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Commit e675b8a5 authored by Sami Tolvanen's avatar Sami Tolvanen Committed by Matthias Maennich
Browse files

ANDROID: kbuild: disable GCOV with CFI 



With GCOV enabled, LLVM generates calls to compiler-generated
__llvm_gcov_* functions, but doesn't add them to the CFI jump
table, which trips indirect call checking. Work around the issue
by disabling CFI when GCOV_KERNEL is enabled.

Bug: 169124292
Change-Id: Ifd60cd9eda2bcdd86838ac5ce41bb0dbc00d602f
Signed-off-by: default avatarSami Tolvanen <samitolvanen@google.com>
(cherry picked from commit 93a4197bc23a4a6967ff0592d07f3cf4cd69b1d6)
parent 39133635

arch/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -605,6 +605,7 @@ endchoice 
config CFI_CLANG

	bool "Use Clang's Control Flow Integrity (CFI)"

	depends on LTO_CLANG && KALLSYMS

	depends on !GCOV_KERNEL

	help

	  This option enables Clang's Control Flow Integrity (CFI), which adds

	  runtime checking for indirect function calls.