Hi Vipin, These crashes are specific to the testpmd primary and testpmd secondary application. Please check https://patches.dpdk.org/project/dpdk/patch/20250804113322.53650-1-14pwcse1...@uetpeshawar.edu.pk/ The details are provided over there.
Regards, Khadem On Mon, Aug 11, 2025 at 3:19 PM Varghese, Vipin <vipin.vargh...@amd.com> wrote: > [Public] > > Snipped > > > > Since somehow the email are split it is difficult to see the indexing > > > > > > > > > > > Caution: This message originated from an External Source. Use proper > > > > caution when opening attachments, clicking links, or responding. > > > > > > > > > > > > Hi Stephen, > > > > > > > > Many thanks for diving deeper into the issue and sharing the > insights. > > > > > > > > I agree. given that the primary tears down all the devices on exit, > > > > the secondary is left with dangling pointers and inconsistent state. > > > > > > Secondary if PMD should not be attempting to cleanup (especially for > ethdev_ptr > > shared from primary) I agree to that. > > > But should not be covered in library or PMD. While cleanup for other > > > needs to be done properly > > > > > > Without a mechanism to notify or synchronize that teardown, > > > > > > You already have health check added in the code for identify if primay > is still alive > > or not.. > > > There used to be MP thread spawned which actually piggy back the > > > communication. Is this broken? Can you please point to git > > > > There is no easy way to handle the case where primary crashes; leaving > > secondary process with pointers to dead data. > > Thank you for sharing, but as shared the other threads (this topic has 3), > the reason for the patch is because once the primary is dead it causes > secondary to crash (segment fault). > > As shared in earlier email at least till 22.11 LTS and 23.03 (as it was my > last testing with multi-process) I did not encounter these. > > @Khadem Ullah can you please share which version of DPDK you are noticing > this failure? > -- Engr. Khadem Ullah, Software Engineer, Dreambig Semiconductor Inc https://dreambigsemi.com/
