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help / color / mirror / Atom feedFrom: Masahiko Sawada <[email protected]>
To: [email protected]
Subject: pgsql: Fix race condition in XLogLogicalInfo and ProcSignal initializat
Date: Thu, 07 May 2026 17:10:19 +0000
Message-ID: <[email protected]> (raw)
Fix race condition in XLogLogicalInfo and ProcSignal initialization.
Previously, InitializeProcessXLogLogicalInfo() was called before
ProcSignalInit(). This created a window where a process could miss a
signal barrier if it was issued between these two calls. As a result,
the process could fail to update its local XLogLogicalInfo cache,
leading to an inconsistent logical decoding state.
This commit fixes this by moving InitializeProcessXLogLogicalInfo()
after ProcSignalInit(). This ensures that the process is registered to
participate in signal barriers before its state is initialized,
preventing it from missing any state changes propagated during the
startup sequence.
Reviewed-by: Chao Li <[email protected]>
Reviewed-by: Matthias van de Meent <[email protected]>
Discussion: https://postgr.es/m/CAD21AoBzdeSyLSSPM5E6ysN1r8qzp8u_BRmnLvuAp_S8QxS_fQ@mail.gmail.com
Discussion: https://postgr.es/m/CAD21AoBj+zKvgw_Q8gjr4YbKccW_uMe3OFQ5+KT246FHUuNXSQ@mail.gmail.com
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/b384cdb2745b56121426605d985210896555fc05
Modified Files
--------------
src/backend/postmaster/auxprocess.c | 8 ++++++++
src/backend/utils/init/postinit.c | 13 ++++++++++---
2 files changed, 18 insertions(+), 3 deletions(-)
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