diff options
| author | Thomas Munro <tmunro@postgresql.org> | 2023-07-03 16:20:01 +1200 |
|---|---|---|
| committer | Thomas Munro <tmunro@postgresql.org> | 2023-07-04 09:21:33 +1200 |
| commit | 255a925d333be9a3d6314e2fe698063eb8e753a6 (patch) | |
| tree | d5e78762bf34f307e7e5d52b15666a368e23c2e3 /src/backend/jit/llvm/llvmjit.c | |
| parent | 17b8887c29e55e2ac2e04a41a87714a4960484fa (diff) | |
| download | postgresql-255a925d333be9a3d6314e2fe698063eb8e753a6.tar.gz postgresql-255a925d333be9a3d6314e2fe698063eb8e753a6.zip | |
Fix race in SSI interaction with gin fast path.
The ginfast.c code previously checked for conflicts in before locking
the relevant buffer, leaving a window where a RW conflict could be
missed. Re-order.
There was also a place where buffer ID and block number were confused
while trying to predicate-lock a page, noted by visual inspection.
Back-patch to all supported releases. Fixes one more problem discovered
with the reproducer from bug #17949, in this case when Dmitry tried
other index types.
Reported-by: Artem Anisimov <artem.anisimov.255@gmail.com>
Reported-by: Dmitry Dolgov <9erthalion6@gmail.com>
Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi>
Discussion: https://postgr.es/m/17949-a0f17035294a55e2%40postgresql.org
Diffstat (limited to 'src/backend/jit/llvm/llvmjit.c')
0 files changed, 0 insertions, 0 deletions