malhuda/msm-4.14
1
0
Fork 0
mirror of https://github.com/rd-stuffs/msm-4.14.git synced 2025-02-20 11:45:48 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

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

Browse Source 
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>
(cherry picked from commit ee12aa483f6c8cecbd5a4c794867fee0e068b822)
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
This commit is contained in:
Tetsuo Handa 2021-12-18 18:41:56 +09:00 committed by Vegard Nossum
parent 8e448b4536
commit 30a1325eab
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/blkdev.h
View File

@ -56,7 +56,7 @@ struct blk_stat_callback;
*/ */
#define BLKCG_MAX_POLS 3 #define BLKCG_MAX_POLS 3
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)) if (bsize < 512 || bsize > PAGE_SIZE || !is_power_of_2(bsize))
return -EINVAL; return -EINVAL;