Error generating kobject_prebuilt_hash.gperf after enabling userspace

[alexdr5398]

I am trying to enable userspace for my project. I am getting this error on one of the last steps related to some debug info.

[533/576] Creating signature of application
[534/576] Creating validation for zephyr.hex, storing to
[535/576] Creating validation for zephyr.hex, storing to
[537/576] Generating ../../zephyr/signed_by_mcuboot_and_b0_s0_image_update.bin
sign the payload
[538/576] Generating ../../zephyr/signed_by_mcuboot_and_b0_s0_image_signed.hex
sign the payload
[540/576] Generating ../../zephyr/signed_by_mcuboot_and_b0_s1_image_update.bin
sign the payload
[541/576] Generating ../../zephyr/signed_by_mcuboot_and_b0_s0_image_test_update.hex
sign the payload
[543/576] Generating ../../zephyr/signed_by_mcuboot_and_b0_s1_image_test_update.hex
sign the payload
[544/576] Generating ../../zephyr/signed_by_mcuboot_and_b0_s1_image_signed.hex
sign the payload
[546/576] Generating kobject_prebuilt_hash.gperf
FAILED: zephyr/kobject_prebuilt_hash.gperf /home/alex/mesomat/gateway/p100_gateway/build/zephyr/kobject_prebuilt_hash.gperf
cd /home/alex/mesomat/gateway/p100_gateway/build/zephyr && /home/alex/.venv/bin/python3 /home/alex/mesomat/p100_development/gateway/zephyr/scripts/build/gen_kobject_list.py --kernel /home/alex/mesomat/p100_development/gateway/p100_gateway/build/zephyr/zephyr_pre0.elf --gperf-output kobject_prebuilt_hash.gperf --include /home/alex/mesomat/p100_development/gateway/p100_gateway/build/zephyr/misc/generated/struct_tags.json
Traceback (most recent call last):
  File "/home/alex/mesomat/gateway/zephyr/scripts/build/gen_kobject_list.py", line 1097, in <module>
    main()
  File "/home/alex/mesomat/gateway/zephyr/scripts/build/gen_kobject_list.py", line 1064, in main
    objs = find_kobjects(elf, syms)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/alex/mesomat/gateway/zephyr/scripts/build/gen_kobject_list.py", line 609, in find_kobjects
    debug_die(
  File "/home/alex/mesomat/gateway/zephyr/scripts/build/gen_kobject_list.py", line 164, in debug_die
    fileinfo = files[die.attributes["DW_AT_decl_file"].value - 1]
                     ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
KeyError: 'DW_AT_decl_file'
ninja: build stopped: subcommand failed.

I can compile fine with all the same configs without userspace enabled. I added a print statement above the line generating the error that print the `die.attributes` dict and this was the result:

attributes: OrderedDict([('DW_AT_specification', AttributeValue(name='DW_AT_specification', form='DW_FORM_ref4', value=14836, raw_value=14836, offset=235167, indirection_length=0))])

[Simonr]

Hi

What version of the nRF Connect SDK are you using here? Can you also share some more details on what your sample is doing here before you try adding the userspace to your sample? And how exactly do you enable userspace in your application?

Best regards,

Simon

[alexdr5398]

Hi Simon,

It's NCS 2.1.0. The project is a gateway built on the Laird P100 running custom firmware that forwards data received from our Bluetooth sensors to our server through MQTT. It has mbedtls compiled in and CoAP/DTLS enabled as well.

Userspace is enabled simply using the `CONFIG_USERSPACE=y` config.

[Simonr]

Hi

We tried building the the lte_ble_gateway sample in NCS 2.1.0 with CONFIG_USERSPACE=y, and that built as expected. Can you share the prj.conf file of your project so we can confirm there aren't any configs that might be conflicting with the userspace config in your project.

Best regards,

Simon