From: Borislav Petkov <bp@alien8.de>
To: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
Tony Luck <tony.luck@intel.com>, Vivek Goyal <vgoyal@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Junichi Nomura <j-nomura@ce.jp.nec.com>,
Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Subject: Re: [PATCH 1/2] x86: mce: kdump: use under_crashdumping to turn off MCE in all CPUs together
Date: Mon, 23 Feb 2015 18:06:53 +0100 [thread overview]
Message-ID: <20150223170653.GA16699@pd.tnic> (raw)
In-Reply-To: <54EB4A17.6020800@gmail.com>
On Tue, Feb 24, 2015 at 12:41:11AM +0900, Naoya Horiguchi wrote:
> What I saw was that once in hundreds of kdump and reboot cycle we hit
> kdump failure and panic with "Timeout synchronizing machine check over
> CPUs" message.
Ok, but this doesn't necessarily mean you're seeing an MCE.
Or perhaps your NMI shooting down is causing an MCE once in a hundred
kdump cycles, i.e. I'm looking at nmi_shootdown_cpus().
Can you send me a dmesg from such a case where this happens? The more
verbose, the better.
Thanks.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
--
next prev parent reply other threads:[~2015-02-23 17:08 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-23 9:12 [PATCH 1/2] x86: mce: kdump: use under_crashdumping to turn off MCE in all CPUs together Naoya Horiguchi
2015-02-23 9:12 ` [PATCH 2/2] x86: mce: comment about MCE synchronization timeout on definition of tolerant Naoya Horiguchi
2015-02-23 9:27 ` [PATCH 1/2] x86: mce: kdump: use under_crashdumping to turn off MCE in all CPUs together Borislav Petkov
2015-02-23 13:01 ` Naoya Horiguchi
2015-02-23 13:58 ` Borislav Petkov
2015-02-23 15:41 ` Naoya Horiguchi
2015-02-23 17:06 ` Borislav Petkov [this message]
2015-02-24 8:15 ` Naoya Horiguchi
2015-02-24 9:56 ` Borislav Petkov
2015-02-24 18:20 ` Luck, Tony
2015-02-24 18:40 ` Borislav Petkov
2015-02-24 18:47 ` Luck, Tony
2015-02-24 21:19 ` Borislav Petkov
2015-02-25 0:54 ` Naoya Horiguchi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20150223170653.GA16699@pd.tnic \
--to=bp@alien8.de \
--cc=j-nomura@ce.jp.nec.com \
--cc=k-ueda@ct.jp.nec.com \
--cc=linux-kernel@vger.kernel.org \
--cc=n-horiguchi@ah.jp.nec.com \
--cc=nao.horiguchi@gmail.com \
--cc=tony.luck@intel.com \
--cc=vgoyal@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox