linux-kernel - Re: [PATCH v2 15/22] x86/fpu/xstate: Support ptracer-induced xstate area expansion

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-prev] [day] [month] [year] [list]

Message-ID: <ffa28f1070749ab00635608262c25bad2f11a185.camel@intel.com>
Date:   Tue, 8 Dec 2020 19:12:51 +0000
From:   "Bae, Chang Seok" <chang.seok.bae@...el.com>
To:     "luto@...nel.org" <luto@...nel.org>
CC:     "mingo@...nel.org" <mingo@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "bp@...e.de" <bp@...e.de>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "Liu, Jing2" <jing2.liu@...el.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "Shankar, Ravi V" <ravi.v.shankar@...el.com>,
        "Hansen, Dave" <dave.hansen@...el.com>,
        "Metzger, Markus T" <markus.t.metzger@...el.com>,
        "Brown, Len" <len.brown@...el.com>
Subject: Re: [PATCH v2 15/22] x86/fpu/xstate: Support ptracer-induced xstate
 area expansion

> On Dec 3, 2020, at 14:00, Andy Lutomirski <luto@...nel.org> wrote:
> 
> Have you confirmed that real ptrace users (gdb?  does anything
> actually use this code?) can handle the huge buffers that will be
> needed?

Yes, we thought there is actual usage for this. We (cc'ing Markus) will
support it on GDB.

Thanks,
Chang