gpu: nvgpu: add checks for kzalloc() allocations

Check kzalloc() allocations for failures and return
an error if an allocation fails.

Bug 2279948

Change-Id: I8a2c3b84904da897ad6118900c11489c8656c20f
Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2020123
(cherry picked from commit fadd0014da39cb9498472494e52590db4b0bd7b9)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2298066
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/clk/clk_prog.c b/drivers/gpu/nvgpu/clk/clk_prog.c
index e5c2a295..9d44d6d4 100644
--- a/drivers/gpu/nvgpu/clk/clk_prog.c
+++ b/drivers/gpu/nvgpu/clk/clk_prog.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2018, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -628,6 +628,8 @@ static int clk_prog_construct_1x_master(struct gk20a *g,
 
         pclkprog->p_vf_entries = (struct ctrl_clk_clk_prog_1x_master_vf_entry *)
                 nvgpu_kzalloc(g, vfsize);
+        if (!pclkprog->p_vf_entries)
+                return -ENOMEM;
 
         memcpy(pclkprog->p_vf_entries, ptmpprog->p_vf_entries, vfsize);