Re: [PATCH net v3 2/3] selftest/bpf: Add test for AF_VSOCK connect() racing sockmap update

[Paolo Abeni]

On 3/16/25 11:45 PM, Michal Luczaj wrote:
> Racing signal-interrupted connect() and sockmap update may result in an
> unconnected (and missing vsock transport) socket in a sockmap.
> 
> Test spends 2 seconds attempting to reach WARN_ON_ONCE().
> 
> connect
>   / state = SS_CONNECTED /
>                                 sock_map_update_elem
>   if signal_pending
>     state = SS_UNCONNECTED
> 
> connect
>   transport = NULL
>                                 vsock_bpf_recvmsg
>                                   WARN_ON_ONCE(!vsk->transport)
> 
> Signed-off-by: Michal Luczaj <mhal@xxxxxxx>

This is apparently causing some bpf self-test failure. (Timeout? the
self-test failure output is not clear to me.)

Could you please have a look?

Thanks!

Paolo