linux-kernel - Re: [perf_swevent_add] WARNING: CPU: 0 PID: 393 at kernel/events/core.c:7735 perf_swevent

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Date:   Tue, 14 Nov 2017 11:19:24 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Fengguang Wu <fengguang.wu@...el.com>
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        David Carrillo-Cisneros <davidcc@...gle.com>,
        Tejun Heo <tj@...nel.org>,
        Hari Bathini <hbathini@...ux.vnet.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [perf_swevent_add] WARNING: CPU: 0 PID: 393 at
 kernel/events/core.c:7735 perf_swevent_add+0xe0/0x14f

On Mon, Nov 13, 2017 at 10:47:12PM +0800, Fengguang Wu wrote:
> On Mon, Nov 13, 2017 at 03:36:05PM +0100, Jiri Olsa wrote:
> > On Sat, Nov 11, 2017 at 06:37:58PM +0800, Fengguang Wu wrote:
> > > Hello,
> > > 
> > > FYI this happens in 4.14.0-rc8, however not a new bug.
> > 
> > SNIP
> > 
> > > #!/bin/bash
> > > 
> > > kernel=$1
> > > initrd=initrd.img
> > > 
> > > wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/raw/master/initrd.img/$initrd
> > 
> > 2017-11-13 15:34:14 ERROR 404: Not Found.
> 
> Sorry, please replace the 2 lines with
> 
>        initrd=quantal-core-x86_64.cgz
> 
>        wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/raw/master/quantal/$initrd
> 

reproduced, thanks

jirka