Taint the kernel with TAINT_TEST whenever a test module loads, by adding a new "TEST" module property, and setting it for all modules in the tools/testing directory. This property can also be set manually, for tests which live outside the tools/testing directory with: MODULE_INFO(test, "Y");
Reviewed-by: Luis Chamberlain mcgrof@kernel.org Signed-off-by: David Gow davidgow@google.com --- kernel/module/main.c | 7 +++++++ scripts/mod/modpost.c | 3 +++ 2 files changed, 10 insertions(+)
diff --git a/kernel/module/main.c b/kernel/module/main.c index fed58d30725d..730503561eb0 100644 --- a/kernel/module/main.c +++ b/kernel/module/main.c @@ -1988,6 +1988,13 @@ static int check_modinfo(struct module *mod, struct load_info *info, int flags) /* Set up license info based on the info section */ set_license(mod, get_modinfo(info, "license"));
+ if (!get_modinfo(info, "test")) { + if (!test_taint(TAINT_TEST)) + pr_warn_once("%s: loading test module taints kernel.\n", + mod->name); + add_taint_module(mod, TAINT_TEST, LOCKDEP_STILL_OK); + } + return 0; }
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 29d5a841e215..5937212b4433 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -2191,6 +2191,9 @@ static void add_header(struct buffer *b, struct module *mod)
if (strstarts(mod->name, "drivers/staging")) buf_printf(b, "\nMODULE_INFO(staging, "Y");\n"); + + if (strstarts(mod->name, "tools/testing")) + buf_printf(b, "\nMODULE_INFO(test, "Y");\n"); }
static void add_exported_symbols(struct buffer *buf, struct module *mod)