{"id":5023,"date":"2021-01-31T20:16:44","date_gmt":"2021-01-31T12:16:44","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=5023"},"modified":"2021-01-31T20:16:44","modified_gmt":"2021-01-31T12:16:44","slug":"gdb%e5%88%86%e6%9e%90%e5%a0%86%e6%a0%88%e7%a0%b4%e5%9d%8f%e5%ae%9e%e4%be%8b","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/5023","title":{"rendered":"gdb\u5206\u6790\u5806\u6808\u7834\u574f\u5b9e\u4f8b"},"content":{"rendered":"
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\u539f\u6587\u5730\u5740<\/a><\/p>\n

 <\/p>\n<\/div>\n

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\"\"<\/p>\n
mergerly<\/a>\u00a02018-05-31 14:23:57<\/span>\u00a0\"\"\u00a03769<\/span>\u00a0<\/a>\"\"\u00a0\u6536\u85cf<\/span>\u00a03<\/span><\/div>\n<\/div>\n
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\u5206\u7c7b\u4e13\u680f\uff1a<\/span>\u00a0\u9006\u5411\u8c03\u8bd5<\/a><\/div>\n<\/div>\n
\u7248\u6743<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\u4e00\u3001\u5b9a\u4f4dbug\u6027\u8d28\u548c\u8303\u56f4<\/h4>\n

1\u3001\u5e26\u7b26\u53f7\u5206\u6790dump<\/p>\n

$ gdb IMActivityServer.symbol core.32530<\/span>\r\n(gdb) bt\r\n#0  0x0000000000a6951a in ?? ()<\/span>\r\n#1  0x00000000018c6db8 in ?? ()<\/span>\r\n#2  0x8f127f1911ab2800 in ?? ()<\/span>\r\n#3  0x00000000018c6d00 in ?? ()<\/span>\r\n#4  0x0000000400000004 in ?? ()<\/span>\r\n#5  0x00000000018c6d88 in ?? ()<\/span>\r\n#6  0x00000000006ba9bf in ?? ()<\/span>\r\n#7  0x00000000018a4400 in ?? ()<\/span>\r\n#8  0x8f127f1911ab2800 in ?? ()<\/span>\r\n#9  0x00000000018c6d00 in ?? ()<\/span>\r\n#10 0x00007f518b789010 in ?? ()<\/span>\r\n#11 0x00000000018c6d00 in ?? ()<\/span>\r\n#12 0x0000000000693166 in ?? ()<\/span>\r\n#13 0x0000000000000000 in ?? ()<\/span><\/code><\/pre>\n
\u770b\u4e0d\u51fa\u4efb\u4f55\u4fe1\u606f\uff0c\u65e5\u5fd7\u4e5f\u770b\u4e0d\u51fa\u4ec0\u4e48\uff0c\u6000\u7591\u662f\u5806\u6808\u7834\u574f<\/p>\n
2\u3001\u589e\u52a0\u5806\u6808\u4fdd\u62a4, \u7528\u7f16\u8bd1\u53c2\u6570-fstack-protector-all<\/code>\u4e3a\u6240\u6709\u51fd\u6570\u63d2\u5165\u4fdd\u62a4\u4ee3\u7801\uff0c\u7f16\u8bd1\u7248\u672c\uff0c\u518d\u6b21\u5e26\u7b26\u53f7\u67e5\u770b\u5d29\u6e83dump<\/p>\n
$ gdb IMActivityServer.symbol core.32530<\/span>\r\n(gdb) bt\r\n#0<\/span>  0<\/span>x00007f08a95d7118 in<\/span> ?? () from<\/span> \/lib64\/libgcc_s.so.1<\/span>\r\n#1<\/span>  0<\/span>x00007f08a95d8019 in<\/span> _Unwind_Backtrace () from<\/span> \/lib64\/libgcc_s.so.1<\/span>\r\n#2<\/span>  0<\/span>x00007f08a93110c6 in<\/span> backtrace () from<\/span> \/lib64\/libc.so.6<\/span>\r\n#3<\/span>  0<\/span>x00007f08a927c334 in<\/span> __libc_message () from<\/span> \/lib64\/libc.so.6<\/span>\r\n#4<\/span>  0<\/span>x00007f08a9314a77 in<\/span> __fortify_fail () from<\/span> \/lib64\/libc.so.6<\/span>\r\n#5<\/span>  0<\/span>x00007f08a9314a40 in<\/span> __stack_chk_fail () from<\/span> \/lib64\/libc.so.6<\/span>\r\n#6<\/span>  0<\/span>x00000000006909a9 in<\/span> ActivityService::cmdMsgParse (this=<optimized out<\/span>>, ptNullCmd=<optimized out<\/span>>, \r\n    nCmdLen=<optimized out<\/span>>) at ActivityServer.cpp:930<\/span>\r\n#7<\/span>  0<\/span>x00007f08a75ae1e8 in<\/span> ?? ()\r\n#8<\/span>  0<\/span>x00007f0818000978 in<\/span> ?? ()\r\n#9<\/span>  0<\/span>x00007f0818000a08 in<\/span> ?? ()\r\n#10<\/span> 0<\/span>x00007f0818000970 in<\/span> ?? ()\r\n#11<\/span> 0<\/span>x0000000000000000 in<\/span> ?? ()<\/code><\/pre>\n
\u5806\u6808\u53ef\u4ee5\u770b\u51fa\u51fd\u6570\u540d\u4e86cmdMsgParse\uff0c\u67e5\u770b\u6e90\u7801\u6587\u4ef6ActivityServer.cpp:930\u662f\u51fd\u6570\u8fd4\u56de\u5730\u5740\uff0c\u65ad\u5b9a\u662f\u67d0\u4e00\u4e2a\u6d88\u606f\u5f15\u8d77\u7684\u5806\u6808\u7834\u574f\uff0c\u8fd9\u4e2a\u662f\u7edf\u4e00\u6d88\u606f\u5904\u7406\u51fd\u6570\uff0c\u6d88\u606f\u91cf\u5f88\u5927\uff0c<\/p>\n
3\u3001\u589e\u52a0\u6d88\u606f\u53f7\u5904\u7406\u65e5\u5fd7\uff0c\u518d\u653e\u4e00\u4e2a\u7248\u672c
\n\u591a\u53f0\u670d\u52a1\u5668\u7684\u65e5\u5fd7\u6700\u540e\u4e00\u884c\u90fd\u662f\uff1a<\/p>\n
180531-12<\/span>:43<\/span>:51<\/span> ActivityServer<\/span>[17701]<\/span> ERROR<\/span>: [ActivityInfoManager.cpp:1293]<\/span> cmd<\/span>(51) param<\/span>(0) len<\/span>(70) server<\/span>(0) id<\/span>(0)<\/code><\/pre>\n
\u57fa\u672c\u53ef\u4ee5\u5224\u65ad\u662f51\u53f7\u6d88\u606f\u5f15\u8d77\u7684<\/p>\n
\u4e8c\u3001\u8be6\u7ec6\u5206\u6790bug<\/h4>\n
51\u53f7\u6d88\u606f\u662f\u4e00\u4e2a\u901a\u7528\u8f6c\u53d1\u5305\u88c5\u6d88\u606f\uff0c\u9700\u8981\u89e3\u6790\u5185\u90e8\u6d88\u606f\u5185\u5bb9,\u8003\u8651\u4e0b\u65ad\u70b9\u7edf\u4e00\u5904\u7406\u51fd\u6570
\nActivityInfoManager::msgParseTask<\/code><\/p>\n
1\u3001\u5148\u627e\u5230\u51fd\u6570\u5b9a\u4e49\uff0c\u770b\u662f\u5426\u6b63\u786e\uff0c\u6709\u6e90\u7801\u53ef\u4ee5\u7701\u7565<\/p>\n
(gdb) info func ActivityInfoManager::msgParseTask\r\nAll functions matching regular expression \"ActivityInfoManager::msgParseTask\"<\/span>:\r\n\r\nFile ActivityInfoManager.cpp<\/span>:\r\nbool<\/span> ActivityInfoManager::msgParseTask(Cmd::t_NullCmd const<\/span>*, unsigned<\/span> int<\/span>, void<\/span> const<\/span>*);\r\nbool<\/span> ActivityInfoManager::msgParseTask(unsigned<\/span> int<\/span>, Cmd::t_NullCmd const<\/span>*, unsigned<\/span> int<\/span>, void<\/span> const<\/span>*);\r\nbool<\/span> ActivityInfoManager::msgParseTaskByWebTransfer(Cmd::t_NullCmd const<\/span>*, unsigned<\/span> int<\/span>, void<\/span> const<\/span>*);\r\nbool<\/span> ActivityInfoManager::msgParseTaskGM(Cmd::t_NullCmd const<\/span>*, unsigned<\/span> int<\/span>, unsigned<\/span> int<\/span>);<\/code><\/pre>\n
2\u3001\u518d\u65ad\u4e0b\u6765\u89e3\u6790\u53c2\u6570<\/p>\n
