| From 461c10112d74ab223226554f2bb73aabaef43c9a Mon Sep 17 00:00:00 2001 |
| From: Jan Synacek <jsynacek@redhat.com> |
| Date: Tue, 15 Aug 2017 13:29:51 +0200 |
| Subject: [PATCH] udev: ignore SIGCHLD from unexpected processes (#1306539) |
| |
| RHEL-only |
| |
| Author: grzegorz.halat@motorolasolutions.com |
| Resolves: #1306539 |
| |
| src/udev/udev-event.c | 6 +++++- |
| 1 file changed, 5 insertions(+), 1 deletion(-) |
| |
| diff --git a/src/udev/udev-event.c b/src/udev/udev-event.c |
| index bc115f112d..0ba079201c 100644 |
| |
| |
| @@ -610,7 +610,11 @@ static int spawn_wait(struct udev_event *event, |
| event->sigterm = true; |
| break; |
| case SIGCHLD: |
| - if (waitpid(pid, &status, WNOHANG) < 0) |
| + if (pid != (pid_t) fdsi.ssi_pid) { |
| + log_debug("expected SIGCHLD from '%s' ["PID_FMT"] received from unknown process ["PID_FMT"]. Ignoring", cmd, pid, fdsi.ssi_pid); |
| + continue; |
| + } |
| + if (waitpid(pid, &status, WNOHANG) <= 0) |
| break; |
| if (WIFEXITED(status)) { |
| log_debug("'%s' ["PID_FMT"] exit with return code %i", cmd, pid, WEXITSTATUS(status)); |