Created attachment 205154 [details]
The patch file
If the kernel is create with option MD_ROOT,
g_md_init will call md_preload and use mfs_root as the image.
In function md_preload, the address of image will be printed out.
In this case, the address of image is the address of a global
A kernel leakage happens.
Fix this by making this printing only happen when md_debug > 0.