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authorZizhuang Deng <sunsetdzz@gmail.com>2021-12-30 15:03:31 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2022-01-07 14:30:01 +1100
commitdd827abe296fe4249b2f8c9b95f72f814ea8348c (patch)
treeb8deb1772b610a196d9709f827340daf4446a5d2 /lib
parent4cab5dfd15b77cde2b965bbf71a86876a42684da (diff)
lib/mpi: Add the return value check of kcalloc()
Add the return value check of kcalloc() to avoid potential NULL ptr dereference. Fixes: a8ea8bdd9df9 ("lib/mpi: Extend the MPI library") Signed-off-by: Zizhuang Deng <sunsetdzz@gmail.com> Reviewed-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'lib')
-rw-r--r--lib/mpi/mpi-mod.c2
1 files changed, 2 insertions, 0 deletions
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);