2016-05-19 16:20, Yoni Gilad: > We have encountered a crash in virtio_xmit_pkts (specifically, in the call to > virtqueue_notify) when running DPDK in a multi-process setup. This is a > regression in DPDK 16.04.
Thanks a lot for reporting. 2 tips to improve such bug report: - Send it to the maintainer of virtio (and cc this list). You can find them in the MAINTAINERS file. I've cc'ed them. - Try to test early the release candidates to have it fixed before the bug is really released. > The culprit seems to be the field vtpci_ops in the virtio_hw structure. This > field is stored in shared memory, but points to a struct in the primary > process's address space. If the same struct was loaded in a different address > in the secondary process, it will lead to a crash or other issues when this > field is dereferenced there. The referenced virtio_pci_ops struct contains > function pointers, which can also be different in the secondary process.
