diff options
| -rw-r--r-- | ipc/msg.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/ipc/msg.c b/ipc/msg.c index 558aa91186b6..52770bfde2a5 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -885,6 +885,8 @@ 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); |