linux-kernel - Re: objtool segfault in 5.10 kernels with binutils-2.36.1

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Date:   Sat, 13 Feb 2021 09:38:45 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     Ken Moffat <zarniwhoop73@...glemail.com>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: objtool segfault in 5.10 kernels with binutils-2.36.1

On Fri, Feb 12, 2021 at 05:51:45PM -0600, Josh Poimboeuf wrote:
> On Thu, Feb 11, 2021 at 05:16:56PM +0000, Ken Moffat wrote:
> > Hi,
> > 
> > in 5.10 kernels up to and including 5.10.15 when trying to build the
> > kernel for an x86_64 skylake using binutils-2.36.1, gcc-10.2 and
> > glibic-2.33 I get a segfault in objtool if the orc unwinder is
> > enabled.
> > 
> > This has already been fixed in 5.11 by ''objtool: Fix seg fault with
> > Clang non-section symbols'
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=44f6a7c0755d8dd453c70557e11687bb080a6f21
> > 
> > So can this be added to 5.10 stable, please ?
> > 
> > Please CC me as I am no-longer subscribed.
> 
> Hi Ken,
> 
> I agree that needs to be backported (and my bad for not marking it as
> stable to begin with).
> 
> Greg, this also came up in another thread, are you pulling that one in,
> or do you want me to send it to stable list?

I will pull it in after the next release happens in a few hours, thanks.

greg k-h