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Subjectptrace: Why does PTRACE_PEEKUSER not allow reading of FPU registers on x86?
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Hey folks,

Looking at arch/x86/kernel/ptrace.c, I can see that reading with
PTRACE_PEEKUSER is only supported within the user::regs and user::u_debugreg
fields. What's the reason that reading from user::i387 is disallowed?

Thanks,
Sy Brand


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