We noticed that iw hangs after running "station dump" or "mpath dump"
commands. The expected output is displayed before the hang. For
example:
# iw dev mesh station dump
...will display stations (if any) and then hang until iw is killed.
According to strace, iw is waiting on the netlink socket like this:
recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0,
groups=00000000},
msg_iov(1)=[{"\24\0\0\0\3\0\2\0C\256\2I\27\20\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096}], msg_controllen=0, msg_flags=0}, 0) = 20
recvmsg(3,
...which never returns. This seems to be a somewhat recent regression
but we haven't had a chance to look more closely into it so I'm
mentioning it here in case someone has an idea of what could have gone
wrong. Thanks,
-Andrey
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