From 17066ac8600412eabb1fdf8360cf6ada13f02391 Mon Sep 17 00:00:00 2001 From: Roman Arutyunyan Date: Fri, 18 Nov 2022 19:31:38 +0400 Subject: Process events posted by ngx_close_idle_connections() immediately. Previously, if an event was posted by a read event handler, called by ngx_close_idle_connections(), that event was not processed until the next event loop iteration, which could happen after a timeout. --- src/os/unix/ngx_process_cycle.c | 1 + 1 file changed, 1 insertion(+) (limited to 'src/os/unix/ngx_process_cycle.c') diff --git a/src/os/unix/ngx_process_cycle.c b/src/os/unix/ngx_process_cycle.c index 07cd05e80..821539bb7 100644 --- a/src/os/unix/ngx_process_cycle.c +++ b/src/os/unix/ngx_process_cycle.c @@ -736,6 +736,7 @@ ngx_worker_process_cycle(ngx_cycle_t *cycle, void *data) ngx_set_shutdown_timer(cycle); ngx_close_listening_sockets(cycle); ngx_close_idle_connections(cycle); + ngx_event_process_posted(cycle, &ngx_posted_events); } } -- cgit v1.2.3 From d52e5684437aedd6bb74d6b2b602b7306f4212ba Mon Sep 17 00:00:00 2001 From: Maxim Dounin Date: Wed, 23 Nov 2022 23:48:53 +0300 Subject: Fixed segfault when switching off master process during upgrade. Binary upgrades are not supported without master process, but it is, however, possible, that nginx running with master process is asked to upgrade binary, and the configuration file as available on disk at this time includes "master_process off;". If this happens, listening sockets inherited from the previous binary will have ls[i].previous set. But the old cycle on initial process startup, including startup after binary upgrade, is destroyed by ngx_init_cycle() once configuration parsing is complete. As a result, an attempt to dereference ls[i].previous in ngx_event_process_init() accesses already freed memory. Fix is to avoid looking into ls[i].previous if the old cycle is already freed. With this change it is also no longer needed to clear ls[i].previous in worker processes, so the relevant code was removed. --- src/os/unix/ngx_process_cycle.c | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'src/os/unix/ngx_process_cycle.c') diff --git a/src/os/unix/ngx_process_cycle.c b/src/os/unix/ngx_process_cycle.c index 821539bb7..98d2dd29b 100644 --- a/src/os/unix/ngx_process_cycle.c +++ b/src/os/unix/ngx_process_cycle.c @@ -759,7 +759,6 @@ ngx_worker_process_init(ngx_cycle_t *cycle, ngx_int_t worker) ngx_cpuset_t *cpu_affinity; struct rlimit rlmt; ngx_core_conf_t *ccf; - ngx_listening_t *ls; if (ngx_set_environment(cycle, NULL) == NULL) { /* fatal */ @@ -889,15 +888,6 @@ ngx_worker_process_init(ngx_cycle_t *cycle, ngx_int_t worker) tp = ngx_timeofday(); srandom(((unsigned) ngx_pid << 16) ^ tp->sec ^ tp->msec); - /* - * disable deleting previous events for the listening sockets because - * in the worker processes there are no events at all at this point - */ - ls = cycle->listening.elts; - for (i = 0; i < cycle->listening.nelts; i++) { - ls[i].previous = NULL; - } - for (i = 0; cycle->modules[i]; i++) { if (cycle->modules[i]->init_process) { if (cycle->modules[i]->init_process(cycle) == NGX_ERROR) { -- cgit v1.2.3