8000 writeThreadRegisters in ExecutionContext has no atomic behaviour · Issue #208 · ManyThreads/mythos · GitHub
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writeThreadRegisters in ExecutionContext has no atomic behaviour #208

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rottaran opened this issue Apr 9, 2021 · 0 comments
Open

writeThreadRegisters in ExecutionContext has no atomic behaviour #208

rottaran opened this issue Apr 9, 2021 · 0 comments
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rottaran commented Apr 9, 2021

All action should check for correctness and, then, either fail or finish completely. writeThreadRegisters fails to set the FS and GS base addresses if they are non-canonical. However, at the point where this check is done, all other registers are already touched. And then the EC gets into trapped state whereas the invocation returns failure to the user. No failure to carry out an action should ever cause side effects.
@rottaran rottaran added the help wanted good for first contributions label Apr 9, 2021
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