From: Sebastian Ott <sebott@linux.vnet.ibm.com>
Date: Thu, 26 Mar 2009 14:24:16 +0000 (+0100)
Subject: [S390] cio: fix wrong buffer access in cio_ignore_write
X-Git-Tag: v2.6.30-rc1~659^2~46
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=94cbc203bee4ea87bd49ad56f6c5381bc10d8b6b;p=pandora-kernel.git

[S390] cio: fix wrong buffer access in cio_ignore_write

Writing only spaces to /proc/cio_ignore will cause a buffer overflow
since the size_t value i will not become negative and so buf[-1UL] is
accessed. Change the value of i to ssize_t.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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