1 files changed, 4 insertions, 0 deletions

diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 2c5baa5e8291..f4a24a46245e 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -165,6 +165,10 @@ static ssize_t ext4_write_checks(struct kiocb *iocb, struct iov_iter *from)
         ret = generic_write_checks(iocb, from);
         if (ret <= 0)
                 return ret;
+
+        if (unlikely(IS_IMMUTABLE(inode)))
+                return -EPERM;
+
         /*
          * If we have encountered a bitmap-format file, the size limit
          * is smaller than s_maxbytes, which is for extent-mapped files.