From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <sourceware-bugzilla@sourceware.org>
Received: by sourceware.org (Postfix, from userid 48)
	id 53E06385840E; Wed, 22 Mar 2023 11:48:50 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 53E06385840E
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org;
	s=default; t=1679485730;
	bh=7YTgdd5yr8OX4ivdM2USLyhcMa6XuDQdbj9EVMz8VGc=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=NiyeR2uslemtNRqmOREHAWNpYZDwlBgTM0DyZRb1cucbkr0FK5WSgh/bQgAwcRCl2
	 Rx1MmwLwbCr8Y2xjpOwolsz+Qq3hf1sxiR97HvM/LIFvLcyQLC2A3nMaIDQNQHK6E3
	 vwJ2THB+HCnfkQR0bUejdEQXF+3xxgfhG6ieQPzo=
From: "parky at outlook dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/30186] RTLD_DEEPBIND interacts badly with
 LD_PRELOAD
Date: Wed, 22 Mar 2023 11:48:49 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: glibc
X-Bugzilla-Component: dynamic-link
X-Bugzilla-Version: unspecified
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: parky at outlook dot com
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at sourceware dot org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-30186-131-IjRdp1acbk@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-30186-131@http.sourceware.org/bugzilla/>
References: <bug-30186-131@http.sourceware.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://sourceware.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <glibc-bugs.sourceware.org>

https://sourceware.org/bugzilla/show_bug.cgi?id=3D30186

--- Comment #8 from Matthew Parkinson <parky at outlook dot com> ---
> This might work, the hook requires a global load and branch but it should=
 be=20
> a predictable branch and performance should be ok.  I would require to add
> additional hooks on every malloc function, adding another configuration l=
ayer
> which is an extra complexity for malloc interposition (which I am not very
> found on).

I agree the complexity is not nice.=20=20

> You might ask what other maintainers think about this approach,

Should I email libc-alpha to achieve this?

> I personally
> still think we should properly add preload option to have a more generic
> fix to fix symbol interpostion with RTLD_DEEPBIND for all possible symbols
> and not a ad-hoc fix for malloc.

This is not something I understand well enough to contribute to, so I am ju=
st
trying to understand if there is something I can do, or if I need to wait f=
or a
solution.

Thanks

--=20
You are receiving this mail because:
You are on the CC list for the bug.=