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(parent: 4e47ee8) | 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)
commitf7c4ce890dd23f2d41ad9630263aad6e9720af58
tree342c22408ea5245be96bf4c4461d74555c90ea09tree | snapshot
parent4e47ee8fbef08f1711ffcc2063ce0e3250141b16commit | 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 | blame | history
Linux 6.x block layer and io_uring tree(s)