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From: bugzilla@dpdk.org
To: dev@dpdk.org
Subject: [dpdk-dev] [Bug 446] rte_lcore_index(-1) returns invalid data for non DPDK thread.
Date: Wed, 08 Apr 2020 20:16:06 +0000	[thread overview]
Message-ID: <bug-446-3@http.bugs.dpdk.org/> (raw)

https://bugs.dpdk.org/show_bug.cgi?id=446

            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 value 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 value
outside the cpu set, it should return -1 if run in non-DPDK thread as well.

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             reply	other threads:[~2020-04-08 20:16 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-08 20:16 bugzilla [this message]
2020-07-09  7:01 ` bugzilla

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