Date: Sat, 20 Dec 2014 11:49:55 -0500
From: Dave Jones <davej@redhat.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Chris Mason <clm@fb.com>, Mike Galbraith <umgwanakikbuti@gmail.com>,
        Ingo Molnar <mingo@kernel.org>, Peter Zijlstra <peterz@infradead.org>,
        =?iso-8859-1?Q?D=E2niel?= Fraga <fragabr@gmail.com>,
        Sasha Levin <sasha.levin@oracle.com>,
        "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Suresh Siddha <sbsiddha@gmail.com>, Oleg Nesterov <oleg@redhat.com>,
        Peter Anvin <hpa@linux.intel.com>
Subject: Re: frequent lockups in 3.18rc4
Message-ID: <20141220164955.GA6315@redhat.com>
Mail-Followup-To: Dave Jones <davej@redhat.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Chris Mason <clm@fb.com>, Mike Galbraith <umgwanakikbuti@gmail.com>,
	Ingo Molnar <mingo@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	=?iso-8859-1?Q?D=E2niel?= Fraga <fragabr@gmail.com>,
	Sasha Levin <sasha.levin@oracle.com>,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Suresh Siddha <sbsiddha@gmail.com>, Oleg Nesterov <oleg@redhat.com>,
	Peter Anvin <hpa@linux.intel.com>
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 <20141219145528.GC13404@redhat.com>
 <CA+55aFychipT9e0DenUumsGJ-=9BUTOX-OmAmQ3azMCspUrUtw@mail.gmail.com>
 <CA+55aFyb6N47N2Jg75EmRxDTjFF2y_oy4dHNDeW_dyM4PUTDrA@mail.gmail.com>
 <CA+55aFzt_4Zrnek6381JFzm+3iV9d=JAeyx+=E9F8BeiWFb56g@mail.gmail.com>
 <20141219205435.GA24499@redhat.com>
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On Fri, Dec 19, 2014 at 02:05:20PM -0800, Linus Torvalds wrote:
 > > Right now I'm doing Chris' idea of "turn debugging back on,
 > > and try without serial console".  Shall I try your suggestion
 > > on top of that ?
 > 
 > Might as well. I doubt it really will make any difference, but I also
 > don't think it will interact badly in any way, so..

It locked up. It's not even responding to icmp.
It might be Monday before I can see what's on the console.

	Dave


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