prealloc fails in heavy load conditions (obj_pmalloc_mt test fails)

[grom72]

ISSUE: prealloc fails in heavy load conditions

Environment Information

• PMDK package version(s): 1.12
• OS(es) version(s): all
• ndctl version(s): 71.1
• kernel version(s):
• compiler, libraries, packaging and other related tools version(s):

Please provide a reproduction of the bug:

PR #5568 introduces verification if realloc operation succeeds.

		ret = prealloc(a->pop, &a->r->offs[a->idx][i],
							REALLOC_SIZE, 0, 0);
		UT_ASSERTeq(ret, 0);

With this modification, the test permanently fails on PMem setup.
https://github.com/pmem/pmdk/actions/runs/4604839665/jobs/8440844480?pr=5568

How often bug is revealed: always

Actual behavior:

prealloc fails in heavy load condition

Expected behavior:

realloc shall not fail

Details

Additional information about Priority and Help Requested:

Are you willing to submit a pull request with a proposed change? (Yes, No)

Requested priority: Medium