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| author | Alexander Korotkov <akorotkov@postgresql.org> | 2025-02-05 00:15:17 +0200 |
|---|---|---|
| committer | Alexander Korotkov <akorotkov@postgresql.org> | 2025-02-05 00:45:37 +0200 |
| commit | d54d5668b4d7ef44e2c8475ed3944686293e9829 (patch) | |
| tree | 08dcef5b6dace593ae6955b4d615c5587748a0b1 /src/backend/access/gist/giststrat.c | |
| parent | e8d8174caf75c5724847b43b886a7feb1628c4d4 (diff) | |
| download | postgresql-d54d5668b4d7ef44e2c8475ed3944686293e9829.tar.gz postgresql-d54d5668b4d7ef44e2c8475ed3944686293e9829.zip | |
pg_controldata: Fix possible errors on corrupted pg_control
Protect against malformed timestamps. Also protect against negative WalSegSz
as it triggers division by zero:
((0x100000000UL) / (WalSegSz)) can turn into zero in
XLogFileName(xlogfilename, ControlFile->checkPointCopy.ThisTimeLineID,
segno, WalSegSz);
because if WalSegSz is -1 then by arithmetic rules in C we get
0x100000000UL / 0xFFFFFFFFFFFFFFFFUL == 0.
Author: Ilyasov Ian <ianilyasov@outlook.com>
Author: Anton Voloshin <a.voloshin@postgrespro.ru>
Backpatch-through: 13
Diffstat (limited to 'src/backend/access/gist/giststrat.c')
0 files changed, 0 insertions, 0 deletions