1 files changed, 2 insertions, 0 deletions

diff --git a/ipc/msg.c b/ipc/msg.c
index 245db1140ad6..649853105a5d 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -901,6 +901,8 @@ long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp, int msgfl
                 return -EINVAL;
 
         if (msgflg & MSG_COPY) {
+                if ((msgflg & MSG_EXCEPT) || !(msgflg & IPC_NOWAIT))
+                        return -EINVAL;
                 copy = prepare_copy(buf, min_t(size_t, bufsz, ns->msg_ctlmax));
                 if (IS_ERR(copy))
                         return PTR_ERR(copy);