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ARM: 9382/1: ftrace: Define ftrace_stub_graph

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Several architectures defines this stub for the graph tracer,
and it is needed for CFI, as it needs a separate symbol for it.
The trick from include/asm-generic/vmlinux.lds.h to define
ftrace_stub_graph to ftrace_stub isn't working when using CFI.
Commit 883bbbffa5 contains the details.

Tested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Linus Walleij 2024-04-15 09:42:42 +01:00 committed by Russell King (Oracle)
parent 7af5b901e8
commit a9a058031c
1 changed files with 4 additions and 0 deletions
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4
arch/arm/kernel/entry-ftrace.S
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@ -271,6 +271,10 @@ ENTRY(ftrace_stub)
ret lr ret lr
ENDPROC(ftrace_stub) ENDPROC(ftrace_stub)
ENTRY(ftrace_stub_graph)
ret lr
ENDPROC(ftrace_stub_graph)
#ifdef CONFIG_DYNAMIC_FTRACE #ifdef CONFIG_DYNAMIC_FTRACE
__INIT __INIT