[Bug dynamic-link/28550] New: FAIL: tst-dso-ordering9_112-ecbda(GLIBC_TUNABLES=glibc.rtld.dynamic_sort=1) execution test

["hjl.tools at gmail dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=28550

            Bug ID: 28550
           Summary: FAIL:
                    tst-dso-ordering9_112-ecbda(GLIBC_TUNABLES=glibc.rtld.
                    dynamic_sort=1) execution test
           Product: glibc
           Version: 2.35
            Status: NEW
          Severity: normal
          Priority: P2
         Component: dynamic-link
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
                CC: cltang at codesourcery dot com
  Target Milestone: ---

The new dso-sort-tests-1 fails for different reasons at random on
many-core machine with load.  elf/Makefile has

# DSO sorting tests:
# The dso-ordering-test.py script generates testcase source files in $(objpfx),
# creating a $(objpfx)<testcase-name>-dir for each testcase, and creates a
# Makefile fragment to be included.
define include_dsosort_tests
$(objpfx)$(1).generated-makefile: $(1)
        $(PYTHON) $(..)scripts/dso-ordering-test.py \
        --description-file $$< --objpfx $(objpfx) --output-makefile $$@
include $(objpfx)$(1).generated-makefile
endef

# Generate from each testcase description file
ifeq (yes,$(have-tunables))
$(eval $(call include_dsosort_tests,dso-sort-tests-1.def))
$(eval $(call include_dsosort_tests,dso-sort-tests-2.def))
endif

I don't think it works well with parallel build on many-core machines.
I think it should be changed to use configure.ac or Makeconfig to generate
these makefile fragments.

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