fjpanag opened a new issue, #1562:
URL: https://github.com/apache/nuttx-apps/issues/1562

   I constantly get the following assertion to fail:
   
   `mm/iob/iob_free.c:100`
   
   ```c
         /* Copy and decrement the total packet length, being careful to
          * do nothing too crazy.
          */
   
         if (iob->io_pktlen > iob->io_len)
           {
             /* Adjust packet length and move it to the next entry */
   
             next->io_pktlen = iob->io_pktlen - iob->io_len;
             DEBUGASSERT(next->io_pktlen >= next->io_len);
           }
   ```
   
   At least for me, the failure seems to be triggered while I am using a custom 
TCP server (mostly when connections are closed).
   
   I haven't been able to find any specific commit that is suspicious.
   
   Unfortunately, I am also not able to reproduce the issue reliably.  
   It randomly happens, sometimes almost immediately when connections are 
closed, sometimes everything seems fine for extended periods of time.
   
   I would appreciate any hint as to what to look for to fix this.


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