{"id":116371,"date":"2024-06-05T21:39:49","date_gmt":"2024-06-05T19:39:49","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/google-opublikoval-gwpsan-instrument-dlya-vyyavleniya-oshibok-na-stadii-vypolneniya-prilozhenij"},"modified":"2024-06-05T21:39:49","modified_gmt":"2024-06-05T19:39:49","slug":"google-opublikoval-gwpsan-instrument-dlya-vyyavleniya-oshibok-na-stadii-vypolneniya-prilozhenij","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/google-opublikoval-gwpsan-instrument-dlya-vyyavleniya-oshibok-na-stadii-vypolneniya-prilozhenij","title":{"rendered":"Google zve\u0159ejnil GWPSan, n\u00e1stroj pro detekci chyb b\u011bhem b\u011bhu aplikac\u00ed","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Spole\u010dnost Google zve\u0159ejnila zdrojov\u00e9 k\u00f3dy n\u00e1stroje GWPSan, ur\u010den\u00e9ho k odhalov\u00e1n\u00ed chyb b\u011bhem b\u011bhu aplikac\u00ed sestaven\u00fdch pro architektury x86-64 a ARM64. GWPSan je vytvo\u0159en jako sd\u00edlen\u00e1 knihovna, kter\u00e1 se p\u0159i spu\u0161t\u011bn\u00ed aplikace propojuje pomoc\u00ed LD_PRELOAD a vyu\u017e\u00edv\u00e1 k anal\u00fdze v\u00fdkonu programu mechanismy zastaven\u00ed (PERF_TYPE_BREAKPOINT) a vzorkov\u00e1n\u00ed proces\u016f dostupn\u00e9 v j\u00e1d\u0159e Linux. K\u00f3d je naps\u00e1n v jazyce C++ a \u0161\u00ed\u0159\u00ed se pod licenc\u00ed Apache 2.0.      <\/p>\n<p>GWPSan je navr\u017een jako modul\u00e1rn\u00ed framework, kter\u00fd podporuje p\u0159ipojen\u00ed modul\u016f s implementac\u00ed detektor\u016f r\u016fzn\u00fdch t\u0159\u00edd chyb. GWPSan prov\u00e1d\u00ed dynamickou anal\u00fdzu aktivovanou prost\u0159ednictv\u00edm obslu\u017en\u00fdch rutin sign\u00e1l\u016f, co\u017e umo\u017e\u0148uje obej\u00edt se bez zm\u011bny spustiteln\u00e9ho k\u00f3du aplikace. Pro efektivn\u00ed fungov\u00e1n\u00ed v\u011bt\u0161iny detektor\u016f je t\u0159eba aplikaci sestavit s ur\u010dit\u00fdmi kompil\u00e1torov\u00fdmi p\u0159\u00edznaky, kter\u00e9 p\u0159id\u00e1vaj\u00ed nezbytn\u00e1 meta data. Pro jeho pou\u017eit\u00ed je alespo\u0148 vy\u017eadov\u00e1n Clang 18 a j\u00e1dro Linux 6.4.    <\/p>\n<p>V sou\u010dasnosti jsou dostupn\u00e9 t\u0159i detektory:  <\/p>\n<ul>\n<li class=\"l\"> UAR (Use-after-return) \u2014 odhaluje chyby, kter\u00e9 jsou zp\u016fsobeny pou\u017eit\u00edm objektu na z\u00e1sobn\u00edku po opu\u0161t\u011bn\u00ed funkce, ve kter\u00e9 byl tento objekt definov\u00e1n. Ochrana je organizov\u00e1na prost\u0159ednictv\u00edm zachycov\u00e1n\u00ed vstupn\u00edch a v\u00fdstupn\u00edch bod\u016f funkce \u2014 p\u0159i vstupu se z\u00e1sobn\u00edk nahrazuje kopi\u00ed, kter\u00e1 se pou\u017e\u00edv\u00e1 b\u011bhem prov\u00e1d\u011bn\u00ed funkce, a p\u0159i v\u00fdstupu se vrac\u00ed star\u00fd stav z\u00e1sobn\u00edku.\n<li class=\"l\"> TSan (Thread Sanitizer) \u2014 ur\u010duje podm\u00ednky z\u00e1vodu mezi vl\u00e1kny (Data-race), kter\u00e9 nast\u00e1vaj\u00ed, kdy\u017e r\u016fzn\u00e1 sou\u010dasn\u011b prov\u00e1d\u011bn\u00e1 vl\u00e1kna mohou \u010d\u00edst nebo m\u011bnit sd\u00edlen\u00e9 oblasti pam\u011bti, ani\u017e by p\u0159i tom pou\u017e\u00edvala primitivy pro synchronizaci pr\u00e1ce. Ochrana je postavena na pou\u017e\u00edv\u00e1n\u00ed hardwarov\u00fdch bod\u016f zastaven\u00ed, kter\u00e9 jsou v\u00e1z\u00e1ny na sd\u00edlen\u00e9 oblasti pam\u011bti. Aktivovan\u00fd obslu\u017en\u00fd program na kr\u00e1tkou dobu pozastav\u00ed vykon\u00e1v\u00e1n\u00ed vl\u00e1kna p\u0159i p\u0159\u00edstupu k pam\u011bti a b\u011bhem tohoto pozastaven\u00ed kontroluje, zda nedo\u0161lo k aktivaci bodu zastaven\u00ed pro jin\u00e9 vl\u00e1kno.