linux-kernel - Re: [bisected] clang 15 built kernel fails to boot, stuck at "Loading Linux 6.1.1 ...", gcc 12 built kernel with same config boots fine

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Message-ID: <Y8q9uKuB1trQuIop@hirez.programming.kicks-ass.net>
Date:   Fri, 20 Jan 2023 17:13:44 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     "Erhard F." <erhard_f@...lbox.org>
Cc:     Sandipan Das <sandipan.das@....com>, linux-kernel@...r.kernel.org,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Joao Moreira <joao@...rdrivepizza.com>,
        Masami Hiramatsu <mhiramat@...nel.org>, x86@...nel.org,
        Josh Poimboeuf <jpoimboe@...hat.com>
Subject: Re: [bisected] clang 15 built kernel fails to boot, stuck at
 "Loading Linux 6.1.1 ...", gcc 12 built kernel with same config boots fine

On Fri, Jan 20, 2023 at 04:20:18PM +0100, Erhard F. wrote:

> Success! You nailed it.
> 
> Applied your patch on top of v6.2-rc4 and with that I got ye olde
> Thinkpad A275 with it's borked custom config + clang -Os(stupid)
> booting again. No side effects to be seen so far..

\o/

Patches now live here: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/log/?h=x86/core

Will post once the robots have had a go at it. Thanks for reporting.