linux-kernel - Re: 3.2-rc2+: Reported regressions from 3.0 and 3.1

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Date:	Mon, 21 Nov 2011 14:29:02 -0800
From:	Andy Lutomirski <luto@...capital.net>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	Florian Mickler <florian@...kler.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Network Development <netdev@...r.kernel.org>,
	Linux ACPI <linux-acpi@...r.kernel.org>,
	Linux PM List <linux-pm@...ts.linux-foundation.org>,
	Linux SCSI List <linux-scsi@...r.kernel.org>,
	Linux Wireless List <linux-wireless@...r.kernel.org>,
	DRI <dri-devel@...ts.freedesktop.org>
Subject: Re: 3.2-rc2+: Reported regressions from 3.0 and 3.1

On Mon, Nov 21, 2011 at 2:18 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
> On Mon, Nov 21, 2011 at 1:49 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:
>>
>> Subject    : hugetlb oops on 3.1.0-rc8-devel
>> Submitter  : Andy Lutomirski <luto@...capital.net>
>> Date       : 2011-11-01 22:20
>> Message-ID : CALCETrW1mpVCz2tO5roaz1r6vnno+srHR-dHA6_pkRi2qiCfdw@...l.gmail.com
>> References : http://marc.info/?l=linux-kernel&m=132018604426692&w=2
>
> Despite the subject line, that's not an oops, it's a BUG_ON().
>
> And it *should* be fixed by commit ea4039a34c4c ("hugetlb: release
> pages in the error path of hugetlb_cow()") although I don't think Andy
> ever confirmed that (since it was hard to trigger).

I haven't seen it again, but that probably doesn't mean anything.
I've also fixed a bug in some userspace software I was running, and
that fix means I'm probably not stressing that part of the kernel
anymore.  (Even without the fix, it took two weeks to hit this.)
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