[SYCL][E2E] Destroy the Level Zero handles interop-direct.cpp owns

[uditagarwal97]

Bug

Adapters/level_zero/interop-direct.cpp creates a ze_context, a ze_command_queue and an immediate ze_command_list directly through the Level Zero API and never destroys any of them. All three are handed to SYCL with ext::oneapi::level_zero::ownership::keep, so destroying them is the test's own responsibility.

Under an ASan+UBSan runtime build the test fails with 20768 bytes leaked in 14 allocations (7 per RUN line, and there are two). Every frame is in the test's own main plus the vendor Level Zero driver — there is no SYCL or Unified Runtime frame anywhere in the report, so this is purely the test leaking:

ERROR: LeakSanitizer: detected memory leaks

Direct leak of 14672 byte(s) in 1 object(s) allocated from:
    #0 0x.. in operator new(unsigned long) (/usr/lib/llvm-18/lib/clang/18/lib/linux/libclang_rt.asan-x86_64.so+0x..)
    #1 0x..  (/rdrive/ref/opencl/runtime/linux/oclgpu/Kobuk-26.14.37833.4/libze_intel_gpu.so.1+0x..)
    #2 0x..  (/rdrive/ref/opencl/runtime/linux/oclgpu/Kobuk-26.14.37833.4/libze_intel_gpu.so.1+0x..)
    #3 0x..  (/rdrive/ref/opencl/runtime/linux/oclgpu/Kobuk-26.14.37833.4/libze_intel_gpu.so.1+0x..)
    #4 0x.. in zeCommandListCreateImmediate build-san/_deps/level-zero-loader-src/source/lib/ze_libapi.cpp:3420:12
    #5 0x.. in main (build-san/tools/sycl/test-e2e/Adapters/level_zero/Output/interop-direct.cpp.tmp.out+0x..)
    #6 0x.. in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
    #7 0x.. in __libc_start_main csu/../csu/libc-start.c:360:3
    #8 0x.. in _start (build-san/tools/sycl/test-e2e/Adapters/level_zero/Output/interop-direct.cpp.tmp.out+0x..)

Indirect leak of 4176 byte(s) in 1 object(s) allocated from:
    #0 0x.. in operator new(unsigned long) (/usr/lib/llvm-18/lib/clang/18/lib/linux/libclang_rt.asan-x86_64.so+0x..)
    #1 0x..  (/rdrive/ref/opencl/runtime/linux/oclgpu/Kobuk-26.14.37833.4/libze_intel_gpu.so.1+0x..)
    #2 0x..  (/rdrive/ref/opencl/runtime/linux/oclgpu/Kobuk-26.14.37833.4/libze_intel_gpu.so.1+0x..)
    #3 0x..  (/rdrive/ref/opencl/runtime/linux/oclgpu/Kobuk-26.14.37833.4/libze_intel_gpu.so.1+0x..)
    #4 0x..  (/rdrive/ref/opencl/runtime/linux/oclgpu/Kobuk-26.14.37833.4/libze_intel_gpu.so.1+0x..)
    #5 0x.. in zeCommandListCreateImmediate build-san/_deps/level-zero-loader-src/source/lib/ze_libapi.cpp:3420:12
    #6 0x.. in main (build-san/tools/sycl/test-e2e/Adapters/level_zero/Output/interop-direct.cpp.tmp.out+0x..)
    #7 0x.. in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
    #8 0x.. in __libc_start_main csu/../csu/libc-start.c:360:3
    #9 0x.. in _start (build-san/tools/sycl/test-e2e/Adapters/level_zero/Output/interop-direct.cpp.tmp.out+0x..)

Indirect leak of 1024 byte(s) in 1 object(s) allocated from:
    #0 0x.. in operator new(unsigned long) (/usr/lib/llvm-18/lib/clang/18/lib/linux/libclang_rt.asan-x86_64.so+0x..)
    #1 0x..  (/rdrive/ref/opencl/runtime/linux/oclgpu/Kobuk-26.14.37833.4/libze_intel_gpu.so.1+0x..)
    #2 0x..  (/rdrive/ref/opencl/runtime/linux/oclgpu/Kobuk-26.14.37833.4/libze_intel_gpu.so.1+0x..)
    #3 0x..  (/rdrive/ref/opencl/runtime/linux/oclgpu/Kobuk-26.14.37833.4/libze_intel_gpu.so.1+0x..)
    #4 0x..  (/rdrive/ref/opencl/runtime/linux/oclgpu/Kobuk-26.14.37833.4/libze_intel_gpu.so.1+0x..)
    #5 0x..  (/rdrive/ref/opencl/runtime/linux/oclgpu/Kobuk-26.14.37833.4/libze_intel_gpu.so.1+0x..)
... (11 more groups, same shape, from the second RUN line)

SUMMARY: AddressSanitizer: 20768 byte(s) leaked in 14 allocation(s).

Fix

Destroy the three handles the test owns.

Ordering matters: InteropContext, InteropQueueCQ and InteropQueueCL are function-scope SYCL objects, so their destructors run after the closing return. Calling zeContextDestroy just before return 0 would therefore tear the context down while SYCL objects still referencing it are alive. A small RAII holder declared before the SYCL interop objects is destroyed last, which gives the right order and also covers the eleven early return 1 paths without reindenting the body.

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Co-Authored-By: Claude Opus 5 (1M context) noreply@anthropic.com

[Copilot]

🟢 Approval recommended

The RAII lifetime ordering correctly prevents leaks without invalidating live SYCL interop objects.

Pull request overview

Adds RAII cleanup for Level Zero handles retained with ownership::keep.

Changes:

• Tracks context, command queue, and command list handles.
• Destroys handles safely after dependent SYCL objects, including early-return paths.

File summaries

File	Description
sycl/test-e2e/Adapters/level_zero/interop-direct.cpp	Adds ordered cleanup for test-owned Level Zero resources.

Review details

• Files reviewed: 1/1 changed files
• Comments generated: 0
• Review effort level: Balanced

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