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Block: Fix block/elevator.c elevator_get() off-by-one error
authorwzt.wzt@gmail.com <wzt.wzt@gmail.com>
Fri, 2 Apr 2010 06:41:14 +0000 (08:41 +0200)
committerJens Axboe <jens.axboe@oracle.com>
Fri, 2 Apr 2010 06:41:14 +0000 (08:41 +0200)
commita506aedc51093544ff0f9610af6066d18cb6abbe
tree3a23d5987c02a94eb46746ae29d50d2d9e38a150tree | snapshot
parentb2b163dd47024e445410b72d0c5df6d819c14dfdcommit | diff
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>
block/elevator.c diff | blob | history
Domain: System / Kernel;