linux-kernel - Aligning tcmalloc with glibc 2.35 rseq ABI

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <432231420.24682.1643727496135.JavaMail.zimbra@efficios.com>
Date:   Tue, 1 Feb 2022 09:58:16 -0500 (EST)
From:   Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To:     Chris Kennelly <ckennelly@...gle.com>
Cc:     Paul Turner <pjt@...gle.com>, Peter Oskolkov <posk@...k.io>,
        Florian Weimer <fweimer@...hat.com>,
        libc-alpha <libc-alpha@...rceware.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Aligning tcmalloc with glibc 2.35 rseq ABI

Hi Chris,

You will probably want to have a look at the userspace rseq ABI exposed by glibc 2.35 to ensure
tcmalloc becomes compatible with it.

If it helps, you can have a look at how I modified librseq to play nicely with glibc 2.35:

https://git.kernel.org/pub/scm/libs/librseq/librseq.git/

Most relevant bits:

https://git.kernel.org/pub/scm/libs/librseq/librseq.git/tree/src/rseq.c#n108

Thanks,

Mathieu

-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com