linux-kernel - Re: [PATCH v4 1/4] kexec: avoid compat_alloc_user

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: <CAK8P3a0OkF1G2kNTnn8Nh5aGAf5nnHNZqoQD3TB7mN2_VTV_9w@mail.gmail.com>
Date:   Wed, 21 Jul 2021 23:22:24 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     linux-arch <linux-arch@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Borislav Petkov <bp@...en8.de>,
        Brian Gerst <brgerst@...il.com>,
        Eric Biederman <ebiederm@...ssion.com>,
        Ingo Molnar <mingo@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux-MM <linux-mm@...ck.org>, kexec@...ts.infradead.org
Subject: Re: [PATCH v4 1/4] kexec: avoid compat_alloc_user_space

On Tue, Jul 20, 2021 at 5:37 PM Christoph Hellwig <hch@...radead.org> wrote:
>
> This can be simplified a little more by killing off
> copy_user_segment_list entirely, using memdup_user and dropping the
> not really required _locked wrapper.  The locking move might make
> most sense as a separate prep patch.

Ok, I've integrated this as separate patches into my series now, will resend
after some more build testing.

      Arnd