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module: Rename debug_align() as strict_align()

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debug_align() was added by commit 84e1c6bb38 ("x86: Add RO/NX
protection for loadable kernel modules")

At that time the config item was CONFIG_DEBUG_SET_MODULE_RONX.

But nowadays it has changed to CONFIG_STRICT_MODULE_RWX and
debug_align() is confusing because it has nothing to do with
DEBUG.

Rename it strict_align()

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
This commit is contained in:
Christophe Leroy 2022-02-23 10:01:01 +01:00 committed by Luis Chamberlain
parent ef505058dc
commit 7337f929d5
3 changed files with 11 additions and 11 deletions
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4
kernel/module/internal.h
View File

@ -26,9 +26,9 @@
* only when CONFIG_STRICT_MODULE_RWX=y
*/
#ifdef CONFIG_STRICT_MODULE_RWX
# define debug_align(X) PAGE_ALIGN(X)
# define strict_align(X) PAGE_ALIGN(X)
#else
# define debug_align(X) (X)
# define strict_align(X) (X)
#endif
extern struct mutex module_mutex;

4
kernel/module/kallsyms.c
View File

@ -139,7 +139,7 @@ void layout_symtab(struct module *mod, struct load_info *info)
mod->core_layout.size += strtab_size;
info->core_typeoffs = mod->core_layout.size;
mod->core_layout.size += ndst * sizeof(char);
mod->core_layout.size = debug_align(mod->core_layout.size);
mod->core_layout.size = strict_align(mod->core_layout.size);
/* Put string table section at end of init part of module. */
strsect->sh_flags |= SHF_ALLOC;
@ -154,7 +154,7 @@ void layout_symtab(struct module *mod, struct load_info *info)
mod->init_layout.size += sizeof(struct mod_kallsyms);
info->init_typeoffs = mod->init_layout.size;
mod->init_layout.size += nsrc * sizeof(char);
mod->init_layout.size = debug_align(mod->init_layout.size);
mod->init_layout.size = strict_align(mod->init_layout.size);
}
/*

14
kernel/module/main.c
View File

@ -1447,19 +1447,19 @@ static void layout_sections(struct module *mod, struct load_info *info)
}
switch (m) {
case 0: /* executable */
mod->core_layout.size = debug_align(mod->core_layout.size);
mod->core_layout.size = strict_align(mod->core_layout.size);
mod->core_layout.text_size = mod->core_layout.size;
break;
case 1: /* RO: text and ro-data */
mod->core_layout.size = debug_align(mod->core_layout.size);
mod->core_layout.size = strict_align(mod->core_layout.size);
mod->core_layout.ro_size = mod->core_layout.size;
break;
case 2: /* RO after init */
mod->core_layout.size = debug_align(mod->core_layout.size);
mod->core_layout.size = strict_align(mod->core_layout.size);
mod->core_layout.ro_after_init_size = mod->core_layout.size;
break;
case 4: /* whole core */
mod->core_layout.size = debug_align(mod->core_layout.size);
mod->core_layout.size = strict_align(mod->core_layout.size);
break;
}
}
@ -1481,11 +1481,11 @@ static void layout_sections(struct module *mod, struct load_info *info)
}
switch (m) {
case 0: /* executable */
mod->init_layout.size = debug_align(mod->init_layout.size);
mod->init_layout.size = strict_align(mod->init_layout.size);
mod->init_layout.text_size = mod->init_layout.size;
break;
case 1: /* RO: text and ro-data */
mod->init_layout.size = debug_align(mod->init_layout.size);
mod->init_layout.size = strict_align(mod->init_layout.size);
mod->init_layout.ro_size = mod->init_layout.size;
break;
case 2:
@ -1496,7 +1496,7 @@ static void layout_sections(struct module *mod, struct load_info *info)
mod->init_layout.ro_after_init_size = mod->init_layout.ro_size;
break;
case 4: /* whole init */
mod->init_layout.size = debug_align(mod->init_layout.size);
mod->init_layout.size = strict_align(mod->init_layout.size);
break;
}
}