mirror of
https://github.com/neondatabase/neon.git
synced 2025-12-22 21:59:59 +00:00
056056bef0
## Problem
```
postgres=> select neon.prewarm_local_cache('\xfcfcfcfc01000000ffffffff070000000000000000000000000000000000000000000000000000000000000000000000000000ff', 1);
WARNING: terminating connection because of crash of another server process
DETAIL: The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory.
HINT: In a moment you should be able to reconnect to the database and repeat your command.
FATAL: server conn crashed?
```
The function takes a bytea argument and casts it to a C struct, without
validating the contents.
## Summary of changes
Added validation for number of pages to be prefetched and for the chunks
as well.