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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-02-28 05:29:16 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-02-28 05:29:16 -0300
commit844e3cded9c8665e95b1e43b707a6c3adcbc901f (patch)
treedd9cccb325c949319a9de3e0cabad91d6261fa75 /kernel/module.c
parent6d461a4fe7896faa1aec5a5417888cf179e46b9f (diff)
Linux-libre 4.4.3-gnu
Diffstat (limited to 'kernel/module.c')
-rw-r--r--kernel/module.c28
1 files changed, 16 insertions, 12 deletions
diff --git a/kernel/module.c b/kernel/module.c
index 38c7bd558..14833e6d5 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -3515,7 +3515,7 @@ static int load_module(struct load_info *info, const char __user *uargs,
/* Module is ready to execute: parsing args may do that. */
after_dashes = parse_args(mod->name, mod->args, mod->kp, mod->num_kp,
- -32768, 32767, NULL,
+ -32768, 32767, mod,
unknown_module_param_cb);
if (IS_ERR(after_dashes)) {
err = PTR_ERR(after_dashes);
@@ -3646,6 +3646,11 @@ static inline int is_arm_mapping_symbol(const char *str)
&& (str[2] == '\0' || str[2] == '.');
}
+static const char *symname(struct module *mod, unsigned int symnum)
+{
+ return mod->strtab + mod->symtab[symnum].st_name;
+}
+
static const char *get_ksymbol(struct module *mod,
unsigned long addr,
unsigned long *size,
@@ -3668,15 +3673,15 @@ static const char *get_ksymbol(struct module *mod,
/* We ignore unnamed symbols: they're uninformative
* and inserted at a whim. */
+ if (*symname(mod, i) == '\0'
+ || is_arm_mapping_symbol(symname(mod, i)))
+ continue;
+
if (mod->symtab[i].st_value <= addr
- && mod->symtab[i].st_value > mod->symtab[best].st_value
- && *(mod->strtab + mod->symtab[i].st_name) != '\0'
- && !is_arm_mapping_symbol(mod->strtab + mod->symtab[i].st_name))
+ && mod->symtab[i].st_value > mod->symtab[best].st_value)
best = i;
if (mod->symtab[i].st_value > addr
- && mod->symtab[i].st_value < nextval
- && *(mod->strtab + mod->symtab[i].st_name) != '\0'
- && !is_arm_mapping_symbol(mod->strtab + mod->symtab[i].st_name))
+ && mod->symtab[i].st_value < nextval)
nextval = mod->symtab[i].st_value;
}
@@ -3687,7 +3692,7 @@ static const char *get_ksymbol(struct module *mod,
*size = nextval - mod->symtab[best].st_value;
if (offset)
*offset = addr - mod->symtab[best].st_value;
- return mod->strtab + mod->symtab[best].st_name;
+ return symname(mod, best);
}
/* For kallsyms to ask for address resolution. NULL means not found. Careful
@@ -3782,8 +3787,7 @@ int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
if (symnum < mod->num_symtab) {
*value = mod->symtab[symnum].st_value;
*type = mod->symtab[symnum].st_info;
- strlcpy(name, mod->strtab + mod->symtab[symnum].st_name,
- KSYM_NAME_LEN);
+ strlcpy(name, symname(mod, symnum), KSYM_NAME_LEN);
strlcpy(module_name, mod->name, MODULE_NAME_LEN);
*exported = is_exported(name, *value, mod);
preempt_enable();
@@ -3800,7 +3804,7 @@ static unsigned long mod_find_symname(struct module *mod, const char *name)
unsigned int i;
for (i = 0; i < mod->num_symtab; i++)
- if (strcmp(name, mod->strtab+mod->symtab[i].st_name) == 0 &&
+ if (strcmp(name, symname(mod, i)) == 0 &&
mod->symtab[i].st_info != 'U')
return mod->symtab[i].st_value;
return 0;
@@ -3844,7 +3848,7 @@ int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
if (mod->state == MODULE_STATE_UNFORMED)
continue;
for (i = 0; i < mod->num_symtab; i++) {
- ret = fn(data, mod->strtab + mod->symtab[i].st_name,
+ ret = fn(data, symname(mod, i),
mod, mod->symtab[i].st_value);
if (ret != 0)
return ret;