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

From: kernel test robot <oliver.sang@xxxxxxxxx>

Date: Tue, 2 Sep 2025 23:03:43 +0800

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Cc: <oe-lkp@xxxxxxxxxxxxxxx>, <lkp@xxxxxxxxx>, <linux-kernel@xxxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>, <oliver.sang@xxxxxxxxx>

Delivery-date: Tue, 02 Sep 2025 15:04:09 +0000

List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-lkp/202509022207.56fd97f4-lkp@xxxxxxxxx [ 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@xxxxxxxxx -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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