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  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:   Thu, 16 May 2019 10:16:27 +0200
From:   Ingo Molnar <>
To:     Jiri Kosina <>
Cc:     Geert Uytterhoeven <>,
        Josh Poimboeuf <>,
        Thomas Gleixner <>,
        Peter Zijlstra <>,
        Greg Kroah-Hartman <>,
        Ben Hutchings <>,,
Subject: Re: [PATCH] cpu/speculation: Warn on unsupported mitigations=

* Jiri Kosina <> wrote:

> On Thu, 16 May 2019, Geert Uytterhoeven wrote:
> > Currently, if the user specifies an unsupported mitigation strategy on
> > the kernel command line, it will be ignored silently.  The code will
> > fall back to the default strategy, possibly leaving the system more
> > vulnerable than expected.
> Honestly, I am not convinced. We are not doing this for vast majority of 
> other cmdline options either, if for any at all.

That's really a weakness - I've been bitten by this previously: I typoed 
or mis-remembered a command line option and didn't have it while I 
thought I had it.

Our boot-commandline library is pretty user-unfriendly.



Powered by blists - more mailing lists