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* [dpdk-dev] [Bug 501] igb: segfault in rte_eth_tx_done_cleanup() when using advanced descriptors
@ 2020-07-05 11:23 bugzilla
  0 siblings, 0 replies; only message in thread
From: bugzilla @ 2020-07-05 11:23 UTC (permalink / raw)
  To: dev

https://bugs.dpdk.org/show_bug.cgi?id=501

            Bug ID: 501
           Summary: igb: segfault in rte_eth_tx_done_cleanup() when using
                    advanced descriptors
           Product: DPDK
           Version: 19.05
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: ethdev
          Assignee: dev@dpdk.org
          Reporter: pawelwod@gmail.com
  Target Milestone: ---

For advanced descriptors the eth_igb_xmit_pkts() function is using one
additional TX ring descriptor entry but is not setting txe->mbuf. This gives
segfault in igb_tx_done_cleanup() as sw_ring[tx_id].mbuf is not checked before
calling  rte_pktmbuf_free_seg().

Driver code did't changed much since v19.05 so I think that the bug is still
present.

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2020-07-05 11:23 [dpdk-dev] [Bug 501] igb: segfault in rte_eth_tx_done_cleanup() when using advanced descriptors bugzilla

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