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-rw-r--r--net/sctp/socket.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index a0e879bb202d..fd7ed9d46a48 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -5773,7 +5773,7 @@ int sctp_inet_listen(struct socket *sock, int backlog)
5773 goto out; 5773 goto out;
5774 5774
5775 /* Allocate HMAC for generating cookie. */ 5775 /* Allocate HMAC for generating cookie. */
5776 if (sctp_hmac_alg) { 5776 if (!sctp_sk(sk)->hmac && sctp_hmac_alg) {
5777 tfm = crypto_alloc_hash(sctp_hmac_alg, 0, CRYPTO_ALG_ASYNC); 5777 tfm = crypto_alloc_hash(sctp_hmac_alg, 0, CRYPTO_ALG_ASYNC);
5778 if (IS_ERR(tfm)) { 5778 if (IS_ERR(tfm)) {
5779 if (net_ratelimit()) { 5779 if (net_ratelimit()) {
@@ -5801,7 +5801,8 @@ int sctp_inet_listen(struct socket *sock, int backlog)
5801 goto cleanup; 5801 goto cleanup;
5802 5802
5803 /* Store away the transform reference. */ 5803 /* Store away the transform reference. */
5804 sctp_sk(sk)->hmac = tfm; 5804 if (!sctp_sk(sk)->hmac)
5805 sctp_sk(sk)->hmac = tfm;
5805out: 5806out:
5806 sctp_release_sock(sk); 5807 sctp_release_sock(sk);
5807 return err; 5808 return err;