Messages in this thread Patch in this message | | | Date | Fri, 1 Nov 2019 15:11:44 -0700 | Subject | [PATCH v4 11/17] arm64: disable function graph tracing with SCS | From | Sami Tolvanen <> |
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With CONFIG_FUNCTION_GRAPH_TRACER, function return addresses are modified in ftrace_graph_caller and prepare_ftrace_return to redirect control flow to ftrace_return_to_handler. This is incompatible with SCS.
Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> --- arch/arm64/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index e7b57a8a5531..42867174920f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -148,7 +148,7 @@ config ARM64 select HAVE_FTRACE_MCOUNT_RECORD select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_ERROR_INJECTION - select HAVE_FUNCTION_GRAPH_TRACER + select HAVE_FUNCTION_GRAPH_TRACER if !SHADOW_CALL_STACK select HAVE_GCC_PLUGINS select HAVE_HW_BREAKPOINT if PERF_EVENTS select HAVE_IRQ_TIME_ACCOUNTING -- 2.24.0.rc1.363.gb1bccd3e3d-goog
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