{"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\/it\/blog\/news\/dlya-linux-predlozhen-mehanizm-verifikaczii-korrektnosti-raboty-yadra","title":{"rendered":"\u00c8 stato proposto un meccanismo per verificare la correttezza del funzionamento del kernel per Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Per l'inclusione nel kernel Linux 5.20 (\u00e8 possibile che il ramo riceva il numero 6.0) \u00e8 stato proposto un insieme di patch con l'implementazione del meccanismo RV (Runtime Verification), che rappresenta strumenti per verificare la correttezza del funzionamento su sistemi ad alta affidabilit\u00e0, garantendo l'assenza di guasti. La verifica avviene durante l'esecuzione tramite l'allegato di gestori ai punti di tracciamento, che confrontano il corso effettivo dell'esecuzione con un modello deterministico di riferimento precedentemente definito, che determina il comportamento atteso del sistema. <\/p>\n

Le informazioni dai punti di tracciamento trasferiscono il modello da uno stato all'altro e, se il nuovo stato non corrisponde ai parametri del modello, viene generato un avviso oppure il kernel passa allo stato di \u00abpanic\u00bb (si presume che i sistemi ad alta affidabilit\u00e0 siano in grado di identificare tali situazioni e reagire di conseguenza). Il modello dell'automa, che definisce le transizioni da uno stato all'altro, viene esportato in formato \u00abdot\u00bb (graphviz), dopodich\u00e9 viene tradotto utilizzando l'utilit\u00e0 dot2c in una rappresentazione in linguaggio C, che viene caricata sotto forma di modulo del kernel, monitorando le deviazioni del flusso di esecuzione rispetto al modello predefinito.

\"\u00c8<\/center> <\/p>\n

Il confronto con il modello durante l'esecuzione \u00e8 posizionato come un modo pi\u00f9 leggero e semplice da implementare nella pratica per confermare la correttezza dell'esecuzione su sistemi critici, complementando i metodi classici di conferma dell'affidabilit\u00e0, come la verifica del modello e le prove matematiche di conformit\u00e0 del codice alle specifiche fornite in un linguaggio formale. Tra i vantaggi dell'RV si menziona la possibilit\u00e0 di garantire una rigorosa verifica senza la necessit\u00e0 di implementare l'intero sistema in un linguaggio di modellazione, cos\u00ec come una flessibile reazione a eventi imprevisti, ad esempio, per bloccare la propagazione di guasti in sistemi critici.
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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