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base repository: postgresql-cfbot/postgresql
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base: cf/6040~1
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head repository: postgresql-cfbot/postgresql
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compare: cf/6040
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  • 2 commits
  • 1 file changed
  • 2 contributors

Commits on Sep 22, 2025

  1. Try to handle torn reads of pg_control in sub postmaster processes. 

    The same problem was fixed in 63a5822,
but for frontends. Current commit is fixing this problem for cases
when pg_control file is read by fork/exec'd processes.

There can be race between process, that replays WAL on start and
update control file and other sub-processes that read control file
and were started with exec. As the result sub-processes can read
partially updated file with incorrect crc. The reason is that
LocalProcessControlFile don't acquire ControlFileLock and it can't
do it.

Current patch is just copy-paste of changes, applied for frontends,
with little adaptation.
    @manaldush
    manaldush authored and Commitfest Bot committed Sep 22, 2025
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  2. [CF 6040] v1 - Fix read/write races with pg_control file in case when… 

    … postgres was compiled with DEXEC_BACKEND option

This branch was automatically generated by a robot using patches from an
email thread registered at:

https://commitfest.postgresql.org/patch/6040

The branch will be overwritten each time a new patch version is posted to
the thread, and also periodically to check for bitrot caused by changes
on the master branch.

Patch(es): https://www.postgresql.org/message-id/[email protected]
Author(s): Maksim Melnikov
    Commitfest Bot committed Sep 22, 2025
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