On Wed, 3 Apr 2024 at 09:42, Alexander Korotkov <aekorot...@gmail.com> wrote: > I'm trying to figure out if this failure could be related to this commit... > https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=culicidae&dt=2024-04-02%2020%3A24%3A55
Yeah, I think it is. The problem is that in WaitLSNSetLatches() waitLSN is NULL, so SpinLockAcquire(&waitLSN->mutex); segfaults. This shared memory segment is initialized in WaitLSNShmemInit() called via CreateSharedMemoryAndSemaphores(). If you look at main() in main.c EXEC_BACKEND builds call SubPostmasterMain(), which has no call to CreateSharedMemoryAndSemaphores(), so waitLSN isn't initialized. David
