diff options
| author | Kees Cook <kees@kernel.org> | 2025-07-23 22:50:28 -0700 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2025-07-26 14:28:35 -0700 |
| commit | a8f0b1f8ef628bd1003eed650862836e97b89fdd (patch) | |
| tree | f3c9973b97d3076e8c73d0b1db53236b1518b088 /scripts | |
| parent | 6676fd3c99b016b9102c584e8b6dfcfad4fa059e (diff) | |
kstack_erase: Support Clang stack depth tracking
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>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/Makefile.kstack_erase | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/scripts/Makefile.kstack_erase b/scripts/Makefile.kstack_erase index 5223d3a35817..c7bc2379e113 100644 --- a/scripts/Makefile.kstack_erase +++ b/scripts/Makefile.kstack_erase @@ -8,6 +8,12 @@ kstack-erase-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK_VERBOSE) += -fplugin-arg-stack DISABLE_KSTACK_ERASE := -fplugin-arg-stackleak_plugin-disable endif +ifdef CONFIG_CC_IS_CLANG +kstack-erase-cflags-y += -fsanitize-coverage=stack-depth +kstack-erase-cflags-y += -fsanitize-coverage-stack-depth-callback-min=$(CONFIG_KSTACK_ERASE_TRACK_MIN_SIZE) +DISABLE_KSTACK_ERASE := -fno-sanitize-coverage=stack-depth +endif + KSTACK_ERASE_CFLAGS := $(kstack-erase-cflags-y) export STACKLEAK_CFLAGS DISABLE_KSTACK_ERASE |