{"id":181784,"date":"2026-05-28T14:48:41","date_gmt":"2026-05-28T12:48:41","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/greg-kroa-hartman-rasskazal-o-tom-kak-rust-mozhet-pomoch-v-borbe-s-oshibkami-v-yadre-linux"},"modified":"2026-05-28T14:48:41","modified_gmt":"2026-05-28T12:48:41","slug":"greg-kroa-hartman-rasskazal-o-tom-kak-rust-mozhet-pomoch-v-borbe-s-oshibkami-v-yadre-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/greg-kroa-hartman-rasskazal-o-tom-kak-rust-mozhet-pomoch-v-borbe-s-oshibkami-v-yadre-linux","title":{"rendered":"Greg Kroa-Hartman falou sobre como Rust pode ajudar na luta contra bugs no n\u00facleo do Linux.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Greg Kroah-Hartman, respons\u00e1vel pela manuten\u00e7\u00e3o das ramifica\u00e7\u00f5es est\u00e1veis e de \"staging\" do n\u00facleo Linux e atuando como mantenedor em 16 subsistemas do n\u00facleo, fez uma apresenta\u00e7\u00e3o na confer\u00eancia Rust Week 2026, na qual discutiu como a linguagem Rust pode ajudar a prevenir a introdu\u00e7\u00e3o de vulnerabilidades no n\u00facleo, provocadas por erros comuns de programadores na linguagem C, relacionados com gerenciamento de mem\u00f3ria, bloqueios, tratamento de erros e manipula\u00e7\u00e3o de dados n\u00e3o confi\u00e1veis. A principal vantagem do Rust \u00e9 a sua capacidade de detectar esses erros na fase de compila\u00e7\u00e3o, e n\u00e3o na revis\u00e3o de c\u00f3digo feita por humanos. No entanto, o Rust n\u00e3o \u00e9 visto como uma panaceia que possa resolver todos os problemas, e ningu\u00e9m planeja reescrever o n\u00facleo em Rust: espera-se uma ado\u00e7\u00e3o gradual do Rust atrav\u00e9s da sua aplica\u00e7\u00e3o em novos drivers e subsistemas.<\/p>\n<p>Como exemplo de erros no n\u00facleo que poderiam ser evitados com o uso do Rust, foi citada uma falha no subsistema Bluetooth que passou despercebida por 15 anos, al\u00e9m de um problema no hipervisor Xen. No primeiro caso, o desenvolvedor realizou uma desreferencia\u00e7\u00e3o de ponteiro sem checagem, e no segundo, esqueceu de liberar um bloqueio no c\u00f3digo de tratamento de erros.<br \/>\nSegundo Greg, a maioria dos erros no n\u00facleo \u00e9 causada por essas pequenas falhas que se acumulam ao longo do tempo e emergem como vulnerabilidades. No Rust, muitos desses problemas s\u00e3o evitados pelo compilador; por exemplo, as abstra\u00e7\u00f5es de bloqueio do Rust no n\u00facleo permitem o acesso a ponteiros internos de estruturas somente ap\u00f3s a aquisi\u00e7\u00e3o do bloqueio apropriado, que \u00e9 liberado automaticamente. Sem a aquisi\u00e7\u00e3o do bloqueio, n\u00e3o \u00e9 poss\u00edvel acessar ponteiros de estruturas em Rust. <\/p>\n<p>Greg acredita que funcionalidades como essas do Rust teriam evitado 60% dos erros encontrados no n\u00facleo, e as checagens feitas pelo compilador economizariam tempo dos mantenedores na discuss\u00e3o com os autores sobre a corre\u00e7\u00e3o do tratamento de erros e a adequa\u00e7\u00e3o da aplica\u00e7\u00e3o de bloqueios nos locais corretos. Al\u00e9m disso, a implementa\u00e7\u00e3o do suporte ao Rust j\u00e1 teve um efeito ben\u00e9fico tamb\u00e9m no c\u00f3digo em C do n\u00facleo, devido \u00e0 limpeza do c\u00f3digo em C e das interfaces, bem como ao empr\u00e9stimo de algumas t\u00e9cnicas de desenvolvimento (por exemplo, foram implementados bloqueios com escopo limitado).<\/p>\n<p>Gra\u00e7as ao sistema de tipos, que garante a conformidade com as regras definidas, e \u00e0 aplica\u00e7\u00e3o de sistemas de integra\u00e7\u00e3o cont\u00ednua que verificam o c\u00f3digo na fase de compila\u00e7\u00e3o, ao revisar altera\u00e7\u00f5es no Rust, os revisores podem se concentrar na verifica\u00e7\u00e3o da l\u00f3gica de funcionamento, em vez de acompanharem manipula\u00e7\u00f5es de recursos. A utiliza\u00e7\u00e3o do Rust tamb\u00e9m permite uma abordagem mais cuidadosa em rela\u00e7\u00e3o aos dados provenientes de hardware ou sistemas externos. Isso \u00e9 alcan\u00e7ado por meio da clara distin\u00e7\u00e3o entre dados confi\u00e1veis e n\u00e3o confi\u00e1veis no n\u00edvel do sistema de tipos: o desenvolvedor precisa apenas realizar uma an\u00e1lise ao transitar de um estado n\u00e3o confi\u00e1vel para um confi\u00e1vel.<\/p>\n<p>Recentemente, a equipe respons\u00e1vel pela seguran\u00e7a do n\u00facleo tem publicado cerca de 13 relat\u00f3rios de vulnerabilidades todos os dias, o que, em compara\u00e7\u00e3o com a din\u00e2mica anterior de identifica\u00e7\u00e3o de vulnerabilidades, \u00e9 visto como uma esp\u00e9cie de loucura (por exemplo, ontem foram publicados 277 relat\u00f3rios de vulnerabilidades no n\u00facleo). De acordo com Greg, o uso do Rust \u00e9 uma das maneiras reais de reduzir o n\u00famero de erros no n\u00facleo causados por equ\u00edvocos tradicionais no tratamento de erros e na gest\u00e3o de recursos. No n\u00facleo, o suporte ao Rust j\u00e1 ultrapassou os limites do experimento e, no final do ano passado, foi reconhecido como uma funcionalidade oficial do n\u00facleo. <\/p>\n<p><center><div class=\"youtube-placeholder\" data-id=\"0vhGWclF7LU\" onclick=\"loadVideo(this)\">\r\n        <img decoding=\"async\" src=\"https:\/\/img.youtube.com\/vi\/0vhGWclF7LU\/hqdefault.jpg\" alt=\"Por que no hosting comum a administra\u00e7\u00e3o do PrestaShop \u00e9 lenta, e no seu n\u00e3o \u00e9?\" loading=\"lazy\" width=\"480\" height=\"360\" style=\"width:100%;height:auto;\">\r\n        <div class=\"play-button\"><\/div>\r\n    <\/div><\/center><br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65549\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0413\u0440\u0435\u0433 \u041a\u0440\u043e\u0430-\u0425\u0430\u0440\u0442\u043c\u0430\u043d (Greg Kroah-Hartman), \u043e\u0442\u0432\u0435\u0447\u0430\u044e\u0449\u0438\u0439 \u0437\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u043e\u0439 \u0438 &#171;staging&#187; 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