linux-kernel - Re: [BUG] mellanox IB driver fails to load on large config

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Date:	Tue, 14 Jul 2015 23:06:26 +0300
From:	Or Gerlitz <gerlitz.or@...il.com>
To:	Alex Thorlton <athorlton@....com>
Cc:	andrew banman <abanman@....com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Doug Ledford <dledford@...hat.com>,
	Sean Hefty <sean.hefty@...el.com>,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	"David S. Miller" <davem@...emloft.net>,
	Roland Dreier <roland@...estorage.com>,
	Matan Barak <matanb@...lanox.com>,
	Moni Shoua <monis@...lanox.com>,
	Jack Morgenstein <jackm@....mellanox.co.il>,
	Yishai Hadas <yishaih@...lanox.com>,
	Eran Ben Elisha <eranbe@...lanox.com>,
	Ira Weiny <ira.weiny@...el.com>,
	"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>
Subject: Re: [BUG] mellanox IB driver fails to load on large config

On Tue, Jul 14, 2015 at 9:48 PM, Alex Thorlton <athorlton@....com> wrote:
> On Tue, Jul 14, 2015 at 01:22:34PM -0500, andrew banman wrote:
>> On Sat, Jul 11, 2015 at 11:20:19PM +0300, Or Gerlitz wrote:
>> > On Fri, Jul 10, 2015 at 10:15 PM, andrew banman <abanman@....com> wrote:
>> > > I'm seeing a large number of allocation errors originating from the Mellanox IB
>> > > driver when booting the 4.2-rc1 kernel on a 4096cpu 32TB memory system:
>> >
>> > Just to make sure, mlx4 works fine on this small (...) system with 4.1
>> > and 4.2-rc1 breaks, or 4.2-rc1 is the 1st time you're trying that
>> > config?
>>
>> I'll let Alex comment on that, he did some testing on that.
>
> I started seeing this on a 4.1-rc8 kernel, so it's been around for a
> little while.  It may have been around before 4.1-rc8, but I haven't run
> any kernels older than that on the big machine for some time.

To make sure I am correctly following, on 4.1-rc8  you also see
something, right? are these the same messages or different ones? if
the latter send to us.

Or.
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