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Testing fails with segmentation fault #265
Description
OS: Ubuntu 24.04, freshly provisioned
Hardware: i7-1185G7, i9-12900 (reproduced on both)
Level Zero version: 1.19.2
Setup:
I am working to get the level-zero version in Ubuntu bumped to 1.19.2, which is why I'm installing from a PPA
sudo apt install -y build-essential cmake
sudo add-apt-repository ppa:mckeesh/testing
sudo apt -y update
sudo apt install libze1=1.19.2-0ubuntu1
git clone https://github.com/oneapi-src/level-zero
cd level-zero/
git checkout v1.19.2
mkdir build
cd build/
cmake -DBUILD_L0_LOADER_TESTS=yes ..
make -j`nproc`
./bin/tests
Result:
Running main() from /home/ubuntu/level-zero/build/_deps/googletest-src/googletest/src/gtest_main.cc
[==========] Running 15 tests from 3 test suites.
[----------] Global test environment set-up.
[----------] 1 test from LoaderAPI
[ RUN ] LoaderAPI.GivenLevelZeroLoaderPresentWhenCallingzeGetLoaderVersionsAPIThenValidVersionIsReturned
/home/ubuntu/level-zero/test/loader_api.cpp:26: Failure
Expected equality of these values:
ZE_RESULT_SUCCESS
Which is: 0
zeInit(0)
Which is: 2013265921
Found 1 versions
component.component_name: loader
component.component_lib_version.major: 1
component.spec_version: 65548
component.component_lib_name: loader
[ FAILED ] LoaderAPI.GivenLevelZeroLoaderPresentWhenCallingzeGetLoaderVersionsAPIThenValidVersionIsReturned (0 ms)
[----------] 1 test from LoaderAPI (0 ms total)
[----------] 11 tests from LoaderInit
[ RUN ] LoaderInit.GivenLevelZeroLoaderPresentWhenCallingZeInitDriversWithTypesUnsupportedWithFailureThenSupportedTypesThenSuccessReturned
Segmentation fault (core dumped)
Activity
rwmcguir commentedon Jan 25, 2025
For Reference: https://dgpu-docs.intel.com/driver/client/overview.html
View the section on Ubuntu 24.04
Two different things happening here:
Error code 2013265921d is ZE_RESULT_ERROR_UNINITIALIZED = 0x78000001..
(
level-zero/include/ze_api.h
Line 217 in 1c0320b
This indicates the L0 Loader cannot find a working Intel(R) GPU or NPU driver in the system, or those drivers failed to find a valid device to attach to, or are you running on a system with that didn't load a kernel driver. I see you posted the CPUs, both of which have valid HW, so this isn't the issue but are the KMD drivers actually running and is the user mode driver installed. )
First check to see if you've got a User Mode Driver installed and re-test
$ sudo apt install libze-intel-gpu1
( I am assuming your PPA has this package, if not install the one Intel is hosting )
If that doesn't work, check your dmesg to ensure that an Intel GPU is being loaded during boot with an i915.ko (potentially also xekmd.ko if you've got anything newer in a discrete slot).
The segfault, clearly shouldn't happen, but is likely a error induced by missing drivers.
We should address the segfault within the L0 Loader to fix it
mckees commentedon Feb 6, 2025
Hmm, interesting. I tried moving to Ubuntu 24.10 since we have been working more on that and have had validation teams check our stack. Here's what I'm seeing now:
mckees commentedon Feb 6, 2025
Showing the same tests as before, I'm seeing more tests run after installing an updated libze-intel-gpu1 version, but there's still the segfaulting and uninitialized issues"
mckees commentedon Feb 7, 2025
Alright, I did 2 things to improve my situation:
/usr/lib/x86_64-linux-gnu/libze_intel_vpu.so.1/usr/lib/x86_64-linux-gnu/libze_intel_vpu.so.1After that, the tests seemed to be getting stuck, so I did some debugging and found that it was hanging on a call to zeCommandQueueSynchronize. I made the following change to get past that by reducing the timeout:
From there, I was able to get through all the tests on i9-12900.
However, on Core Ultra 7 268V, I'm still getting a test hang here in ze_libapi.cpp during the test
LoaderValidation.GivenLevelZeroLoaderPresentWhenCallingzeCommandListAppendMemoryCopyWithCircularDependencyOnEventsThenValidationLayerPrintsWarningOfDeadlock: