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| author | Emese Revfy <re.emese@gmail.com> | 2016-05-24 00:11:37 +0200 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.com> | 2016-06-07 22:57:10 +0200 |
| commit | 543c37cb165049c3be24a0d4733e67caa2b33eef (patch) | |
| tree | 91f3e0bb972a6283b607da394268e7e5872292b5 /arch/x86/purgatory | |
| parent | 0dae776c6bf31e779c172753f6e2d6426eb42523 (diff) | |
| download | op-kernel-dev-543c37cb165049c3be24a0d4733e67caa2b33eef.zip op-kernel-dev-543c37cb165049c3be24a0d4733e67caa2b33eef.tar.gz | |
Add sancov plugin
The sancov gcc plugin inserts a __sanitizer_cov_trace_pc() call
at the start of basic blocks.
This plugin is a helper plugin for the kcov feature. It supports
all gcc versions with plugin support (from gcc-4.5 on).
It is based on the gcc commit "Add fuzzing coverage support" by Dmitry Vyukov
(https://gcc.gnu.org/viewcvs/gcc?limit_changes=0&view=revision&revision=231296).
Signed-off-by: Emese Revfy <re.emese@gmail.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Michal Marek <mmarek@suse.com>
Diffstat (limited to 'arch/x86/purgatory')
| -rw-r--r-- | arch/x86/purgatory/Makefile | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile index 12734a9..ac58c16 100644 --- a/arch/x86/purgatory/Makefile +++ b/arch/x86/purgatory/Makefile @@ -8,6 +8,8 @@ PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y)) LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib -z nodefaultlib targets += purgatory.ro +KCOV_INSTRUMENT := n + # Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That # in turn leaves some undefined symbols like __fentry__ in purgatory and not # sure how to relocate those. Like kexec-tools, use custom flags. |
