ad8\u6548\u5730\u8fdb\u884c\u5185\u6838\u8c03\u8bd5\u548c\u5f00\u53d1\u5de5\u4f5c\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u4f7f\u7528GDB\u8c03\u8bd5Linux\u5185\u6838\u7684\u5e38\u7528\u914d\u7f6e\u6280\u5de7\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8FDCServers\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528gdb\u8c03\u8bd5linux\u5185\u6838\u7684\u5e38\u7528\u914d\u7f6e\u6280\u5de7 \u5f15\u8a00\uff1a\u5728Linux\u5f00\u53d1\u4e2d\uff0c\u4f7f\u7528GDB\u8c03\u8bd5\u5185\u6838\u662f\u4e00\u9879\u975e\u5e38\u91cd\u8981\u7684\u6280\u80fd\u3002GDB\u662f\u4e00\u6b3e\u529f\u80fd\u5f3a\u5927\u7684\u8c03\u8bd5\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u5feb\u901f\u5b9a\u4f4d\u548c\u89e3\u51b3\u5185\u6838\u4e2d\u7684bug\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u5e38\u7528\u7684GDB\u914d\u7f6e\u6280\u5de7\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528GDB\u8c03\u8bd5Linux\u5185\u6838\u3002 \u4e00\u3001\u914d\u7f6eGDB\u73af\u5883\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5728Linux\u7cfb\u7edf\u4e0a\u914d\u7f6eGDB\u7684\u73af\u5883\u3002\u8bf7\u786e\u4fdd\u4f60\u7684\u7cfb\u7edf\u5df2\u7ecf\u5b89\u88c5\u4e86GDB\u5de5\u5177\u3002\u5982\u679c\u6ca1\u6709\u5b89\u88c5\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u6765\u5b89\u88c5\uff1a$ sudo apt-get install gdb \u4e8c\u3001\u7f16\u8bd1\u5185\u6838\u5728\u4f7f\u7528GDB\u8c03\u8bd5\u5185\u6838\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u7f16\u8bd1\u5185\u6838\uff0c\u5e76\u751f\u6210\u8c03\u8bd5\u4fe1\u606f\u3002 \u4e0b\u8f7d\u5185\u6838\u6e90\u7801\u901a\u8fc7Git\u6216\u8005\u5b98\u65b9\u7f51\u7ad9\u4e0b\u8f7d\u60f3\u8981\u8c03\u8bd5\u7684\u5185\u6838\u6e90\u7801\u3002 \u914d\u7f6e\u5185\u6838\u8fdb\u5165\u5185\u6838\u6e90\u7801\u76ee\u5f55\uff0c\u5e76\u6267\u884cmake menuconfig\u547d\u4ee4\u6765\u914d\u7f6e\u5185\u6838\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u9700\u8981\u542f\u7528\u4e00\u4e9b\u8c03\u8bd5\u9009\u9879\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u6765\u542f\u7528\u8c03\u8bd5\u9009\u9879\uff1a$ make menuconfig \u5728\u914d\u7f6e\u754c\u9762\u4e2d\u627e\u5230\u4ee5\u4e0b\u9009\u9879\uff0c\u5e76\u8fdb\u884c\u542f\u7528\uff1a Kernel hacking -&gt; Kernel debugging -&gt; GDB\/KDB -&gt; Enable KGDB\/KDB Support Kernel hacking -&gt; Compile-time checks and compiler options -&gt; Compile the kernel with debug info \u4fdd\u5b58\u5e76\u9000\u51fa\u914d\u7f6e\u754c\u9762\u3002 \u7f16\u8bd1\u5185\u6838\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u7f16\u8bd1\u5185\u6838\uff1a$ make \u7f16\u8bd1\u5b8c\u6210\u540e\uff0c\u4f1a\u5728\u6e90\u7801\u76ee\u5f55\u4e0b\u751f\u6210vmlinuz\u548cvmlinux\u6587\u4ef6\u3002 \u4e09\u3001\u914d\u7f6e\u5185\u6838\u542f\u52a8\u53c2\u6570\u5728\u4f7f\u7528GDB\u8c03\u8bd5\u5185\u6838\u4e4b\u524d\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u5728\u5185\u6838\u542f\u52a8\u65f6\u6dfb\u52a0\u4e00\u4e9b\u53c2\u6570\u3002 \u4fee\u6539GRUB\u6587\u4ef6\u6253\u5f00GRUB\u6587\u4ef6\uff0c\u5e76\u627e\u5230&#8221;default&#8221;\u53d8\u91cf\u3002\u5c06\u5176\u503c\u4fee\u6539\u4e3a\u6240\u652f\u6301\u7684\u5185\u6838\u7248\u672c\u3002\u4f8b\u5982\uff1adefault=0 \u4fdd\u5b58\u5e76\u9000\u51fa\u3002 \u6dfb\u52a0\u8c03\u8bd5\u53c2\u6570\u5728GRUB\u6587\u4ef6\u4e2d\u627e\u5230\u6240\u9009\u62e9\u7248\u672c\u7684&#8221;linux&#8221;\u884c\uff0c\u5e76\u5728\u5176\u672b\u5c3e\u6dfb\u52a0\u8c03\u8bd5\u53c2\u6570\u3002\u4f8b\u5982\uff1alinux \/boot\/vmlinuz-5.4.0-74-generic root=\/dev\/sda1 ro debug \u4fdd\u5b58\u5e76\u9000\u51fa\u3002 \u66f4\u65b0GRUB\u914d\u7f6e\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u66f4\u65b0GRUB\u914d\u7f6e\uff1a$ sudo [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-61445","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/61445","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=61445"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/61445\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=61445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=61445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=61445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}