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]
Date:   Mon, 1 Apr 2019 17:23:14 +0000
From:   Alexei Starovoitov <>
To:     Daniel Borkmann <>,
        Alexei Starovoitov <>,
        Andrey Ignatov <>
CC:     Network Development <>,
        Alexei Starovoitov <>,
        Kernel Team <>
Subject: Re: [PATCH bpf-next 0/2] bpf: Support variable offset stack access
 from helpers

On 4/1/19 9:09 AM, Daniel Borkmann wrote:
> On 03/29/2019 08:10 PM, Alexei Starovoitov wrote:
>> On Thu, Mar 28, 2019 at 6:02 PM Andrey Ignatov <> wrote:
>>> The patch set adds support for stack access with variable offset from helpers.
>>> Patch 1 is the main patch in the set and provides more details.
>>> Patch 2 adds selftests for new functionality.
>> Applied. Thanks
> Hmm, I think this series needs more work unfortunately. The selftests are only
> checking root-only programs, which is way to little. For !root we do the spectre
> masking for map and stack ALU, and that hasn't been adapted here, so it will
> generate a wrong masking for runtime since it doesn't take variable part into
> account. Andrey, please take a look.

right. may be we should allow this for root only then?

Powered by blists - more mailing lists