{"id":1511,"date":"2015-01-28T10:50:21","date_gmt":"2015-01-28T02:50:21","guid":{"rendered":"http:\/\/www.51cos.com\/?p=1511"},"modified":"2015-01-28T10:50:29","modified_gmt":"2015-01-28T02:50:29","slug":"%e5%86%85%e6%a0%b8%e5%bc%82%e5%b8%b8%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"http:\/\/www.51cos.com\/?p=1511","title":{"rendered":"\u5185\u6838\u5f02\u5e38\u5206\u6790"},"content":{"rendered":"

1\uff0e\u5b9e\u9a8c\u8981\u6c42<\/strong><\/p>\n

\uff081\uff09\u7f16\u8bd1\u8fd0\u884c\u63d0\u4f9b\u7684\u5b9e\u9a8c\u4ee3\u7801\u3002<\/p>\n

\uff082\uff09\u901a\u8fc7oops\u9519\u8bef\u5206\u6790\u65b9\u6cd5\uff0c\u5b9a\u4f4d\u4ee3\u7801\u4e2d\u975e\u6cd5\u8bbf\u95ee\u7684\u8bed\u53e5\u3002<\/p>\n

\uff083\uff09\u5b9e\u9a8c\u8981\u6c42\u89c6\u9891\u8bb2\u89e3<\/p>\n

<<\u5d4c\u5165\u5f0fLinux\u5185\u6838\u9a71\u52a8\u8fdb\u9636\u73ed>>\/\u7b2c5\u5929-\u8fdb\u7a0b\u7ba1\u7406\/\u57f9\u8bad\u89c6\u9891\/\u5185\u6838\u5f02\u5e38\u5206\u6790-\u5b9e\u9a8c\u8981\u6c42.avi\u3002<\/p>\n

2\uff0e\u5b9e\u9a8c\u5668\u6750<\/strong><\/p>\n

1\uff09\u8f6f\u4ef6<\/p>\n

\uff081\uff09\u5b89\u88c5\u4e86RHEL5\u7684VMware\u865a\u62df\u673a\u3002<\/p>\n

\uff082\uff09Linux\u5185\u6838\u6e90\u4ee3\u7801\u3002<\/p>\n

2\uff09\u786c\u4ef6<\/p>\n

\uff081\uff09PC\u4e00\u53f0\u3002<\/p>\n

\uff082\uff09GQ2440\u3001mini2440\u6216TQ2440\u5f00\u53d1\u677f\u3002<\/p>\n

3\uff0e\u80cc\u666f\u77e5\u8bc6<\/strong><\/p>\n

1\uff09\u57f9\u8bad\u89c6\u9891<\/p>\n

<<\u5d4c\u5165\u5f0fLinux\u5185\u6838\u9a71\u52a8\u8fdb\u9636\u73ed>>\/\u7b2c5\u5929-\u8fdb\u7a0b\u7ba1\u7406\/\u57f9\u8bad\u89c6\u9891\/ Proc\u6587\u4ef6\u7cfb\u7edf.avi\u3002<\/p>\n

2\uff09oops\u6982\u5ff5<\/p>\n

oops \u53ef\u4ee5\u770b\u6210\u662f\u5185\u6838\u7ea7\u7684Segmentation Fault\u3002\u5e94\u7528\u7a0b\u5e8f\u5982\u679c\u8fdb\u884c\u4e86\u975e\u6cd5\u5185\u5b58\u8bbf\u95ee\u6216\u6267\u884c\u4e86\u975e\u6cd5\u6307\u4ee4\uff0c\u4f1a\u5f97\u5230Segfault\u4fe1\u53f7\uff0c\u4e00\u822c\u884c\u4e3a\u662fcoredump\uff0c\u5e94\u7528\u7a0b\u5e8f\u4e5f\u53ef\u4ee5\u81ea\u5df1\u622a\u83b7 Segfault\u4fe1\u53f7\uff0c\u81ea\u884c\u5904\u7406\u3002\u5982\u679c\u5185\u6838\u81ea\u5df1\u72af\u4e86\u8fd9\u6837\u7684\u9519\u8bef\uff0c\u5219\u4f1a\u5f39\u51faoops\u4fe1\u606f\u3002<\/p>\n

\u7b80\u5355\u5730\u8bf4\uff0coops\u662f\u5185\u6838\u7a0b\u5e8f\u9519\u8bef\u5f15\u53d1\u7684\u4e00\u79cddebug\u548c\u4fdd\u62a4\u673a\u5236\uff0c\u7cfb\u7edf\u4f1adump\u51fa\u5185\u6838\u6620\u50cf\uff0c\u91cc\u9762\u5305\u542b\u4e86\u5f53\u65f6CPU\u7684\u72b6\u6001\u3001\u8fdb\u7a0b\u7684\u72b6\u6001\u3001\u5185\u6838\u5806\u548c\u6808\u7684\u72b6\u6001\u7b49\u3002<\/p>\n

