Messages in this thread Patch in this message | | | From | Jiasheng Jiang <> | Subject | [PATCH] lib/mpi: potential dereference of null pointer | Date | Thu, 16 Dec 2021 15:35:48 +0800 |
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The return value of kcalloc() needs to be checked. To avoid dereference of null pointer in case of the failure of alloc.
Fixes: a8ea8bdd9df9 ("lib/mpi: Extend the MPI library") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> --- 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
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