From: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Date: Thu, 26 Jan 2012 17:13:18 +0000 (+0200)
Subject: lib/mpi: added missing NULL check
X-Git-Tag: firefly_0821_release~3680^2~3596^2~3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=43b2c0aeaab2237996a72f9b9d7952ba82d56913;p=firefly-linux-kernel-4.4.55.git

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>
---

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. */