4\uff0e\u5b9e\u9a8c\u6b65\u9aa4<\/strong><\/p>\n

\uff081\uff09\u8fdb\u5165\u5b9e\u9a8c\u4ee3\u7801\u76ee\u5f552-5-3\uff0c\u5982\u56fe6-14\u6240\u793a\uff0c\u53ef\u4ee5\u770b\u5230\u7528\u4e8eoops\u8c03\u8bd5\u5b9e\u9a8c\u7684\u53c2\u8003\u4ee3\u7801oops.c\u548cMakefile\u3002<\/p>\n\n\n\n\n
\"\"<\/a><\/td>\n<\/tr>\n
\u56fe6-14\u00a0 \u8fdb\u5165\u5b9e\u9a8c\u4ee3\u7801\u76ee\u5f55<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\uff082\uff09\u4f7f\u7528\u547d\u4ee4\uff1amake\uff0c\u7f16\u8bd1\u8be5oops\u6a21\u5757\uff0c\u5e76\u5c06opps.ko\u590d\u5236\u503c\/nfs\/rootfs\/lib\/modules\/\u4e0b\u5bf9\u5e94\u5185\u6838\u7248\u672c\u7684\u6a21\u5757\u76ee\u5f55\u4e0b\uff0c\u5982\u56fe6-15\u6240\u793a\u3002<\/p>\n\n\n\n\n
\"\"<\/a><\/td>\n<\/tr>\n
\u56fe6-15\u00a0 \u7f16\u8bd1\u6a21\u5757<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\uff083\uff09\u542f\u52a8\u5f00\u53d1\u677f\uff0c\u901a\u8fc7NFS\u6302\u8f7d\u6839\u6587\u4ef6\u7cfb\u7edf\u3002\u8fdb\u5165\/lib\/modules\/2.6.32.2-GQ2440\u76ee\u5f55\u4e0b\uff0c\u4f7f\u7528\u547d\u4ee4\uff1ainsmod proc.ko\uff0c\u63d2\u5165\u6a21\u5757\uff0c\u5982\u56fe6-16\u6240\u793a\uff0c\u53ef\u4ee5\u770b\u5230\u4ea7\u751f\u4e86kernel oops\u3002<\/p>\n\n\n\n\n
\"\"<\/a><\/td>\n<\/tr>\n
\u56fe6-16\u00a0 \u4ea7\u751foops<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u5185\u6838\u5f02\u5e38\u5206\u6790\uff082\uff09<\/strong><\/p>\n

\u4e3a\u4e86\u80fd\u770b\u5230oops\u7684\u5168\u90e8\u4fe1\u606f\uff0c\u53ef\u4ee5\u5229\u7528\u8d85\u7ea7\u7ec8\u7aef\u5c06\u6253\u5370\u4fe1\u606f\u8f93\u51fa\u5230\u6587\u4ef6\u3002\u901a\u8fc7\u8d85\u7ea7\u7ec8\u7aef\u83dc\u5355\u3010\u4f20\u9001\uff08T\uff09\u3011|\u3010\u6355\u83b7\u6587\u5b57\uff08C\uff09\u3011\u9009\u62e9\u8f93\u51fa\u7684\u6587\u672c\u6587\u4ef6\u3002\u4e0b\u9762\u662f\u63d2\u5165\u6a21\u5757\u65f6\u6355\u83b7\u5230\u7684\u5168\u90e8oops\u4fe1\u606f\u3002<\/p>\n

