1 files changed, 3 insertions, 0 deletions

diff --git a/fs/read_write.c b/fs/read_write.c
index f7b5a23b804b..e6ddc8dceb96 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -424,6 +424,9 @@ ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t
         const char __user *p;
         ssize_t ret;
 
+        if (!file->f_op || (!file->f_op->write && !file->f_op->aio_write))
+                return -EINVAL;
+
         old_fs = get_fs();
         set_fs(get_ds());
         p = (__force const char __user *)buf;