Index of processing disabled slot out of range error

[GoogleCodeExporter]

What causes this error:

[error] [mod_pagespeed 1.3.25.4-2941 @20782] 
[0528/151540:ERROR:rewrite_context.cc(1297)] Index of processing disabled slot 
out of range:32

Im seeing a lot of these in the apache error logs. Is this something to worry 
about?

What version of the product are you using (please check X-Mod-Pagespeed
header)?
mod-pagespeed-stable-1.3.25.4-2941

On what operating system?
CloudLinux 5.9 32-bit

Which version of Apache?
httpd-2.2.3-76.el5_9.cloudlinux.2

Which MPM?
None

Original issue reported on code.google.com by stevencr...@gmail.com on 28 May 2013 at 10:26

[GoogleCodeExporter]

This is an error I haven't seen before, though it's easy to track down its 
source in our code.

At first glance I don't see how this can happen unless the cache is corrupted.  
But I'm going to try running some tests.  Is there anything unique about your 
installation you can share? 

Have you enabled memcached?  Are you using a tmpfs for your file-cache?

Are you running any experimental filters?

Original comment by jmara...@google.com on 29 May 2013 at 2:12

• Changed state: RequestClarification

[GoogleCodeExporter]

Actually let me broaden the question: can you supply your pagespeed.conf in 
full?

Original comment by jmara...@google.com on 29 May 2013 at 1:16

[GoogleCodeExporter]

I have restarted apache to no avail. Nothing unique, just the regular install, 
same as all the other servers, although I have not checked the other servers 
for this error. Memcache is not installed. I have not specified anything for 
the file-cache so its what ever the defaults are. Here is the attached 
pagespeed.conf, pretty much the default that comes with the install except for 
the insert_dns_prefetch filter

Original comment by stevencr...@gmail.com on 29 May 2013 at 1:29

Attachments:

• pagespeed.conf

[GoogleCodeExporter]

Do you still get this problem if you comment out the enabling of 
insert_dns_prefetch?

I don't have any reason to suspect that's related but I'm trying to figure out 
why I can't repro.

Original comment by jmara...@google.com on 29 May 2013 at 1:33

[GoogleCodeExporter]

I'm also curious why you added this:

    ModPagespeedLibrary 43 1o978_K0_LNE5_ystNklf http://www.modpagespeed.com/rewrite_javascript.js

Commenting that out would also be interested but I'd encourage you to perform 
those experiments one at a time so if either is at fault we know which one.

Original comment by jmara...@google.com on 29 May 2013 at 1:36

[GoogleCodeExporter]

I commented out the insert_dns_prefetch line and still have the error:

[error] [mod_pagespeed 1.3.25.4-2941 @4341] 
[0529/064328:ERROR:rewrite_context.cc(1297)] Index of processing disabled slot 
out of range:32

As far as the line ModPagespeedLibrary 43 1o978_K0_LNE5_ystNkl, that I didnt 
stick in there so it must have been in there from the rpm install or via yum 
update. I did comment it out as well and still see the error:

[Wed May 29 07:09:10 2013] [error] [mod_pagespeed 1.3.25.4-2941 @7068] 
[0529/070910:ERROR:rewrite_context.cc(1297)] Index of processing disabled slot 
out of range:32

I did see the error as well:
[warn] [mod_pagespeed 1.3.25.4-2941 @10281] Rewrite 
http://www.ecobutterfly.com/images/products/thumbs/agb20-2421.jpg failed while 
fetching 
http://www.ecobutterfly.com/images/products/thumbs/xagb20-2421.jpg.pagespeed.ic.
d7dLj7eLd2.jpg

Server has plenty of space too.

Original comment by stevencr...@gmail.com on 29 May 2013 at 2:10

[GoogleCodeExporter]

OK thanks -- you can restore those lines in your pagespeed.conf file.

Your error message pointed out a bug in our code which is now fixed in trunk: 
https://code.google.com/p/modpagespeed/source/detail?r=3077

We're still trying to work out whether there's another problem, since we never 
saw this problem in our load testing.

Can you supply the URL of an HTML page with mod_pagespeed enabled that points 
to that image?  I tried  http://www.ecobutterfly.com/ but that doesn't have MPS 
enabled.

Original comment by jmara...@google.com on 29 May 2013 at 3:17

[GoogleCodeExporter]

Hi,

http://www.ecobutterfly.com/ does have it enabled, just that we are re-writing 
the headers to X-AISO-Optimize: 1.3.25.4-2941

Original comment by stevencr...@gmail.com on 29 May 2013 at 3:59

[GoogleCodeExporter]

Fixed by r3077

Original comment by sligocki@google.com on 29 Oct 2014 at 7:57

• Changed state: Fixed