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From: Sasha Levin <sasha.levin@oracle.com>
To: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>,
	"linux-mm@kvack.org" <linux-mm@kvack.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Dave Jones <davej@redhat.com>,
	LKML <linux-kernel@vger.kernel.org>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Rik van Riel <riel@redhat.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Cyrill Gorcunov <gorcunov@gmail.com>
Subject: Re: mm: BUG in unmap_page_range
Date: Mon, 08 Sep 2014 13:56:55 -0400	[thread overview]
Message-ID: <540DEDE7.4020300@oracle.com> (raw)
In-Reply-To: <20140908171853.GN17501@suse.de>

On 09/08/2014 01:18 PM, Mel Gorman wrote:
> A worse possibility is that somehow the lock is getting corrupted but
> that's also a tough sell considering that the locks should be allocated
> from a dedicated cache. I guess I could try breaking that to allocate
> one page per lock so DEBUG_PAGEALLOC triggers but I'm not very
> optimistic.

I did see ptl corruption couple days ago:

	https://lkml.org/lkml/2014/9/4/599

Could this be related?


Thanks,
Sasha

WARNING: multiple messages have this Message-ID (diff)
From: Sasha Levin <sasha.levin@oracle.com>
To: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>,
	"linux-mm@kvack.org" <linux-mm@kvack.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Dave Jones <davej@redhat.com>,
	LKML <linux-kernel@vger.kernel.org>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Rik van Riel <riel@redhat.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Cyrill Gorcunov <gorcunov@gmail.com>
Subject: Re: mm: BUG in unmap_page_range
Date: Mon, 08 Sep 2014 13:56:55 -0400	[thread overview]
Message-ID: <540DEDE7.4020300@oracle.com> (raw)
In-Reply-To: <20140908171853.GN17501@suse.de>

On 09/08/2014 01:18 PM, Mel Gorman wrote:
> A worse possibility is that somehow the lock is getting corrupted but
> that's also a tough sell considering that the locks should be allocated
> from a dedicated cache. I guess I could try breaking that to allocate
> one page per lock so DEBUG_PAGEALLOC triggers but I'm not very
> optimistic.

I did see ptl corruption couple days ago:

	https://lkml.org/lkml/2014/9/4/599

Could this be related?


Thanks,
Sasha

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  parent reply	other threads:[~2014-09-08 17:57 UTC|newest]

Thread overview: 86+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-02 21:58 mm: BUG in unmap_page_range Sasha Levin
2014-08-02 21:58 ` Sasha Levin
2014-08-04 11:40 ` Hugh Dickins
2014-08-04 11:40   ` Hugh Dickins
2014-08-05 14:44   ` Mel Gorman
2014-08-05 14:44     ` Mel Gorman
2014-08-06  0:42     ` Hugh Dickins
2014-08-06  0:42       ` Hugh Dickins
2014-08-06  1:04       ` Sasha Levin
2014-08-06  1:04         ` Sasha Levin
2014-08-12  3:28         ` Sasha Levin
2014-08-12  3:28           ` Sasha Levin
2014-08-12 10:47           ` [PATCH] x86,mm: fix pte_special versus pte_numa Mel Gorman
2014-08-12 10:47             ` Mel Gorman
2014-08-12 11:08             ` [PATCH] mm: Remove misleading ARCH_USES_NUMA_PROT_NONE Mel Gorman
2014-08-12 11:08               ` Mel Gorman
2014-08-13 13:14               ` Aneesh Kumar K.V
2014-08-13 13:14                 ` Aneesh Kumar K.V
2014-08-27  3:16           ` mm: BUG in unmap_page_range Sasha Levin
2014-08-27  3:16             ` Sasha Levin
2014-08-27 15:26             ` Mel Gorman
2014-08-27 15:26               ` Mel Gorman
2014-08-27 18:21               ` Sasha Levin
2014-08-27 18:21                 ` Sasha Levin
2014-08-30  1:23               ` Sasha Levin
2014-08-30  1:23                 ` Sasha Levin
2014-09-04  9:04                 ` Sasha Levin
2014-09-04  9:04                   ` Sasha Levin
2014-09-08 17:18                   ` Mel Gorman
2014-09-08 17:18                     ` Mel Gorman
2014-09-08 17:23                     ` Sasha Levin
2014-09-08 17:56                     ` Sasha Levin [this message]
2014-09-08 17:56                       ` Sasha Levin
2014-09-09 21:33                       ` Mel Gorman
2014-09-09 21:33                         ` Mel Gorman
2014-09-09 22:20                         ` Sasha Levin
2014-09-09 22:20                           ` Sasha Levin
2014-09-10  2:45                           ` Hugh Dickins
2014-09-10  2:45                             ` Hugh Dickins
2014-09-10 12:47                             ` Mel Gorman
2014-09-10 12:47                               ` Mel Gorman
2014-09-10 14:24                               ` Trinity and mbind flags (WAS: Re: mm: BUG in unmap_page_range) Sasha Levin
2014-09-10 14:24                                 ` Sasha Levin
2014-09-10 14:33                                 ` Dave Jones
2014-09-10 14:33                                   ` Dave Jones
2014-09-10 19:06                               ` mm: BUG in unmap_page_range Sasha Levin
2014-09-10 19:06                                 ` Sasha Levin
2014-09-10 19:36                               ` Hugh Dickins
2014-09-10 19:36                                 ` Hugh Dickins
2014-09-11  2:43                                 ` Sasha Levin
2014-09-11  2:43                                   ` Sasha Levin
2014-09-11 11:39                                   ` Hugh Dickins
2014-09-11 11:39                                     ` Hugh Dickins
2014-09-11 14:22                                     ` Sasha Levin
2014-09-11 14:22                                       ` Sasha Levin
2014-09-11 14:33                                       ` Dave Jones
2014-09-11 14:33                                         ` Dave Jones
2014-09-11 16:28                                     ` Mel Gorman
2014-09-11 16:28                                       ` Mel Gorman
2014-09-11 22:38                                       ` Sasha Levin
2014-09-11 22:38                                         ` Sasha Levin
2014-09-17 21:37                                         ` Sasha Levin
2014-09-17 21:37                                           ` Sasha Levin
2014-09-10 13:12                             ` Sasha Levin
2014-09-10 13:12                               ` Sasha Levin
2014-09-10 13:40                               ` Mel Gorman
2014-09-10 13:40                                 ` Mel Gorman
2014-09-10 16:44                                 ` Sasha Levin
2014-09-10 16:44                                   ` Sasha Levin
2014-09-10 19:09                               ` Hugh Dickins
2014-09-10 19:09                                 ` Hugh Dickins
2014-09-10 20:36                                 ` Sasha Levin
2014-09-10 20:36                                   ` Sasha Levin
2014-09-10 23:00                                   ` Hugh Dickins
2014-09-10 23:00                                     ` Hugh Dickins
2014-08-06 10:35       ` Mel Gorman
2014-08-06 10:35         ` Mel Gorman
2014-08-06  7:14     ` Aneesh Kumar K.V
2014-08-06  7:14       ` Aneesh Kumar K.V
2014-08-06  7:14       ` Aneesh Kumar K.V
2014-08-06 10:23       ` Mel Gorman
2014-08-06 10:23         ` Mel Gorman
2014-08-06 10:23         ` Mel Gorman
2014-08-07  8:40         ` Aneesh Kumar K.V
2014-08-07  8:40           ` Aneesh Kumar K.V
2014-08-07  8:40           ` Aneesh Kumar K.V

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