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gpu: nvgpu: Create unique share id

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This is fixing a race in address space identifier
creation by making atomic variable increment.

Bug 3684734

Change-Id: I864e8f61257569e35f926822c2a5260532d41360
Signed-off-by: Dinesh T <dt@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2742206
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com>
Reviewed-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-by: Richard Zhao <rizhao@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Dinesh T
2022-07-08 20:28:27 +00:00
committed by mobile promotions
parent eae4593343
commit b1d7c77d8e
8 changed files with 33 additions and 117 deletions
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4
drivers/gpu/nvgpu/os/linux/ioctl_as.c
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@@ -1,7 +1,7 @@
/*
* GK20A Address Spaces
*
* Copyright (c) 2011-2021, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2011-2022, 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,
@@ -457,7 +457,7 @@ long gk20a_as_dev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
int err = 0;
struct gk20a_as_share *as_share = filp->private_data;
struct gk20a *g = gk20a_from_as(as_share->as);
struct gk20a *g = as_share->g;
bool always_copy_to_user = false;
u8 buf[NVGPU_AS_IOCTL_MAX_ARG_SIZE];