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SubjectRe: [PATCH] lib/mpi: Add the return value check of kcalloc()
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On 12/30/21 3:03 PM, Zizhuang Deng wrote:
> Add the return value check of kcalloc() to avoid potential
> NULL ptr dereference.
>
> Signed-off-by: Zizhuang Deng <sunsetdzz@gmail.com>
> ---

Reviewed-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>

Best regards,
Tianjia

> 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);

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