From e10c9985bbc3cf79f12f9ec7317adfe697fa8214 Mon Sep 17 00:00:00 2001 From: Yuxuan Shui Date: Sat, 15 Feb 2014 02:38:50 +0800 Subject: core: fix detection of dead processes Commit 5ba6985b moves the UNIT_VTABLE(u)->sigchld_event before systemd actually reaps the zombie. Which leads to service_load_pid_file accepting zombie as a valid pid. This fixes timeouts like: [ 2746.602243] systemd[1]: chronyd.service stop-sigterm timed out. Killing. [ 2836.852545] systemd[1]: chronyd.service still around after SIGKILL. Ignoring. [ 2927.102187] systemd[1]: chronyd.service stop-final-sigterm timed out. Killing. [ 3017.352560] systemd[1]: chronyd.service still around after final SIGKILL. Entering failed mode. --- src/core/service.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'src/core') diff --git a/src/core/service.c b/src/core/service.c index 51297846f9..3a2ef01570 100644 --- a/src/core/service.c +++ b/src/core/service.c @@ -1376,6 +1376,14 @@ static int service_load_pid_file(Service *s, bool may_warn) { return -ESRCH; } + if (get_process_state(pid) == 'Z') { + if (may_warn) + log_info_unit(UNIT(s)->id, + "PID "PID_FMT" read from file %s is a zombie.", + pid, s->pid_file); + return -ESRCH; + } + if (s->main_pid_known) { if (pid == s->main_pid) return 0; -- cgit v1.2.3-54-g00ecf