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In reply to Comment by Anonymous
Unsafe core files are only an issue if you use SIGABRT. SIGKILL leaves no core. While it's true that there's a certain degree of sketchiness inherent to any entropy gathering, the kernel has access to far better sources of entropy, like network traffic, disk latencies, and mouse movements, and bolsters it by mixing in a random seed that's carried over across reboots. getentropy_fallback does an impressive job considering the circumstances, but it's still not nearly as good as the kernel, and loses quite a bit of its effectiveness if a program is statically linked and addresses of functions are constant.
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