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Re: livepatch: old_name@old_addr scheme in livepatch sysfs directory

From Jessica Yu <jeyu@redhat.com>
Newsgroups linux.kernel
Subject Re: livepatch: old_name@old_addr scheme in livepatch sysfs directory
Date 2015-11-01 03:00 +0100
Message-ID <qpQ66-1WP-1@gated-at.bofh.it> (permalink)
References <qpvkZ-6eJ-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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+++ Chris J Arges [30/10/15 22:44 -0500]:
>The following directory structure will allow for cases when the same
>function name exists in a single object.
>	/sys/kernel/livepatch/<patch>/<object>/<function@address>

Hi Chris, thanks for the patch.

I think the last time this issue was discussed, the conclusion was
that concatenating the address to the function name constitutes as an
information leak (as the sysfs entry is visible to non-root users).

One option suggested by Josh in that thread would be to do something
like "func.n", where n is just the nth occurrence of the symbol name. 

Another option might be to keep the func@addr format but not make these
entries visible to non-root users.

Jessica
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Thread

[PATCH] livepatch: old_name@old_addr scheme in livepatch sysfs directory Chris J Arges <chris.j.arges@canonical.com> - 2015-10-31 04:50 +0100
  Re: livepatch: old_name@old_addr scheme in livepatch sysfs directory Jessica Yu <jeyu@redhat.com> - 2015-11-01 03:00 +0100
    Re: livepatch: old_name@old_addr scheme in livepatch sysfs directory Chris J Arges <chris.j.arges@canonical.com> - 2015-11-01 05:10 +0100
      Re: livepatch: old_name@old_addr scheme in livepatch sysfs  directory Jiri Kosina <jikos@kernel.org> - 2015-11-01 10:10 +0100
        Re: livepatch: old_name@old_addr scheme in livepatch sysfs directory Jessica Yu <jeyu@redhat.com> - 2015-11-02 10:10 +0100

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