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block: use "unsigned long" for blk_validate_block_size().

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commit 37ae5a0f5287a52cf51242e76ccf198d02ffe495 upstream.

Since lo_simple_ioctl(LOOP_SET_BLOCK_SIZE) and ioctl(NBD_SET_BLKSIZE) pass
user-controlled "unsigned long arg" to blk_validate_block_size(),
"unsigned long" should be used for validation.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/9ecbf057-4375-c2db-ab53-e4cc0dff953d@i-love.sakura.ne.jp
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: David Hunter <david.hunter.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tetsuo Handa 2021-12-18 18:41:56 +09:00 committed by Ksawlii
parent ff731d9e93
commit 824dca8cf5
1 changed files with 1 additions and 1 deletions
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2
include/linux/blkdev.h
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@ -61,7 +61,7 @@ struct blk_keyslot_manager;
*/
#define BLKCG_MAX_POLS 5
static inline int blk_validate_block_size(unsigned int bsize)
static inline int blk_validate_block_size(unsigned long bsize)
{
if (bsize < 512 || bsize > PAGE_SIZE || !is_power_of_2(bsize))
return -EINVAL;