From: Zizhuang Deng sunsetdzz@gmail.com
[ Upstream commit dd827abe296fe4249b2f8c9b95f72f814ea8348c ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- 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 47bc59edd4ff9..54fcc01564d9d 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);