rte_malloc() faild in secondary process with dynamic memory mode

https://bugs.dpdk.org/show_bug.cgi?id=872

            Bug ID: 872
           Summary: rte_malloc() faild in secondary process with dynamic
                    memory mode
           Product: DPDK
           Version: 20.11
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: core
          Assignee: [email protected]
          Reporter: [email protected]

Target Milestone: ---

We have one primary dpdk process and 4 secondary processes, and 4 secondary processes will call rte_malloc() to allocate some memory and call rte_free() to release memory after process something.
1. if dpdk memory mode is dynamic, rte_malloc() failed will occur and 'EAL:
Request timed out' log was printed out.
2. if dpdk memory mode is legacy, it is normal without any issue.

Note: from current investigation, when this issue occurred, the new hugepage block was reserved and released from/to system.

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