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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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57fbad15c2
In preparation for adding Clang sanitizer coverage stack depth tracking that can support stack depth callbacks: - Add the new top-level CONFIG_KSTACK_ERASE option which will be implemented either with the stackleak GCC plugin, or with the Clang stack depth callback support. - Rename CONFIG_GCC_PLUGIN_STACKLEAK as needed to CONFIG_KSTACK_ERASE, but keep it for anything specific to the GCC plugin itself. - Rename all exposed "STACKLEAK" names and files to "KSTACK_ERASE" (named for what it does rather than what it protects against), but leave as many of the internals alone as possible to avoid even more churn. While here, also split "prev_lowest_stack" into CONFIG_KSTACK_ERASE_METRICS, since that's the only place it is referenced from. Suggested-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20250717232519.2984886-1-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org>
42 lines
1.7 KiB
Makefile
42 lines
1.7 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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gcc-plugin-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) += latent_entropy_plugin.so
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gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) \
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+= -DLATENT_ENTROPY_PLUGIN
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ifdef CONFIG_GCC_PLUGIN_LATENT_ENTROPY
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DISABLE_LATENT_ENTROPY_PLUGIN += -fplugin-arg-latent_entropy_plugin-disable -ULATENT_ENTROPY_PLUGIN
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endif
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export DISABLE_LATENT_ENTROPY_PLUGIN
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gcc-plugin-$(CONFIG_GCC_PLUGIN_STACKLEAK) += stackleak_plugin.so
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gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK) \
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+= -DSTACKLEAK_PLUGIN
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gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK) \
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+= -fplugin-arg-stackleak_plugin-track-min-size=$(CONFIG_KSTACK_ERASE_TRACK_MIN_SIZE)
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gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK) \
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+= -fplugin-arg-stackleak_plugin-arch=$(SRCARCH)
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gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK_VERBOSE) \
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+= -fplugin-arg-stackleak_plugin-verbose
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ifdef CONFIG_GCC_PLUGIN_STACKLEAK
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DISABLE_KSTACK_ERASE += -fplugin-arg-stackleak_plugin-disable
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endif
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export DISABLE_KSTACK_ERASE
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# All the plugin CFLAGS are collected here in case a build target needs to
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# filter them out of the KBUILD_CFLAGS.
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GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y)) -DGCC_PLUGINS
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export GCC_PLUGINS_CFLAGS
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# Add the flags to the build!
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KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
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# Some plugins are enabled outside of this Makefile, but they still need to
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# be included in GCC_PLUGIN so they can get built.
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gcc-plugin-external-$(CONFIG_GCC_PLUGIN_RANDSTRUCT) \
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+= randomize_layout_plugin.so
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# All enabled GCC plugins are collected here for building in
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# scripts/gcc-scripts/Makefile.
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GCC_PLUGIN := $(gcc-plugin-y) $(gcc-plugin-external-y)
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export GCC_PLUGIN
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