From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 7 Dec 2011 11:58:26 +0000 (+0200)
Subject: mpi/mpi-mpow: NULL dereference on allocation failure
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=fe0e94c5a7e5335ba0d200e7d3e26e9f80cda4b1;p=linux-beck.git

mpi/mpi-mpow: NULL dereference on allocation failure

We can't call mpi_free() on the elements if the first kzalloc() fails.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: James Morris <jmorris@namei.org>
---

diff --git a/lib/mpi/mpi-mpow.c b/lib/mpi/mpi-mpow.c
index 4cc75933c5a7..7328d0d6c748 100644
--- a/lib/mpi/mpi-mpow.c
+++ b/lib/mpi/mpi-mpow.c
@@ -73,7 +73,7 @@ int mpi_mulpowm(MPI res, MPI *basearray, MPI *exparray, MPI m)
 
 	G = kzalloc((1 << k) * sizeof *G, GFP_KERNEL);
 	if (!G)
-		goto nomem;
+		goto err_out;
 
 	/* and calculate */
 	tmp = mpi_alloc(mpi_get_nlimbs(m) + 1);
@@ -129,5 +129,6 @@ nomem:
 	for (i = 0; i < (1 << k); i++)
 		mpi_free(G[i]);
 	kfree(G);
+err_out:
 	return rc;
 }