From: wzt.wzt@gmail.com <wzt.wzt@gmail.com>
Date: Fri, 2 Apr 2010 06:41:14 +0000 (+0200)
Subject: Block: Fix block/elevator.c elevator_get() off-by-one error
X-Git-Tag: v2.6.34-rc4~11^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a506aedc51093544ff0f9610af6066d18cb6abbe;p=pandora-kernel.git

Block: Fix block/elevator.c elevator_get() off-by-one error

elevator_get() not check the name length, if the name length > sizeof(elv),
elv will miss the '\0'. And elv buffer will be replace "-iosched" as something
like aaaaaaaaa, then call request_module() can load an not trust module.

Signed-off-by: Zhitong Wang <zhitong.wangzt@alibaba-inc.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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