linux-kernel - Re: [PATCH] arm64: ftrace: Define ftrace_stub_graph only with FUNCTION_GRAPH

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Message-Id: <166843253456.1481799.5153520671489594909.b4-ty@arm.com>
Date:   Mon, 14 Nov 2022 13:28:58 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Mark Rutland <mark.rutland@....com>,
        Will Deacon <will@...nel.org>
Cc:     Kees Cook <keescook@...omium.org>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Steven Rostedt <rostedt@...dmis.org>,
        Masami Hiramatsu <mhiramat@...nel.org>
Subject: Re: [PATCH] arm64: ftrace: Define ftrace_stub_graph only with FUNCTION_GRAPH_TRACER

On Wed, 9 Nov 2022 19:28:31 +0000, Sami Tolvanen wrote:
> The 0-day bot reports that arm64 builds with CONFIG_CFI_CLANG +
> CONFIG_FTRACE are broken when CONFIG_FUNCTION_GRAPH_TRACER is not
> enabled:
> 
>  ld.lld: error: undefined symbol: __kcfi_typeid_ftrace_stub_graph
>  >>> referenced by entry-ftrace.S:299 (arch/arm64/kernel/entry-ftrace.S:299)
>  >>>               arch/arm64/kernel/entry-ftrace.o:(.text+0x48) in archive vmlinux.a
> 
> [...]

Applied to arm64 (for-next/fixes), thanks!

[1/1] arm64: ftrace: Define ftrace_stub_graph only with FUNCTION_GRAPH_TRACER
      https://git.kernel.org/arm64/c/2598ac6ec493

-- 
Catalin