linux-kernel - Re: [PATCH 07/18 v3] tracing: Add TRACE_DEFINE_ENUM() macro to map enums to their values

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Message-ID: <5530852A.70202@oracle.com>
Date:	Thu, 16 Apr 2015 23:59:38 -0400
From:	Sasha Levin <sasha.levin@...cle.com>
To:	Steven Rostedt <rostedt@...dmis.org>
CC:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Guilherme Cox <cox@...puter.org>,
	Tony Luck <tony.luck@...il.com>,
	Xie XiuQi <xiexiuqi@...wei.com>
Subject: Re: [PATCH 07/18 v3] tracing: Add TRACE_DEFINE_ENUM() macro to map
 enums to their values

On 04/16/2015 11:21 PM, Steven Rostedt wrote:
> On Wed, 15 Apr 2015 20:58:31 -0400
> Sasha Levin <sasha.levin@...cle.com> wrote:
> 
>> > On 04/15/2015 10:05 AM, Steven Rostedt wrote:
>>> > > On Wed, 15 Apr 2015 09:22:37 -0400
>>> > > Sasha Levin <sasha.levin@...cle.com> wrote:
>>> > > 
>>>> > >> Hey Steven,
>>>> > >>
>>>> > >> I'm seeing the following when booting:
>>>> > >>
>>>> > >> [   10.678876] BUG: KASan: out of bounds access in trace_event_enum_update+0xb1d/0xb70 at addr ffffffffa6c4dc68
>>> > > 
>>> > > Thanks for the report. Mind sending me over your config, and which git
>>> > > commit was your HEAD. I can't seem to find 7858a62 from your output.
>> > 
>> > It reproduces on the latest -next kernel. I've attached my config.
>> > 
> What version of gcc is required to run KASan, the highest version I
> have to build kernels with is 4.9.0
> 
> I have no idea what event caused the issue :-/

4.9.2+ is needed for KASan.


Thanks,
Sasha
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