Re: [bug] stuck localhost TCP connections, v2.6.26-rc3+

Ilpo Järvinen
2008-05-26T14:59:07Z

On Mon, 26 May 2008, Ingo Molnar wrote:

> there's a hung distcc task on the system, waiting for socket action
> forever:
>
> [root@europe ~]# strace -fp 19578
> Process 19578 attached - interrupt to quit
> select(5, NULL, [4], [4], {82, 90000} <unfinished ...>

Hmm, readfds is NULL isn't it?!? Are you sure you straced the right
process?

> disturbing that task via strace did not change the state of the socket -
> and that's not unexpected as it's a select(). [TCP state might be
> affected if strace impacted a recvmsg or a sendmsg wait directly.]

I fail to understand this paragraph due to excessive negation... :-)

--
i.