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  1. LWIP based TCP/IP
  2. PSLWIP-388

Unexpected use of released switch buffers

          Details

          • Account:
            SPC TCP_IP (SPCTCPIP)

            Description

            When a switch with fragmented ethernet buffers is used, it can happen, that lwIP still uses buffers which it has released before. The problem ist caused by wrong reference counting during zero copy buffer handling.
             

            The problem can be observed with Profinet Device firmwares for netX50/netX100/netX500 chipsets since these have a split-buffer switch.

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                is cloned by

                Change - PSLWIP-394 Backport fix for unexpected use of released switch buffers

                • Minor - Minor loss of function, or other problem where easy workaround is present.
                • Closed
                relates to

                Bug - A problem which impairs or prevents the functions of the product. PSPNSV4-1075 [netX500/netX50]: sometimes unexpected high cable delay is measured

                • Minor - Minor loss of function, or other problem where easy workaround is present.
                • Closed

                Change - PSLWIP-368 Upgrade LwIP stack to 2.1.2

                • Minor - Minor loss of function, or other problem where easy workaround is present.
                • Closed

                Change - PSPNCORE-464 Upgrade lwIP based IP stack to V5.0.5.0

                • Minor - Minor loss of function, or other problem where easy workaround is present.
                • Closed

                Change - PSPNSV4-1238 Upgrade LwIP based IP stack to V4.2.0.9

                • Minor - Minor loss of function, or other problem where easy workaround is present.
                • Closed
                mentioned in

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                        • Reporter:
                          AMesser Andreas Messer
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                          • Created:
                            Updated:
                            Resolved: