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Vlastimil Babka d51e9894d2 mm/mempolicy.c: do not put mempolicy before using its nodemask 
Since commit be97a41b29 ("mm/mempolicy.c: merge alloc_hugepage_vma to
alloc_pages_vma") alloc_pages_vma() can potentially free a mempolicy by
mpol_cond_put() before accessing the embedded nodemask by
__alloc_pages_nodemask().  The commit log says it's so "we can use a
single exit path within the function" but that's clearly wrong.  We can
still do that when doing mpol_cond_put() after the allocation attempt.

Make sure the mempolicy is not freed prematurely, otherwise
__alloc_pages_nodemask() can end up using a bogus nodemask, which could
lead e.g.  to premature OOM.

Fixes: be97a41b29 ("mm/mempolicy.c: merge alloc_hugepage_vma to alloc_pages_vma")
Link: http://lkml.kernel.org/r/20170118141124.8345-1-vbabka@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org>	[4.0+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-01-24 16:26:14 -08:00
arch Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile 2017-01-23 13:51:59 -08:00
block
certs
crypto
Documentation Documentation/filesystems/proc.txt: add VmPin 2017-01-24 16:26:14 -08:00
drivers drivers/memstick/core/memstick.c: avoid -Wnonnull warning 2017-01-24 16:26:14 -08:00
firmware
fs proc: add a schedule point in proc_pid_readdir() 2017-01-24 16:26:14 -08:00
include kernel/watchdog: prevent false hardlockup on overloaded system 2017-01-24 16:26:14 -08:00
init
ipc
kernel kernel/watchdog: prevent false hardlockup on overloaded system 2017-01-24 16:26:14 -08:00
lib radix-tree: fix private list warnings 2017-01-24 16:26:14 -08:00
mm mm/mempolicy.c: do not put mempolicy before using its nodemask 2017-01-24 16:26:14 -08:00
net
samples
scripts
security
sound
tools virtio, vhost: fixes, cleanups 2017-01-22 12:40:09 -08:00
usr
virt
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS drm fixes across the board 2017-01-23 13:10:50 -08:00
Makefile Linux 4.10-rc5 2017-01-22 12:54:15 -08:00
README

README 

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.