dh key: get rid of stack allocated array for zeroes

[linux-2.6-microblaze.git] / security / keys / dh.c

diff --git a/security/keys/dh.c b/security/keys/dh.c
index 9fecaea..f740382 100644 (file)
--- a/security/keys/dh.c
+++ b/security/keys/dh.c
@@ -162,8 +162,8 @@ static int kdf_ctr(struct kdf_sdesc *sdesc, const u8 *src, unsigned int slen,
                        goto err;
 
                if (zlen && h) {
-                       u8 tmpbuffer[h];
-                       size_t chunk = min_t(size_t, zlen, h);
+                       u8 tmpbuffer[32];
+                       size_t chunk = min_t(size_t, zlen, sizeof(tmpbuffer));
                        memset(tmpbuffer, 0, chunk);
 
                        do {
@@ -173,7 +173,7 @@ static int kdf_ctr(struct kdf_sdesc *sdesc, const u8 *src, unsigned int slen,
                                        goto err;
 
                                zlen -= chunk;
-                               chunk = min_t(size_t, zlen, h);
+                               chunk = min_t(size_t, zlen, sizeof(tmpbuffer));
                        } while (zlen);
                }