6.14-stable review patch. If anyone has any objections, please let me know.
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From: Srinivasan Shanmugam srinivasan.shanmugam@amd.com
[ Upstream commit 2b04d04de956b44cc140d45cf8ebccfb378ce3bf ]
In the kfd_process_device_init_vm function, a valid error code is now returned when the associated Process Address Space ID (PASID) is not present.
If the address space virtual memory (avm) does not have an associated PASID, the function sets the ret variable to -EINVAL before proceeding to the error handling section. This ensures that the calling function, such as kfd_ioctl_acquire_vm, can appropriately handle the error, thereby preventing any issues during virtual memory initialization.
Fixes the below: drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:1694 kfd_process_device_init_vm() warn: missing error code 'ret'
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c 1647 int kfd_process_device_init_vm(struct kfd_process_device *pdd, 1648 struct file *drm_file) 1649 { ... 1690 1691 if (unlikely(!avm->pasid)) { 1692 dev_warn(pdd->dev->adev->dev, "WARN: vm %p has no pasid associated", 1693 avm); --> 1694 goto err_get_pasid;
ret = -EINVAL?
1695 }
Fixes: 8544374c0f82 ("drm/amdkfd: Have kfd driver use same PASID values from graphic driver") Reported by: Dan Carpenter dan.carpenter@linaro.org Cc: Xiaogang Chen xiaogang.chen@amd.com Cc: Felix Kuehling felix.kuehling@amd.com Cc: Christian König christian.koenig@amd.com Cc: Alex Deucher alexander.deucher@amd.com Signed-off-by: Srinivasan Shanmugam srinivasan.shanmugam@amd.com Reviewed-by: Felix Kuehling felix.kuehling@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index a7e0a16dac47b..3f411922534b3 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -1711,6 +1711,7 @@ int kfd_process_device_init_vm(struct kfd_process_device *pdd, if (unlikely(!avm->pasid)) { dev_warn(pdd->dev->adev->dev, "WARN: vm %p has no pasid associated", avm); + ret = -EINVAL; goto err_get_pasid; }