Received-SPF: pass (google.com: domain of linux-kernel+bounces-122475-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99;
Precedence: bulk
MIME-Version: 1.0
References: <202403221630.2692c998-oliver.sang@intel.com> <20240324142532.GAZgA33M_u1lW_E_1n@fat_crate.local>
 <CAMj1kXE97o_T61AJ6wRAOpUvzon-45fnsT2dGB0GBP1x7bfGaw@mail.gmail.com>
 <ZgKH0LbdN0aDyvRe@xsang-OptiPlex-9020> <CAMj1kXG2D8cwtXTqjepm30B9X9KQD_q2XMDAA522mv9z-5_-ug@mail.gmail.com>
 <ZgUGtcJ1ZtQMhSHg@xsang-OptiPlex-9020>
In-Reply-To: <ZgUGtcJ1ZtQMhSHg@xsang-OptiPlex-9020>
From: Ard Biesheuvel <ardb@kernel.org>
Date: Thu, 28 Mar 2024 08:54:38 +0200
Message-ID: <CAMj1kXHYur1KVumT-n-8gF0jxBN606dwSHxk6fHCsrTYE+2mrg@mail.gmail.com>
Subject: Re: [linus:master] [x86/sme] 48204aba80: BUG:kernel_failed_in_early-boot_stage,last_printk:Booting_the_kernel(entry_offset:#)
To: Oliver Sang <oliver.sang@intel.com>
Cc: Borislav Petkov <bp@alien8.de>, oe-lkp@lists.linux.dev, lkp@intel.com, 
	linux-kernel@vger.kernel.org, Tom Lendacky <thomas.lendacky@amd.com>
Content-Type: text/plain; charset="UTF-8"

On Thu, 28 Mar 2024 at 07:57, Oliver Sang <oliver.sang@intel.com> wrote:
>
..
> regarding this early-boot failure issue, by more tests, we double it may
> relate with 3 configs. as we shared in [1], they are set as below when the
> kernel run into early-boot failure:
>
> # CONFIG_INIT_STACK_NONE is not set
> CONFIG_INIT_STACK_ALL_ZERO=y
> CONFIG_GCC_PLUGIN_STACKLEAK=y
>
>
> the early-boot failure issue will _disappear_ by making either one of two
> changes:
>
> (1)
>  CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO=y
> -# CONFIG_INIT_STACK_NONE is not set
> +CONFIG_INIT_STACK_NONE=y
>  # CONFIG_INIT_STACK_ALL_PATTERN is not set
> -CONFIG_INIT_STACK_ALL_ZERO=y
> +# CONFIG_INIT_STACK_ALL_ZERO is not set
>  CONFIG_GCC_PLUGIN_STACKLEAK=y
>
>
> (2)
>  CONFIG_INIT_STACK_ALL_ZERO=y
> -CONFIG_GCC_PLUGIN_STACKLEAK=y
> -# CONFIG_GCC_PLUGIN_STACKLEAK_VERBOSE is not set
> -CONFIG_STACKLEAK_TRACK_MIN_SIZE=100
> -# CONFIG_STACKLEAK_METRICS is not set
> -# CONFIG_STACKLEAK_RUNTIME_DISABLE is not set
> +# CONFIG_GCC_PLUGIN_STACKLEAK is not set
>  CONFIG_INIT_ON_ALLOC_DEFAULT_ON=y
>

Thanks, this was very useful in narrowing it down. I sent out a fix
for the stackleak plugin.