diff options
| -rw-r--r-- | Documentation/oops-tracing.txt | 2 | ||||
| -rw-r--r-- | include/linux/kernel.h | 1 | ||||
| -rw-r--r-- | kernel/module.c | 11 | ||||
| -rw-r--r-- | kernel/panic.c | 2 | ||||
| -rw-r--r-- | scripts/mod/modpost.c | 7 |
5 files changed, 19 insertions, 4 deletions
diff --git a/Documentation/oops-tracing.txt b/Documentation/oops-tracing.txt index 6fe9001b926..13032c0140d 100644 --- a/Documentation/oops-tracing.txt +++ b/Documentation/oops-tracing.txt @@ -263,6 +263,8 @@ characters, each representing a particular tainted value. 12: 'I' if the kernel is working around a severe bug in the platform firmware (BIOS or similar). + 13: 'O' if an externally-built ("out-of-tree") module has been loaded. + The primary reason for the 'Tainted: ' string is to tell kernel debuggers if this is a clean kernel or if anything unusual has occurred. Tainting is permanent: even if an offending module is diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 4c0d3b2fd5f..e8b1597b5cf 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -371,6 +371,7 @@ extern enum system_states { #define TAINT_WARN 9 #define TAINT_CRAP 10 #define TAINT_FIRMWARE_WORKAROUND 11 +#define TAINT_OOT_MODULE 12 extern const char hex_asc[]; #define hex_asc_lo(x) hex_asc[((x) & 0x0f)] diff --git a/kernel/module.c b/kernel/module.c index 93342d992f3..ef8cb70c699 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -2487,6 +2487,9 @@ static int check_modinfo(struct module *mod, struct load_info *info) return -ENOEXEC; } + if (!get_modinfo(info, "intree")) + add_taint_module(mod, TAINT_OOT_MODULE); + if (get_modinfo(info, "staging")) { add_taint_module(mod, TAINT_CRAP); printk(KERN_WARNING "%s: module is from the staging directory," @@ -2878,8 +2881,7 @@ static struct module *load_module(void __user *umod, } /* This has to be done once we're sure module name is unique. */ - if (!mod->taints || mod->taints == (1U<<TAINT_CRAP)) - dynamic_debug_setup(info.debug, info.num_debug); + dynamic_debug_setup(info.debug, info.num_debug); /* Find duplicate symbols */ err = verify_export_symbols(mod); @@ -2915,8 +2917,7 @@ static struct module *load_module(void __user *umod, module_bug_cleanup(mod); ddebug: - if (!mod->taints || mod->taints == (1U<<TAINT_CRAP)) - dynamic_debug_remove(info.debug); + dynamic_debug_remove(info.debug); unlock: mutex_unlock(&module_mutex); synchronize_sched(); @@ -3257,6 +3258,8 @@ static char *module_flags(struct module *mod, char *buf) buf[bx++] = '('; if (mod->taints & (1 << TAINT_PROPRIETARY_MODULE)) buf[bx++] = 'P'; + else if (mod->taints & (1 << TAINT_OOT_MODULE)) + buf[bx++] = 'O'; if (mod->taints & (1 << TAINT_FORCED_MODULE)) buf[bx++] = 'F'; if (mod->taints & (1 << TAINT_CRAP)) diff --git a/kernel/panic.c b/kernel/panic.c index d7bb6974efb..b2659360421 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -177,6 +177,7 @@ static const struct tnt tnts[] = { { TAINT_WARN, 'W', ' ' }, { TAINT_CRAP, 'C', ' ' }, { TAINT_FIRMWARE_WORKAROUND, 'I', ' ' }, + { TAINT_OOT_MODULE, 'O', ' ' }, }; /** @@ -194,6 +195,7 @@ static const struct tnt tnts[] = { * 'W' - Taint on warning. * 'C' - modules from drivers/staging are loaded. * 'I' - Working around severe firmware bug. + * 'O' - Out-of-tree module has been loaded. * * The string is overwritten by the next call to print_tainted(). */ diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index a509ff8f32f..2bd594e6d1b 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -1849,6 +1849,12 @@ static void add_header(struct buffer *b, struct module *mod) buf_printf(b, "};\n"); } +static void add_intree_flag(struct buffer *b, int is_intree) +{ + if (is_intree) + buf_printf(b, "\nMODULE_INFO(intree, \"Y\");\n"); +} + static void add_staging_flag(struct buffer *b, const char *name) { static const char *staging_dir = "drivers/staging"; @@ -2169,6 +2175,7 @@ int main(int argc, char **argv) buf.pos = 0; add_header(&buf, mod); + add_intree_flag(&buf, !external_module); add_staging_flag(&buf, mod->name); err |= add_versions(&buf, mod); add_depends(&buf, mod, modules); |