Messages in this thread Patch in this message | | | Date | Fri, 18 Oct 2019 09:10:24 -0700 | Subject | [PATCH 09/18] trace: 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 return address protection.
Signed-off-by: Sami Tolvanen <samitolvanen@google.com> --- kernel/trace/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index e08527f50d2a..b7e5e3bfa0f4 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -161,6 +161,7 @@ config FUNCTION_GRAPH_TRACER depends on HAVE_FUNCTION_GRAPH_TRACER depends on FUNCTION_TRACER depends on !X86_32 || !CC_OPTIMIZE_FOR_SIZE + depends on ROP_PROTECTION_NONE default y help Enable the kernel to trace a function at both its return -- 2.23.0.866.gb869b98d4c-goog
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