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author | Kees Cook <keescook@chromium.org> | 2017-08-07 22:29:04 +0200 |
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committer | Kees Cook <keescook@chromium.org> | 2017-08-07 22:29:04 +0200 |
commit | ad05e6ca7b5fcf15ff178da662035ec7718f938c (patch) | |
tree | f4857cd9389a826a2c56a73b798cbe1bb269b81b /scripts/gcc-plugins | |
parent | randstruct: Enable function pointer struct detection (diff) | |
parent | gcc-plugins: structleak: add option to init all vars used as byref args (diff) | |
download | linux-ad05e6ca7b5fcf15ff178da662035ec7718f938c.tar.xz linux-ad05e6ca7b5fcf15ff178da662035ec7718f938c.zip |
Merge branch 'for-next/gcc-plugin/structleak' into for-next/gcc-plugins
Diffstat (limited to 'scripts/gcc-plugins')
-rw-r--r-- | scripts/gcc-plugins/structleak_plugin.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/scripts/gcc-plugins/structleak_plugin.c b/scripts/gcc-plugins/structleak_plugin.c index fa3d7a4b26f2..3f8dd4868178 100644 --- a/scripts/gcc-plugins/structleak_plugin.c +++ b/scripts/gcc-plugins/structleak_plugin.c @@ -16,6 +16,7 @@ * Options: * -fplugin-arg-structleak_plugin-disable * -fplugin-arg-structleak_plugin-verbose + * -fplugin-arg-structleak_plugin-byref-all * * Usage: * $ # for 4.5/4.6/C based 4.7 @@ -42,6 +43,7 @@ static struct plugin_info structleak_plugin_info = { }; static bool verbose; +static bool byref_all; static tree handle_user_attribute(tree *node, tree name, tree args, int flags, bool *no_add_attrs) { @@ -150,7 +152,9 @@ static void initialize(tree var) /* these aren't the 0days you're looking for */ if (verbose) inform(DECL_SOURCE_LOCATION(var), - "userspace variable will be forcibly initialized"); + "%s variable will be forcibly initialized", + (byref_all && TREE_ADDRESSABLE(var)) ? "byref" + : "userspace"); /* build the initializer expression */ initializer = build_constructor(TREE_TYPE(var), NULL); @@ -190,7 +194,8 @@ static unsigned int structleak_execute(void) continue; /* if the type is of interest, examine the variable */ - if (TYPE_USERSPACE(type)) + if (TYPE_USERSPACE(type) || + (byref_all && TREE_ADDRESSABLE(var))) initialize(var); } @@ -232,6 +237,10 @@ __visible int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gc verbose = true; continue; } + if (!strcmp(argv[i].key, "byref-all")) { + byref_all = true; + continue; + } error(G_("unknown option '-fplugin-arg-%s-%s'"), plugin_name, argv[i].key); } |