From: Larry Woodman <lwoodman@redhat.com>
Date: Fri, 24 Sep 2010 16:04:48 +0000 (-0400)
Subject: Avoid pgoff overflow in remap_file_pages
X-Git-Tag: v2.6.36-rc6~32
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5ec1055aa5632dd7a8283cdb5fa9be3c535eaa06;p=pandora-kernel.git

Avoid pgoff overflow in remap_file_pages

Thomas Pollet noticed that the remap_file_pages() system call in
fremap.c has a potential overflow in the first part of the if statement
below, which could cause it to process bogus input parameters.
Specifically the pgoff + size parameters could be wrap thereby
preventing the system call from failing when it should.

Reported-by: Thomas Pollet <thomas.pollet@gmail.com>
Signed-off-by: Larry Woodman <lwoodman@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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