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Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg_pages() and rmap_walk() during migration by not migrating temporary stacks
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From: Christoph Lameter
Subject:
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg_pages() and rmap_walk() during migration by not migrating temporary stacks
Date: Saturday, May 1, 2010 - 6:56 pm
On Thu, 29 Apr 2010, Mel Gorman wrote:
quoted text
> There is a race between shift_arg_pages and migration that triggers this bug. > A temporary stack is setup during exec and later moved. If migration moves > a page in the temporary stack and the VMA is then removed before migration > completes, the migration PTE may not be found leading to a BUG when the > stack is faulted.
A simpler solution would be to not allow migration of the temporary stack? --
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Messages in current thread:
[PATCH 2/2] mm,migration: Avoid race between shift_arg_pag ...
, Mel Gorman
, (Thu Apr 29, 1:32 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Andrea Arcangeli
, (Thu Apr 29, 9:21 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Andrea Arcangeli
, (Fri Apr 30, 12:22 pm)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Rik van Riel
, (Fri Apr 30, 1:21 pm)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Andrea Arcangeli
, (Sat May 1, 2:39 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Rik van Riel
, (Sat May 1, 6:02 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Christoph Lameter
, (Sat May 1, 6:56 pm)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Minchan Kim
, (Sun May 2, 10:40 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Andrea Arcangeli
, (Sun May 2, 11:20 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Mel Gorman
, (Tue May 4, 2:45 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Mel Gorman
, (Tue May 4, 3:32 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Andrea Arcangeli
, (Tue May 4, 5:56 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Mel Gorman
, (Tue May 4, 7:33 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Andrea Arcangeli
, (Tue May 4, 7:44 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Christoph Lameter
, (Mon May 10, 10:41 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Mel Gorman
, (Mon May 10, 10:56 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Andrea Arcangeli
, (Mon May 10, 12:05 pm)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, KAMEZAWA Hiroyuki
, (Mon May 10, 5:10 pm)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Christoph Lameter
, (Tue May 11, 6:59 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Mel Gorman
, (Tue May 11, 8:11 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Christoph Lameter
, (Tue May 11, 8:56 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Mel Gorman
, (Tue May 11, 9:15 am)
Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg ...
, Andrea Arcangeli
, (Tue May 11, 9:29 am)
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