[PATCH 6/7] block: add WARN() in bio_split() for sector alignment
From: Satya Tangirala <hidden>
Date: 2021-01-14 15:48:54
Also in:
lkml
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
The number of sectors passed to bio_split() should be aligned to blk_crypto_bio_sectors_alignment(). All callers have been updated to ensure this, so add a WARN() if the number of sectors is not aligned. Signed-off-by: Satya Tangirala <redacted> --- block/bio.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/block/bio.c b/block/bio.c
index 1f2cc1fbe283..c5f577ee6b8d 100644
--- a/block/bio.c
+++ b/block/bio.c@@ -1472,6 +1472,7 @@ struct bio *bio_split(struct bio *bio, int sectors, BUG_ON(sectors <= 0); BUG_ON(sectors >= bio_sectors(bio)); + WARN_ON(!IS_ALIGNED(sectors, blk_crypto_bio_sectors_alignment(bio))); /* Zone append commands cannot be split */ if (WARN_ON_ONCE(bio_op(bio) == REQ_OP_ZONE_APPEND))
--
2.30.0.284.gd98b1dd5eaa7-goog