linux-kernel - Re: [PATCH] tracing: Fix oops caused by graph notrace filter

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Date:	Wed, 22 Jun 2016 01:33:05 -0400 (EDT)
From:	Chunyu Hu <chuhu@...hat.com>
To:	kbuild test robot <lkp@...el.com>
Cc:	kbuild-all@...org, rostedt@...dmis.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tracing: Fix oops caused by graph notrace filter



----- Original Message -----
> From: "kbuild test robot" <lkp@...el.com>
> To: "Chunyu Hu" <chuhu@...hat.com>
> Cc: kbuild-all@...org, rostedt@...dmis.org, linux-kernel@...r.kernel.org
> Sent: Tuesday, June 21, 2016 8:39:22 PM
> Subject: Re: [PATCH] tracing: Fix oops caused by graph notrace filter
> 
> Hi,
> 
> [auto build test ERROR on tip/perf/core]
> [also build test ERROR on v4.7-rc4 next-20160621]
> [if your patch is applied to the wrong git tree, please drop us a note to
> help improve the system]
> 
> url:
> https://github.com/0day-ci/linux/commits/Chunyu-Hu/tracing-Fix-oops-caused-by-graph-notrace-filter/20160621-191210
> config: i386-randconfig-r0-201625 (attached as .config)
> compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=i386
> 
> All errors (new ones prefixed by >>):
> 
>    kernel/built-in.o: In function `irqsoff_tracer_reset':
> >> trace_irqsoff.c:(.text+0x8d38f): undefined reference to
> >> `ftrace_graph_ignore_notrace'
>    kernel/built-in.o: In function `__irqsoff_tracer_init':
>    trace_irqsoff.c:(.text+0x8d3fa): undefined reference to
>    `ftrace_graph_ignore_notrace'

Sorry, when function_graph tracer is not configured, the symbol is undefined. 
Will add a #ifdef section for it to make it clean at least. Thanks.


> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
> 

-- 
Regards,
Chunyu Hu