{"id":104790,"date":"2022-08-07T21:36:50","date_gmt":"2022-08-07T19:36:51","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dlya-linux-predlozhen-mehanizm-verifikaczii-korrektnosti-raboty-yadra"},"modified":"2022-08-07T21:36:50","modified_gmt":"2022-08-07T19:36:51","slug":"dlya-linux-predlozhen-mehanizm-verifikaczii-korrektnosti-raboty-yadra","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/dlya-linux-predlozhen-mehanizm-verifikaczii-korrektnosti-raboty-yadra","title":{"rendered":"Um mecanismo de verifica\u00e7\u00e3o da integridade do kernel foi proposto para Linux.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Para integrar ao kernel do Linux 5.20 (possivelmente, a ramifica\u00e7\u00e3o receber\u00e1 o n\u00famero 6.0), foi proposto um conjunto de patches com a implementa\u00e7\u00e3o do mecanismo RV (Runtime Verification), que oferece ferramentas para a verifica\u00e7\u00e3o da integridade operacional em sistemas de alta confiabilidade, garantindo a aus\u00eancia de falhas. A verifica\u00e7\u00e3o \u00e9 realizada em tempo de execu\u00e7\u00e3o por meio da anexa\u00e7\u00e3o de manipuladores a pontos de rastreamento, que comparam o fluxo de execu\u00e7\u00e3o real com um modelo determin\u00edstico padr\u00e3o previamente definido, que determina o comportamento esperado do sistema.    <\/p>\n<p>As informa\u00e7\u00f5es dos pontos de rastreamento transferem o modelo de um estado para outro, e se o novo estado n\u00e3o corresponder aos par\u00e2metros do modelo, um aviso \u00e9 gerado ou o n\u00facleo \u00e9 colocado no estado &#171;panic&#187; (presume-se que sistemas de alta confiabilidade determinar\u00e3o essas situa\u00e7\u00f5es e reagir\u00e3o a elas). O modelo do aut\u00f4mato, que define as transi\u00e7\u00f5es de um estado para outro, \u00e9 exportado no formato &#171;dot&#187; (graphviz), e em seguida traduzido usando a utilidade dot2c para uma representa\u00e7\u00e3o em linguagem C, que \u00e9 carregada na forma de um m\u00f3dulo do n\u00facleo que monitora desvios da execu\u00e7\u00e3o em rela\u00e7\u00e3o ao modelo predefinido.    <center><img decoding=\"async\" alt=\"Um mecanismo de verifica\u00e7\u00e3o da integridade do kernel foi proposto para Linux.\" src=\"\/wp-content\/uploads\/2022\/08\/56f02964c804a17b5cf5d811b2777368.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>      <\/p>\n<p>A verifica\u00e7\u00e3o com o modelo durante a execu\u00e7\u00e3o \u00e9 posicionada como uma forma mais leve e simples de implementar na pr\u00e1tica a confirma\u00e7\u00e3o da integridade da execu\u00e7\u00e3o em sistemas cr\u00edticos, complementando m\u00e9todos cl\u00e1ssicos de valida\u00e7\u00e3o de confiabilidade, como verifica\u00e7\u00e3o de modelo e provas matem\u00e1ticas de conformidade do c\u00f3digo com especifica\u00e7\u00f5es definidas em linguagem formal. Entre as vantagens do RV, destaca-se a capacidade de garantir uma verifica\u00e7\u00e3o rigorosa sem a necessidade de uma implementa\u00e7\u00e3o separada de todo o sistema na linguagem de modelagem, bem como uma resposta flex\u00edvel a eventos imprevistos, por exemplo, para bloquear a propaga\u00e7\u00e3o de falhas em sistemas cr\u00edticos.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57605\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043b\u044f \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u044f\u0434\u0440\u0430 Linux 5.20 (\u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e, \u0432\u0435\u0442\u043a\u0430 \u043f\u043e\u043b\u0443\u0447\u0438\u0442 \u043d\u043e\u043c\u0435\u0440 6.0) \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d \u043d\u0430\u0431\u043e\u0440 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[&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":104791,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-104790","post","type-post","status-publish","format-standard","has-post-thumbnail","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=\"\u0414\u043b\u044f \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u044f\u0434\u0440\u0430 Linux 5.20 (\u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e, \u0432\u0435\u0442\u043a\u0430 \u043f\u043e\u043b\u0443\u0447\u0438\u0442 \u043d\u043e\u043c\u0435\u0440 6.0) \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0442\u0447\u0435\u0439 \u0441 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