Hi Since I upgraded to 2.6.35-rc2+ I'm seeing "swapper:1 freeing invalid memtype bf799000-bf79a000" in dmesg at every boot. dump_stack() in free_memtype() revealed it comes from ACPI. I thought you might be interested. Jun 09 21:23:46 [kernel] [ 1.716870] ACPI: EC: Look up EC in DSDT Jun 09 21:23:46 [kernel] [ 1.722404] ACPI: Executed 1 blocks of module-level executable AML code Jun 09 21:23:46 [kernel] [ 1.758053] ACPI: SSDT 00000000bf7980c0 00403 (v01 DpgPmm P001Ist 00000011 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.759941] ACPI: Dynamic OEM Table Load: Jun 09 21:23:46 [kernel] [ 1.760228] ACPI: SSDT (null) 00403 (v01 DpgPmm P001Ist 00000011 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.761466] ACPI: SSDT 00000000bf7984d0 00403 (v01 DpgPmm P002Ist 00000012 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.763342] ACPI: Dynamic OEM Table Load: Jun 09 21:23:46 [kernel] [ 1.763629] ACPI: SSDT (null) 00403 (v01 DpgPmm P002Ist 00000012 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.764835] ACPI: SSDT 00000000bf7988e0 00403 (v01 DpgPmm P003Ist 00000012 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.766728] ACPI: Dynamic OEM Table Load: Jun 09 21:23:46 [kernel] [ 1.767015] ACPI: SSDT (null) 00403 (v01 DpgPmm P003Ist 00000012 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.768223] ACPI: SSDT 00000000bf798cf0 00403 (v01 DpgPmm P004Ist 00000012 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.770142] ACPI: Dynamic OEM Table Load: Jun 09 21:23:46 [kernel] [ 1.770429] ACPI: SSDT (null) 00403 (v01 DpgPmm P004Ist 00000012 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.771630] ACPI: SSDT 00000000bf799100 00403 (v01 DpgPmm P005Ist 00000012 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.773528] ACPI: Dynamic OEM Table Load: Jun 09 21:23:46 [kernel] [ 1.773815] ACPI: SSDT (null) 00403 (v01 DpgPmm P005Ist 00000012 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.774338] swapper:1 freeing invalid memtype bf799000-bf79a000 Jun 09 21:23:46 [kernel] [ 1.774559] Pid: 1, comm: swapper Not tainted 2.6.35-rc2+ #362 Jun 09 21:23:46 [kernel] [ 1.774778] Call Trace: Jun 09 21:23:46 [kernel] [ 1.775215] [<ffffffff8104f147>] iounmap+0xa7/0xca Jun 09 21:23:46 [kernel] [ 1.775435] [<ffffffff8142caca>] acpi_os_unmap_memory+0x12/0x1b Jun 09 21:23:46 [kernel] [ 1.775656] [<ffffffff8124f159>] acpi_ev_system_memory_region_setup+0x3b/0x19a Jun 09 21:23:46 [kernel] [ 1.776054] [<ffffffff81267dfe>] acpi_ut_delete_internal_obj+0x2e2/0x3e9 Jun 09 21:23:46 [kernel] [ 1.776277] [<ffffffff81268092>] acpi_ut_update_ref_count+0x18d/0x1dd Jun 09 21:23:46 [kernel] [ 1.776499] [<ffffffff81268205>] acpi_ut_update_object_reference+0x123/0x19a Jun 09 21:23:46 [kernel] [ 1.776723] [<ffffffff810950cd>] ? trace_hardirqs_on+0xd/0xf Jun 09 21:23:46 [kernel] [ 1.776944] [<ffffffff812682e1>] acpi_ut_remove_reference+0x65/0x6c Jun 09 21:23:46 [kernel] [ 1.777167] [<ffffffff8125e743>] acpi_ns_detach_object+0xaf/0xb8 Jun 09 21:23:46 [kernel] [ 1.777388] [<ffffffff8125beb0>] ? acpi_ns_remove_node+0x5e/0x62 Jun 09 21:23:46 [kernel] [ 1.777610] [<ffffffff8125bf36>] acpi_ns_delete_namespace_by_owner+0x82/0xe7 Jun 09 21:23:46 [kernel] [ 1.777834] [<ffffffff81249d79>] acpi_ds_terminate_control_method+0x7a/0x108 Jun 09 21:23:46 [kernel] [ 1.778057] [<ffffffff81260bb5>] acpi_ps_parse_aml+0x24e/0x3c1 Jun 09 21:23:46 [kernel] [ 1.778277] [<ffffffff81262461>] acpi_ps_execute_method+0x213/0x322 Jun 09 21:23:46 [kernel] [ 1.778504] [<ffffffff8125c16c>] acpi_ns_evaluate+0x18c/0x2c9 Jun 09 21:23:46 [kernel] [ 