eventpoll: fix uninitialized variable in epoll_ctl

[firefly-linux-kernel-4.4.55.git] / fs / eventpoll.c

diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index b10b48c2a7afaf859f2b508d5bca784abfe870ac..7bcfff900f058cd9d98278c1fa13ed2b0202eccc 100644 (file)
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -1852,7 +1852,8 @@ SYSCALL_DEFINE4(epoll_ctl, int, epfd, int, op, int, fd,
                goto error_tgt_fput;
 
        /* Check if EPOLLWAKEUP is allowed */
-       ep_take_care_of_epollwakeup(&epds);
+       if (ep_op_has_event(op))
+               ep_take_care_of_epollwakeup(&epds);
 
        /*
         * We have to check that the file structure underneath the file descriptor