summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--Documentation/sysctl/kernel.txt1
-rw-r--r--include/linux/kernel.h1
-rw-r--r--kernel/module.c11
-rw-r--r--kernel/panic.c6
4 files changed, 17 insertions, 2 deletions
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
index e1ff0d920a5c..bde799e06598 100644
--- a/Documentation/sysctl/kernel.txt
+++ b/Documentation/sysctl/kernel.txt
@@ -369,4 +369,5 @@ can be ORed together:
2 - A module was force loaded by insmod -f.
Set by modutils >= 2.4.9 and module-init-tools.
4 - Unsafe SMP processors: SMP with CPUs not designed for SMP.
+ 64 - A module from drivers/staging was loaded.
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 2651f805ba6d..b36805cb95fb 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -260,6 +260,7 @@ extern enum system_states {
#define TAINT_DIE (1<<7)
#define TAINT_OVERRIDDEN_ACPI_TABLE (1<<8)
#define TAINT_WARN (1<<9)
+#define TAINT_CRAP (1<<10)
extern void dump_stack(void) __cold;
diff --git a/kernel/module.c b/kernel/module.c
index 9db11911e04b..152b1655bbac 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1806,6 +1806,7 @@ static noinline struct module *load_module(void __user *umod,
Elf_Ehdr *hdr;
Elf_Shdr *sechdrs;
char *secstrings, *args, *modmagic, *strtab = NULL;
+ char *staging;
unsigned int i;
unsigned int symindex = 0;
unsigned int strindex = 0;
@@ -1960,6 +1961,14 @@ static noinline struct module *load_module(void __user *umod,
goto free_hdr;
}
+ staging = get_modinfo(sechdrs, infoindex, "staging");
+ if (staging) {
+ add_taint_module(mod, TAINT_CRAP);
+ printk(KERN_WARNING "%s: module is from the staging directory,"
+ " the quality is unknown, you have been warned.\n",
+ mod->name);
+ }
+
/* Now copy in args */
args = strndup_user(uargs, ~0UL >> 1);
if (IS_ERR(args)) {
@@ -2556,6 +2565,8 @@ static char *module_flags(struct module *mod, char *buf)
buf[bx++] = 'P';
if (mod->taints & TAINT_FORCED_MODULE)
buf[bx++] = 'F';
+ if (mod->taints & TAINT_CRAP)
+ buf[bx++] = 'C';
/*
* TAINT_FORCED_RMMOD: could be added.
* TAINT_UNSAFE_SMP, TAINT_MACHINE_CHECK, TAINT_BAD_PAGE don't
diff --git a/kernel/panic.c b/kernel/panic.c
index 12c5a0a6c89b..98e2047f4db7 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -155,6 +155,7 @@ EXPORT_SYMBOL(panic);
* 'U' - Userspace-defined naughtiness.
* 'A' - ACPI table overridden.
* 'W' - Taint on warning.
+ * 'C' - modules from drivers/staging are loaded.
*
* The string is overwritten by the next call to print_taint().
*/
@@ -163,7 +164,7 @@ const char *print_tainted(void)
{
static char buf[20];
if (tainted) {
- snprintf(buf, sizeof(buf), "Tainted: %c%c%c%c%c%c%c%c%c%c",
+ snprintf(buf, sizeof(buf), "Tainted: %c%c%c%c%c%c%c%c%c%c%c",
tainted & TAINT_PROPRIETARY_MODULE ? 'P' : 'G',
tainted & TAINT_FORCED_MODULE ? 'F' : ' ',
tainted & TAINT_UNSAFE_SMP ? 'S' : ' ',
@@ -173,7 +174,8 @@ const char *print_tainted(void)
tainted & TAINT_USER ? 'U' : ' ',
tainted & TAINT_DIE ? 'D' : ' ',
tainted & TAINT_OVERRIDDEN_ACPI_TABLE ? 'A' : ' ',
- tainted & TAINT_WARN ? 'W' : ' ');
+ tainted & TAINT_WARN ? 'W' : ' ',
+ tainted & TAINT_CRAP ? 'C' : ' ');
}
else
snprintf(buf, sizeof(buf), "Not tainted");