netdev - Re: [PATCH bpf] bpf: prevent out-of-bounds speculation

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

Message-ID: <1516200470.4184.26.camel@linux.intel.com>
Date:   Wed, 17 Jan 2018 14:47:50 +0000
From:   Alan Cox <alan@...ux.intel.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     Alexei Starovoitov <ast@...com>,
        "David S . Miller" <davem@...emloft.net>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jann Horn <jannh@...gle.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Elena Reshetova <elena.reshetova@...el.com>,
        Network Development <netdev@...r.kernel.org>,
        kernel-team <kernel-team@...com>,
        Will Deacon <will.deacon@....com>
Subject: Re: [PATCH bpf] bpf: prevent out-of-bounds speculation

>  (c) isn't actually done in any real CPU's today that I'm aware of
> (unless you want to call the return stack data speculation).

There are processors out there today that data speculate.

For Intel family 6 Core, Knights and Atom today all is good.

Alan