Hi all:
I am using OVS-2.13 together with DPDK-19.11 and hw-offload turnd on. I
have found when I tried to capture pkts by using ovs-tcpdump, the main process
crash, I have found in log there is an assertion fail: "
|util(dp_netdev_flow_43)|EMER|lib/cmap.c:922: assertion cmap_replace__(impl,
old_node, new_node, hash, h1) || cmap_replace__(impl, old_node, new_node, hash,
h2) failed in cmap_replace() "
After tracing by gdb, I have found it may caused by reload_affected_pmds
mechanism: when we add or remove ports in datapath(e.g. capture pkts by
ovs-tcpdump script), the reload_affected_pmds should call flow_mark_flush and
then mark_to_flow_disassociate several times, for the second time that we call
mark_to_flow_disassociate, as the flow->mark has already been set by
0xffffffff, so the cmap_remove would emit an error.
I don't know how to avoid this error?
Thanks for your help !
Timo
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