Child panics on OpenSolaris

Nils Goroll slink at
Sun Feb 14 19:11:30 CET 2010

Hi Poul-Henning and all,

> If I had implemented the hack I suspect Solaris contains, I would
> have found some bit somewhere, to make sure the errno would be the
> correct, documented and expected:
> 	#define ECONNRESET      54     /* Connection reset by peer */
> Somebody with a Solaris service contract, if such things still
> exist, should report this as a bug to them...
> I will add a workaround to Varnish, with a suitable sarcastic
> commentary...

I can't tell at this point if this is a Solaris or a Varnish issue, but I can 
tell for sure that I have never seen it on 2.0.3 with a couple of additional 
fixes running a *high* traffic site. The main difference between this version 
and trunk with respect to TCP is, IIUC, the lack of tcp_linger. Maybe that gives 
a clue on where to look, but on the other hand this might be absolutely the 
wrong war to go.

Regarding Solaris, this piece of code here

documents the errnos that SHOULD be set upon reception of an RST depending on 
various conditions.

Regarding sarcasm: Please add the comment when the current hypothesis proves 
true, but my experience is that in many cases the Solaris guys are quite fuzzy 
about documentation.

I volunteer to get this fixed in OpenSolaris should it turn out that the issue 
is root caused there.


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