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

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Message-ID: <20210212235145.t4jgnkyiztrbqlnp@treble>
Date:   Fri, 12 Feb 2021 17:51:45 -0600
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Ken Moffat <zarniwhoop73@...glemail.com>
Cc:     Greg KH <gregkh@...uxfoundation.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: objtool segfault in 5.10 kernels with binutils-2.36.1

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?

-- 
Josh