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gpu: nvgpu: vm: plausibility check for nvgpu_vm_bind_channel

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Ensure that the channel pointer passed to nvgpu_vm_bind_channel
is not NULL.
Update unit test accordingly.

JIRA NVGPU-4947.

Change-Id: I3f987ee9042066df83cc6101b20b4add3661fae8
Signed-off-by: Nicolas Benech <nbenech@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2291034
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
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This commit is contained in:
Nicolas Benech
2020-02-06 11:19:08 -05:00
committed by Alex Waterman
parent 16b80d2c5c
commit e8c02f121b
3 changed files with 17 additions and 1 deletions
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4
drivers/gpu/nvgpu/common/mm/vm.c
View File

@@ -148,6 +148,10 @@ int vm_aspace_id(struct vm_gk20a *vm)
int nvgpu_vm_bind_channel(struct vm_gk20a *vm, struct nvgpu_channel *ch)
{
if (ch == NULL) {
return -EINVAL;
}
nvgpu_log_fn(ch->g, " ");
nvgpu_vm_get(vm);

10
userspace/units/mm/vm/vm.c
View File

@@ -821,6 +821,15 @@ int test_vm_bind(struct unit_module *m, struct gk20a *g, void *__args)
vm = create_test_vm(m, g);
/* Error testing */
g->ops.mm.vm_bind_channel(vm, NULL);
if (channel->vm == vm) {
ret = UNIT_FAIL;
unit_err(m, "nvgpu_vm_bind_channel did not fail as expected.\n");
goto exit;
}
/* Succesfull call */
g->ops.mm.vm_bind_channel(vm, channel);
if (channel->vm != vm) {
@@ -831,6 +840,7 @@ int test_vm_bind(struct unit_module *m, struct gk20a *g, void *__args)
ret = UNIT_SUCCESS;
exit:
g->fifo.channel = NULL;
free(channel);
nvgpu_vm_put(vm);
return ret;

4
userspace/units/mm/vm/vm.h
View File

@@ -286,7 +286,7 @@ int test_nvgpu_vm_alloc_va(struct unit_module *m, struct gk20a *g,
*
* Description: This test targets the nvgpu_vm_bind_channel API.
*
* Test Type: Feature
* Test Type: Feature, Error injection
*
* Targets: gops_mm.vm_bind_channel, nvgpu_vm_bind_channel
*
@@ -299,6 +299,8 @@ int test_nvgpu_vm_alloc_va(struct unit_module *m, struct gk20a *g,
* - Address space size = 128GB
* - Kernel reserved space size = 4GB
* - Create an empty nvgpu_channel instance.
* - Call the nvgpu_vm_bind_channel with a NULL channel pointer and ensure it
* failed.
* - Call the nvgpu_vm_bind_channel API with the empty channel instance.
* - Ensure that after the call, the VM pointer in the nvgpu_channel structure
* points to the VM in use in the test.