Re: ftrace: sorttable unable to sort ELF64 on 32-bit host

[Greg KH <gregkh@linuxfoundation.org>]

On Mon, Mar 24, 2025 at 03:07:03PM -0400, Steven Rostedt wrote:
> On Mon, 24 Mar 2025 11:52:33 -0700
> Greg KH <gregkh@linuxfoundation.org> wrote:
> 
> > <formletter>
> > 
> > This is not the correct way to submit patches for inclusion in the
> > stable kernel tree.  Please read:
> >     https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
> > for how to do this properly.
> > 
> > </formletter>
> 
> Hi Greg,
> 
> This isn't a patch submission. It's more of a question if something should
> be backported because it happens to fix a long standing issue.

Sorry, that wasn't obvious to me.

> It appears that the ftrace mcount sorttable code was broken if you built a
> 64 bit kernel on a 32 bit machine. I'm guessing it was broken since 5.17?
> A recent update to this code coincidentally fixes that issue. That update
> landed in 6.14. The question is, is it fine to backport the changes that
> fix this? It may not be totally trivial to do so, but I could likely just
> backport the changes that address this issue.

It's up to the maintainer of the subsytem as to what they wish to see
happen.  I will always defer to them as they are the ones that have to
deal with emails from users :)

thanks,

greg k-h