    \n
  1. oops\u00a0init<\/li>\n
  2. Function\u00a0A<\/li>\n
  3. Function\u00a0B<\/li>\n
  4. Function\u00a0C<\/li>\n
  5. Function\u00a0D<\/li>\n
  6. Unable\u00a0to\u00a0handle\u00a0kernel\u00a0NULL\u00a0pointer\u00a0dereference\u00a0at\u00a0virtual\u00a0address\u00a000000000<\/li>\n
  7. pgd<\/span>\u00a0=\u00a0c39d8000<\/span><\/li>\n
  8. [00000000]\u00a0*pgd<\/span>=339cf031<\/span>,\u00a0*pte<\/span>=00000000<\/span>,\u00a0*ppte<\/span>=00000000<\/span><\/li>\n
  9. Internal\u00a0error:\u00a0Oops:\u00a0817\u00a0[#1]<\/li>\n
  10. last\u00a0sysfs\u00a0file:\u00a0\/sys\/devices\/platform\/soc-audio\/sound\/card0\/mixer\/dev<\/li>\n
  11. Modules\u00a0linked\u00a0in:\u00a0oops\uff08+\uff09<\/li>\n
  12. CPU:\u00a00\u00a0\u00a0\u00a0\u00a0Not\u00a0tainted\u00a0\u00a0\uff082.6.32.2-GQ2440\u00a0#18\uff09<\/li>\n
  13. PC\u00a0is\u00a0at\u00a0func_D+0x1c\/0x28\u00a0[oops]<\/li>\n
  14. LR\u00a0is\u00a0at\u00a0release_console_sem+0x1bc\/0x214<\/li>\n
  15. pc\u00a0:\u00a0[<<\/span>bf000038<\/span>><\/span>]\u00a0\u00a0\u00a0\u00a0lr\u00a0:\u00a0[<<\/span>c004b7a4<\/span>><\/span>]\u00a0\u00a0\u00a0\u00a0psr:\u00a060000013<\/li>\n
  16. sp\u00a0:\u00a0c39d5ee0\u00a0\u00a0ip\u00a0:\u00a0c39d5e10\u00a0\u00a0fp\u00a0:\u00a0c39d5eec<\/li>\n
  17. r10:\u00a000000000\u00a0\u00a0r9\u00a0:\u00a0c05096cc\u00a0\u00a0r8\u00a0:\u00a0bf0000a4<\/li>\n
  18. r7\u00a0:\u00a0c39d4000\u00a0\u00a0r6\u00a0:\u00a0001dbfd8\u00a0\u00a0r5\u00a0:\u00a0bf000134\u00a0\u00a0r4\u00a0:\u00a0000009c9<\/li>\n
  19. r3\u00a0:\u00a000000000\u00a0\u00a0r2\u00a0:\u00a00000000b\u00a0\u00a0r1\u00a0:\u00a000004e5e\u00a0\u00a0r0\u00a0:\u00a00000000e<\/li>\n
  20. Flags:\u00a0nZCv\u00a0\u00a0IRQs\u00a0on\u00a0\u00a0FIQs\u00a0on\u00a0\u00a0Mode\u00a0SVC_32\u00a0\u00a0ISA\u00a0ARM\u00a0\u00a0Segment\u00a0user<\/li>\n
  21. Control:\u00a0c000717f\u00a0\u00a0Table:\u00a0339d8000\u00a0\u00a0DAC:\u00a000000015<\/li>\n
  22. Process\u00a0insmod\u00a0\uff08pid:\u00a0716,\u00a0stack\u00a0limit<\/span>\u00a0=\u00a00xc39d4270<\/span>\uff09<\/li>\n
  23. Stack:\u00a0\uff080xc39d5ee0\u00a0to\u00a00xc39d6000\uff09<\/li>\n
  24. 5ee0:\u00a0c39d5efc\u00a0c39d5ef0\u00a0bf00005c\u00a0bf00002c\u00a0c39d5f0c\u00a0c39d5f00\u00a0bf00007c\u00a0bf000054<\/li>\n
  25. 5f00:\u00a0c39d5f1c\u00a0c39d5f10\u00a0bf00009c\u00a0bf000074\u00a0c39d5f2c\u00a0c39d5f20\u00a0bf0000bc\u00a0bf000094<\/li>\n
  26. 5f20:\u00a0c39d5f7c\u00a0c39d5f30\u00a0c003132c\u00a0bf0000b4\u00a000000000\u00a000000000\u00a000000000\u00a000000000<\/li>\n
  27. 5f40:\u00a000000000\u00a000000000\u00a0bf000134\u00a0001dbfd8\u00a000000000\u00a0000009c9\u00a0bf000134\u00a0001dbfd8<\/li>\n
  28. 5f60:\u00a000000000\u00a0c0032068\u00a0c39d4000\u00a000000000\u00a0c39d5fa4\u00a0c39d5f80\u00a0c0070f24\u00a0c0031300<\/li>\n
  29. 5f80:\u00a0c009ba9c\u00a0c009b998\u00a000000000\u00a0bec59e68\u00a000000000\u00a000000080\u00a000000000\u00a0c39d5fa8<\/li>\n
  30. 5fa0:\u00a0c0031ec0\u00a0c0070e68\u00a000000000\u00a0bec59e68\u00a0001dbfd8\u00a0000009c9\u00a0001927dc\u00a000000000<\/li>\n
  31. 5fc0:\u00a000000000\u00a0bec59e68\u00a000000000\u00a000000080\u00a0bec59e68\u00a0001927dc\u00a000000000\u00a000000002<\/li>\n
  32. 5fe0:\u00a000000069\u00a0bec597b4\u00a00002bff8\u00a000009494\u00a060000010\u00a0001dbfd8\u00a000000000\u00a000000000<\/li>\n
  33. Backtrace:<\/li>\n
  34. [<<\/span>bf00001c<\/span>><\/span>]\u00a0\uff08func_D+0x0\/0x28\u00a0[oops]\uff09\u00a0from\u00a0[<<\/span>bf00005c<\/span>><\/span>]\u00a0\uff08func_C+0x18\/0x20\u00a0[oops]\uff09<\/li>\n
  35. [<<\/span>bf000044<\/span>><\/span>]\u00a0\uff08func_C+0x0\/0x20\u00a0[oops]\uff09\u00a0from\u00a0[<<\/span>bf00007c<\/span>><\/span>]\u00a0\uff08func_B+0x18\/0x20\u00a0[oops]\uff09<\/li>\n
  36. [<<\/span>bf000064<\/span>><\/span>]\u00a0\uff08func_B+0x0\/0x20\u00a0[oops]\uff09\u00a0from\u00a0[<<\/span>bf00009c<\/span>><\/span>]\u00a0\uff08func_A+0x18\/0x20\u00a0[oops]\uff09<\/li>\n
  37. [<<\/span>bf000084<\/span>><\/span>]\u00a0\uff08func_A+0x0\/0x20\u00a0[oops]\uff09\u00a0from\u00a0[<<\/span>bf0000bc<\/span>><\/span>]\u00a0\uff08init_module+0x18\/0x24\u00a0[oops]\uff09<\/li>\n
  38. [<<\/span>bf0000a4<\/span>><\/span>]\u00a0\uff08init_module+0x0\/0x24\u00a0[oops]\uff09\u00a0from\u00a0[<<\/span>c003132c<\/span>><\/span>]\u00a0\uff08do_one_initcall+0x3c\/0x1d0\uff09<\/li>\n
  39. [<<\/span>c00312f0<\/span>><\/span>]\u00a0\uff08do_one_initcall+0x0\/0x1d0\uff09\u00a0from\u00a0[<<\/span>c0070f24<\/span>><\/span>]\u00a0\uff08sys_init_module+0xcc\/0x200\uff09<\/li>\n
  40. [<<\/span>c0070e58<\/span>><\/span>]\u00a0\uff08sys_init_module+0x0\/0x200\uff09\u00a0from\u00a0[<<\/span>c0031ec0<\/span>><\/span>]\u00a0\uff08ret_fast_syscall+0x0\/0x28\uff09<\/li>\n
  41. \u00a0r7:00000080\u00a0r6:00000000\u00a0r5:bec59e68\u00a0r4:00000000<\/li>\n
  42. Code:\u00a0e59f0010\u00a0eb412fb6\u00a0e3a0200b\u00a0e3a03000\u00a0\uff08e5832000\uff09<\/li>\n
  43. —[\u00a0end\u00a0trace\u00a04e70d5baadf4ccd0\u00a0]—<\/li>\n
  44. Segmentation\u00a0fault<\/li>\n<\/ol>\n

