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Security versus the dreaded “cleanup”
The summary of this error. According to a report, the problem occurs because the 32-bit call emulation layer does not check whether the call is truly in the Syscall table. Ben Hawkes, who discovered the problem, says the vulnerability can be exploited to execute arbitrary code with kernel rights. An exploit (direct download of source code) is…
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memories
For some reason, all copies of an early variant of RTLinux called “myrtlinux” by its Italian “author” have disappeared from the web, but thanks to some archives we can find some fragments from old days. For example, within a year or two of this email, the story had changed rather dramatically. To me, there were…
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Doing it wrong: Poul-Henning Kamp
Kamp writes to explain that virtual memory behavior can be important for program performance. That is, he explains From the programmer’s standpoint, the working set of information is the smallest collection of information that must be present in main memory to assure efficient execution of his program. But that note is actually from Peter Denning’s…
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Process algebra reconsidered
Paper is here. The following incorrect claim is not unusual in the process algebra literature. Basically, what is missing [in classical automata theory] is the notion of interaction: during the execution from initial state to fi nal state, a system may interact with another system. This is needed in order to describe parallel or distributed systems,…
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out of the loop in silicon valley
NYTimes. But when she was raising money for Crimson Hexagon, a start-up company she co-founded in 2007, she recalls one venture capitalist telling her that it didn’t matter that she didn’t have business cards, because all they would say was “Mom.” Another potential backer, reports Claire Cain Miller in The New York Times, invited her…
