Hi Magesh, That code is pretty old, could you try with master latest? There have been at least a couple of fixes to the bt since then (see [1] and [2]). And, as per assert that follows, the bts should be valid and therefore the bug is most probably in a different place.
On a separate note, the byte tracker is disabled by default, could you provide more details with respect to your use case? Regards, Florin [1] https://gerrit.fd.io/r/c/vpp/+/29623 [2] https://gerrit.fd.io/r/c/vpp/+/29428 > On Nov 22, 2021, at 6:49 AM, magesh parthasarathy <mageshmp2...@gmail.com> > wrote: > > We got a crash at the following lines of code in src/vnet/tcp/tcp_bt.c . The > code base is > vpp_1908 branch. > > 354 /* Find original tx sample and cache flags in case the sample > 355 * is freed or the pool moves */ > 356 bts = bt_lookup_seq (bt, start); > 357 bts_flags = bts->flags; > > when bt_lookup_seq returns NULL bts=NULL and accessing bts->flags causes the > system to crash. > There should be a NULL condition checking statement before line 357. > > I checked the master code base and even there the code still remains the same. > 359 /* Find original tx sample and cache flags in case the sample > 360 * is freed or the pool moves */ > 361 bts = bt_lookup_seq (bt, start); > 362 bts_flags = bts->flags; > > Can there be a fix suggested for this bug ? > > Regards > Magesh > Truminds software > > >
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