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>

1 files changed, 5 insertions, 2 deletions

diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index dc3cf3535ef0..75c78e6b1a26 100644
--- 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;
 }