This is an alternative, more general fix compared with PATCH v1, and fixes style issues in v2.
The series fixes a segmentation fault in the OVS PMD thread when resynchronizing with QEMU after the guest application has been killed with SIGKILL (patch 1/2), The segmentation fault can be caused by the guest DPDK application, which is able this way to crash the OVS process on the host, see the backtrace in patch 1/2. Patch 2/2 is an additional improvement in the current error handling. --- Changes from v2: fix warnings from checkpatch. --- Changes from v1: * patch 1/2: instead of only fixing virtio_dev_tx_split, put the check for nr_vec == 0 inside desc_to_mbuf and mbuf_to_desc, so that in no case they attempt to read and dereference addresses from the buf_vec[] array when it does not contain any valid elements. --- For your review and comments, Claudio Claudio Fontana (2): vhost: check for nr_vec == 0 in desc_to_mbuf, mbuf_to_desc vhost: improve error handling in desc_to_mbuf lib/vhost/virtio_net.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) -- 2.26.2
