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-rw-r--r--src/socket.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/socket.c b/src/socket.c
index ad67215c1f..0a18716cd7 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -1679,7 +1679,12 @@ static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
log_debug("Incoming traffic on %s", u->meta.id);
if (events != EPOLLIN) {
- log_error("%s: Got invalid poll event (0x%x) on socket.", u->meta.id, events);
+
+ if (events & EPOLLHUP)
+ log_error("%s: Got POLLHUP on a listening socket. The service probably invoked shutdown() on it, and should better not do that.", u->meta.id);
+ else
+ log_error("%s: Got unexpected poll event (0x%x) on socket.", u->meta.id, events);
+
goto fail;
}