Bug 34942

Summary:	[Bug] Kdump does not work when panic triggered due to MCE
Product:	Platform Specific/Hardware	Reporter:	Maciej Rutecki (maciej.rutecki)
Component:	i386	Assignee:	platform_i386
Status:	RESOLVED OBSOLETE
Severity:	normal	CC:	alan, florian, maciej.rutecki, prasad, rjw
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.39-rc6	Subsystem:
Regression:	No	Bisected commit-id:

Description Maciej Rutecki 2011-05-11 18:52:14 UTC

Subject    : [Bug] Kdump does not work when panic triggered due to MCE
Submitter  : "K.Prasad" <prasad@linux.vnet.ibm.com>
Date       : 2011-05-06 16:54
Message-ID : 20110506165412.GB2719@in.ibm.com
References : http://marc.info/?l=linux-kernel&m=130470087226270&w=2

This entry is being used for tracking a regression from 2.6.38. Please don't
close it until the problem is fixed in the mainline.

Comment 1 K.Prasad 2011-07-11 06:00:46 UTC

I'm not sure if we can technically call this as a regression since kdump feature isn't working if the panic is triggered due to a fatal MCE, and the facility to inject MCEs were introduced in the kernel quite recently (the basic mce-inject.c file appears to have been introduced during v2.6.30 timeframe).

My report about kdump not working in http://marc.info/?l=linux-kernel&m=130470087226270&w=2, hasn't actually found out if it is broken since v2.6.30, so again we don't have enough information to qualify if it is a regression.

Given more time, I'd like to test the behaviour in kernel versions older than v2.6.38 and update the bug with details.

Let me know if more information is required.

Thanks,
K.Prasad

Comment 2 Florian Mickler 2011-08-08 19:17:14 UTC

Dropping from the list of regressions...