linux-kernel - Re: [PATCH 0/3] tracing: probeevent: Fix probe argument parser and handler

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Date:   Fri, 18 Jan 2019 08:30:58 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Andreas Ziegler <andreas.ziegler@....de>,
        Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] tracing: probeevent: Fix probe argument parser and
 handler

On Thu, 17 Jan 2019 09:23:02 -0500
Steven Rostedt <rostedt@...dmis.org> wrote:

> On Thu, 17 Jan 2019 22:47:58 +0900
> Masami Hiramatsu <mhiramat@...nel.org> wrote:
> 
> > Hi,
> > 
> > This series fixes several bugs in probe event argument parser
> > and handler routines.
> 
> Hi Masami,
> 
> Can you resend with a "Fixes:" tag to each of the patches, so that it
> is easy to see what patch needs to be backported to which stable kernel
> (or not any stable release if the patch fixes something in 5.0-rc).

OK, I'll resend it with Fixed tags!
And maybe I also need to enhance ftracetest so that it can catch 
this bug.

Thanks,

> 
> Thanks!
> 
> -- Steve
> 
> > 
> > Recently I got 2 issues reported by Andreas, see
> > https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1899098.html
> > 
> > One issue is already fixed by Andreas (Thanks!) but $comm handling
> > issue still exists on uprobe event. [1/3] fixes it.
> > And I found other issues around that, [2/3] is just a trivial cleanup,
> > [3/3] fixes $comm type issue which occurs not only uprobe events but
> > also on kprobe events. Anyway, after this series applied, $comm must
> > be "string" type and not be an array.
> > 
> > Thank you,
> > 
> > ---
> > 
> > Masami Hiramatsu (3):
> >       tracing: uprobes: Re-enable $comm support for uprobe events
> >       tracing: probeevent: Do not accumulate on ret variable
> >       tracing: probeevent: Fix to make the type of $comm string
> > 
> > 
> >  kernel/trace/trace_probe.c      |   13 +++++++------
> >  kernel/trace/trace_probe_tmpl.h |    2 +-
> >  kernel/trace/trace_uprobe.c     |   15 +++++++++++++--
> >  3 files changed, 21 insertions(+), 9 deletions(-)
> > 
> > --
> > Masami Hiramatsu (Linaro) <mhiramat@...nel.org>
> 


-- 
Masami Hiramatsu <mhiramat@...nel.org>