summaryrefslogtreecommitdiffstats
path: root/kernel/module.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/module.c')
-rw-r--r--kernel/module.c29
1 files changed, 22 insertions, 7 deletions
diff --git a/kernel/module.c b/kernel/module.c
index ca4509b..3803449 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -302,6 +302,7 @@ int unregister_module_notifier(struct notifier_block *nb)
EXPORT_SYMBOL(unregister_module_notifier);
struct load_info {
+ char *name;
Elf_Ehdr *hdr;
unsigned long len;
Elf_Shdr *sechdrs;
@@ -1318,12 +1319,12 @@ static int check_version(const struct load_info *info,
}
/* Broken toolchain. Warn once, then let it go.. */
- pr_warn_once("%s: no symbol version for %s\n", mod->name, symname);
+ pr_warn_once("%s: no symbol version for %s\n", info->name, symname);
return 1;
bad_version:
pr_warn("%s: disagrees about version of symbol %s\n",
- mod->name, symname);
+ info->name, symname);
return 0;
}
@@ -2913,9 +2914,15 @@ static int rewrite_section_headers(struct load_info *info, int flags)
info->index.vers = 0; /* Pretend no __versions section! */
else
info->index.vers = find_sec(info, "__versions");
+ info->sechdrs[info->index.vers].sh_flags &= ~(unsigned long)SHF_ALLOC;
+
info->index.info = find_sec(info, ".modinfo");
+ if (!info->index.info)
+ info->name = "(missing .modinfo section)";
+ else
+ info->name = get_modinfo(info, "name");
info->sechdrs[info->index.info].sh_flags &= ~(unsigned long)SHF_ALLOC;
- info->sechdrs[info->index.vers].sh_flags &= ~(unsigned long)SHF_ALLOC;
+
return 0;
}
@@ -2955,14 +2962,22 @@ static struct module *setup_load_info(struct load_info *info, int flags)
info->index.mod = find_sec(info, ".gnu.linkonce.this_module");
if (!info->index.mod) {
- pr_warn("No module found in object\n");
+ pr_warn("%s: No module found in object\n",
+ info->name ?: "(missing .modinfo name field)");
return ERR_PTR(-ENOEXEC);
}
/* This is temporary: point mod into copy of data. */
mod = (void *)info->sechdrs[info->index.mod].sh_addr;
+ /*
+ * If we didn't load the .modinfo 'name' field, fall back to
+ * on-disk struct mod 'name' field.
+ */
+ if (!info->name)
+ info->name = mod->name;
+
if (info->index.sym == 0) {
- pr_warn("%s: module has no symbols (stripped?)\n", mod->name);
+ pr_warn("%s: module has no symbols (stripped?)\n", info->name);
return ERR_PTR(-ENOEXEC);
}
@@ -2990,7 +3005,7 @@ static int check_modinfo(struct module *mod, struct load_info *info, int flags)
return err;
} else if (!same_magic(modmagic, vermagic, info->index.vers)) {
pr_err("%s: version magic '%s' should be '%s'\n",
- mod->name, modmagic, vermagic);
+ info->name, modmagic, vermagic);
return -ENOEXEC;
}
@@ -3270,7 +3285,7 @@ static struct module *layout_and_allocate(struct load_info *info, int flags)
if (IS_ERR(mod))
return mod;
- if (blacklisted(mod->name))
+ if (blacklisted(info->name))
return ERR_PTR(-EPERM);
err = check_modinfo(mod, info, flags);
OpenPOWER on IntegriCloud