From 43b2c0aeaab2237996a72f9b9d7952ba82d56913 Mon Sep 17 00:00:00 2001
From: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Date: Thu, 26 Jan 2012 19:13:18 +0200
Subject: [PATCH] lib/mpi: added missing NULL check
Added missing NULL check after mpi_alloc_limb_space().
Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Reviewed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
---
lib/mpi/mpi-div.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/lib/mpi/mpi-div.c b/lib/mpi/mpi-div.c
index 8a45717bd001..f68cbbb4d4a4 100644
--- a/lib/mpi/mpi-div.c
+++ b/lib/mpi/mpi-div.c
@@ -210,6 +210,8 @@ int mpi_tdiv_qr(MPI quot, MPI rem, MPI num, MPI den)
* numerator would be gradually overwritten by the quotient limbs. */
if (qp == np) { /* Copy NP object to temporary space. */
np = marker[markidx++] = mpi_alloc_limb_space(nsize);
+ if (!np)
+ goto nomem;
MPN_COPY(np, qp, nsize);
}
} else /* Put quotient at top of remainder. */