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add support for clang Control Flow Integrity (CFI)

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This change adds the CONFIG_CFI_CLANG option, CFI error handling,
and a faster look-up table for cross module CFI checks.

Bug: 67506682
Change-Id: Ic009f0a629b552a0eb16e6d89808c7029e91447d
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
This commit is contained in:
Sami Tolvanen
2017-05-11 15:03:36 -07:00
parent b13cf8585d
commit 00a195e7c0
13 changed files with 444 additions and 2 deletions
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4
kernel/Makefile
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@@ -32,6 +32,9 @@ KASAN_SANITIZE_kcov.o := n
# cond_syscall is currently not LTO compatible
CFLAGS_sys_ni.o = $(DISABLE_LTO)
# Don't instrument error handlers
CFLAGS_cfi.o = $(DISABLE_CFI_CLANG)
obj-y += sched/
obj-y += locking/
obj-y += power/
@@ -101,6 +104,7 @@ obj-$(CONFIG_TRACEPOINTS) += trace/
obj-$(CONFIG_IRQ_WORK) += irq_work.o
obj-$(CONFIG_CPU_PM) += cpu_pm.o
obj-$(CONFIG_BPF) += bpf/
obj-$(CONFIG_CFI_CLANG) += cfi.o
obj-$(CONFIG_PERF_EVENTS) += events/