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[Bug 62308] New: Apache crashes after graceful restart with AH02599: slotmem (failed size check)


            Bug ID: 62308
           Summary: Apache crashes after graceful restart with AH02599:
                    slotmem (failed size check)
           Product: Apache httpd-2
           Version: 2.4.33
          Hardware: PC
            Status: NEW
          Severity: regression
          Priority: P2
         Component: mod_proxy_balancer
          Assignee: bugs@xxxxxxxxxxxxxxxx
          Reporter: dnie@xxxxxxxxxx
  Target Milestone: ---

Created attachment 35878
  --> https://bz.apache.org/bugzilla/attachment.cgi?id=35878&action=edit
logfile with configuration change example

After updating from 2.4.27 to 2.4.33, we get a crash when doing a graceful
restart after modifying the mod_proxy/mod_proxy_balancer configuration in the
We are modifying the configuration files dynamicaly when our infrastructure
changes. After this, we do a graceful restart using the following Windows
command: httpd.exe -k restart
This worked fine with 2.4.27 and below. 
With 2.4.33 we get the following message:
AH02599: existing shared memory for C:/Apache24/temp/slotmem-shm-p17ffdef3.shm
could not be used (failed size check)

I've added a Apache logfile with an example of configuration change that causes
this issue

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