https://bz.apache.org/bugzilla/show_bug.cgi?id=60671
Bug ID: 60671
Summary: "Event handle is invalid" when using mod_cache_disk
Product: Apache httpd-2
Version: 2.4.25
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: mod_cache_disk / mod_disk_cache
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 34696
--> https://bz.apache.org/bugzilla/attachment.cgi?id=34696&action=edit
ErrorLog
We are using Apache 2.4.25 (Windows) as a reverse proxy with caching.
I am using the following cache configuration:
CacheRoot cache
CacheDirLevels 5
CacheDirLength 3
CacheEnable disk /
The cache itself is working correctly. But after a period of time (1-x hours),
Apache is crashing/restarting.
The log messages in this case are:
[Thu Jan 26 13:58:34.304331 2017] [mpm_winnt:crit] [pid 8824:tid 324] (OS 6)The
handle is invalid. : AH00356: Child: WAIT_FAILED -- shutting down server
[Thu Jan 26 13:58:34.304331 2017] [mpm_winnt:crit] [pid 8824:tid 324] (OS 6)The
handle is invalid. : AH02644: Child: Event handle #0 (8) is invalid
[Thu Jan 26 13:59:06.336811 2017] [mpm_winnt:notice] [pid 8824:tid 324]
AH00362: Child: Waiting 90 more seconds for 1 worker threads to finish.
[Thu Jan 26 13:59:36.368238 2017] [mpm_winnt:notice] [pid 8824:tid 324]
AH00362: Child: Waiting 60 more seconds for 1 worker threads to finish.
[Thu Jan 26 14:00:06.396427 2017] [mpm_winnt:notice] [pid 8824:tid 324]
AH00362: Child: Waiting 30 more seconds for 1 worker threads to finish.
[Thu Jan 26 14:00:36.420727 2017] [mpm_winnt:notice] [pid 8824:tid 324]
AH00362: Child: Waiting 0 more seconds for 1 worker threads to finish.
[Thu Jan 26 14:00:36.520808 2017] [mpm_winnt:notice] [pid 8824:tid 324]
AH00363: Child: Terminating 1 threads that failed to exit.
[Thu Jan 26 14:00:36.520808 2017] [mpm_winnt:notice] [pid 8824:tid 324]
AH00364: Child: All worker threads have exited.
[Thu Jan 26 14:00:36.542289 2017] [mpm_winnt:notice] [pid 3636:tid 384]
AH00428: Parent: child process 8824 exited with status 0 -- Restarting.
[Thu Jan 26 14:00:36.831791 2017] [mpm_winnt:notice] [pid 3636:tid 384]
AH00455: Apache/2.4.25 (Win64) OpenSSL/1.0.2j configured -- resuming normal
operations
[Thu Jan 26 14:00:36.831791 2017] [mpm_winnt:notice] [pid 3636:tid 384]
AH00456: Apache Lounge VC14 Server built: Dec 17 2016 11:15:57
[Thu Jan 26 14:00:36.831791 2017] [core:notice] [pid 3636:tid 384] AH00094:
Command line: 'E:\\d3\\d.ecs http gateway\\webserver\\bin\\httpd.exe -d
E:/d3/d.ecs http gateway/webserver -d E:\\d3\\d.ecs http gateway\\webserver'
[Thu Jan 26 14:00:36.832768 2017] [mpm_winnt:notice] [pid 3636:tid 384]
AH00418: Parent: Created child process 2012
[Thu Jan 26 14:00:37.525523 2017] [mpm_winnt:notice] [pid 2012:tid 324]
AH00354: Child: Starting 250 worker threads.
(complete logfile attached)
When deactivating the cache, everything runs perfectly for weeks.
We made the following additional tests:
- When changing from disk cache to socache/shmcb ==> no crash.
- Since we use Windows, we tried 3 diffrent compilations from 2 distrubutors
(ApacheHaus, ApacheLounge VC11/VC14) ==> This makes no diffrence (crash)
- We tried the following config without success (config is recommended on
https://www.apachelounge.com/viewtopic.php?p=34683)
AcceptFilter http none
AcceptFilter https none
EnableSendfile off
EnableMMAP off
Let me know, if you need more information or log files. I always can reproduce
this issue in my test environment.
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