pCache is NULL, pInfo is 0x57e58c8, pReq is 0x57e5248, pPath is (nil).

[hp2]

From version 1.7.19, I notice that message appearing in the OLS error_log. What does it mean, and why is it there?
Thanks.

 

[sbmg18]

I have this same issue with version 1.7.19, error_log gets filled with such messages after upgrading to 1.7.19.

 

[Cold-Egg]

I will check on that and update here, thanks for the report.

 

[Cold-Egg]

Hi @hp2 and @sbmg18 , I tried a lot but no success to reproduce the issue. If it's still happening, could you create a ticket to support@litespeedtech.com for further check?

 

[hp2]

Which information do you need including in the ticket?

 

[Cold-Egg]

Like, how to generate that error, by visiting a specific page or any page? Does that error kee showing? Is that page served by the cache?

 

[hp2]

I don't know how to generate that error. I found them in the error log. Yes, the site is using Litespeed cache plugin for WordPress.
I compared the time in the error log and the access log of that domain, but the access log at that time slot only shows requests to CSS, JS and JPG file.

A specific page? No, I don't think so. At the above time slot, I only visited the homepage of that site. And I surf the site many times, no error message. That message appears only some times, not always.

Might be it's easier to find the reason if we can include ID of PHP process, like I asked here?

 

[sbmg18]

I'm not using Litespeed cache plugin and I still have those errors, so it doesn't seem to be related to caching, it seems to be related to HTTP2, QUIC, etc. and it happens randomly for different IP address. These are some more detailed error logs:

(I have changed the actual IP address with placeholders in below error logs)

2024-01-10 08:20:51.746467 [ERROR] [1497] [IP_ADDRESS_1:42920-Q:388554FC4153D169-28] pCache is NULL, pInfo is 0x1ddf798, pReq is 0x1ddf118, pPath is (nil).
2024-01-10 08:42:55.039016 [ERROR] [1497] [IP_ADDRESS_2:65126-Q:9E826B174934AD85-48] pCache is NULL, pInfo is 0x2136bd8, pReq is 0x2136558, pPath is (nil).
2024-01-10 08:50:46.872261 [ERROR] [1497] [IP_ADDRESS_3:42291-Q:B703D598DF18FD26-16] pCache is NULL, pInfo is 0x21baf78, pReq is 0x21ba8f8, pPath is (nil).
2024-01-10 09:51:30.313214 [ERROR] [1497] [IP_ADDRESS_4:12927:HTTP2-19] pCache is NULL, pInfo is 0x17be708, pReq is 0x17be088, pPath is (nil).
2024-01-10 09:56:54.525261 [ERROR] [1497] [IP_ADDRESS_5:62526-Q:0EA83EECC314FC1F-124] pCache is NULL, pInfo is 0x175e388, pReq is 0x175dd08, pPath is (nil).
2024-01-10 09:56:54.543639 [ERROR] [1497] [IP_ADDRESS_5:62526-Q:0EA83EECC314FC1F-128] pCache is NULL, pInfo is 0x175e388, pReq is 0x175dd08, pPath is (nil).
2024-01-10 09:56:55.606619 [ERROR] [1497] [IP_ADDRESS_5:62526-Q:0EA83EECC314FC1F-164] pCache is NULL, pInfo is 0x189f6c8, pReq is 0x189f048, pPath is (nil).
2024-01-10 09:56:55.606746 [ERROR] [1497] [IP_ADDRESS_5:62526-Q:0EA83EECC314FC1F-168] pCache is NULL, pInfo is 0x175e388, pReq is 0x175dd08, pPath is (nil).
2024-01-10 09:57:35.456811 [ERROR] [1497] [IP_ADDRESS_5:62526-Q:0EA83EECC314FC1F-524] pCache is NULL, pInfo is 0x189f6c8, pReq is 0x189f048, pPath is (nil).
2024-01-10 09:59:27.872796 [ERROR] [1497] [IP_ADDRESS_4:13090:HTTP2-13] pCache is NULL, pInfo is 0x1a1ca18, pReq is 0x1a1c398, pPath is (nil).
2024-01-10 09:59:42.155927 [ERROR] [1497] [IP_ADDRESS_4:13090:HTTP2-19] pCache is NULL, pInfo is 0x1a1ca18, pReq is 0x1a1c398, pPath is (nil).
2024-01-10 10:31:17.143679 [ERROR] [1497] [IP_ADDRESS_6:60562-Q:0A605F397A5ACA55-36] pCache is NULL, pInfo is 0x1800e98, pReq is 0x1800818, pPath is (nil).

I had already created a support ticket, they ask for temp root SSH which I'm unable to provide as the server has some sensitive data.

 

[Cold-Egg]

@sbmg18
I saw your ticket has been resolved, was it due to the cache module setup?

 

[sbmg18]

After upgrading to openlitespeed_1.7.19-2, the issue seems to be resolved as I don't see this error again.

Thanks!

 

[Colcol]

Was there any idea why these "pcache is NULL..." messages have appeared from 1.7.19-1? They started to appear on one of my WordPress sites that uses LS Cache after updating to 1.7.19-1, and still appear after updating to 1.7.19-2.

Should add in the error-log mix after 1.7.19 are various 'URI '/wp-content/uploads/filename.pdf/1000' refers to a static file with PATH_INFO [/1000].' messages, which refer to different PDFs on the website. These messages refer only to PDFs and occur at different times to the 'pcache is NULL...' messages. Any ideas?