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authorTetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>2021-12-18 18:41:56 +0900
committerJens Axboe <axboe@kernel.dk>2021-12-21 09:32:57 -0700
commit37ae5a0f5287a52cf51242e76ccf198d02ffe495 (patch)
tree9405a91bd2f5e8749d569e50b5460789618a2147
parent99d8690aae4b2f0d1d90075de355ac087f820a66 (diff)
block: use "unsigned long" for blk_validate_block_size().
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>
-rw-r--r--include/linux/blkdev.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index c80cfaefc0a8..bb5fb7282e6e 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -45,7 +45,7 @@ struct blk_crypto_profile;
*/
#define BLKCG_MAX_POLS 6
-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;