Hi, On 2024-05-10 16:00:01 +0300, Alexander Lakhin wrote: > and discovered that XLogRecordAssemble() calculates CRC over a buffer, > that might be modified by another process.
If, with "might", you mean that it's legitimate for that buffer to be modified, I don't think so. The bug is that something is modifying the buffer despite it being exclusively locked. I.e. what we likely have here is a bug somewhere in the hash index code. Greetings, Andres Freund
