Re: [patch] mm: sparsemem memory_present() memory corruption fix

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To: Ingo Molnar <mingo@...>

Cc: Yinghai Lu <yhlu.kernel@...>, Linus Torvalds <torvalds@...>, Pekka Enberg <penberg@...>, <linux-kernel@...>, Mel Gorman <mel@...>, Nick Piggin <npiggin@...>, Andrew Morton <akpm@...>, Rafael J. Wysocki <rjw@...>, <apw@...>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@...>

Subject: Re: [patch] mm: sparsemem memory_present() memory corruption fix

Date: Tuesday, April 15, 2008 - 8:46 pm

On Wed, 16 Apr 2008, Ingo Molnar wrote:

quoted text> this is the only call to memory_present() we do in 32-bit arch setup, so 
> it's required.

We could clip there if SPARSEMEM is configured. I wonder if this affects 
other platforms that need HIGHMEM support?
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Messages in current thread:

[bug] mm/slab.c boot crash in -git, "kernel BUG at mm/slab.c..., Ingo Molnar, (Fri Apr 11, 3:41 am)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Pekka Enberg, (Fri Apr 11, 4:21 am)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Pekka Enberg, (Fri Apr 11, 4:50 am)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Ingo Molnar, (Fri Apr 11, 4:54 am)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Pekka Enberg, (Fri Apr 11, 5:05 am)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Christoph Lameter, (Fri Apr 11, 3:25 pm)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Ingo Molnar, (Tue Apr 15, 1:49 am)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Pekka Enberg, (Fri Apr 11, 5:08 am)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Christoph Lameter, (Fri Apr 11, 3:26 pm)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Pekka Enberg, (Fri Apr 11, 5:11 am)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 2:25 am)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Linus Torvalds, (Tue Apr 15, 12:02 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 12:15 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 4:23 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Linus Torvalds, (Tue Apr 15, 1:23 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Christoph Lameter, (Tue Apr 15, 3:39 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 3:54 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Christoph Lameter, (Tue Apr 15, 4:03 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 4:17 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Christoph Lameter, (Tue Apr 15, 4:54 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 4:58 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 5:08 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Pekka Enberg, (Tue Apr 15, 4:34 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 4:40 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Linus Torvalds, (Tue Apr 15, 5:06 pm)

[patch] mm: sparsemem memory_present() memory corruption fix, Ingo Molnar, (Tue Apr 15, 8:03 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Ingo Molnar, (Wed Apr 16, 11:03 am)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Mel Gorman, (Wed Apr 16, 10:05 am)

Re: [patch] mm: sparsemem memory_present() memory corruption..., KAMEZAWA Hiroyuki, (Tue Apr 15, 9:48 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Ingo Molnar, (Tue Apr 15, 8:34 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Linus Torvalds, (Tue Apr 15, 10:45 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Ingo Molnar, (Tue Apr 15, 8:40 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Ingo Molnar, (Tue Apr 15, 9:14 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Christoph Lameter, (Tue Apr 15, 8:45 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Ingo Molnar, (Tue Apr 15, 8:52 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Christoph Lameter, (Tue Apr 15, 8:19 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Ingo Molnar, (Tue Apr 15, 8:36 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Yinghai Lu, (Tue Apr 15, 8:33 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Ingo Molnar, (Tue Apr 15, 8:18 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Yinghai Lu, (Tue Apr 15, 8:32 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Ingo Molnar, (Tue Apr 15, 8:44 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Yinghai Lu, (Tue Apr 15, 8:56 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Ingo Molnar, (Tue Apr 15, 9:02 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Yinghai Lu, (Tue Apr 15, 9:17 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Christoph Lameter, (Tue Apr 15, 8:46 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Ingo Molnar, (Tue Apr 15, 8:52 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Ingo Molnar, (Tue Apr 15, 9:17 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Yinghai Lu, (Tue Apr 15, 9:30 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Yinghai Lu, (Tue Apr 15, 10:00 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., KAMEZAWA Hiroyuki, (Tue Apr 15, 10:20 pm)

Re: [patch] mm: sparsemem memory_present() memory corruption..., Christoph Lameter, (Tue Apr 15, 8:10 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 5:13 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 5:24 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Christoph Lameter, (Tue Apr 15, 5:42 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 5:55 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Christoph Lameter, (Tue Apr 15, 6:06 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Yinghai Lu, (Tue Apr 15, 7:18 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 6:13 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Christoph Lameter, (Tue Apr 15, 6:27 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Christoph Lameter, (Tue Apr 15, 7:22 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 7:27 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Christoph Lameter, (Tue Apr 15, 8:04 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Christoph Lameter, (Tue Apr 15, 7:32 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 6:32 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 4:28 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 4:34 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 4:42 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Christoph Lameter, (Tue Apr 15, 4:50 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 4:58 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Christoph Lameter, (Tue Apr 15, 5:08 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 5:19 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Mike Travis, (Tue Apr 15, 5:27 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Christoph Lameter, (Tue Apr 15, 5:21 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 5:23 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Christoph Lameter, (Tue Apr 15, 5:24 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 5:28 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 6:07 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Mike Travis, (Tue Apr 15, 5:43 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Christoph Lameter, (Tue Apr 15, 5:33 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Mike Travis, (Tue Apr 15, 5:16 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 3:35 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 3:41 pm)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Pekka Enberg, (Tue Apr 15, 2:41 am)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 3:08 am)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 5:11 am)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Yinghai Lu, (Tue Apr 15, 4:31 am)

Re: [bug] SLUB + mm/slab.c boot crash in -rc9, Ingo Molnar, (Tue Apr 15, 4:46 am)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Ingo Molnar, (Fri Apr 11, 5:24 am)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Mel Gorman, (Tue Apr 15, 5:36 am)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Ingo Molnar, (Tue Apr 15, 6:03 am)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Christoph Lameter, (Fri Apr 11, 3:28 pm)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Ingo Molnar, (Tue Apr 15, 1:43 am)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Christoph Lameter, (Sat Apr 12, 6:38 am)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Yinghai Lu, (Sat Apr 12, 1:22 pm)

Re: [bug] mm/slab.c boot crash in -git, "kernel BUG at mm/sl..., Nick Piggin, (Fri Apr 11, 6:34 am)

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