[dm-devel] [PATCH] dm integrity: don't use drivers that have CRYPTO_ALG_ALLOCATES_MEMORY
Mikulas Patocka
mpatocka at redhat.com
Thu Oct 15 17:21:44 UTC 2020
This is follow-up of the patch cd74693870fb748d812867ba49af733d689a3604.
Don't use crypto drivers that have the flag CRYPTO_ALG_ALLOCATES_MEMORY
set. These drivers allocate memory and thus they are unsuitable for block
I/O processing.
Signed-off-by: Mikulas Patocka <mpatocka at redhat.com>
---
drivers/md/dm-integrity.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
Index: linux-2.6/drivers/md/dm-integrity.c
===================================================================
--- linux-2.6.orig/drivers/md/dm-integrity.c 2020-09-15 12:38:45.949985000 +0200
+++ linux-2.6/drivers/md/dm-integrity.c 2020-10-15 19:17:43.649999000 +0200
@@ -3462,7 +3462,7 @@ static int get_mac(struct crypto_shash *
int r;
if (a->alg_string) {
- *hash = crypto_alloc_shash(a->alg_string, 0, 0);
+ *hash = crypto_alloc_shash(a->alg_string, 0, CRYPTO_ALG_ALLOCATES_MEMORY);
if (IS_ERR(*hash)) {
*error = error_alg;
r = PTR_ERR(*hash);
@@ -3519,7 +3519,7 @@ static int create_journal(struct dm_inte
struct journal_completion comp;
comp.ic = ic;
- ic->journal_crypt = crypto_alloc_skcipher(ic->journal_crypt_alg.alg_string, 0, 0);
+ ic->journal_crypt = crypto_alloc_skcipher(ic->journal_crypt_alg.alg_string, 0, CRYPTO_ALG_ALLOCATES_MEMORY);
if (IS_ERR(ic->journal_crypt)) {
*error = "Invalid journal cipher";
r = PTR_ERR(ic->journal_crypt);
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