    \u4e00\u4e0b\u5b50\u51fa\u6765\u8fd9\u4e48\u591a\u4fe1\u606f\u53ef\u80fd\u4f1a\u8ba9\u4eba\u611f\u5230\u5934\u75db\uff0c\u4f46\u4ed4\u7ec6\u770b\u4e00\u4e0b\u8fd9\u4e9b\u4fe1\u606f\u5c31\u4f1a\u53d1\u73b0\u5b83\u4eec\u4ec5\u4ec5\u662f\u5c06\u51fa\u9519\u524d\u7684\u5bc4\u5b58\u5668\u3001\u6808\u3001\u5185\u5b58\u7684\u60c5\u51b5\u7b80\u5355\u7684\u7f57\u5217\u51fa\u6765\u3002\u5206\u6790oops\u4fe1\u606f\uff0c\u5e94\u8be5\u9996\u5148\u5f04\u660e\u767d\u4e00\u4e2a\u5b8c\u6574\u7684oops\u662f\u600e\u4e48\u6784\u6210\u7684\u3002\u9996\u5148\uff0c\u5206\u6790\u6700\u5f00\u5934\u7684\u90e8\u5206\u4fe1\u606f\u3002<\/p>\n

      \n
    1. oops\u00a0init<\/li>\n
    2. Function\u00a0A<\/li>\n
    3. Function\u00a0B<\/li>\n
    4. Function\u00a0C<\/li>\n
    5. Function\u00a0D<\/li>\n
    6. Unable\u00a0to\u00a0handle\u00a0kernel\u00a0NULL\u00a0pointer\u00a0dereference\u00a0at\u00a0virtual\u00a0address\u00a000000000<\/li>\n<\/ol>\n

