回复：Fix missing initialization of delayChkptEnd

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发件人：蔡梦娟(玊于) <mengjuan.cmj@alibaba-inc.com>

发送时间：2023年6月5日(星期一) 19:44

收件人：pgsql-hackers <pgsql-hackers@lists.postgresql.org>

抄　送：robertmhaas <robertmhaas@gmail.com>

主　题：Fix missing initialization of delayChkptEnd

Hi, all

I got a coredump when testing with the REL_14_STABLE branch, which is as below:

I noticed that in commit 10520f4346876aad4941797c2255a21bdac74739, int delayChkpt has been changed back to bool delayChkpt + bool delayChkptEnd. However,  the initialization to delayChkptEnd is missed in function InitProcess. When autovacuum_proc1 is in RelationTruncate, the delayChkptEnd will be set as true. If autovacuum_proc1 receives a cancel signal and handles it at this time, autovacuum_proc1 will exit without reseting delayChkptEnd in its error handling process. After that, if autovacuum_proc2 reuses this PGPROC structure, the above error will occur.

I add a patch to fix this bug in the attachment,  hope you can check it.

Thanks & Best Regard