linux-kernel - Re: [PATCH 2/2] x86/MCE/AMD: Skip creating kobjects with NULL names

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 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:   Tue, 21 Aug 2018 15:15:41 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     "Ghannam, Yazen" <Yazen.Ghannam@....com>
Cc:     "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "tony.luck@...el.com" <tony.luck@...el.com>,
        "x86@...nel.org" <x86@...nel.org>
Subject: Re: [PATCH 2/2] x86/MCE/AMD: Skip creating kobjects with NULL names

On Thu, Aug 16, 2018 at 06:46:33PM +0000, Ghannam, Yazen wrote:
> Future SMCA systems may have banks whose MCA_IPID is not known so we

You lost me here. How would the IPID not be known? Are you talking about
an old kernel running on new HW and thus the HardwareID in its MCA_IPID
to be unknown to the old kernel?

> In the past, the sysfs entries were named something like "th_bank#" before
> each bank was given a more descriptive name. We can go back to this format
> as a fallback for unrecognized bank types. This will fix the issue with sysfs
> failing and also the interface will still work on new hardware.

You could do: th_bank#<HardwareID> so that we can find what it is by
grepping the PPR.

> I agree. I just wanted to make a small change and fix this issue. I
> think there's a lot we can do to clean up the thresholding code going
> forward.

ACK.

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
--