      \u53ef\u4ee5\u770b\u51fa\uff0c\u524d\u97625\u884c\u662f\u52a0\u8f7d\u6a21\u5757\u65f6\uff0c\u7531\u6a21\u5757\u4e2d\u7684printk\u6253\u5370\u51fa\u6765\u7684\u8bed\u53e5\u3002\u4f46\u53d1\u73b0\u5728\u6253\u5370”Function D”\u540e\uff0c\u5185\u6838\u63d0\u793a”Unable to handle kernel NULL pointer dereference at virtual address 00000000″\u3002\u5f88\u663e\u7136\uff0c\u8fd9\u8bf4\u660e\u5728\u6253\u5370\u51fa”Function D”\u4e4b\u540e\uff0c\u6a21\u5757\u56e0\u4e3a\u8bbf\u95ee\u4e86\u7a7a\u6307\u9488\u800c\u51fa\u9519\u3002\u5982\u679c\u8fd9\u4e2a\u65f6\u5019\u8fdb\u5165\u53c2\u8003\u4ee3\u7801\u4f1a\u53d1\u73b0\uff0c\u5728\u8c03\u7528printk\uff08”Function D”\uff09\u4e4b\u540e\uff0c\u4ec5\u6709\u4e00\u6761\u8bed\u53e5”*p =a+5″\uff0c\u7531\u6b64\u53ef\u4ee5\u5f88\u8f7b\u677e\u5730\u786e\u5b9a\uff0c\u975e\u6cd5\u7684\u5730\u5740\u8bbf\u95ee\u5c31\u51fa\u73b0\u5728\u90a3\u91cc\u4e86\u3002\u5f53\u7136\uff0c\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u4e0d\u4f1a\u6709\u8fd9\u4e48\u7b80\u5355\u7684\u60c5\u51b5\uff0c\u56e0\u6b64\uff0c\u8fd8\u5f97\u627e\u51fa\u5176\u4ed6\u66f4\u6709\u6548\u7684\u5b9a\u4f4d\u65b9\u6848\u3002<\/p>\n

       <\/p>\n

      \u5185\u6838\u5f02\u5e38\u5206\u6790\uff083\uff09<\/strong><\/p>\n

      \u63a5\u4e0b\u6765\u7684\u8fd9\u4e9b\u4fe1\u606f\uff0c\u548c\u8fd9\u4e2a\u6a21\u5757\u7684\u8c03\u8bd5\u6ca1\u591a\u5927\u5173\u7cfb\uff0c\u5b83\u4eec\u662f\u865a\u62df\u5185\u5b58\u9875\u76ee\u5f55\u3001\u9875\u8868\u4fe1\u606f\u3001oops\u9519\u8bef\u53f7\u4ee5\u53ca\u6700\u540e\u8bbf\u95ee\u7684sysfs\u6587\u4ef6\u7b49\u3002<\/p>\n

        \n
      1. pgd<\/span>\u00a0=\u00a0c39d8000<\/span><\/li>\n
      2. [00000000]\u00a0*pgd<\/span>=339cf031<\/span>,\u00a0*pte<\/span>=00000000<\/span>,\u00a0*ppte<\/span>=00000000<\/span><\/li>\n
      3. Internal\u00a0error:\u00a0Oops:\u00a0817\u00a0[#1]<\/li>\n
      4. last\u00a0sysfs\u00a0file:\u00a0\/sys\/devices\/platform\/soc-audio\/sound\/card0\/mixer\/dev<\/li>\n
      5. Modules\u00a0linked\u00a0in:\u00a0oops\uff08+\uff09<\/li>\n<\/ol>\n

        \u518d\u63a5\u4e0b\u6765\u662f\u5bc4\u5b58\u5668\u4fe1\u606f\uff0c\u8fd9\u90e8\u5206\u4fe1\u606f\u6bd4\u8f83\u91cd\u8981\uff0c\u5176\u4e2d\u6700\u53ef\u80fd\u5e2e\u52a9\u5b9a\u4f4d\u9519\u8bef\u7684\u5bc4\u5b58\u5668\u5f53\u7136\u662fPC\u3002\u5728\u8fd9\u90e8\u5206\u4fe1\u606f\u4e2d\uff0c\u4e0b\u9762\u8fd9\u53e5\u6700\u4e3a\u5173\u952e\u3002<\/p>\n

          \n
        1. PC\u00a0is\u00a0at\u00a0func_D+0x1c\/0x28\u00a0[oops]<\/li>\n<\/ol>\n

