linux-kernel - [PATCH 0/7] uprobes: register/unregister preparations for filtering

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Message-ID: <20121123202741.GA18858@redhat.com>
Date:	Fri, 23 Nov 2012 21:27:41 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Cc:	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Anton Arapov <anton@...hat.com>, linux-kernel@...r.kernel.org
Subject: [PATCH 0/7] uprobes: register/unregister preparations for filtering

Hello.

Srikar, it is not clear if you was convinced or not during the
last discussion. We will discuss this again probably. So far
I am sending the initial changes which (I think) make sense in
any case. Please review.

The next step is locking. Alas, we can not use consumer_rwsem
to protect the list in filter_chain(). Whatever we do, at least
uprobe_mmap() needs to do this under mm->mmap_sem. And we do
want to allow uc->handler() to play with current->mm.

Then we will actually immplement filter_chain(), this should be
trivial unless you insist we need for_each_mm_user() (cough, I
hope you do not ;).

Then we will try to solve the problem with fork.

Oleg.

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