diff mbox series

[v2,3/6] riscv: Add ftrace_stub_graph

Message ID 20230710183544.999540-11-samitolvanen@google.com
State New
Headers
Series riscv: KCFI support |

Commit Message

Sami Tolvanen July 10, 2023, 6:35 p.m. UTC 
  Commit 883bbbffa5a4 ("ftrace,kcfi: Separate ftrace_stub() and
ftrace_stub_graph()") added a separate ftrace_stub_graph function for
CFI_CLANG. Add the stub to fix FUNCTION_GRAPH_TRACER compatibility
with CFI.

Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
---
 arch/riscv/kernel/mcount.S | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/arch/riscv/kernel/mcount.S b/arch/riscv/kernel/mcount.S
index 6c9469050f4c..8818a8fa9ff3 100644
--- a/arch/riscv/kernel/mcount.S
+++ b/arch/riscv/kernel/mcount.S
@@ -57,6 +57,10 @@  SYM_TYPED_FUNC_START(ftrace_stub)
 SYM_FUNC_END(ftrace_stub)
 
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
+SYM_TYPED_FUNC_START(ftrace_stub_graph)
+	ret
+SYM_FUNC_END(ftrace_stub_graph)
+
 ENTRY(return_to_handler)
 /*
  * On implementing the frame point test, the ideal way is to compare the