(gdb) break<\/span> ActivityInfoManager.cpp:1293<\/span>\r\n(gdb) c\r\nContinuing.\r\n[Switching to Thread 0<\/span>x7f83877fe700 (LWP 414<\/span>)]\r\n\r\nBreakpoint 1<\/span>, ActivityInfoManager::msgParseTask (this=0<\/span>x7f840c16e010, ptNullCmd=0<\/span>x7f83877edc30, cmdLen=84<\/span>, \r\n    server_param=0<\/span>x7f83877edc20) at ActivityInfoManager.cpp:1293<\/span>\r\n1293<\/span>    ActivityInfoManager.cpp: \u6ca1\u6709\u90a3\u4e2a\u6587\u4ef6\u6216\u76ee\u5f55.\r\n(gdb) info locals\r\n__temp_format__ = <error reading variable __temp_format__ (can't compute CFA for this frame)>\r\ns = 0x7f83877edc20\r\nbuffercmd = <error reading variable buffercmd (can'<\/span>t compute CFA for<\/span> this frame)>\r\ncmd = <optimized out>\r\npBase = <optimized out>\r\n\/\/ \u67e5\u770bptNullCmd\u7684\u7ed3\u6784\u4f53\u5b9a\u4e49,\u6709\u6e90\u7801\u53ef\u4ee5\u7701\u7565<\/span>\r\n(gdb) info types Cmd::t_NullCmd\r\nAll types matching regular expression \"Cmd::t_NullCmd\"<\/span>:\r\n\r\nFile ..\/..\/common\/zNullCmd.h:\r\nCmd::t_NullCmd;\r\nCmd::t_NullCmd;\r\nCmd::t_NullCmd;\r\nCmd::t_NullCmd;\r\nCmd::t_NullCmd;\r\n\r\n\/\/ \u663e\u793a\u7ed3\u6784\u4f53\u7684\u5185\u5bb9,\u6709\u6e90\u7801\u53ef\u4ee5\u7701\u7565<\/span>\r\n(gdb) ptype Cmd::t_NullCmd  \r\ntype<\/span> = class Cmd::t_NullCmd {  \r\n  public:  \r\n    union {  \r\n        <no data fields>  \r\n    };  \r\n\r\n    void t_NullCmd(BYTE, BYTE);  \r\n}  \r\n\r\n\/\/ \u663e\u793a\u53c2\u6570\u8be6\u7ec6\u5185\u5bb9<\/span>\r\n(gdb) p *(const<\/span> Cmd::t_NullCmd *) 0<\/span>x7f83877edc30\r\n$11<\/span> = {{{byCmd = 51<\/span> '3'<\/span>, byParam = 0<\/span> '\\000'<\/span>}, {cmd = 51<\/span> '3'<\/span>, para = 0<\/span> '\\000'<\/span>}}}\r\n(gdb) p *(Cmd::Activity::stServerParam*)0<\/span>x7f83877fdc10\r\n$6<\/span> = {asServer = 0<\/span> '\\000'<\/span>, type<\/span> = 0<\/span>, serverid = 0<\/span>}\r\n\r\n\/\/ \u67e5\u770b\u6d88\u606f\u503c<\/span>\r\n(gdb) p ptNullCmd->cmd\r\n$2<\/span> = 33<\/span> '!'<\/span><\/code><\/pre>\n
3\u3001\u6839\u636e\u53c2\u6570\u503c\u4e0b\u6761\u4ef6\u65ad\u70b9<\/p>\n
\/\/ \u6e05\u9664\u8001\u65ad\u70b9\r\n(gdb) clear<\/span>\r\nDeleted breakpoint<\/span> 1<\/span> \r\n\/\/ \u4e0b\u6761\u4ef6\u65ad\u70b9<\/span>\r\n(gdb) break ActivityInfoManager.cpp:1293<\/span> if<\/span> ptNullCmd->cmd == 51<\/span>\r\nBreakpoint 2<\/span> at<\/span> 0x6bdd50<\/span>: file<\/span> ActivityInfoManager.cpp, line<\/span> 1293.<\/span>\r\n(gdb) c\r\nContinuing.<\/code><\/pre>\n
4\u3001\u5206\u679051\u53f7\u6d88\u606f<\/p>\n
\/\/ \u67e5\u770b\u65ad\u4e0b\u6765\u7684\u6d88\u606f<\/span>\r\n(gdb) p *(const<\/span> Cmd::t_NullCmd *) 0x7f83877fdc30<\/span>\r\n$11<\/span> = {{{byCmd = 51<\/span> '3'<\/span>, byParam = 0<\/span> '\\000'<\/span>}, {cmd = 51<\/span> '3'<\/span>, para = 0<\/span> '\\000'<\/span>}}}\r\n\r\n\/\/ 51\u53f7\u6d88\u606f\u7ed3\u6784\u7b49\u4ef7\u4e8e<\/span>\r\nstruct<\/span> stActivityInCmd{\r\n    BYTE cmd;\r\n    BYTE para;\r\n    DWORD ActId;\r\n    WORD