"zero size buf in output"

[double]

Hello,

We have strange messages in our error.log - but everything works.
We tried to re-produce this in a testing-environment - but we couldn't.

Thanks a lot
Sandy


2012/08/23 19:14:54 [alert] 17017#0: *1378690 zero size buf in output t:0
r:0 f:0 00000000007DD3A0 00000000007DD3A0-00000000007DE6DB 0000000000000000
0-0 while sending to client, client: 1.2.3.4, server: seite.com, request:
"GET /pathto/image.jpg HTTP/1.1", upstream:
"http://192.168.55.2:80/pathto/image.jpg", host: "www.seite.com", referrer:
"http://www.seite.com/"

2012/08/23 19:40:02 [alert] 17017#0: *1383588 zero size buf in output t:0
r:0 f:0 00000000007BB260 00000000007BB260-00000000007C5B75 0000000000000000
0-0 while sending to client, client: 1.2.3.4, server: seite.com, request:
"GET /pathto/image.jpg HTTP/1.1", upstream:
"http://192.168.55.2:80/pathto/image.jpg", host: "www.seite.com", referrer:
"http://www.seite.com/"

2012/08/23 19:49:47 [alert] 17016#0: *1385690 zero size buf in output t:0
r:0 f:0 0000000000725010 0000000000725010-00000000007272B6 0000000000000000
0-0 while sending to client, client: 1.2.3.4, server: seite.com, request:
"GET /pathto/image.jpg HTTP/1.1", upstream:
"http://192.168.55.2:80/pathto/image.jpg", host: "www.seite.com", referrer:
"http://www.seite.com/"

2012/08/23 19:49:48 [alert] 17016#0: *1385689 zero size buf in output t:0
r:0 f:0 0000000000725010 0000000000725010-000000000072A58C 0000000000000000
0-0 while sending to client, client: 1.2.3.4, server: seite.com, request:
"GET /pathto/image.jpg HTTP/1.1", upstream:
"http://192.168.55.2:80/pathto/image.jpg", host: "www.seite.com", referrer:
"http://www.seite.com/"

2012/08/23 19:49:48 [alert] 17016#0: *1385685 zero size buf in output t:0
r:0 f:0 0000000000847910 0000000000847910-0000000000851E0C 0000000000000000
0-0 while sending to client, client: 1.2.3.4, server: seite.com, request:
"GET /pathto/image.jpg HTTP/1.1", upstream:
"http://192.168.55.2:80/pathto/image.jpg", host: "www.seite.com", referrer:
"http://www.seite.com/"

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,230072,230072#msg-230072