1.778726] [<ffffffff8125b9c9>] acpi_evaluate_object+0x272/0x3d1 Jun 09 21:23:46 [kernel] [ 1.778947] [<ffffffff8109509c>] ? trace_hardirqs_on_caller+0x118/0x13c Jun 09 21:23:46 [kernel] [ 1.779170] [<ffffffff81241229>] acpi_processor_set_pdc+0x3c8/0x480 Jun 09 21:23:46 [kernel] [ 1.779391] [<ffffffff81241575>] early_init_pdc+0xa2/0xa5 Jun 09 21:23:46 [kernel] [ 1.779612] [<ffffffff8125e992>] acpi_ns_walk_namespace+0xb9/0x187 Jun 09 21:23:46 [kernel] [ 1.779834] [<ffffffff812414d3>] ? early_init_pdc+0x0/0xa5 Jun 09 21:23:46 [kernel] [ 1.780053] [<ffffffff812414d3>] ? early_init_pdc+0x0/0xa5 Jun 09 21:23:46 [kernel] [ 1.780273] [<ffffffff8125b71d>] acpi_walk_namespace+0x85/0xbf Jun 09 21:23:46 [kernel] [ 1.780496] [<ffffffff818d1d46>] acpi_early_processor_set_pdc+0x3a/0x3c Jun 09 21:23:46 [kernel] [ 1.780718] [<ffffffff818d19c5>] acpi_bus_init+0xb5/0x1e0 Jun 09 21:23:46 [kernel] [ 1.780939] [<ffffffff8120a428>] ? kobject_create_and_add+0x37/0x66 Jun 09 21:23:46 [kernel] [ 1.781161] [<ffffffff818d1af0>] ? acpi_init+0x0/0x120 Jun 09 21:23:46 [kernel] [ 1.781380] [<ffffffff818d1af0>] ? acpi_init+0x0/0x120 Jun 09 21:23:46 [kernel] [ 1.781599] [<ffffffff818d1b61>] acpi_init+0x71/0x120 Jun 09 21:23:46 [kernel] [ 1.781818] [<ffffffff818d1af0>] ? acpi_init+0x0/0x120 Jun 09 21:23:46 [kernel] [ 1.782038] [<ffffffff810001ef>] do_one_initcall+0x59/0x14e Jun 09 21:23:46 [kernel] [ 1.782260] [<ffffffff818b269a>] kernel_init+0x154/0x1dd Jun 09 21:23:46 [kernel] [ 1.782481] [<ffffffff81030b14>] kernel_thread_helper+0x4/0x10 Jun 09 21:23:46 [kernel] [ 1.782703] [<ffffffff8143d2b5>] ? preempt_schedule+0x3b/0x4b Jun 09 21:23:46 [kernel] [ 1.782924] [<ffffffff81440600>] ? restore_args+0x0/0x30 Jun 09 21:23:46 [kernel] [ 1.783144] [<ffffffff818b2546>] ? kernel_init+0x0/0x1dd Jun 09 21:23:46 [kernel] [ 1.783364] [<ffffffff81030b10>] ? kernel_thread_helper+0x0/0x10 Jun 09 21:23:46 [kernel] [ 1.784268] ACPI: SSDT 00000000bf799510 00403 (v01 DpgPmm P006Ist 00000012 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.786161] ACPI: Dynamic OEM Table Load: Jun 09 21:23:46 [kernel] [ 1.786448] ACPI: SSDT (null) 00403 (v01 DpgPmm P006Ist 00000012 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.787649] ACPI: SSDT 00000000bf799920 00403 (v01 DpgPmm P007Ist 00000012 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.789555] ACPI: Dynamic OEM Table Load: Jun 09 21:23:46 [kernel] [ 1.789843] ACPI: SSDT (null) 00403 (v01 DpgPmm P007Ist 00000012 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.791053] ACPI: SSDT 00000000bf799d30 00403 (v01 DpgPmm P008Ist 00000012 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.792966] ACPI: Dynamic OEM Table Load: Jun 09 21:23:46 [kernel] [ 1.793253] ACPI: SSDT (null) 00403 (v01 DpgPmm P008Ist 00000012 INTL 20060113) Jun 09 21:23:46 [kernel] [ 1.793923] ACPI: Interpreter enabled Jun 09 21:23:46 [kernel] [ 1.794140] ACPI: (supports S0 S1 S3 S5) Jun 09 21:23:46 [kernel] [ 1.794537] ACPI: Using IOAPIC for interrupt routing Jun 09 21:23:46 [kernel] [ 1.794817] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0xe0000000-0xefffffff] (base 0xe0000000) Jun 09 21:23:46 [kernel] [ 1.799188] PCI: MMCONFIG at [mem 0xe0000000-0xefffffff] reserved in ACPI motherboard resources Jun 09 21:23:46 [kernel] [ 1.868985] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug Jun 09 21:23:46 [kernel] [ 1.869615] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) Full dmesg and .config can be found at http://kadu.net/~joi/kernel/2010.06.09/ -- 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