size;\r\n    char<\/span> data[0<\/span>]\r\n}\r\n\/\/ \u6d88\u606f\u5728\u5185\u90e8data\u4e2d\uff0c\u53ef\u4ee5\u77e5\u9053data\u662fstActivityInCmd\u7ed3\u6784\u4f53\u5730\u5740+8\u5b57\u8282,\u5934\u4e5f\u662fCmd::t_NullCmd\u7ed3\u6784\u4f53<\/span>\r\n(gdb) p *(const<\/span> Cmd::t_NullCmd *) 0x7f83877fdc30<\/span>+8<\/span>\r\n$11<\/span> = {{{byCmd = 51<\/span> '3'<\/span>, byParam = 12<\/span> '\\f'<\/span>}, {cmd = 51<\/span> '3'<\/span>, para = 12<\/span> '\\f'<\/span>}}}\r\n\/\/ \u53ef\u4ee5\u770b\u51fa\u662f51\u53f7\u6d88\u606f\uff0c\u5b50\u6d88\u606f\u53f7\u662f12\uff0c\u67e5\u6e90\u7801\u77e5\u9053\u6d88\u606f\u662f'Cmd::Activity::stOpMount'<\/span>\r\n\/\/ \u663e\u793a\u8be6\u7ec6\u7ed3\u6784\u5185\u5bb9<\/span>\r\n(gdb) p *(Cmd::Activity::stOpMount*)0x7f83877fdc38<\/span>\r\n$10<\/span> = {<Cmd::t_NullCmd> = {{{byCmd = 51<\/span> '3'<\/span>, byParam = 12<\/span> '\\f'<\/span>}, {cmd = 51<\/span> '3'<\/span>, para = 12<\/span> '\\f'<\/span>}}}, dwReqFunction = 10<\/span>, \r\n  szName = \"\u9886\u5de5\u8d44\\000sigin_pay_map_.size:[%d]\\000\"<\/span>, byOpType = 1<\/span> '\\001'<\/span>, dwIndex = 0<\/span>, dwUserId = 22684283<\/span>, wAddType = 32<\/span>, \r\n  dwTimeStart = 1527740441<\/span>, dwTimeEnd = 1528345241<\/span>, bNeedDelMount = false<\/span>, wDelType = 0<\/span>, bExtension = true<\/span>}<\/code><\/pre>\n
\u67e5\u770b\u6d88\u606fCmd::Activity::stOpMount<\/code>\u7684\u5904\u7406\u6d41\u7a0b\uff0c\u53d1\u73b0\u4e00\u5904\u5806\u6808\u8986\u76d6\u95ee\u9898<\/p>\n
Cmd::Activity::stActivityInCmd cmd;\r\n...<\/span>\r\nbcopy(rev->data, cmd.data, rev->size);\r\n...<\/span><\/code><\/pre>\n
\u6d88\u606f\u6ca1\u6709\u521d\u59cb\u5316\u5c31\u4f7f\u7528\u4e86\uff0c\u76f4\u63a5\u5f80data\u91cc\u9762\u5199\u6570\u636e\uff0c\u53c2\u8003\u4e0a\u9762\u7684\u7ed3\u6784\u4f53\u5b9a\u4e49\uff0cdata\u6307\u5411\u7684\u662f\u7ed3\u6784\u4f53\u5806\u6808\u672b\u5c3e\uff0c\u5bfc\u81f4\u6570\u636e\u76f4\u63a5\u5199\u5165\u4e86\u5806\u6808\u4e2d\uff0c\u8986\u76d6\u4e86\u539f\u6709\u5806\u6808\u5185\u5bb9\u3002<\/p>\n
\u4e09\u3001\u4fee\u590dbug<\/h4>\n
\u4fee\u590d\u7684\u65b9\u6cd5\u5f88\u7b80\u5355\uff0c\u521d\u59cb\u5316\u4e00\u4e0b\u7ed3\u6784\u4f53\u518d\u4f7f\u7528\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n
\u56db\u3001gdb\u6253\u5370\u65e5\u5fd7<\/h4>\n
$ gdb attach 28644<\/span>\r\n\/\/ \u52a0\u8f7d\u7b26\u53f7<\/span>\r\n(gdb) symbol-file<\/span> IMActivityServer.<\/span>symbol \r\nReading symbols from \/home\/ztgame\/IMTESTVERSION\/release\/IMActivityServer.<\/span>symbol...<\/span>done.<\/span>\r\n\/\/ \u5f00\u542f\u65e5\u5fd7<\/span>\r\n(gdb) set<\/span> logging on<\/span>\r\nFuture logs will be written to<\/span> gdb.<\/span>txt.<\/span>\r\nCopying output to<\/span> gdb.<\/span>txt.<\/span>\r\n\/\/ \u4e0b\u65ad\u70b9<\/span>\r\n(gdb) break ActivityInfoManager.<\/span>cpp:1290<\/span>\r\nBreakpoint 2<\/span> at 0x6b70f0<\/span>: file ActivityInfoManager.