From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@linux.com>,
Ming Lei <ming.lei@canonical.com>,
Pekka Enberg <penberg@kernel.org>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
David Rientjes <rientjes@google.com>, Mel Gorman <mel@csn.ul.ie>,
Johannes Weiner <hannes@cmpxchg.org>,
Pauli Nieminen <suokkos@gmail.com>,
Dave Airlie <airlied@linux.ie>,
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
bugzilla-daemon@bugzilla.kernel.org,
luke-jr+linuxbugs@utopios.org, dri-devel@lists.freedesktop.org,
linux-mm@kvack.org
Subject: Re: [Bug 87891] New: kernel BUG at mm/slab.c:2625!
Date: Wed, 12 Nov 2014 03:22:41 +0200 [thread overview]
Message-ID: <20141112012241.GA17446@node.dhcp.inet.fi> (raw)
In-Reply-To: <20141111164913.3616531c21c91499871c46de@linux-foundation.org>
On Tue, Nov 11, 2014 at 04:49:13PM -0800, Andrew Morton wrote:
> On Tue, 11 Nov 2014 18:36:28 -0600 (CST) Christoph Lameter <cl@linux.com> wrote:
>
> > On Tue, 11 Nov 2014, Andrew Morton wrote:
> >
> > > There's no point in doing
> > >
> > > #define GFP_SLAB_BUG_MASK (__GFP_DMA32|__GFP_HIGHMEM|~__GFP_BITS_MASK)
> > >
> > > because __GFP_DMA32|__GFP_HIGHMEM are already part of ~__GFP_BITS_MASK.
> >
> > ?? ~__GFP_BITS_MASK means bits 25 to 31 are set.
> >
> > __GFP_DMA32 is bit 2 and __GFP_HIGHMEM is bit 1.
>
> Ah, yes, OK.
>
> I suppose it's possible that __GFP_HIGHMEM was set.
>
> do_huge_pmd_anonymous_page
> ->pte_alloc_one
> ->alloc_pages(__userpte_alloc_gfp==__GFP_HIGHMEM)
do_huge_pmd_anonymous_page
alloc_hugepage_vma
alloc_pages_vma(GFP_TRANSHUGE)
GFP_TRANSHUGE contains GFP_HIGHUSER_MOVABLE, which has __GFP_HIGHMEM.
--
Kirill A. Shutemov
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next prev parent reply other threads:[~2014-11-12 1:22 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-87891-27@https.bugzilla.kernel.org/>
2014-11-11 23:31 ` [Bug 87891] New: kernel BUG at mm/slab.c:2625! Andrew Morton
2014-11-11 23:31 ` Andrew Morton
2014-11-12 0:36 ` Christoph Lameter
2014-11-12 0:49 ` Andrew Morton
2014-11-12 0:54 ` Luke Dashjr
2014-11-12 1:02 ` Andrew Morton
2014-11-12 1:22 ` Joonsoo Kim
2014-11-12 1:44 ` Andrew Morton
2014-11-12 1:44 ` Andrew Morton
2014-11-12 2:13 ` Joonsoo Kim
2014-11-12 4:08 ` Tetsuo Handa
2014-11-12 4:38 ` Andrew Morton
2014-11-12 4:38 ` Andrew Morton
2014-11-13 13:43 ` [PATCH] drm/ttm: Avoid memory allocation from shrinker functions Tetsuo Handa
2014-11-12 1:22 ` Kirill A. Shutemov [this message]
2014-11-12 1:47 ` [Bug 87891] New: kernel BUG at mm/slab.c:2625! Kirill A. Shutemov
2014-11-12 1:56 ` Andrew Morton
2014-11-12 1:56 ` Andrew Morton
2014-11-12 2:07 ` Kirill A. Shutemov
2014-11-12 2:17 ` Joonsoo Kim
2014-11-12 2:37 ` Kirill A. Shutemov
2014-11-12 8:21 ` Joonsoo Kim
2014-11-12 10:39 ` Mel Gorman
2014-11-13 6:37 ` Joonsoo Kim
2014-11-12 0:44 ` Joonsoo Kim
2014-11-12 0:53 ` Andrew Morton
2014-11-12 0:53 ` Andrew Morton
2014-11-12 1:04 ` Christoph Lameter
2014-11-13 7:04 ` Vlastimil Babka
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