From: Sonic Zhang <sonic.adi@gmail.com>
Date: Wed, 27 Sep 2006 08:50:17 +0000 (-0700)
Subject: [PATCH] Check if start address is in vma region in NOMMU function get_user_pages()
X-Git-Tag: v2.6.19-rc1~955
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=910e46da4b4e93d56ffea318c64afa41868d5e6d;p=pandora-kernel.git

[PATCH] Check if start address is in vma region in NOMMU function get_user_pages()

In NOMMU arch, if run "cat /proc/self/mem", data from physical address 0
are read.  This behavior is different from MMU arch.  In IA32, message
"cat: /proc/self/mem: Input/output error" is reported.

This issue is rootcaused by not validate the start address in NOMMU
function get_user_pages().  Following patch solves this issue.

Signed-off-by: Sonic Zhang <sonic.adi@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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