[PATCH] Add tainting for proprietary helper modules

Kernels that have had Windows drivers loaded into them are undebuggable.
I've wasted a number of hours chasing bugs filed in Fedora bugzilla only to
find out much later that the user had used such 'helpers', and their
problems were unreproducable without them loaded.

Acked-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/kernel/module.c b/kernel/module.c
index 4b06bbad49c2..5d9078d6f0fa 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1715,6 +1715,11 @@ static struct module *load_module(void __user *umod,
         /* Set up license info based on the info section */
         set_license(mod, get_modinfo(sechdrs, infoindex, "license"));
 
+        if (strcmp(mod->name, "ndiswrapper") == 0)
+                add_taint(TAINT_PROPRIETARY_MODULE);
+        if (strcmp(mod->name, "driverloader") == 0)
+                add_taint(TAINT_PROPRIETARY_MODULE);
+
 #ifdef CONFIG_MODULE_UNLOAD
         /* Set up MODINFO_ATTR fields */
         setup_modinfo(mod, sechdrs, infoindex);