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HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 1c1wMKW8hy1sMUUaNYulaQR4TJjQqDwvd5RK4wwVdkaQ/LWQ9U2lsGNvUcSDZKzmq5+Jo64bYqY6pojCajtriQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR11MB6369 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "BUG:using_smp_processor_id()in_preemptible" on: commit: 91c8bbe586854e1485070da49806a93599f7636f ("[PATCH 2/2] ACPI: processor: idle: Replace single idle driver with per-CPU model for better hybrid CPU support") url: https://github.com/intel-lab-lkp/linux/commits/Yaxiong-Tian/cpuidle-Add-interface-to-get-cpuidle_driver-by-CPU-ID/20250811-153002 base: https://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.git linux-next patch link: https://lore.kernel.org/all/20250811072723.762608-1-tianyaxiong@kylinos.cn/ patch subject: [PATCH 2/2] ACPI: processor: idle: Replace single idle driver with per-CPU model for better hybrid CPU support in testcase: boot config: i386-randconfig-004-20250812 compiler: gcc-12 test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G (please refer to attached dmesg/kmsg for entire log/backtrace) +--------------------------------------------+------------+------------+ | | 664e805e14 | 91c8bbe586 | +--------------------------------------------+------------+------------+ | BUG:using_smp_processor_id()in_preemptible | 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 | Closes: https://lore.kernel.org/oe-lkp/202508131628.5bcb2ed6-lkp@intel.com [ 9.129755][ T1] BUG: using smp_processor_id() in preemptible [00000000] code: swapper/0/1 [ 9.131211][ T1] caller is debug_smp_processor_id (lib/smp_processor_id.c:61) [ 9.132199][ T1] CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.16.0-rc7-00167-g91c8bbe58685 #1 PREEMPTLAZY 2350dfb9c96e1334949e3e2979039571c1c27191 [ 9.132205][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 9.132208][ T1] Call Trace: [ 9.132212][ T1] dump_stack_lvl (lib/dump_stack.c:123) [ 9.132218][ T1] dump_stack (lib/dump_stack.c:130) [ 9.132224][ T1] check_preemption_disabled (arch/x86/include/asm/preempt.h:85 lib/smp_processor_id.c:53) [ 9.132233][ T1] debug_smp_processor_id (lib/smp_processor_id.c:61) [ 9.132237][ T1] acpi_idle_rescan_dead_smt_siblings (drivers/acpi/processor_idle.c:59) [ 9.132246][ T1] acpi_processor_driver_init (drivers/acpi/processor_driver.c:286) [ 9.132252][ T1] ? acpi_processor_stop (drivers/acpi/processor_driver.c:132) [ 9.132259][ T1] do_one_initcall (init/main.c:1274) [ 9.132263][ T1] ? acpi_fan_driver_init (drivers/acpi/processor_driver.c:251) [ 9.132287][ T1] do_initcalls (init/main.c:1335 init/main.c:1352) [ 9.132297][ T1] kernel_init_freeable (init/main.c:1588) [ 9.132299][ T1] ? rest_init (init/main.c:1466) [ 9.132302][ T1] kernel_init (init/main.c:1476) [ 9.132305][ T1] ret_from_fork (arch/x86/kernel/process.c:154) [ 9.132309][ T1] ? rest_init (init/main.c:1466) [ 9.132315][ T1] ret_from_fork_asm (arch/x86/entry/entry_32.S:737) [ 9.132319][ T1] entry_INT80_32 (arch/x86/entry/entry_32.S:945) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250813/202508131628.5bcb2ed6-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki