Hi, On 2023-07-24 15:54:33 +0200, Alvaro Herrera wrote: > On 2023-Jul-24, Michael Paquier wrote: > > > On Sun, Jul 23, 2023 at 11:21:47PM +0300, Anton A. Melnikov wrote: > > > After some research, found this happens when the LimitAdditionalPins() > > > returns exactly zero. > > > In the current master, this will happen e.g. if shared_buffers = 10MB and > > > max_worker_processes = 40. > > > Then the command "pgbench --initialize postgres" will lead to crash. > > > See the backtrace attached. > > > > > > There is a fix in the patch applied. Please take a look on it. > > > > Nice catch, issue reproduced here so I am adding an open item for now. > > (I have not looked at the patch, yet.) > > Hmm, I see that all this code was added by 31966b151e6a, which makes > this Andres' item. I see Michael marked it as such in the open items > page, but did not CC Andres, so I'm doing that here now.
Thanks - I had indeed not seen this. I can't really keep up with the list at all times... > I don't know this code at all, but I hope that this can be solved with > just Anton's proposed patch. Yes, it's just that off-by-one. I need to check if there's a similar bug for local / temp table buffers though. Greetings, Andres Freund
