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>

3 files changed, 8 insertions, 2 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);
 
diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
index 4f897b97..d24b8bf7 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
@@ -3473,6 +3473,8 @@ static int gr_gk20a_init_gr_config(struct gk20a *g, struct gr_gk20a *gr)
                 gr->sm_to_cluster = nvgpu_kzalloc(g, gr->gpc_count *
                                         gr->max_tpc_per_gpc_count *
                                         sm_per_tpc * sizeof(struct sm_info));
+                if (!gr->sm_to_cluster)
+                        goto clean_up;
         } else {
                 memset(gr->sm_to_cluster, 0, gr->gpc_count *
                                         gr->max_tpc_per_gpc_count *
diff --git a/drivers/gpu/nvgpu/os/linux/scale.c b/drivers/gpu/nvgpu/os/linux/scale.c
index ef7996e6..388e168d 100644
--- a/drivers/gpu/nvgpu/os/linux/scale.c
+++ b/drivers/gpu/nvgpu/os/linux/scale.c
@@ -1,7 +1,7 @@
 /*
  * gk20a clock scaling profile
  *
- * Copyright (c) 2013-2018, NVIDIA Corporation. All rights reserved.
+ * Copyright (c) 2013-2020, NVIDIA Corporation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -339,6 +339,8 @@ void gk20a_scale_init(struct device *dev)
                 return;
 
         profile = nvgpu_kzalloc(g, sizeof(*profile));
+        if (!profile)
+                return;
 
         profile->dev = dev;
         profile->dev_stat.busy = false;