iscDevCreate: Failed - add isc dev driver /dev/isc-dev.-191861913 - Bad file descriptor

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1

I wrote some tests of my pipeline which I want to run sequentially. In each test I create a pipeline and components and tear them down to ensure they always start clean and tear down successfully.

Running the tests individually seems to work fine. But when I run them sequentially I get the following error when attempting to bring up the pipeline again.

iscDevCreate: Failed - add isc dev driver /dev/isc-dev.-191861913 - Bad file descriptor
NvMediaISCDeviceCreate: Cannot create isc dev
nvmedia: ERROR: Init: Failed to create image sensor device
nvmedia isc: IscPwrCtrlIsExternalComm: 832: Need to call IscPwrCtrlInit() before calling this function
iscRootDevClose: Invalid platform
NvMediaISCRootDeviceDestroy: iscRootDevClose failed
Segmentation fault

Am I not shutting something down properly in the first test? Is it valid to be able to construct/destruct a pipeline multiple times in the same process?

My pipeline is using the NVMEDIA_IPP_COMPONENT_FILE_READER as a capture source.

2

Dear daden55vvg,
Could you share code snippet on how you are doing it?

3

Each test does something like the snippet below. The tests are running sequentially in the same process and push about 10 images through the file reader component.

NvMediaDevice *device_ = NvMediaDeviceCreate();
ext_img_device_ = ExtImgDevInit(params);
manager_ = NvMediaIPPManagerCreate(NVMEDIA_IPP_VERSION_INFO, device_);
pipeline_ = NvMediaIPPPipelineCreate(manager_);

// setup triggered mode.
bool triggered = NVMEDIA_TRUE;
constexpr size_t PROP_SIZE = 2;
NvMediaIPPPipelineProperty properties[PROP_SIZE];
properties[0].type = NVMEDIA_IPP_PIPELINE_PROPERTY_TRIGGER_BASED_CAPTURE;
properties[0].value = &triggered;
uint32_t frame_delay = 0;
// Set this to indicate take settings immediately, but didn't have any noticeable effect.
properties[1].type = NVMEDIA_IPP_PIPELINE_PROPERTY_SETTINGS_DELAY;
properties[1].value = &frame_delay;
CHECK_NVMEDIA_STATUS_OK(
    NvMediaIPPPipelineSetProperties(pipeline_, PROP_SIZE, properties));

components = file_reader, isp, acp, isc, output;
// Create Components
for each component { NvMediaIPPComponentCreateNew(...); }

// Attach Components
for each component { NvMediaIPPComponentAttach(...); }

// Process images
for (image in images) {
  queue_.push(image);
  // For some reason this triggers continuous reader call backs until
  // the pool is consumed.
  NvMediaIPPPipelineSingleCapture(...);
}

// Images are pushed to the reader callback image queue and processed in the ISP.
...

// When all images are done being processed cleanup
// Stop Pipeline
NvMediaIPPPipelineStop(...);

// Destroy Components
for each component { NvMediaIPPComponentDestroy(...); }

NvMediaIPPPipelineDestroy(pipeline_);
NvMediaIPPManagerDestroy(manager_);
ExtImgDevDeinit(ext_img_device_);
NvMediaDeviceDestroy(device_);
4

Any idea why I would get this?

5

Dear daden55vvg,
Below is definitely wrong
manager_ = NvMediaIPPManagerCreate(NVMEDIA_IPP_VERSION_INFO, ext_img_device_);
NvMediaManagerCreate takes a pointer to the NvMediaDevice, not ExtImgDevice.
Could you check testing it again after fixing this issue.

6

Sorry, that was a mistype as I was transcribing code. I am using NvMediaDevice and I have updated the code snipit above to reflect what the code is doing. The error still persists.

7

Dear daden55vvg,
Could you share the ExtImgDev parameters used in below line.

ext_img_device_ = ExtImgDevInit(params)