          \u5b83\u76f4\u63a5\u5730\u544a\u8bc9\u4e86\u6211\u4eec\uff0coops\u51fa\u9519\u65f6\uff0cPC\u662f\u4f4d\u4e8efunc_D\u51fd\u6570\u6807\u53f7\u4e4b\u540e\u76840x1c\u5904\uff08\u600e\u4e48\u53bb\u5bfb\u627e\u5b83\uff1f\u540e\u9762\u4f1a\u8fdb\u884c\u5206\u6790\u3002\u53e6\u5916\u8bf7\u601d\u8003\u540e\u9762\u76840x28\u4ee3\u8868\u4ec0\u4e48\uff1f\uff09\u3002<\/p>\n

          \u5bc4\u5b58\u5668\u4fe1\u606f\u4e4b\u540e\u662f\u6808\u4fe1\u606f\uff0c\u4f46\u8fd9\u91cc\u8fd8\u7528\u4e0d\u4e0a\uff0c\u5148\u7565\u8fc7\u3002<\/p>\n

          \u6700\u540e\u7684\u90e8\u5206\uff0c\u4e5f\u5c31\u662fBacktrace\u6807\u53f7\u5f00\u59cb\u7684\u5730\u65b9\uff0c\u5b83\u662foops\u7684\u7cbe\u534e\u3002\u5b83\u8868\u793a\u56de\u6eaf\u4fe1\u606f\uff0c\u4e5f\u544a\u8bc9\u8c03\u8bd5\u8005\u5728oops\u51fa\u9519\u4e4b\u524d\uff0c\u6a21\u5757\u8c03\u7528\u4e86\u90a3\u4e9b\u51fd\u6570\u3002\u5f53\u7136\uff0c\u5728\u672c\u5b9e\u4f8b\u4e2d\uff0c\u53ef\u4ee5\u770b\u5230\u6a21\u5757\u8c03\u7528\u4e86func_D\u540e\u5c31\u51fa\u9519\u4e86\uff0c\u663e\u7136\u9519\u8bef\u5c31\u5728func_D\u4e2d\u4e86\u3002<\/p>\n

          \u7ed3\u5c3e\u90e8\u5206\u8fd8\u6709\u4e00\u70b9\u4fe1\u606f\u8bf7\u6ce8\u610f\u3002<\/p>\n

            \n
          1. Code:\u00a0e59f0010\u00a0eb412fb6\u00a0e3a0200b\u00a0e3a03000\u00a0\uff08e5832000\uff09<\/li>\n<\/ol>\n

            Code\u6807\u53f7\u5f00\u59cb\u7684\u5b57\u6bb5\u8bb0\u5f55\u4e86\u6a21\u5757\u51fa\u9519\u524d\u6700\u540e\u51e0\u6761\u673a\u5668\u7801\uff0c\u5176\u4e2d\u88ab\u62ec\u53f7\u62ec\u8d77\u6765\u7684\u5c31\u662foops\u51fa\u9519\u5bf9\u5e94\u7684\u673a\u5668\u7801\u3002<\/p>\n

            \uff084\uff09\u6839\u636e\u4e0a\u9762\u7684\u5206\u6790\uff0c\u53ef\u4ee5\u4f7f\u7528\u53cd\u6c47\u7f16\u6765\u786e\u5b9a\u51fa\u9519\u7684\u4f4d\u7f6e\u3002\u5728RHEL5\u4e2d\uff0c\u4f7f\u7528\u547d\u4ee4\uff1aarm-linux-objdump -D -S oops.ko >log\uff0c\u5c06\u6a21\u5757\u6587\u4ef6\u53cd\u6c47\u7f16\u5230log\u4e2d\uff0c\u4f7f\u7528vim\u6253\u5f00\u8be5\u6587\u4ef6log\uff0c\u76f4\u63a5\u627e\u5230func_D\u6807\u53f7\u5904\uff0c\u5982\u56fe6-17\u6240\u793a\u3002<\/p>\n\n\n\n\n
            \"\"<\/a><\/td>\n<\/tr>\n
            \uff08\u70b9\u51fb\u67e5\u770b\u5927\u56fe\uff09\u56fe6-17\u00a0 \u53cd\u6c47\u7f16\u7ed3\u679c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            \u6839\u636e\u524d\u9762\u7684\u4fe1\u606f\uff0c\u51fa\u9519\u4f4d\u7f6e\u5e94\u8be5\u5728func_D+0x1c\u5904\uff0cfunc_D\u57280x1c\uff0c\u6240\u4ee5\u51fa\u9519\u5730\u5740\u5e94\u8be5\u662f0x38\u3002\u770b\u770b\u8fd9\u53e5\u6c47\u7f16\u4ee3\u7801\uff0c\u524d\u9762\u7684\u8bed\u53e5\u5c06 \u5bc4\u5b58\u5668r3\u8d4b\u503c\u4e3a0\uff0c\u7136\u540e\u8fd9\u53e5\u53c8\u8bd5\u56fe\u5c06\u5bc4\u5b58\u5668r2\u7684\u503c\u5b58\u5165\u5230r3\u6307\u5411\u7684\u5730\u5740\u5904\uff0c\u4e5f\u5c31\u662f\u54110\u5730\u5740\u5199\u3002\u56e0\u6b64\u51fa\u9519\u3002\u518d\u6765\u770b\u770b\u8fd9\u53e5\u51fa\u9519\u4ee3\u7801\u5bf9\u5e94\u7684\u673a\u5668\u7801 e5832000\uff0c\u663e\u7136\u5c31\u662f\u4e4b\u524d\u5728opps\u7684Code\u5b57\u6bb5\u4e2d\u770b\u5230\u7684\u88ab\u62ec\u8d77\u6765\u7684\u90a3\u4e2a\u3002<\/p>\n

