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| author | Thomas Munro <tmunro@postgresql.org> | 2020-06-08 13:57:24 +1200 |
|---|---|---|
| committer | Thomas Munro <tmunro@postgresql.org> | 2020-06-08 13:58:35 +1200 |
| commit | 72766ad6397a1795f2739bda95370b02d5738a3f (patch) | |
| tree | 0c7011252109a72bd78088664e8cf87bad0d47dc /src/backend/utils/adt/float.c | |
| parent | b944b1d1a9ac4a08b790833522d5edd165f740d1 (diff) | |
| download | postgresql-72766ad6397a1795f2739bda95370b02d5738a3f.tar.gz postgresql-72766ad6397a1795f2739bda95370b02d5738a3f.zip | |
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
Diffstat (limited to 'src/backend/utils/adt/float.c')
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