Valgrind reported that match.wc was not initialized, as below: 1176: ofproto-dpif - fragment handling - actions
==21214== Conditional jump or move depends on uninitialised value(s) ==21214== at 0x4B77C1: odp_flow_key_from_flow__ (odp-util.c:6143) ==21214== by 0x46DB58: dp_netdev_upcall (dpif-netdev.c:6239) ==21214== by 0x4774A7: handle_packet_upcall (dpif-netdev.c:6608) ==21214== by 0x4774A7: fast_path_processing (dpif-netdev.c:6726) ==21214== by 0x47933C: dp_netdev_input__ (dpif-netdev.c:6814) ==21214== by 0x479AB8: dp_netdev_input (dpif-netdev.c:6852) ==21214== by 0x479AB8: dp_netdev_process_rxq_port (dpif-netdev.c:4287) ==21214== by 0x47A6A9: dpif_netdev_run (dpif-netdev.c:5264) ==21214== by 0x4324E7: type_run (ofproto-dpif.c:342) ==21214== by 0x41C5FE: ofproto_type_run (ofproto.c:1734) ==21214== by 0x40BAAC: bridge_run__ (bridge.c:2965) ==21214== by 0x410CF3: bridge_run (bridge.c:3029) ==21214== by 0x407614: main (ovs-vswitchd.c:127) ==21214== Uninitialised value was created by a stack allocation ==21214== at 0x4769C3: fast_path_processing (dpif-netdev.c:6672) 'match' is allocated on stack but its 'wc' is accessed in odp_flow_key_from_flow__ without proper initialization. This patch fixes it. Signed-off-by: Yifeng Sun <pkusunyif...@gmail.com> --- lib/dpif-netdev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/lib/dpif-netdev.c b/lib/dpif-netdev.c index a88a78f8a688..6be6e47ed127 100644 --- a/lib/dpif-netdev.c +++ b/lib/dpif-netdev.c @@ -6600,6 +6600,7 @@ handle_packet_upcall(struct dp_netdev_pmd_thread *pmd, match.tun_md.valid = false; miniflow_expand(&key->mf, &match.flow); + memset(&match.wc, 0, sizeof match.wc); ofpbuf_clear(actions); ofpbuf_clear(put_actions); -- 2.7.4 _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev