From: Mike Frysinger <vapier@gentoo.org>
Date: Sun, 14 Jun 2009 06:00:02 +0000 (-0400)
Subject: asm-generic: uaccess: add missing access_ok() check to strnlen_user()
X-Git-Tag: v2.6.31-rc1~33^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9844813f226f6d07e1544e915529cb88f4fcb868;p=pandora-kernel.git

asm-generic: uaccess: add missing access_ok() check to strnlen_user()

The strnlen_user() function was missing a access_ok() check on the pointer
given.  We've had cases on Blackfin systems where test programs caused
kernel crashes here because userspace passed up a NULL/-1 pointer and the
kernel gladly attempted to run strlen() on it.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---

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