Hi I've converted this bug into a Bugzilla entry here: https://bugzilla.kernel.org/show_bug.cgi?id=197071 Thanks Lv > From: linux-acpi-owner@xxxxxxxxxxxxxxx [mailto:linux-acpi-owner@xxxxxxxxxxxxxxx] On Behalf Of > Subject: ACPI object counter overrun on frequent nvme resets > > Hi all, > > when doing an error injection test with the nvme-pci driver on Linux 4.14 > almost rc2 (820bf5c419e4b85298e5c3001bd1b5be46d60765 plus a few nvme > patches) that does a lot of nvme resets which shut down and re-enable the > PCI device I see a flood of warnings like: > > [ 78.237286] ACPI Warning: Large Reference Count (0x1001) in object ffff88007d702c68, Type=0x1D > (20170728/utdelete-473) > > Throwing in a dump_stack into the path it comes from: > > [ 78.238387] CPU: 0 PID: 286 Comm: kworker/u8:3 Not tainted 4.14.0-rc1+ #134 > [ 78.238998] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 > [ 78.239720] Workqueue: nvme-wq nvme_reset_work > [ 78.239995] Call Trace: > [ 78.239995] dump_stack+0x63/0x83 > [ 78.239995] acpi_ut_update_ref_count+0x2f7/0x2fe > [ 78.239995] acpi_ut_update_object_reference+0x114/0x182 > [ 78.239995] acpi_ut_add_reference+0x1b/0x1e > [ 78.239995] acpi_ds_init_package_element+0x149/0x16e > [ 78.239995] ? acpi_ds_build_internal_object+0xca/0x12c > [ 78.239995] acpi_ds_build_internal_package_obj+0x1b2/0x258 > [ 78.239995] ? acpi_ds_build_internal_package_obj+0x1b2/0x258 > [ 78.239995] acpi_ds_eval_data_object_operands+0xd3/0x123 > [ 78.239995] acpi_ds_exec_end_op+0x288/0x3e1 > [ 78.239995] acpi_ps_parse_loop+0x519/0x57b > [ 78.239995] acpi_ps_parse_aml+0x93/0x29c > [ 78.239995] acpi_ps_execute_method+0x148/0x17f > [ 78.239995] acpi_ns_evaluate+0x1c1/0x24d > [ 78.239995] acpi_ut_evaluate_object+0x72/0x197 > [ 78.239995] acpi_rs_get_prt_method_data+0x21/0x45 > [ 78.239995] acpi_get_irq_routing_table+0x2c/0x30 > [ 78.239995] acpi_pci_irq_find_prt_entry+0x8e/0x2c0 > [ 78.239995] ? irq_get_irq_data+0x9/0x20 > [ 78.239995] ? mp_unmap_irq+0xf/0x70 > [ 78.239995] acpi_pci_irq_lookup+0x26/0x1a0 > [ 78.239995] acpi_pci_irq_enable+0x5b/0x1b0 > [ 78.239995] ? pci_read_config_word+0x22/0x30 > [ 78.239995] pcibios_enable_device+0x28/0x30 > [ 78.239995] do_pci_enable_device+0x5f/0xe0 > [ 78.239995] pci_enable_device_flags+0xc3/0x110 > [ 78.239995] pci_enable_device_mem+0xe/0x10 > [ 78.239995] nvme_reset_work+0x4c/0x1610 > [ 78.239995] ? sched_clock+0x9/0x10 > [ 78.239995] ? sched_clock_local+0x17/0x90 > [ 78.239995] ? _raw_spin_lock+0x9/0x10 > [ 78.239995] ? pick_next_task_fair+0x420/0x690 > [ 78.239995] ? _raw_spin_unlock_irq+0x9/0x20 > [ 78.239995] ? finish_task_switch+0x7b/0x1f0 > [ 78.239995] ? __schedule+0x2d7/0x800 > [ 78.239995] process_one_work+0x1db/0x3e0 > [ 78.239995] worker_thread+0x43/0x3f0 > [ 78.239995] kthread+0x103/0x140 > [ 78.239995] ? process_one_work+0x3e0/0x3e0 > [ 78.239995] ? kthread_create_on_node+0x40/0x40 > [ 78.239995] ret_from_fork+0x25/0x30 > -- > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
