2 files changed, 11 insertions, 0 deletions

diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c
index e91c16111ed3..f1ea0a064135 100644
--- a/crypto/crypto_user.c
+++ b/crypto/crypto_user.c
@@ -457,12 +457,20 @@ static int crypto_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 
         if ((type == (CRYPTO_MSG_GETALG - CRYPTO_MSG_BASE) &&
             (nlh->nlmsg_flags & NLM_F_DUMP))) {
+                struct crypto_alg *alg;
+                u16 dump_alloc = 0;
+
                 if (link->dump == NULL)
                         return -EINVAL;
+
+                list_for_each_entry(alg, &crypto_alg_list, cra_list)
+                        dump_alloc += CRYPTO_REPORT_MAXSIZE;
+
                 {
                         struct netlink_dump_control c = {
                                 .dump = link->dump,
                                 .done = link->done,
+                                .min_dump_alloc = dump_alloc,
                         };
                         return netlink_dump_start(crypto_nlsk, skb, nlh, &c);
                 }
diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h
index 532fb58f16bf..4abf2ea6a887 100644
--- a/include/linux/cryptouser.h
+++ b/include/linux/cryptouser.h
@@ -100,3 +100,6 @@ struct crypto_report_rng {
         char type[CRYPTO_MAX_NAME];
         unsigned int seedsize;
 };
+
+#define CRYPTO_REPORT_MAXSIZE (sizeof(struct crypto_user_alg) + \
+                               sizeof(struct crypto_report_blkcipher))