statx: reject unknown flags when using NULL path

[linux-block.git] / fs / stat.c

diff --git a/fs/stat.c b/fs/stat.c
index fa0be59340cc9136eb8c508434e10289acc8fc97..df484a60846d879b211028f69165bd6070d928d0 100644 (file)
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -130,9 +130,13 @@ EXPORT_SYMBOL(vfs_getattr);
 int vfs_statx_fd(unsigned int fd, struct kstat *stat,
                 u32 request_mask, unsigned int query_flags)
 {
-       struct fd f = fdget_raw(fd);
+       struct fd f;
        int error = -EBADF;
 
+       if (query_flags & ~KSTAT_QUERY_FLAGS)
+               return -EINVAL;
+
+       f = fdget_raw(fd);
        if (f.file) {
                error = vfs_getattr(&f.file->f_path, stat,
                                    request_mask, query_flags);