linux-kernel - Re: objtool failure caused some kernel functionality not working

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Message-ID: <20250208021615.nzvppgspxyttx6eo@jpoimboe>
Date: Fri, 7 Feb 2025 18:16:15 -0800
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: Yonghong Song <yonghong.song@...ux.dev>
Cc: Peter Zijlstra <peterz@...radead.org>, Song Liu <song@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Kernel Team <kernel-team@...com>
Subject: Re: objtool failure caused some kernel functionality not working

On Thu, Jan 30, 2025 at 08:30:52AM -0800, Yonghong Song wrote:
> > I actually have a fix for that, can you try this?
> > 
> >    https://git.kernel.org/pub/scm/linux/kernel/git/jpoimboe/linux.git/commit/?h=objtool/core&id=fbb454b7bb39955c324693e73a5cf7e448632553
> 
> I applied the above fix and now the kernel works fine and /sys/kernel/debug/tracing/available_filter_functions
> can display tracable functions properly.
> 
> The fix is in your personal branch. Any plan to send it to upstream repo?
> 
> The fix also makes sense to me. So
> 
> Tested-by: Yonghong Song <yonghong.song@...ux.dev>
> Acked-by: Yonghong Song <yonghong.song@...ux.dev>

Yes, planning to move that patch into the -tip tree soon.

Peter, are you able to do that?  I have it in my objtool/core branch
right now but maybe it should actually go into tip urgent?

-- 
Josh