================================================================== BUG: KCSAN: data-race in acpi_ut_track_stack_ptr / acpi_ut_value_exit write to 0xffffffff8961d8c8 of 4 bytes by task 6737 on cpu 1: acpi_ut_value_exit+0xe5/0x110 drivers/acpi/acpica/utdebug.c:511 acpi_ns_build_normalized_path+0x409/0x420 drivers/acpi/acpica/nsnames.c:275 acpi_ns_handle_to_pathname+0x115/0x1d0 drivers/acpi/acpica/nsnames.c:162 acpi_rs_create_pci_routing_table+0x41a/0x760 drivers/acpi/acpica/rscreate.c:314 acpi_rs_get_prt_method_data+0xa3/0x100 drivers/acpi/acpica/rsutils.c:456 acpi_get_irq_routing_table+0x98/0xe0 drivers/acpi/acpica/rsxface.c:137 acpi_pci_irq_find_prt_entry+0xb3/0x6e0 drivers/acpi/pci_irq.c:215 acpi_pci_irq_lookup+0x3e/0x330 drivers/acpi/pci_irq.c:299 acpi_pci_irq_enable+0x13a/0x3d0 drivers/acpi/pci_irq.c:414 pcibios_enable_device+0x88/0xa0 arch/x86/pci/common.c:699 do_pci_enable_device+0x152/0x2d0 drivers/pci/pci.c:2031 pci_enable_device_flags+0x348/0x3a0 drivers/pci/pci.c:2122 pci_enable_device+0x1a/0xa0 drivers/pci/pci.c:2155 i801_probe+0x288/0xbf0 drivers/i2c/busses/i2c-i801.c:1573 local_pci_probe drivers/pci/pci-driver.c:354 [inline] pci_call_probe drivers/pci/pci-driver.c:416 [inline] __pci_device_probe drivers/pci/pci-driver.c:478 [inline] pci_device_probe+0x2a3/0x530 drivers/pci/pci-driver.c:512 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x1ba/0x600 drivers/base/dd.c:706 __driver_probe_device+0x14f/0x1c0 drivers/base/dd.c:868 driver_probe_device+0x37/0x2f0 drivers/base/dd.c:898 __driver_attach_async_helper+0xb6/0x130 drivers/base/dd.c:1224 async_run_entry_fn+0x52/0x180 kernel/async.c:129 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x56a/0xa50 kernel/workqueue.c:3479 worker_thread+0x569/0x750 kernel/workqueue.c:3560 kthread+0x223/0x270 kernel/kthread.c:436 ret_from_fork+0x146/0x330 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 read to 0xffffffff8961d8c8 of 4 bytes by task 6723 on cpu 0: acpi_ut_track_stack_ptr+0x5f/0xd0 drivers/acpi/acpica/utdebug.c:73 acpi_ut_push_generic_state+0x19/0x40 drivers/acpi/acpica/utstate.c:30 acpi_ut_create_update_state_and_push+0x42/0x70 drivers/acpi/acpica/utmisc.c:177 acpi_ut_update_object_reference+0x1eb/0x560 drivers/acpi/acpica/utdelete.c:563 acpi_ut_add_reference+0xd5/0xe0 drivers/acpi/acpica/utdelete.c:694 acpi_ex_resolve_node_to_value+0x760/0x770 drivers/acpi/acpica/exresnte.c:-1 acpi_ns_evaluate+0x746/0xac0 drivers/acpi/acpica/nseval.c:238 acpi_ut_evaluate_object+0xa7/0x420 drivers/acpi/acpica/uteval.c:60 acpi_rs_get_prt_method_data+0x6c/0x100 drivers/acpi/acpica/rsutils.c:446 acpi_get_irq_routing_table+0x98/0xe0 drivers/acpi/acpica/rsxface.c:137 acpi_pci_irq_find_prt_entry+0xb3/0x6e0 drivers/acpi/pci_irq.c:215 acpi_pci_irq_lookup+0x3e/0x330 drivers/acpi/pci_irq.c:299 acpi_pci_irq_enable+0x13a/0x3d0 drivers/acpi/pci_irq.c:414 pcibios_enable_device+0x88/0xa0 arch/x86/pci/common.c:699 do_pci_enable_device+0x152/0x2d0 drivers/pci/pci.c:2031 pci_enable_device_flags+0x348/0x3a0 drivers/pci/pci.c:2122 pci_enable_device+0x1a/0xa0 drivers/pci/pci.c:2155 i801_probe+0x288/0xbf0 drivers/i2c/busses/i2c-i801.c:1573 local_pci_probe drivers/pci/pci-driver.c:354 [inline] pci_call_probe drivers/pci/pci-driver.c:416 [inline] __pci_device_probe drivers/pci/pci-driver.c:478 [inline] pci_device_probe+0x2a3/0x530 drivers/pci/pci-driver.c:512 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x1ba/0x600 drivers/base/dd.c:706 __driver_probe_device+0x14f/0x1c0 drivers/base/dd.c:868 driver_probe_device+0x37/0x2f0 drivers/base/dd.c:898 __driver_attach_async_helper+0xb6/0x130 drivers/base/dd.c:1224 async_run_entry_fn+0x52/0x180 kernel/async.c:129 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x56a/0xa50 kernel/workqueue.c:3479 worker_thread+0x569/0x750 kernel/workqueue.c:3560 kthread+0x223/0x270 kernel/kthread.c:436 ret_from_fork+0x146/0x330 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 value changed: 0x00000008 -> 0x00000007 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 6723 Comm: kworker/u8:9 Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: async async_run_entry_fn ================================================================== ACPI: \_SB_.LNKA: Enabled at IRQ 11 i801_smbus 0000:00:05.0: SMBus base address uninitialized, upgrade BIOS