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.

Tetsuo Handa committed 4 years ago

Commit 37ae5a01 parent 99d86901 file · +1 −1Browse files

Showing the changes to include/linux/blkdev.h (1 of 1 file). Show all

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include/linux/blkdev.h+1−1

@@ -45,7 +45,7 @@ struct blk_crypto_profile; · 44 unmodified lines
45	*/	45	*/
46	#define BLKCG_MAX_POLS 6	46	#define BLKCG_MAX_POLS 6
47		47
48	static inline int blk_validate_block_size(unsigned int bsize)	48	static inline int blk_validate_block_size(unsigned long bsize)
49	{	49	{
50	if (bsize < 512 \|\| bsize > PAGE_SIZE \|\| !is_power_of_2(bsize))	50	if (bsize < 512 \|\| bsize > PAGE_SIZE \|\| !is_power_of_2(bsize))
51	return -EINVAL;	51	return -EINVAL;