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Wen Yang 88d6ac40c1 mm/vmstat: fix divide error at __fragmentation_index
When order is -1 or too big, *1UL << order* will be 0, which will cause
a divide error.  Although it seems that all callers of
__fragmentation_index() will only do so with a valid order, the patch
can make it more robust.

Should prevent reoccurrences of
https://bugzilla.kernel.org/show_bug.cgi?id=196555

Link: http://lkml.kernel.org/r/1501751520-2598-1-git-send-email-wen.yang99@zte.com.cn
Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Reviewed-by: Jiang Biao <jiang.biao2@zte.com.cn>
Suggested-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-06 17:27:29 -07:00
arch mm: arch: consolidate mmap hugetlb size encodings 2017-09-06 17:27:28 -07:00
block
certs
crypto
Documentation
drivers
firmware
fs userfaultfd: provide pid in userfault msg - add feat union 2017-09-06 17:27:29 -07:00
include userfaultfd: provide pid in userfault msg - add feat union 2017-09-06 17:27:29 -07:00
init
ipc
kernel
lib
mm mm/vmstat: fix divide error at __fragmentation_index 2017-09-06 17:27:29 -07:00
net
samples
scripts
security
sound
tools userfaultfd: selftest: explicit failure if the SIGBUS test failed 2017-09-06 17:27:29 -07:00
usr
virt
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
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COPYING
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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.