# NginxPlus error: zero size buf in output

**URL:** <https://www.ruby-forum.com/t/nginxplus-error-zero-size-buf-in-output/243292>\
**Category:** NGINX\
**Created:** [September 8, 2015, 6:15pm UTC](https://www.ruby-forum.com/t/nginxplus-error-zero-size-buf-in-output/243292 "2015-09-08T18:15:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sadaf\_N](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\
**Post date:** [September 8, 2015, 6:15pm UTC](https://www.ruby-forum.com/t/nginxplus-error-zero-size-buf-in-output/243292/1 "2015-09-08T18:15:27Z")

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Hello, saw this logged in the error log in our NginxPlus (nginx/1.7.11  
(nginx-plus-extras-r6-p1) load balancer. Any ideas?

2015/09/08 14:31:02 [alert] 2399#0: \*452322 zero size buf in output t:0  
r:0  
f:1 0000000000000000 0000000000000000-0000000000000000 0000000002F51428  
0-0  
while sending request to upstream

Posted at Nginx Forum:

> **[NginxPlus error: zero size buf in output](https://forum.nginx.org/read.php?2,261516,261516#msg-261516)**
>
> Hello, saw this logged in the error log in our NginxPlus (nginx/1.7.11 (nginx-plus-extras-r6-p1) load balancer. Any ideas? 2015/09/08 14:31:02 \[alert\] 2399#0: \*452322 zero size buf in output t:0 r:0 f:1 0000000000000000...

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**Author:** ![justink101](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/a587f6/32.png) [@justink101](https://www.ruby-forum.com/u/justink101)\
**Post date:** [September 8, 2015, 8:14pm UTC](https://www.ruby-forum.com/t/nginxplus-error-zero-size-buf-in-output/243292/2 "2015-09-08T20:14:39Z")

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Hello!

On Tue, Sep 08, 2015 at 12:14:19PM -0400, justink101 wrote:

> Hello, saw this logged in the error log in our NginxPlus (nginx/1.7.11  
> (nginx-plus-extras-r6-p1) load balancer. Any ideas?
> 
> 2015/09/08 14:31:02 [alert] 2399#0: \*452322 zero size buf in output t:0 r:0  
> f:1 0000000000000000 0000000000000000-0000000000000000 0000000002F51428 0-0  
> while sending request to upstream

This message suggests there is a bug somewhere. In particular, if  
you use 3rd party modules (“extras” suggests this may be the  
case), it may be a bug in a 3rd party module. The message should  
contain additional information to help to identify the request  
triggered the bug.

Also, as you are using nginx-plus, you may want to contact  
technical support.

–  
Maxim D.

> **[nginx](http://nginx.org/)**