From 76261fc7d1be3fde06efed859cb10c95b1204055 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 17 Jul 2025 16:25:08 -0700 Subject: stackleak: Split KSTACK_ERASE_CFLAGS from GCC_PLUGINS_CFLAGS In preparation for Clang stack depth tracking for KSTACK_ERASE, split the stackleak-specific cflags out of GCC_PLUGINS_CFLAGS into KSTACK_ERASE_CFLAGS. Link: https://lore.kernel.org/r/20250717232519.2984886-3-kees@kernel.org Signed-off-by: Kees Cook --- scripts/Makefile.kstack_erase | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 scripts/Makefile.kstack_erase (limited to 'scripts/Makefile.kstack_erase') diff --git a/scripts/Makefile.kstack_erase b/scripts/Makefile.kstack_erase new file mode 100644 index 000000000000..5223d3a35817 --- /dev/null +++ b/scripts/Makefile.kstack_erase @@ -0,0 +1,15 @@ +# SPDX-License-Identifier: GPL-2.0 + +ifdef CONFIG_GCC_PLUGIN_STACKLEAK +kstack-erase-cflags-y += -fplugin=$(objtree)/scripts/gcc-plugins/stackleak_plugin.so +kstack-erase-cflags-y += -fplugin-arg-stackleak_plugin-track-min-size=$(CONFIG_KSTACK_ERASE_TRACK_MIN_SIZE) +kstack-erase-cflags-y += -fplugin-arg-stackleak_plugin-arch=$(SRCARCH) +kstack-erase-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK_VERBOSE) += -fplugin-arg-stackleak_plugin-verbose +DISABLE_KSTACK_ERASE := -fplugin-arg-stackleak_plugin-disable +endif + +KSTACK_ERASE_CFLAGS := $(kstack-erase-cflags-y) + +export STACKLEAK_CFLAGS DISABLE_KSTACK_ERASE + +KBUILD_CFLAGS += $(KSTACK_ERASE_CFLAGS) -- cgit v1.2.3