---

yaml --- r: 210856 b: refs/heads/master c: 6574542 h: refs/heads/master v: v3
git-mirror · Sep 21, 2010 · 77cd6d5 · 77cd6d5
1 parent 8c5edcb
commit 77cd6d5
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Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6df7aadcd9290807c464675098b5dd2dc9da5075
+refs/heads/master: 65745422a898741ee0e7068ef06624ab06e8aefa
diff --git a/trunk/drivers/char/virtio_console.c b/trunk/drivers/char/virtio_console.c
@@ -596,6 +596,10 @@ static ssize_t port_fops_write(struct file *filp, const char __user *ubuf,
 	ssize_t ret;
 	bool nonblock;
 
+	/* Userspace could be out to fool us */
+	if (!count)
+		return 0;
+
 	port = filp->private_data;
 
 	nonblock = filp->f_flags & O_NONBLOCK;