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video: tegra: nvmap: Fix kmemleak issues

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While unloading the nvmap module, the memory allocated by following
functions should be freed, otherwise it results into kmemleak:
- nvmap_dma_init_coherent_memory
- dev_set_name

Bug 3860404

Change-Id: I7cd187c259ad2ceca0262154c0fb7fe8aedcfac8
Signed-off-by: Ketan Patil <ketanp@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2844474
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Ketan Patil
2023-01-18 10:49:28 +00:00
committed by Laxman Dewangan
parent 76d402ab77
commit afb7cce70c
3 changed files with 22 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/video/tegra/nvmap/nvmap_heap.c
View File

@@ -3,7 +3,7 @@
*
* GPU heap allocator.
*
* Copyright (c) 2011-2022, NVIDIA Corporation. All rights reserved.
* Copyright (c) 2011-2023, 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,
@@ -535,6 +535,8 @@ struct nvmap_heap *nvmap_heap_create(struct device *parent,
co->name, (void *)(uintptr_t)base, len/1024);
return h;
fail:
if (h->dma_dev->kobj.name)
kfree_const(h->dma_dev->kobj.name);
kfree(h);
return NULL;
}
@@ -543,6 +545,17 @@ fail:
void nvmap_heap_destroy(struct nvmap_heap *heap)
{
WARN_ON(!list_empty(&heap->all_list));
if (heap->dma_dev->kobj.name)
kfree_const(heap->dma_dev->kobj.name);
if (heap->is_ivm)
kfree(heap->name);
#ifdef NVMAP_LOADABLE_MODULE
nvmap_dma_release_coherent_memory((struct dma_coherent_mem_replica *)
heap->dma_dev->dma_mem);
#endif /* NVMAP_LOADABLE_MODULE */
while (!list_empty(&heap->all_list)) {
struct list_block *l;
l = list_first_entry(&heap->all_list, struct list_block,

12
drivers/video/tegra/nvmap/nvmap_init.c
View File

@@ -576,7 +576,7 @@ void nvmap_dma_mark_declared_memory_unoccupied(struct device *dev,
spin_unlock_irqrestore(&mem->spinlock, flags);
}
static void nvmap_dma_release_coherent_memory(struct dma_coherent_mem_replica *mem)
void nvmap_dma_release_coherent_memory(struct dma_coherent_mem_replica *mem)
{
if (!mem)
return;
@@ -727,15 +727,9 @@ static int __init nvmap_co_device_init(struct reserved_mem *rmem,
return err;
}
static void nvmap_co_device_release(struct reserved_mem *rmem,struct device *dev)
static void nvmap_co_device_release(struct reserved_mem *rmem, struct device *dev)
{
struct nvmap_platform_carveout *co = rmem->priv;
if (!co)
return;
if (co->usage_mask == NVMAP_HEAP_CARVEOUT_IVM)
kfree(co->name);
return;
}
static const struct reserved_mem_ops nvmap_co_ops = {

6
drivers/video/tegra/nvmap/nvmap_priv.h
View File

@@ -3,7 +3,7 @@
*
* GPU memory management driver for Tegra
*
* Copyright (c) 2009-2022, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2009-2023, 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,
@@ -926,4 +926,8 @@ extern void __dma_map_area(const void *cpu_va, size_t size, int dir);
int nvmap_assign_pages_to_handle(struct nvmap_client *client,
struct nvmap_handle **hs, struct nvmap_handle *h,
struct handles_range *rng);
#ifdef NVMAP_LOADABLE_MODULE
void nvmap_dma_release_coherent_memory(struct dma_coherent_mem_replica *mem);
#endif /* NVMAP_LOADABLE_MODULE */
#endif /* __VIDEO_TEGRA_NVMAP_NVMAP_H */