All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jiri Olsa <jolsa@redhat.com>
To: John Garry <john.garry@huawei.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>,
	Andi Kleen <ak@linux.intel.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Will Deacon <will.deacon@arm.com>, Linuxarm <linuxarm@huawei.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Ingo Molnar <mingo@redhat.com>,
	Namhyung Kim <namhyung@kernel.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH] perf tools: Store ids for events with their own cpus perf_event__synthesize_event_update_cpus
Date: Tue, 16 Oct 2018 12:47:22 +0200	[thread overview]
Message-ID: <20181016104722.GA18450@krava> (raw)
In-Reply-To: <d1cc40ee-4b09-35a8-86d2-bfc0eb78b9d5@huawei.com>

On Tue, Oct 16, 2018 at 10:10:20AM +0100, John Garry wrote:
> On 15/10/2018 20:15, Arnaldo Carvalho de Melo wrote:
> > Em Fri, Oct 12, 2018 at 02:25:49PM +0100, John Garry escreveu:
> > > On 09/10/2018 11:00, Jiri Olsa wrote:
> > > > On Thu, Oct 04, 2018 at 10:20:39AM +0100, John Garry wrote:
> > > > 
> > > > SNIP
> > > > 
> > > > > > We synthesize an update event that needs to touch the evsel
> > > > > > id array, which is not defined at that time. Fixing this by
> > > > > > forcing the id allocation for events with theeir own cpus.
> > > 
> > > /s/theeir/their/
> > > 
> > > > > > 
> > > > > > Reported-by: John Garry <john.garry@huawei.com>
> > > > > > Link: http://lkml.kernel.org/n/tip-8x4n7o34yheigoxm1jibflm6@git.kernel.org
> > > > > 
> > > > > Tested-by: John Garry <john.garry@huawei.com>
> > > > > 
> > > > > In terms of adding to stable, LT v4.14 is not affected, but 4.18.x is.
> > > > > 
> > > > > Thanks,
> > > > > John
> > > > 
> > > > Arnaldo, could you please pick up this one
> > > > 
> > > 
> > > Just a friendly reminder on this patch.
> > > 
> > > How about re-send with an updated commit message also?
> > 
> > I'll fix up the commit message and apply, thanks.
> > 
> 
> Much appreciated.
> 
> BTW, I think that we should add a fixes tag. But I'm not sure if this patch
> fixes the commit I bisected to earlier (bfd8f72c2778f5bd63d), or that same
> commit just exposed some latent bug.
> 
> Jirka, Andi, Do you know?

yes, that commit moved it to record, which resulted in this fault

Arnaldo, could you please add:
Fixes: bfd8f72c2778 ("perf record: Synthesize unit/scale/... in event update")

thanks,
jirka

WARNING: multiple messages have this Message-ID
From: jolsa@redhat.com (Jiri Olsa)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] perf tools: Store ids for events with their own cpus perf_event__synthesize_event_update_cpus
Date: Tue, 16 Oct 2018 12:47:22 +0200	[thread overview]
Message-ID: <20181016104722.GA18450@krava> (raw)
In-Reply-To: <d1cc40ee-4b09-35a8-86d2-bfc0eb78b9d5@huawei.com>

