Date: Wed, 21 Aug 2019 00:48:10 +0400 (GST) From: sahara <kpark3469@...il.com> To: kernel-hardening@...ts.openwall.com cc: keescook@...omium.org, re.emese@...il.com, keun-o.park@...kmatter.ae Subject: Re: [PATCH] latent_entropy: make builtin_frame_address implicit >> --- a/scripts/gcc-plugins/latent_entropy_plugin.c >> +++ b/scripts/gcc-plugins/latent_entropy_plugin.c >> @@ -446,6 +446,8 @@ static void init_local_entropy(basic_block bb, tree local_entropy) >> frame_addr = create_var(ptr_type_node, "local_entropy_frameaddr"); >> >> /* 2. local_entropy_frameaddr = __builtin_frame_address() */ >> + if (!builtin_decl_implicit_p(BUILT_IN_FRAME_ADDRESS)) >> + set_builtin_decl_implicit_p(BUILT_IN_FRAME_ADDRESS, true); > >Interesting! Is this aarch64-specific or something that has changed in >more recent GCC versions? > >Thanks! > >-Kees > This is Android's aarch64-specific. Tested and reproduced in 8.1. I haven't seen this problem with Linaro toolchains. - Sahara
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