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-rw-r--r--block/blk-lib.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/block/blk-lib.c b/block/blk-lib.c
index 083e56f72308..46fe9248410d 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -31,6 +31,7 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
unsigned int granularity;
enum req_op op;
int alignment;
+ sector_t bs_mask;
if (!q)
return -ENXIO;
@@ -50,6 +51,10 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
op = REQ_OP_DISCARD;
}
+ bs_mask = (bdev_logical_block_size(bdev) >> 9) - 1;
+ if ((sector | nr_sects) & bs_mask)
+ return -EINVAL;
+
/* Zero-sector (unknown) and one-sector granularities are the same. */
granularity = max(q->limits.discard_granularity >> 9, 1U);
alignment = (bdev_discard_alignment(bdev) >> 9) % granularity;
@@ -150,10 +155,15 @@ int blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
unsigned int max_write_same_sectors;
struct bio *bio = NULL;
int ret = 0;
+ sector_t bs_mask;
if (!q)
return -ENXIO;
+ bs_mask = (bdev_logical_block_size(bdev) >> 9) - 1;
+ if ((sector | nr_sects) & bs_mask)
+ return -EINVAL;
+
/* Ensure that max_write_same_sectors doesn't overflow bi_size */
max_write_same_sectors = UINT_MAX >> 9;
@@ -202,6 +212,11 @@ static int __blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
int ret;
struct bio *bio = NULL;
unsigned int sz;
+ sector_t bs_mask;
+
+ bs_mask = (bdev_logical_block_size(bdev) >> 9) - 1;
+ if ((sector | nr_sects) & bs_mask)
+ return -EINVAL;
while (nr_sects != 0) {
bio = next_bio(bio, min(nr_sects, (sector_t)BIO_MAX_PAGES),