            \uff085\uff09\u901a\u8fc7\u53cd\u6c47\u7f16\u7a0b\u5e8f\uff0c\u5b9a\u4f4d\u4e86\u6c47\u7f16\u4ee3\u7801\u4e2d\u7684\u9519\u8bef\u4f4d\u7f6e\uff0c\u4f46\u5bf9\u4e8e\u7528C\u8bed\u8a00\u7f16\u5199\u7684\u5185\u6838\u6a21\u5757\u800c\u8a00\uff0c\u8fd9\u6837\u8fd8\u4e0d\u591f\u3002\u5982\u4f55\u624d\u80fd\u51c6\u786e\u5730\u5b9a\u4f4d\u5230C\u8bed\u8a00\u4e2d\u7684\u8bed\u53e5\u5462\uff1f\u56de\u5fc6 \u4e00\u4e0b\u5728<<Linux\u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u73ed>>\u4e2d\u5b66\u4e60gdb\u8c03\u8bd5\u65f6\uff0c\u80fd\u591f\u5728\u8c03\u8bd5\u4e2d\u770b\u5230\u5bf9\u5e94\u7684\u6e90\u7801\u3002\u5f53\u65f6\u4e3a\u4e86\u8fdb\u884cgdb\u8c03\u8bd5\uff0c\u5728\u7f16\u8bd1\u65f6\u52a0 \u5165\u4e86-g\u9009\u9879\uff0c\u8fd9\u6837\u53ef\u4ee5\u5c06\u8c03\u8bd5\u4fe1\u606f\u52a0\u5165\u5230\u76ee\u6807\u6587\u4ef6\u4e2d\u3002\u7531\u6b64\u5f97\u5230\u7075\u611f\uff0c\u5728\u8fd9\u91cc\u4e5f\u52a0\u5165-g\u8bd5\u8bd5\u3002\u8fdb\u5165\u5b9e\u9a8c\u4ee3\u7801\u76ee\u5f552-3-1\u4e2d\u7684\u5185\u6838\u6e90\u7801\u76ee\u5f55\uff0c\u4fee\u6539\u5176\u9876\u5c42 Makefile\uff0c\u5982\u56fe6-18\u6240\u793a\u3002<\/p>\n\n\n\n\n
            \"\"<\/a><\/td>\n<\/tr>\n
            \uff08\u70b9\u51fb\u67e5\u770b\u5927\u56fe\uff09\u56fe6-18\u00a0 \u5185\u6838\u8c03\u8bd5\u4fe1\u606f\u5f00\u5173<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            \u63d0\u793a\u00a0\u53ef\u89c1\u7f16\u8bd1\u6a21\u5757\u65f6\u52a0\u5165\u8c03\u8bd5\u4fe1\u606f\uff0c\u9700\u8981\u5b9a\u4e49CONFIG_DEBUG_INFO\u8fd9\u4e2a\u5b8f\uff0c\u7531\u4e8e\u5b83\u9ed8\u8ba4\u662f\u5173\u95ed\u7684\uff0c\u6240\u4ee5\u5185\u6838\u5e76\u6ca1\u6709\u542f\u7528-g\u9009\u9879\uff0c\u53ef\u4ee5\u6682\u65f6\u628a\u8fd9\u4e2a\u5b8f\u5f00\u5173\u6ce8\u91ca\u6389\uff0c\u4f7fKBUILD_CFLAGS\u6807\u8bc6\u62e5\u6709-g\u9009\u9879\u3002<\/p>\n

