Re: [PATCH 1/3] ptrace: ptrace_attach: check PF_KTHREAD + exit_stateinstead of ->mm

[Roland McGrath]

This changes the order of the already-traced and security checks.
It would match the previous behavior to have the ->exit_state and ->ptrace
checks before __ptrace_may_access().  This is a small nit, but it could
affect whether some existing harmless usage pattern starts generating new
access failure logging from security modules (e.g. SELinux avc denials).

I don't see any reason you can't just swap the order back as it was before.
If you do that,
Acked-by: Roland McGrath <roland@xxxxxxxxxx>


Thanks,
Roland
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