This patch avoids that the following is reported during boot with kmemleak and other kernel debugging options enabled: watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [swapper:1] CPU: 0 PID: 1 Comm: swapper Not tainted 4.15.0-rc7-00645-g248c211 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 RIP: 0010:_raw_spin_unlock_irqrestore+0x43/0x51 Call Trace: free_debug_processing+0x273/0x35a __slab_free+0x9d/0x613 qlist_free_all+0x68/0x89 quarantine_reduce+0x17c/0x1ad kasan_kmalloc+0x23/0x8e kmem_cache_alloc+0x143/0x1b4 acpi_ut_create_generic_state+0x54/0x8c acpi_ut_create_update_state+0xe/0x9c acpi_ut_create_update_state_and_push+0x13/0x31 acpi_ut_update_object_reference+0x243/0x40e acpi_ds_clear_operands+0x8c/0xc4 acpi_ds_exec_end_op+0x5d3/0xbef acpi_ps_parse_loop+0x107f/0x1108 acpi_ps_parse_aml+0x1e0/0x6a6 acpi_ps_execute_method+0x48d/0x4ea acpi_ns_evaluate+0x665/0x857 acpi_ut_evaluate_object+0xdc/0x32a acpi_rs_get_prt_method_data+0x64/0xa5 acpi_get_irq_routing_table+0x72/0x94 acpi_pci_irq_find_prt_entry+0x155/0x7f4 acpi_pci_irq_lookup+0x6e/0x46c acpi_pci_irq_enable+0x161/0x461 do_pci_enable_device+0x85/0x143 pci_enable_device_flags+0x206/0x23c virtio_pci_probe+0x17a/0x232 pci_device_probe+0x1a8/0x292 driver_probe_device+0x30c/0x644 __driver_attach+0xfa/0x139 bus_for_each_dev+0xf8/0x12e bus_add_driver+0x29b/0x44e driver_register+0x252/0x2c6 do_one_initcall+0xfc/0x212 kernel_init_freeable+0x25a/0x2ea kernel_init+0x7/0xef ret_from_fork+0x24/0x30 Reported-by: Fenguang Wu <fengguang.wu@xxxxxxxxx> Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxx> Cc: Fenguang Wu <fengguang.wu@xxxxxxxxx> --- drivers/acpi/acpica/psparse.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/acpi/acpica/psparse.c b/drivers/acpi/acpica/psparse.c index 2474ff961294..482d7d5ac021 100644 --- a/drivers/acpi/acpica/psparse.c +++ b/drivers/acpi/acpica/psparse.c @@ -694,6 +694,8 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state) } acpi_ds_delete_walk_state(previous_walk_state); + + cond_resched(); } /* Normal exit */ -- 2.16.2 -- 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