\n<li class=\"l\"> LMSan (Lightweight Memory Sanitizer) \u2014 ur\u010duje pou\u017eit\u00ed neinitializovan\u00fdch dat v pam\u011bti. Detektor je ozna\u010den jako experiment\u00e1ln\u00ed a nedoporu\u010duje se pro pou\u017e\u00edv\u00e1n\u00ed.  <\/ul>\n<p>GWPSan analyzuje spustiteln\u00fd k\u00f3d programu pomoc\u00ed r\u00e1mce DynamoRIO k dek\u00f3dov\u00e1n\u00ed strojov\u00e9ho k\u00f3du na abstraktn\u00ed instrukce ISA, kter\u00e9 se pot\u00e9 vykon\u00e1vaj\u00ed pomoc\u00ed emulace. Skrze periodick\u00e9 sign\u00e1ly od \u010dasova\u010de se vyvol\u00e1v\u00e1 unified handler, kter\u00fd p\u0159i ka\u017ed\u00e9m zavol\u00e1n\u00ed vykon\u00e1 ur\u010ditou \u010d\u00e1st instrukc\u00ed pro analyzovan\u00fd proud. V p\u0159\u00edpad\u011b detekce p\u0159i vykon\u00e1v\u00e1n\u00ed ur\u010dit\u00fdch instrukc\u00ed se spust\u00ed detektor probl\u00e9m\u016f specifick\u00fd pro dan\u00e9 instrukce, nap\u0159\u00edklad pro instrukce p\u0159istupuj\u00edc\u00ed k pam\u011bti se spust\u00ed detektor z\u00e1vodn\u00edch stav\u016f.<br \/>\n<br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=61317\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f GWPSan, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u0434\u043b\u044f \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f \u043e\u0448\u0438\u0431\u043e\u043a \u043d\u0430 \u044d\u0442\u0430\u043f\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439, \u0441\u043e\u0431\u0440\u0430\u043d\u043d\u044b\u0445 \u0434\u043b\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440 x86-64 \u0438 ARM64. GWPSan \u0441\u043e\u0431\u0438\u0440\u0430\u0435\u0442\u0441\u044f \u0432 \u0432\u0438\u0434\u0435 \u0440\u0430\u0437\u0434\u0435\u043b\u044f\u0435\u043c\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0441\u0432\u044f\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u043f\u0440\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 LD_PRELOAD \u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u0434\u043b\u044f \u0430\u043d\u0430\u043b\u0438\u0437\u0430 \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b\u0435 \u0432 \u044f\u0434\u0440\u0435 Linux \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u044b \u043e\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 (PERF_TYPE_BREAKPOINT) \u0438 \u0441\u044d\u043c\u043f\u043b\u0438\u043d\u0433\u0430 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432. \u041a\u043e\u0434 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-116371","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b 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n\u00e1stroj pro odhalov\u00e1n\u00ed chyb v pr\u016fb\u011bhu b\u011bhu aplikac\u00ed | ProHoster","description":"Spole\u010dnost Google zve\u0159ejnila zdrojov\u00e9 k\u00f3dy n\u00e1stroje GWPSan, ur\u010den\u00e9ho pro odhalov\u00e1n\u00ed chyb b\u011bhem b\u011bhu aplikac\u00ed sestaven\u00fdch pro architektury x86-64 a ARM64.","canonical_url":"https:\/\/prohoster.info\/cs\/blog\/news\/google-opublikoval-gwpsan-instrument-dlya-vyyavleniya-oshibok-na-stadii-vypolneniya-prilozhenij","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"cs_CZ","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47Google 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