From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx157.postini.com [74.125.245.157]) by kanga.kvack.org (Postfix) with SMTP id 1EC486B0033 for ; Thu, 15 Aug 2013 10:46:03 -0400 (EDT) Date: Thu, 15 Aug 2013 16:46:00 +0200 From: Michal Hocko Subject: Re: [Bug] Reproducible data corruption on i5-3340M: Please revert 53a59fc67! Message-ID: <20130815144600.GD27864@dhcp22.suse.cz> References: <52050382.9060802@gmail.com> <520BB225.8030807@gmail.com> <20130814174039.GA24033@dhcp22.suse.cz> <20130814182756.GD24033@dhcp22.suse.cz> <520C9E78.2020401@gmail.com> <20130815134031.GC27864@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130815134031.GC27864@dhcp22.suse.cz> Sender: owner-linux-mm@kvack.org List-ID: To: Linus Torvalds Cc: Ben Tebulin , Mel Gorman , Johannes Weiner , Balbir Singh , KAMEZAWA Hiroyuki , linux-mm , Rik van Riel , Andrew Morton , LKML , Peter Zijlstra On Thu 15-08-13 15:40:31, Michal Hocko wrote: > On Thu 15-08-13 05:02:31, Linus Torvalds wrote: > > On Thu, Aug 15, 2013 at 2:25 AM, Ben Tebulin wrote: > > > > > > I just cherry-picked e6c495a96ce0 into 3.9.11 and 3.7.10. > > > Unfortunately this does _not resolve_ my issue (too good to be true) :-( > > > > Ho humm. I've found at least one other bug, but that one only affects > > hugepages. Do you perhaps have transparent hugepages enabled? But even > > then it looks quite unlikely. > > __unmap_hugepage_range is hugetlb not THP if you had that one in mind. > And yes, it doesn't set the range which sounds buggy. Or, did you mean tlb_remove_page called from zap_huge_pmd? That one should be safe as tlb_remove_pmd_tlb_entry sets need_flush and that means that the full range is flushed. -- Michal Hocko SUSE Labs -- 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