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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2021-06-12 12:59:15 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2021-06-12 12:59:15 -0400 |
| commit | fe6a20ce54cbbb6fcfe9f6675d563af836ae799a (patch) | |
| tree | 79aab32108476f8a1a4c5bb7883616be468722af /src/backend/replication/logical/reorderbuffer.c | |
| parent | c3652f976b7696a96a9c5606cc2d613af77e2e63 (diff) | |
| download | postgresql-fe6a20ce54cbbb6fcfe9f6675d563af836ae799a.tar.gz postgresql-fe6a20ce54cbbb6fcfe9f6675d563af836ae799a.zip | |
Don't use Asserts to check for violations of replication protocol.
Using an Assert to check the validity of incoming messages is an
extremely poor decision. In a debug build, it should not be that easy
for a broken or malicious remote client to crash the logrep worker.
The consequences could be even worse in non-debug builds, which will
fail to make such checks at all, leading to who-knows-what misbehavior.
Hence, promote every Assert that could possibly be triggered by wrong
or out-of-order replication messages to a full test-and-ereport.
To avoid bloating the set of messages the translation team has to cope
with, establish a policy that replication protocol violation error
reports don't need to be translated. Hence, all the new messages here
use errmsg_internal(). A couple of old messages are changed likewise
for consistency.
Along the way, fix some non-idiomatic or outright wrong uses of
hash_search().
Most of these mistakes are new with the "streaming replication"
patch (commit 464824323), but a couple go back a long way.
Back-patch as appropriate.
Discussion: https://postgr.es/m/1719083.1623351052@sss.pgh.pa.us
Diffstat (limited to 'src/backend/replication/logical/reorderbuffer.c')
| -rw-r--r-- | src/backend/replication/logical/reorderbuffer.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/backend/replication/logical/reorderbuffer.c b/src/backend/replication/logical/reorderbuffer.c index 2d9e1279bb2..f96029f15a4 100644 --- a/src/backend/replication/logical/reorderbuffer.c +++ b/src/backend/replication/logical/reorderbuffer.c @@ -1703,7 +1703,7 @@ ReorderBufferBuildTupleCidHash(ReorderBuffer *rb, ReorderBufferTXN *txn) ent = (ReorderBufferTupleCidEnt *) hash_search(txn->tuplecid_hash, (void *) &key, - HASH_ENTER | HASH_FIND, + HASH_ENTER, &found); if (!found) { |