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Date: Wed, 08 Apr 2020 20:16:06 +0000
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Subject: [dpdk-dev] [Bug 446] rte_lcore_index(-1) returns invalid data for
 non DPDK thread.
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https://bugs.dpdk.org/show_bug.cgi?id=3D446

            Bug ID: 446
           Summary: rte_lcore_index(-1) returns invalid data for non DPDK
                    thread.
           Product: DPDK
           Version: 20.11
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: core
          Assignee: dev@dpdk.org
          Reporter: stephen@networkplumber.org
  Target Milestone: ---

Calling rte_lcore_index() with -1 as lcore returns the relative index of the
current lcore in the cpuset.  But if called from a non-DPDK thread the valu=
e is
undefined. It ends up referencing outside lcore_config array and gets some
other value.  In our tests it got 253; but could be anything.

It is documented to return -1 on error. It does that if passed an lcore val=
ue
outside the cpu set, it should return -1 if run in non-DPDK thread as well.

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