Commit ab30b65f authored Mar 08, 2021 by Puranam V G Tejaswi

msm: kgsl: Return a valid entry in case of secure GPU address



Currently kgsl_sharedmem_find always returns NULL in case of a secure GPU
address as the address would not be part of process pagetable. This can
lead to not freeing secure memory as part of kgsl_ioctl_sharedmem_free.
Fix this by also checking if the address lies in the secure pagetable
range before returning NULL.

Change-Id: I79b5686a8fcaf580fc79b8f528b91c987f9138a9
Signed-off-by: Puranam V G Tejaswi <pvgtejas@codeaurora.org>

parent 9efe49ec

drivers/gpu/msm/kgsl.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -1200,7 +1200,9 @@ kgsl_sharedmem_find(struct kgsl_process_private *private, uint64_t gpuaddr)
		if (!private)
		return NULL;

		if (!kgsl_mmu_gpuaddr_in_range(private->pagetable, gpuaddr))
		if (!kgsl_mmu_gpuaddr_in_range(private->pagetable, gpuaddr) &&
		!kgsl_mmu_gpuaddr_in_range(
		private->pagetable->mmu->securepagetable, gpuaddr))
		return NULL;

		spin_lock(&private->mem_lock);