linux-kernel - Re: v2.6.26-rc9: kernel BUG at kernel/sched.c:5858!

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Date:	Fri, 11 Jul 2008 11:02:25 +0200
From:	"Dmitry Adamushko" <dmitry.adamushko@...il.com>
To:	"Vegard Nossum" <vegard.nossum@...il.com>
Cc:	Yanmin <yanmin_zhang@...ux.intel.com>,
	"Rusty Russell" <rusty@...tcorp.com.au>,
	"Ingo Molnar" <mingo@...e.hu>,
	"Peter Zijlstra" <a.p.zijlstra@...llo.nl>,
	"Dhaval Giani" <dhaval@...ux.vnet.ibm.com>,
	"Gautham R Shenoy" <ego@...ibm.com>,
	"Heiko Carstens" <heiko.carstens@...ibm.com>, miaox@...fujitsu.com,
	"Lai Jiangshan" <laijs@...fujitsu.com>,
	"Avi Kivity" <avi@...ranet.com>, linux-kernel@...r.kernel.org
Subject: Re: v2.6.26-rc9: kernel BUG at kernel/sched.c:5858!

Vegard,

regarding the first crash. Would you please run your test with the
following debugging patch and let me know its output?

The apperance of " * [ pid ] comm (name), orig_cpu() ... " means we
hit a problematic case (with Miao Xie's patch it shouldn't crash).

I see that you have CONFIG_SCHED_DEBUG=y so I'm also interested in
messages from sched_domain_debug() - "CPU# attaching ...". IOW, all
the kernel messages appearing while a cpu is going down and up.

TIA,

-- 
Best regards,
Dmitry Adamushko

View attachment "hotplug-debug.patch" of type "text/x-patch" (1368 bytes)