From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Date: Mon, 8 Jul 2013 22:59:48 +0000 (-0700)
Subject: mm: mremap: validate input before taking lock
X-Git-Tag: v3.11-rc1~67^2~105
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9a2458a633d4b3c9e0eae506da40cf44dc075314;p=pandora-kernel.git

mm: mremap: validate input before taking lock

This patch is very similar to commit 84d96d897671 ("mm: madvise:
complete input validation before taking lock"): perform some basic
validation of the input to mremap() before taking the
&current->mm->mmap_sem lock.

This also makes the MREMAP_FIXED => MREMAP_MAYMOVE dependency slightly
more explicit.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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