On Tue, Oct 16, 2018 at 10:10:20AM +0100, John Garry wrote:
> On 15/10/2018 20:15, Arnaldo Carvalho de Melo wrote:
> > Em Fri, Oct 12, 2018 at 02:25:49PM +0100, John Garry escreveu:
> > > On 09/10/2018 11:00, Jiri Olsa wrote:
> > > > On Thu, Oct 04, 2018 at 10:20:39AM +0100, John Garry wrote:
> > > > 
> > > > SNIP
> > > > 
> > > > > > We synthesize an update event that needs to touch the evsel
> > > > > > id array, which is not defined at that time. Fixing this by
> > > > > > forcing the id allocation for events with theeir own cpus.
> > > 
> > > /s/theeir/their/
> > > 
> > > > > > 
> > > > > > Reported-by: John Garry <john.garry@huawei.com>
> > > > > > Link: http://lkml.kernel.org/n/tip-8x4n7o34yheigoxm1jibflm6 at git.kernel.org
> > > > > 
> > > > > Tested-by: John Garry <john.garry@huawei.com>
> > > > > 
> > > > > In terms of adding to stable, LT v4.14 is not affected, but 4.18.x is.
> > > > > 
> > > > > Thanks,
> > > > > John
> > > > 
> > > > Arnaldo, could you please pick up this one
> > > > 
> > > 
> > > Just a friendly reminder on this patch.
> > > 
> > > How about re-send with an updated commit message also?
> > 
> > I'll fix up the commit message and apply, thanks.
> > 
> 
> Much appreciated.
> 
> BTW, I think that we should add a fixes tag. But I'm not sure if this patch
> fixes the commit I bisected to earlier (bfd8f72c2778f5bd63d), or that same
> commit just exposed some latent bug.
> 
> Jirka, Andi, Do you know?

yes, that commit moved it to record, which resulted in this fault

Arnaldo, could you please add:
Fixes: bfd8f72c2778 ("perf record: Synthesize unit/scale/... in event update")

thanks,
jirka

  reply	other threads:[~2018-10-16 10:47 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-25 15:53 perf segmentation fault from NULL dereference John Garry
2018-09-25 15:53 ` John Garry
2018-09-27  3:00 ` Andi Kleen
2018-09-27  3:00   ` Andi Kleen
2018-10-02 10:20   ` John Garry
2018-10-02 10:20     ` John Garry
2018-09-27 16:02 ` Jiri Olsa
2018-09-27 16:02   ` Jiri Olsa
2018-10-02 10:41   ` John Garry
2018-10-02 10:41     ` John Garry
2018-10-02 11:16     ` Jiri Olsa
2018-10-02 11:16       ` Jiri Olsa
2018-10-03 11:36       ` [PATCH] perf tools: Allocate id array in perf_event__synthesize_event_update_cpus Jiri Olsa
2018-10-03 11:36         ` Jiri Olsa
2018-10-03 14:08         ` John Garry
2018-10-03 14:08           ` John Garry
2018-10-03 14:16           ` Jiri Olsa
2018-10-03 14:16             ` Jiri Olsa
2018-10-03 21:20             ` [PATCH] perf tools: Store ids for events with their own cpus perf_event__synthesize_event_update_cpus Jiri Olsa
2018-10-03 21:20               ` Jiri Olsa
2018-10-04  9:20               ` John Garry
2018-10-04  9:20                 ` John Garry
2018-10-09 10:00                 ` Jiri Olsa
2018-10-09 10:00                   ` Jiri Olsa
2018-10-12 13:25                   ` John Garry
2018-10-12 13:25                     ` John Garry
2018-10-15 19:15                     ` Arnaldo Carvalho de Melo
2018-10-15 19:15                       ` Arnaldo Carvalho de Melo
2018-10-16  9:10                       ` John Garry
2018-10-16  9:10                         ` John Garry
2018-10-16 10:47                         ` Jiri Olsa [this message]
2018-10-16 10:47                           ` Jiri Olsa
2018-10-18  6:18               ` [tip:perf/urgent] perf evsel: " tip-bot for Jiri Olsa

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20181016104722.GA18450@krava \
    --to=jolsa@redhat.com \
    --cc=acme@kernel.org \
    --cc=ak@linux.intel.com \
    --cc=alexander.shishkin@linux.intel.com \
    --cc=john.garry@huawei.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linuxarm@huawei.com \
    --cc=mark.rutland@arm.com \
    --cc=mingo@redhat.com \
    --cc=namhyung@kernel.org \
    --cc=peterz@infradead.org \
    --cc=will.deacon@arm.com \
    --subject='Re: [PATCH] perf tools: Store ids for events with their own cpus perf_event__synthesize_event_update_cpus' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.