[CRIU] Error (sk-inet.c:153): In-flight connection (l) for 4bad5

[Pavel Emelyanov]

On 05/31/2016 06:27 PM, Adrian Reber wrote:
> I have a lxc container with a tomcat server and postgresql database in
> it. The tomcat server is running an test application which connects to
> the database, reads and modifies a field.
> 
> I can checkpoint and restart that container most of the times. If I am
> reloading the tomcat application in a while true; do loop with curl I
> sometimes get a dump failure like this:
> 
> 27112 fdinfo 50: pos: 0x               0 flags:             4002/0
> 	Searching for socket 4bad5 (family 10.6)
> Error (sk-inet.c:153): In-flight connection (l) for 4bad5
> ----------------------------------------
> Error (cr-dump.c:1312): Dump files (pid: 27112) failed with -1
> 
> I guess this is a TCP connection which is in a state that criu cannot
> handle. Is that correct?

Yes. This happens when a client sens SYN to server, server responds with
SYN-ACK, but the almost-new connection hasn't yet been accept()-ed by
server.

-- Pavel