From: Zizhuang Deng <sunsetdzz@gmail.com>
To: tianjia.zhang@linux.alibaba.com, herbert@gondor.apana.org.au
Cc: linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
Zizhuang Deng <sunsetdzz@gmail.com>
Subject: [PATCH] lib/mpi: Add the return value check of kcalloc()
Date: Thu, 30 Dec 2021 15:03:31 +0800 [thread overview]
Message-ID: <20211230070331.1046343-1-sunsetdzz@gmail.com> (raw)
Add the return value check of kcalloc() to avoid potential
NULL ptr dereference.
Signed-off-by: Zizhuang Deng <sunsetdzz@gmail.com>
---
lib/mpi/mpi-mod.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/lib/mpi/mpi-mod.c b/lib/mpi/mpi-mod.c
index 47bc59edd4ff..54fcc01564d9 100644
--- a/lib/mpi/mpi-mod.c
+++ b/lib/mpi/mpi-mod.c
@@ -40,6 +40,8 @@ mpi_barrett_t mpi_barrett_init(MPI m, int copy)
mpi_normalize(m);
ctx = kcalloc(1, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return NULL;
if (copy) {
ctx->m = mpi_copy(m);
--
2.25.1
next reply other threads:[~2021-12-30 7:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-30 7:03 Zizhuang Deng [this message]
2021-12-30 7:26 ` [PATCH] lib/mpi: Add the return value check of kcalloc() Tianjia Zhang
2022-01-07 3:33 ` Herbert Xu
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