Hi, I found that in the PG source code function BackendInitialize(), handler for SIGTERM was set to be startup_die(). And in startup_die(), we simply call proc_exit to exit the process.
What's more, early in BackendInitialize() function, we called pq_init to setup socket_close() as a process exit callback. The problem is: in socket_close, we have some none-reentrant calls like free(). It may cause deadlock of this backend if we are excueting malloc/free right before we step into the signal hander startup_die(). And I experienced that on my local server :) Similar to the problem in this thread: https://www.postgresql-archive.org/PG-signal-handler-and-non-reentrant-malloc-free-calls-td3403162.html. Is there a way to avoid this deadlock in startup_die()? Thanks.. -- Sent from: http://www.postgresql-archive.org/PostgreSQL-hackers-f1928748.html
