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a8f0b1f8ef
Wire up CONFIG_KSTACK_ERASE to Clang 21's new stack depth tracking callback[1] option. Link: https://clang.llvm.org/docs/SanitizerCoverage.html#tracing-stack-depth [1] Acked-by: Nicolas Schier <n.schier@avm.de> Link: https://lore.kernel.org/r/20250724055029.3623499-4-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org>
22 lines
897 B
Makefile
22 lines
897 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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ifdef CONFIG_GCC_PLUGIN_STACKLEAK
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kstack-erase-cflags-y += -fplugin=$(objtree)/scripts/gcc-plugins/stackleak_plugin.so
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kstack-erase-cflags-y += -fplugin-arg-stackleak_plugin-track-min-size=$(CONFIG_KSTACK_ERASE_TRACK_MIN_SIZE)
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kstack-erase-cflags-y += -fplugin-arg-stackleak_plugin-arch=$(SRCARCH)
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kstack-erase-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK_VERBOSE) += -fplugin-arg-stackleak_plugin-verbose
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DISABLE_KSTACK_ERASE := -fplugin-arg-stackleak_plugin-disable
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endif
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ifdef CONFIG_CC_IS_CLANG
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kstack-erase-cflags-y += -fsanitize-coverage=stack-depth
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kstack-erase-cflags-y += -fsanitize-coverage-stack-depth-callback-min=$(CONFIG_KSTACK_ERASE_TRACK_MIN_SIZE)
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DISABLE_KSTACK_ERASE := -fno-sanitize-coverage=stack-depth
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endif
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KSTACK_ERASE_CFLAGS := $(kstack-erase-cflags-y)
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export STACKLEAK_CFLAGS DISABLE_KSTACK_ERASE
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KBUILD_CFLAGS += $(KSTACK_ERASE_CFLAGS)
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