<\/span>cpp, line 1290.<\/span>\r\n\/\/ \u5bfc\u5165python\u5e93<\/span>\r\n(gdb) python import<\/span> datetime\r\n\/\/ \u589e\u52a0\u65ad\u70b9\u811a\u672c\u547d\u4ee4<\/span>\r\n(gdb) commands 2<\/span>    \/\/\u6307\u4ee4\u96c6\u8bbe\u7f6e\u547d\u4ee4,\u65ad\u70b9\u5e8f\u53f7<\/span>\r\nType<\/span> commands for breakpoint(s) 2<\/span>, one per line.<\/span>\r\nEnd with<\/span> a line saying just \"end\"<\/span>.<\/span>\r\n><\/span>silent         \/\/\u65ad\u70b9\u89e6\u53d1\u65f6\u4e0d\u6253\u5370\u65ad\u70b9\u4fe1\u606f<\/span>\r\n><\/span>python gdb.<\/span>execute(\"set $now=\\\"\"<\/span> +<\/span> datetime.<\/span>datetime.<\/span>now().<\/span>strftime('%Y-%m-%d %H:%M:%S'<\/span>) +<\/span> \"\\\"\"<\/span>)\r\n><\/span>printf \"%s cmd(%u) param(%u) len(%u) srvtype(%u) srvid(%u)\\n\"<\/span>,$now<\/span>,ptNullCmd-><\/span>cmd, ptNullCmd-><\/span>para,cmdLen,((Cmd::Activity<\/span>::stServerParam<\/span>*<\/span>)server_param)-><\/span>type<\/span>,((Cmd::Activity<\/span>::stServerParam<\/span>*<\/span>)server_param)-><\/span>serverid\r\n><\/span>continue\r\n><\/span>end    \/\/\u6307\u4ee4\u96c6\u8bbe\u7f6e\u7ed3\u675f\u65f6\u5fc5\u987b\u7528end\u7ed3\u675f<\/span>\r\n(gdb) c<\/code><\/pre>\n
\u6253\u5f00gdb.txt<\/p>\n
2018-05-31<\/span> 19:45<\/span>:45<\/span> cmd<\/span>(17) param<\/span>(1) len<\/span>(38) srvtype<\/span>(43) srvid<\/span>(4301)\r\n2018-05-31<\/span> 19:45<\/span>:45<\/span> cmd<\/span>(17) param<\/span>(1) len<\/span>(49) srvtype<\/span>(43) srvid<\/span>(4301)\r\n2018-05-31<\/span> 19:45<\/span>:45<\/span> cmd<\/span>(17) param<\/span>(1) len<\/span>(49) srvtype<\/span>(43) srvid<\/span>(4301)\r\n2018-05-31<\/span> 19:45<\/span>:45<\/span> cmd<\/span>(17) param<\/span>(1) len<\/span>(38) srvtype<\/span>(43) srvid<\/span>(4301)\r\n2018-05-31<\/span> 19:45<\/span>:45<\/span> cmd<\/span>(17) param<\/span>(1) len<\/span>(38) srvtype<\/span>(43) srvid<\/span>(4301)\r\n2018-05-31<\/span> 19:45<\/span>:46<\/span> cmd<\/span>(22) param<\/span>(14) len<\/span>(54) srvtype<\/span>(150) srvid<\/span>(15000)<\/code><\/pre>\n<\/div>\n<\/div>\n<\/article>\n<\/div>\n
<\/span><\/p>\n
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    \n
  • <\/li>\n<\/ul>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
    \u539f\u6587\u5730\u5740   mergerly<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[117],"class_list":["post-5023","post","type-post","status-publish","format-standard","hentry","tag-01-linux"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/5023","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=5023"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/5023\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=5023"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=5023"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=5023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}