From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Tue, 15 May 2012 08:47:47 +0000 (+0300)
Subject: hvc_xen: NULL dereference on allocation failure
X-Git-Tag: v3.5-rc1~89^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=201a52bea928687b7557728b176ac4f8a37d5cbd;p=pandora-kernel.git

hvc_xen: NULL dereference on allocation failure

If kzalloc() returns a NULL here, we pass a NULL to
xencons_disconnect_backend() which will cause an Oops.

Also I removed the __GFP_ZERO while I was at it since kzalloc() implies
__GFP_ZERO.

CC: stable@kernel.org
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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