crypto: testmgr - Fix DMA-API warning

With DMA-API debug enabled testmgr triggers a "DMA-API: device driver maps memory from stack" warning, when tested on a crypto HW accelerator.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index dc3cf35..75c78e6 100644 (file)
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -414,16 +414,18 @@ static int __test_aead(struct crypto_aead *tfm, int enc,
        void *input;
        void *output;
        void *assoc;
-       char iv[MAX_IVLEN];
+       char *iv;
        char *xbuf[XBUFSIZE];
        char *xoutbuf[XBUFSIZE];
        char *axbuf[XBUFSIZE];
 
+       iv = kzalloc(MAX_IVLEN, GFP_KERNEL);
+       if (!iv)
+               return ret;
        if (testmgr_alloc_buf(xbuf))
                goto out_noxbuf;
        if (testmgr_alloc_buf(axbuf))
                goto out_noaxbuf;
-
        if (diff_dst && testmgr_alloc_buf(xoutbuf))
                goto out_nooutbuf;
 
@@ -767,6 +769,7 @@ out_nooutbuf:
 out_noaxbuf:
        testmgr_free_buf(xbuf);
 out_noxbuf:
+       kfree(iv);
        return ret;
 }