Messages in this thread | | | From | "Alejandro Colomar (man-pages)" <> | Subject | [Bug 210655] ptrace.2: documentation is incorrect about access checking threads in same thread group | Date | Tue, 15 Dec 2020 18:01:25 +0100 |
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Hi,
There's a bug report: https://bugzilla.kernel.org/show_bug.cgi?id=210655
[[ Under "Ptrace access mode checking", the documentation states: "1. If the calling thread and the target thread are in the same thread group, access is always allowed."
This is incorrect. A thread may never attach to another in the same group.
Reference, ptrace_attach() https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/kernel/ptrace.c?h=v5.9.14#n380 ]]
I just wanted to make sure that it is a bug in the manual page, and not in the implementation.
Thanks,
Alex
-- Alejandro Colomar Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/ http://www.alejandro-colomar.es
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