linux-kernel - Re: [LKP] Re: [x86/mm/64] f154f29085: BUG:kernel_reboot-without-warning_in_boot_stage

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Date:   Thu, 6 Jan 2022 14:56:51 +0800
From:   Yin Fengwei <fengwei.yin@...el.com>
To:     Borislav Petkov <bp@...en8.de>
CC:     Marco Elver <elver@...gle.com>, Carel Si <beibei.si@...el.com>,
        "Joerg Roedel" <jroedel@...e.de>,
        LKML <linux-kernel@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>,
        "lkp@...ts.01.org" <lkp@...ts.01.org>, lkp <lkp@...el.com>,
        "bfields@...ldses.org" <bfields@...ldses.org>,
        "llvm@...ts.linux.dev" <llvm@...ts.linux.dev>
Subject: Re: [LKP] Re: [x86/mm/64] f154f29085:
 BUG:kernel_reboot-without-warning_in_boot_stage - clang KCOV?

Hi Boris,

On 1/5/22 11:21 PM, Borislav Petkov wrote:
> ... yap, and because fixing it this way is easy, I've already queued the
> __no_profile solution:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?h=x86/mm&id=b64dfcde1ca9cb82e38e573753f0c0db8fb841c2
This fixing is good to me.

Just a little concern: if people need to add function in the future,
if he/she is not using clang-14, it's possible that he/she misses the
__no_profile and triggers this kind of issue again.

It may not be a big problem (we will capture it in our test. :)). Thanks.


Regards
Yin, Fengwei

> 
> Thanks.