X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=fs%2Fpipe.c;h=2234f3f61f8d8fbc6a1f77dbaae6412130b8a5d4;hb=5a048e3b59fb4211b7978f78217878071c344379;hp=64a494cef0a00be57d0800637b71caf2537c2694;hpb=521e2e03b8f6c92910b72fd464126596242398f8;p=firefly-linux-kernel-4.4.55.git

diff --git a/fs/pipe.c b/fs/pipe.c
index 64a494cef0a0..2234f3f61f8d 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -863,6 +863,9 @@ pipe_rdwr_open(struct inode *inode, struct file *filp)
 {
 	int ret = -ENOENT;
 
+	if (!(filp->f_mode & (FMODE_READ|FMODE_WRITE)))
+		return -EINVAL;
+
 	mutex_lock(&inode->i_mutex);
 
 	if (inode->i_pipe) {