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(parent: 33d910e) | patch
null_blk: validate the number of devices
authorAndré Almeida <andrealmeid@collabora.com>
Wed, 11 Sep 2019 14:46:36 +0000 (11:46 -0300)
committerJens Axboe <axboe@kernel.dk>
Wed, 11 Sep 2019 22:04:25 +0000 (16:04 -0600)
commite20952aca6b2f26de5361512915e4a4866cd5271
tree342c22408ea5245be96bf4c4461d74555c90ea09tree | snapshot
parent33d910e671fdfb34d04afc9db9592a44b1312dbacommit | diff
null_blk: validate the number of devices

A negative number of devices is nonsensical, so change the type to
unsigned. If the number of devices is 0, it is impossible for userspace
to interact with the module, so refuse loading the driver for that case.

Signed-off-by: André Almeida <andrealmeid@collabora.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drivers/block/null_blk_main.c diff | blob | history
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