Обсуждение: pgsql: Fix locking bugs that could corrupt pg_control.
Fix locking bugs that could corrupt pg_control. The redo routines for XLOG_CHECKPOINT_{ONLINE,SHUTDOWN} must acquire ControlFileLock before modifying ControlFile->checkPointCopy, or the checkpointer could write out a control file with a bad checksum. Likewise, XLogReportParameters() must acquire ControlFileLock before modifying ControlFile and calling UpdateControlFile(). Back-patch to all supported releases. Author: Nathan Bossart <bossartn@amazon.com> Author: Fujii Masao <masao.fujii@oss.nttdata.com> Reviewed-by: Fujii Masao <masao.fujii@oss.nttdata.com> Reviewed-by: Michael Paquier <michael@paquier.xyz> Reviewed-by: Thomas Munro <thomas.munro@gmail.com> Discussion: https://postgr.es/m/70BF24D6-DC51-443F-B55A-95735803842A%40amazon.com Branch ------ REL9_5_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/09dc17486393563a680400908b33061ada5826f5 Modified Files -------------- src/backend/access/transam/xlog.c | 8 ++++++++ 1 file changed, 8 insertions(+)