compat: copy missing fields in compat_statfs64 to user

f_flags and f_spare fields were not copied to userspace when
compat_sys_[f]statfs64 called.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/compat.c b/fs/compat.c
index c62b5e6a1c15..f6fd0a00e6cc 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -320,7 +320,9 @@ static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstat
             __put_user(kbuf->f_namelen, &ubuf->f_namelen) ||
             __put_user(kbuf->f_fsid.val[0], &ubuf->f_fsid.val[0]) ||
             __put_user(kbuf->f_fsid.val[1], &ubuf->f_fsid.val[1]) ||
-            __put_user(kbuf->f_frsize, &ubuf->f_frsize))
+            __put_user(kbuf->f_frsize, &ubuf->f_frsize) ||
+            __put_user(kbuf->f_flags, &ubuf->f_flags) ||
+            __clear_user(ubuf->f_spare, sizeof(ubuf->f_spare)))
                 return -EFAULT;
         return 0;
 }