linux-kernel - [ardb:x86-startup-confine-v7] [x86/boot] 7d40dc256f: BUG:kernel_reboot-without-warning_in_test

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Message-ID: <202509022207.56fd97f4-lkp@intel.com>
Date: Tue, 2 Sep 2025 23:03:43 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Ard Biesheuvel <ardb@...nel.org>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
	<xen-devel@...ts.xenproject.org>, <oliver.sang@...el.com>
Subject: [ardb:x86-startup-confine-v7] [x86/boot]  7d40dc256f:
 BUG:kernel_reboot-without-warning_in_test_stage



Hello,

kernel test robot noticed "BUG:kernel_reboot-without-warning_in_test_stage" on:

commit: 7d40dc256faa19a66045c7e3147f387e346d513c ("x86/boot: Move startup code out of __head section")
https://git.kernel.org/cgit/linux/kernel/git/ardb/linux.git x86-startup-confine-v7

in testcase: rcutorture
version: 
with following parameters:

	runtime: 300s
	test: cpuhotplug
	torture_type: tasks



config: i386-randconfig-017-20250829
compiler: gcc-12
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

(please refer to attached dmesg/kmsg for entire log/backtrace)


+-------------------------------------------------+------------+------------+
|                                                 | 7ccec303a5 | 7d40dc256f |
+-------------------------------------------------+------------+------------+
| boot_successes                                  | 12         | 0          |
| boot_failures                                   | 0          | 12         |
| BUG:kernel_reboot-without-warning_in_test_stage | 0          | 12         |
+-------------------------------------------------+------------+------------+


If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202509022207.56fd97f4-lkp@intel.com


[   46.638864][  T218] 2025-08-30 23:52:51 sleep 300
[   46.638874][  T218]
[   57.574765][  T460] tasks-torture: torture_onoff end holdoff
[   57.634414][   T65] smpboot: CPU 1 is now offline
[   57.663199][  T460] smpboot: Booting Node 0 Processor 1 APIC 0x1
BUG: kernel reboot-without-warning in test stage



The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250902/202509022207.56fd97f4-lkp@intel.com



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki