slot_table[slot_index] == nullptr - dynamic atexit destructor for 'WKS::gc_heap::mark_queue

[jkotas]

Hit in #73670. Full log https://dev.azure.com/dnceng/public/_build/results?buildId=1933526&view=ms.vss-test-web.build-test-results-tab&runId=49928682&resultId=101398&paneView=debug :

Assert failure(PID 7180 [0x00001c0c], Thread: 15564 [0x3ccc]): slot_table[slot_index] == nullptr

CORECLR! dynamic atexit destructor for 'WKS::gc_heap::mark_queue'' + 0x3C (0x00007ffe9bb0f40c)
CORECLR! <lambda_d121dba8a4adeaf3a9819e48611155df>::operator() + 0x13C (0x00007ffe9ba220cc) CORECLR! _crt_seh_guarded_call<int>::operator()<<lambda_6a47f4c8fd0152770a780fc1d70204eb>,<lambda_d121dba8a4adeaf3a9819e48611155df> &,<lambda_6aaa2265f5b6a89667e7d7630012e97a> > + 0x34 (0x00007ffe9ba217e4)

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Issue Details

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Hit in #73670. Full log https://dev.azure.com/dnceng/public/_build/results?buildId=1933526&view=ms.vss-test-web.build-test-results-tab&runId=49928682&resultId=101398&paneView=debug :

Assert failure(PID 7180 [0x00001c0c], Thread: 15564 [0x3ccc]): slot_table[slot_index] == nullptr

CORECLR! dynamic atexit destructor for 'WKS::gc_heap::mark_queue'' + 0x3C (0x00007ffe9bb0f40c)
CORECLR! <lambda_d121dba8a4adeaf3a9819e48611155df>::operator() + 0x13C (0x00007ffe9ba220cc) CORECLR! _crt_seh_guarded_call<int>::operator()<<lambda_6a47f4c8fd0152770a780fc1d70204eb>,<lambda_d121dba8a4adeaf3a9819e48611155df> &,<lambda_6aaa2265f5b6a89667e7d7630012e97a> > + 0x34 (0x00007ffe9ba217e4)

Author:	jkotas
Assignees:	-
Labels:	area-GC-coreclr, blocking-clean-ci
Milestone:	-

[jkotas]

This is regression introduced by #73375

Global static destructors can run while the other threads in the program are stopped at arbitrary place. It means that you cannot really do much interesting in them.

cc @PeterSolMS @Maoni0

[mangod9]

Fixed by #73761