[PATCH v2] block: use "unsigned long" for blk_validate_block_size().
From: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Date: 2021-12-18 09:42:05
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
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> --- Changes in v2: Rewrite description. include/linux/blkdev.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index bd4370baccca..e13e41f7fad2 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h@@ -44,7 +44,7 @@ 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;
--
2.32.0