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Message-ID: <563b8f82-9865-40ae-85d3-055b3bcda7d6@quicinc.com>
Date: Tue, 18 Jun 2024 16:41:01 -0700
From: Jeff Johnson <quic_jjohnson@...cinc.com>
To: Kees Cook <kees@...nel.org>
CC: <linux-hardening@...r.kernel.org>,
        open list
	<linux-kernel@...r.kernel.org>
Subject: mips gcc plugin issues

I'm trying to do an allmodconfig build for ARCH=mips using:
https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/13.2.0/x86_64-gcc-13.2.0-nolibc-mips-linux.tar.gz

This build dies quickly with:
  CC      scripts/mod/empty.o
cc1: error: cannot load plugin ./scripts/gcc-plugins/randomize_layout_plugin.so: ./scripts/gcc-plugins/randomize_layout_plugin.so: undefined symbol: _ZNK6frange6acceptERK14vrange_visitor
cc1: error: cannot load plugin ./scripts/gcc-plugins/latent_entropy_plugin.so: ./scripts/gcc-plugins/latent_entropy_plugin.so: undefined symbol: _ZNK6frange6acceptERK14vrange_visitor
  CC      scripts/mod/devicetable-offsets.s
make[2]: *** [scripts/Makefile.build:244: scripts/mod/empty.o] Error 1
make[2]: *** Waiting for unfinished jobs....
cc1: error: cannot load plugin ./scripts/gcc-plugins/randomize_layout_plugin.so: ./scripts/gcc-plugins/randomize_layout_plugin.so: undefined symbol: _ZNK6frange6acceptERK14vrange_visitor
cc1: error: cannot load plugin ./scripts/gcc-plugins/latent_entropy_plugin.so: ./scripts/gcc-plugins/latent_entropy_plugin.so: undefined symbol: _ZNK6frange6acceptERK14vrange_visitor
  HDRINST usr/include/linux/usb/tmc.h
make[2]: *** [scripts/Makefile.build:117: scripts/mod/devicetable-offsets.s] Error 1

I see the following in my .config:
CONFIG_HAVE_GCC_PLUGINS=y
CONFIG_GCC_PLUGINS=y
CONFIG_GCC_PLUGIN_LATENT_ENTROPY=y
CONFIG_GCC_PLUGIN_RANDSTRUCT=y

So I'll turn those off, but just want to flag that this issue exists.
Seems either the plugins should work or the allmodconfig should turn them off.

/jeff

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