linux-kernel - Re: [linux-next:master] [init] b8de39bd1b: BUG:kernel_failed_in_early-boot_stage,last_printk:early_console_in_setup

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Date: Mon, 22 Apr 2024 10:29:42 +0200
From: Nam Cao <namcao@...utronix.de>
To: kernel test robot <oliver.sang@...el.com>
Cc: oe-lkp@...ts.linux.dev, lkp@...el.com,
	Linux Memory Management List <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Björn Töpel <bjorn@...nel.org>,
	Mike Rapoport <rppt@...nel.org>, Andreas Dilger <adilger@...ger.ca>,
	Arnd Bergmann <arnd@...db.de>, Changbin Du <changbin.du@...wei.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Ingo Molnar <mingo@...nel.org>,
	Krister Johansen <kjlx@...pleofstupid.com>,
	Luis Chamberlain <mcgrof@...nel.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>, Tejun Heo <tj@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org
Subject: Re: [linux-next:master] [init]  b8de39bd1b:
 BUG:kernel_failed_in_early-boot_stage,last_printk:early_console_in_setup_code

On Mon, Apr 22, 2024 at 03:45:00PM +0800, kernel test robot wrote:
> kernel test robot noticed "BUG:kernel_failed_in_early-boot_stage,last_printk:early_console_in_setup_code" on:
> 
> commit: b8de39bd1b76faffe7cd91e148a6d7d9bf4e38f7 ("init: fix allocated page overlapping with PTR_ERR")
> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master

I can reproduce the problem. I rebased this commit onto v6.8.7, I can still
observe the problem.

No immediate idea what is the problem. Backtrace from gdb goes crazy:

(gdb) bt
#0  0xffffffffb2074ded in ?? ()
#1  0x00000000000000a1 in ?? ()
#2  0x00000000000000a1 in ?? ()
#3  0x000000007ffff000 in ?? ()
#4  0x00000000543ff000 in ?? ()
#5  0x0000000000000000 in ?? ()

@akpm: drop this commit until this is figured out?

Best regards,
Nam