Re: [PATCH] dma-buf/dma_fence_array: remove unused functionality

[kernel test robot <oliver.sang@intel.com>]

Hello,

kernel test robot noticed "kernel-selftests.sync.sync_test.Testing_sync_framework.test_merge_stress_random_merge.fail" on:

commit: 26fa53bf886f191e90f8149224b10cda533e601d ("[PATCH] dma-buf/dma_fence_array: remove unused functionality")
url: https://github.com/intel-lab-lkp/linux/commits/Christian-K-nig/dma-buf-dma_fence_array-remove-unused-functionality/20260318-024706
base: https://gitlab.freedesktop.org/drm/misc/kernel.git drm-misc-next
patch link: https://lore.kernel.org/all/20260317145039.2418-1-christian.koenig@amd.com/
patch subject: [PATCH] dma-buf/dma_fence_array: remove unused functionality

in testcase: kernel-selftests
version: kernel-selftests-x86_64-c369299895a5-1_20260323
with following parameters:

	group: sync


config: x86_64-rhel-9.4-kselftests
compiler: gcc-14
test machine: 36 threads 1 sockets Intel(R) Core(TM) i9-9980XE CPU @ 3.00GHz (Skylake) with 32G memory

(please refer to attached dmesg/kmsg for entire log/backtrace)



If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202603261503.3e8f7afc-lkp@intel.com


TAP version 13
1..1
# timeout set to 300
# selftests: sync: sync_test
# TAP version 13
# 1..10
# # [RUN]	Testing sync framework
# ok 1 [RUN]	test_alloc_timeline
# ok 2 [RUN]	test_alloc_fence
# ok 3 [RUN]	test_alloc_fence_negative
# ok 4 [RUN]	test_fence_one_timeline_wait
# ok 5 [RUN]	test_fence_one_timeline_merge
# ok 6 [RUN]	test_fence_merge_same_fence
# ok 7 [RUN]	test_fence_multi_timeline_wait
# ok 8 [RUN]	test_stress_two_threads_shared_timeline
# ok 9 [RUN]	test_consumer_stress_multi_producer_single_consumer
# # [ERROR]	Failure waiting on fence until timeout
# not ok 10 [RUN]	test_merge_stress_random_merge
# Bail out! 1 out of 10 sync tests failed
# # Totals: pass:9 fail:1 xfail:0 xpass:0 skip:0 error:0
not ok 1 selftests: sync: sync_test # exit=1



The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260326/202603261503.3e8f7afc-lkp@intel.com



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https://github.com/intel/lkp-tests/wiki