linux-kernel - Re: Broken kretprobe stack traces

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Message-ID: <20210303153740.4c0cc0c5@gandalf.local.home>
Date:   Wed, 3 Mar 2021 15:37:40 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     "Daniel Xu" <dxu@...uu.xyz>
Cc:     "Masami Hiramatsu" <mhiramat@...nel.org>,
        linux-kernel@...r.kernel.org,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>, kuba@...nel.org
Subject: Re: Broken kretprobe stack traces

On Wed, 03 Mar 2021 12:13:08 -0800
"Daniel Xu" <dxu@...uu.xyz> wrote:

> On Wed, Mar 3, 2021, at 11:58 AM, Daniel Xu wrote:
> > On Wed, Mar 03, 2021 at 09:26:04AM -0500, Steven Rostedt wrote:  
> > > On Wed, 3 Mar 2021 13:48:28 +0900
> > > Masami Hiramatsu <mhiramat@...nel.org> wrote:
> > >   
> > > >   
> > > > > 
> > > > > I think (can't prove) this used to work:    
> > > 
> > > Would be good to find out if it did.  
> > 
> > I'm installing some older kernels now to check. Will report back.  
> 
> Yep, works in 4.11. So there was a regression somewhere.

Care to bisect? ;-)

-- Steve