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 2B4A83858404; Tue, 28 Dec 2021 21:55:02 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2B4A83858404
From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/28503] dl_iterate_phdr namespace violation
Date: Tue, 28 Dec 2021 21:55:02 +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: cvs-commit at gcc dot gnu.org
X-Bugzilla-Status: NEW
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-28503-131-zKgUEk1sZR@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-28503-131@http.sourceware.org/bugzilla/>
References: <bug-28503-131@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
X-BeenThere: glibc-bugs@sourceware.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Glibc-bugs mailing list <glibc-bugs.sourceware.org>
List-Unsubscribe: <https://sourceware.org/mailman/options/glibc-bugs>,
 <mailto:glibc-bugs-request@sourceware.org?subject=unsubscribe>
List-Archive: <https://sourceware.org/pipermail/glibc-bugs/>
List-Help: <mailto:glibc-bugs-request@sourceware.org?subject=help>
List-Subscribe: <https://sourceware.org/mailman/listinfo/glibc-bugs>,
 <mailto:glibc-bugs-request@sourceware.org?subject=subscribe>
X-List-Received-Date: Tue, 28 Dec 2021 21:55:02 -0000

https://sourceware.org/bugzilla/show_bug.cgi?id=3D28503

--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gn=
u.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=3Dglibc.git;h=3D5d28a8962dcb6ec056b=
81d730e3c6fb57185a210

commit 5d28a8962dcb6ec056b81d730e3c6fb57185a210
Author: Florian Weimer <fweimer@redhat.com>
Date:   Tue Dec 28 22:52:56 2021 +0100

    elf: Add _dl_find_object function

    It can be used to speed up the libgcc unwinder, and the internal
    _dl_find_dso_for_object function (which is used for caller
    identification in dlopen and related functions, and in dladdr).

    _dl_find_object is in the internal namespace due to bug 28503.
    If libgcc switches to _dl_find_object, this namespace issue will
    be fixed.  It is located in libc for two reasons: it is necessary
    to forward the call to the static libc after static dlopen, and
    there is a link ordering issue with -static-libgcc and libgcc_eh.a
    because libc.so is not a linker script that includes ld.so in the
    glibc build tree (so that GCC's internal -lc after libgcc_eh.a does
    not pick up ld.so).

    It is necessary to do the i386 customization in the
    sysdeps/x86/bits/dl_find_object.h header shared with x86-64 because
    otherwise, multilib installations are broken.

    The implementation uses software transactional memory, as suggested
    by Torvald Riegel.  Two copies of the supporting data structures are
    used, also achieving full async-signal-safety.

    Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

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