[PATCH 0/2] Fixes for parallel XTS/LRW patch series

[PATCH 0/2] Fixes for parallel XTS/LRW patch series

[Jussi Kivilinna]

These patches fix bug in xts_crypt()/lrw_crypt() where nblocks is
not updated in the block walk loop.

This causes nblocks to be left at 0, after blkcipher_walk_done() call.
This leads 'do { ... } while (nblocks > 0)' loop to be run one extra
time with nblocks == 0 and at end of do-while loop nblocks gets updated
correctly.

---

Jussi Kivilinna (2):
      crypto: xts: fix nblocks not being updated in walk loop
      crypto: lrw: fix nblocks not being updated in walk loop


 crypto/lrw.c |    1 +
 crypto/xts.c |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)

[PATCH 1/2] crypto: xts: fix nblocks not being updated in walk loop

[Jussi Kivilinna]

In xts_crypt() function, nblocks should be updated after blkcipher_walk_done
call.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
---
 crypto/xts.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/crypto/xts.c b/crypto/xts.c
index 5681d66..ca1608f 100644
--- a/crypto/xts.c
+++ b/crypto/xts.c
@@ -229,6 +229,7 @@ first:
 		if (!nbytes)
 			break;
 
+		nblocks = min(nbytes / bsize, max_blks);
 		src = (be128 *)walk.src.virt.addr;
 		dst = (be128 *)walk.dst.virt.addr;
 	}

[PATCH 2/2] crypto: lrw: fix nblocks not being updated in walk loop

[Jussi Kivilinna]

In lrw_crypt() function, nblocks should be updated after blkcipher_walk_done
call.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
---
 crypto/lrw.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/crypto/lrw.c b/crypto/lrw.c
index 66c4d22..ba42acc 100644
--- a/crypto/lrw.c
+++ b/crypto/lrw.c
@@ -284,6 +284,7 @@ first:
 		if (!nbytes)
 			break;
 
+		nblocks = min(nbytes / bsize, max_blks);
 		src = (be128 *)walk.src.virt.addr;
 		dst = (be128 *)walk.dst.virt.addr;
 	}