From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx139.postini.com [74.125.245.139]) by kanga.kvack.org (Postfix) with SMTP id EAFFF6B005A for ; Fri, 8 Jun 2012 16:15:52 -0400 (EDT) Date: Fri, 8 Jun 2012 15:15:50 -0500 (CDT) From: Christoph Lameter Subject: Re: [Resend PATCH v2] mm: Fix slab->page _count corruption. In-Reply-To: <20120608131045.90708bda.akpm@linux-foundation.org> Message-ID: References: <1338405610-1788-1-git-send-email-pshelar@nicira.com> <20120608131045.90708bda.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Pravin B Shelar , penberg@kernel.org, aarcange@redhat.com, linux-mm@kvack.org, abhide@nicira.com On Fri, 8 Jun 2012, Andrew Morton wrote: > OK. I assume this bug has been there for quite some time. Well the huge pages refcount tricks caused the issue. > How serious is it? Have people been reporting it in real workloads? > How to trigger it? IOW, does this need -stable backporting? Possibly. > Also, someone forgot to document these: > > struct { > unsigned inuse:16; > unsigned objects:15; > unsigned frozen:1; > }; So far I thouight that the field names are pretty clear on their own. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org