https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238634
Bug ID: 238634
Summary: [Patch] dev:md:md.c: Fix a kernel address leakage
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Created attachment 205154
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=205154&action=edit
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
object mfs_root.
A kernel leakage happens.
Fix this by making this printing only happen when md_debug > 0.
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