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Message-Id: <20210114154723.2495814-7-satyat@google.com>
Date: Thu, 14 Jan 2021 15:47:22 +0000
From: Satya Tangirala <satyat@...gle.com>
To: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Jens Axboe <axboe@...nel.dk>, Eric Biggers <ebiggers@...gle.com>,
Satya Tangirala <satyat@...gle.com>
Subject: [PATCH 6/7] block: add WARN() in bio_split() for sector alignment
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 <satyat@...gle.com>
---
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
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