            \uff086\uff09\u4fee\u6539\u5185\u6838Makefile\u540e\uff0c\u518d\u6b21\u7f16\u8bd1\u6a21\u5757\u3002\u7136\u540e\u5c06\u65b0\u5f97\u5230\u7684oops.ko\u53cd\u6c47\u7f16\uff0c\u4f7f\u7528\u547d\u4ee4\uff1aarm-linux-objdump -D -S oops.ko >log\u3002\u7528vim\u6253\u5f00log\u6587\u4ef6\u3002\u8fd9\u65f6\uff0c\u901a\u8fc7\u6c47\u7f16\u6df7\u5408C\u8bed\u8a00\u8c03\u8bd5\u4fe1\u606f\u7684\u7ed3\u679c\uff0c\u7ed3\u5408\u524d\u9762\u7684\u5206\u6790\uff0c\u53ef\u4ee5\u5f88\u8f7b\u677e\u7684\u5b9a\u4f4d\u5230C\u8bed\u8a00\u7684\u9519\u8bef\u8bed\u53e5\u5c31\u51fa\u73b0\u5728”*p = a + 5″\u5904\uff0c\u5982\u56fe6-19\u6240\u793a\u3002<\/p>\n\n\n\n\n
            \"\"<\/a><\/td>\n<\/tr>\n
            \uff08\u70b9\u51fb\u67e5\u770b\u5927\u56fe\uff09\u56fe6-19\u00a0 \u5b9a\u4f4d\u51fa\u9519\u7684C\u8bed\u8a00\u8bed\u53e5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            5\uff0e\u603b\u7ed3<\/strong><\/p>\n

            \u901a\u8fc7\u672c\u8282\u5b9e\u9a8c\uff0c\u53ef\u4ee5\u5b66\u4f1aoops\u4fe1\u606f\u7684\u5206\u6790\u65b9\u6cd5\uff0c\u638c\u63e1\u5229\u7528oops\u4fe1\u606f\u8c03\u8bd5\u5185\u6838\u6a21\u5757\u7684\u57fa\u672c\u65b9\u6cd5\u3002\u4e0b\u9762\u5217\u51fa\u5229\u7528oops\u5b9a\u4f4d\u51fa\u9519\u70b9\u7684\u57fa\u672c\u6b65\u9aa4\u3002<\/p>\n

            \uff081\uff09oops\u51fa\u9519\u65f6\uff0c\u9996\u5148\u641c\u96c6\u5230\u6240\u6709oops\u6253\u5370\u4fe1\u606f\uff0c\u5982\u679c\u6a21\u5757\u4e2d\u672c\u8eab\u6709\u5f88\u591aprintk\u6253\u5370\u8bed\u53e5\uff0c\u9996\u5148\u6839\u636eoops\u5f00\u5934\u7684\u6253\u5370\u4fe1\u606f\u5206\u6790\u51fa\u9519\u70b9\u7684\u5927\u6982\u4f4d\u7f6e\u3002<\/p>\n

            \uff082\uff09\u901a\u8fc7Backtrace\u5b57\u6bb5\uff0c\u5206\u6790\u53d1\u751foops\u9519\u8bef\u524d\u6a21\u5757\u7a0b\u5e8f\u7684\u6267\u884c\u8def\u5f84\uff0c\u5c06\u8303\u56f4\u7f29\u5c0f\u5230\u67d0\u4e2a\u51fd\u6570\u4e2d\u3002<\/p>\n

            \uff083\uff09\u5982\u679c\u901a\u8fc7\u524d\u9762\u4e24\u6b65\u4ecd\u65e0\u6cd5\u5b9a\u4f4d\u51fa\u9519\u70b9\uff0c\u90a3\u4e48\u5c31\u76f4\u63a5\u901a\u8fc7PC\u6765\u5b9a\u4f4d\u3002\u67e5\u770b\u51fa\u9519\u65f6<\/p>\n

            oops\u4fe1\u606f\u4e2d\u6253\u5370\u51fa\u7684PC\u7684\u503c\u5e76\u8bb0\u5f55\u4e0b\u6765\u3002\u5728\u5185\u6838Makefile\u4e2d\u52a0\u5165-g\u9009\u9879\uff0c\u91cd\u65b0\u7f16\u8bd1\u6a21\u5757\u3002<\/p>\n

            \uff084\uff09\u901a\u8fc7objdump\u53cd\u6c47\u7f16\u8be5\u6a21\u5757\u3002\u5728\u53cd\u6c47\u7f16\u5f97\u51fa\u7684\u6c47\u7f16\u6df7\u5408C\u8bed\u8a00\u8c03\u8bd5\u4fe1\u606f\u7684\u4ee3\u7801\u4e2d\uff0c\u7ed3\u5408\u524d3\u6b65\u7684\u5206\u6790\u7ed3\u8bba\uff0c\u7cbe\u786e\u5b9a\u4f4d\u51fa\u9519\u70b9\u7684\u4f4d\u7f6e\u3002<\/p>\n

             <\/p>\n

             <\/p>\n","protected":false},"excerpt":{"rendered":"

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