linux-kernel - RE: [PATCH 3/3] mce: acpi/apei: trace: Enable ghes memory error trace event

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 for Android: free password hash cracker in your pocket

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

Date:	Tue, 13 Aug 2013 18:05:02 +0000
From:	"Luck, Tony" <tony.luck@...el.com>
To:	Borislav Petkov <bp@...en8.de>,
	"Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
CC:	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	"bhelgaas@...gle.com" <bhelgaas@...gle.com>,
	"rostedt@...dmis.org" <rostedt@...dmis.org>,
	"rjw@...k.pl" <rjw@...k.pl>,
	"lance.ortiz@...com" <lance.ortiz@...com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 3/3] mce: acpi/apei: trace: Enable ghes memory error
 trace event

> Why would you need dmesg if you get your hw errors over the tracepoint?

Redundancy is a good thing when talking about mission critical systems.  dmesg
may be feeding to a serial console to be logged and analysed on another system.

The tracepoint data goes to a process on the system experiencing the errors. If the
errors are serious (or a precursor to something serious) that process may never get
the chance to save the log.

-Tony