William found two bugs, when doing socket teardown within the same process. The first issue was an invalid munmap call, and the second one was an invalid XSKMAP cleanup. Both resulted in that the process kept references to the socket, which was not correctly cleaned up. When a new socket was created, the bind() call would fail, since the old socket was still lingering, refusing to give up the queue on the netdev. More details can be found in the individual commits. Thanks, Björn Björn Töpel (2): libbpf: fix invalid munmap call libbpf: proper XSKMAP cleanup tools/lib/bpf/xsk.c | 192 +++++++++++++++++++++++--------------------- 1 file changed, 100 insertions(+), 92 deletions(-) -- 2.20.1
