[PATCH] blk-crypto: use BLK_STS_INVAL for alignment errors

[Carlos Llamas]

Make __blk_crypto_bio_prep() propagate BLK_STS_INVAL when IO segments
fail the data unit alignment check.

This was flagged by an LTP test that expects EINVAL when performing an
O_DIRECT read with a misaligned buffer [1].

Cc: Eric Biggers <ebiggers@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Link: https://lore.kernel.org/all/aP-c5gPjrpsn0vJA@xxxxxxxxxx/ [1]
Signed-off-by: Carlos Llamas <cmllamas@xxxxxxxxxx>
---
 block/blk-crypto.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/blk-crypto.c b/block/blk-crypto.c
index 4b1ad84d1b5a..3e7bf1974cbd 100644
--- a/block/blk-crypto.c
+++ b/block/blk-crypto.c
@@ -292,7 +292,7 @@ bool __blk_crypto_bio_prep(struct bio **bio_ptr)
 	}
 
 	if (!bio_crypt_check_alignment(bio)) {
-		bio->bi_status = BLK_STS_IOERR;
+		bio->bi_status = BLK_STS_INVAL;
 		goto fail;
 	}
 
-- 
2.51.1.851.g4ebd6896fd-goog