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To: "Moore, Robert" <robert.moore@intel.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.28-rc6-mmotm1126 - acpi AE_AM_INFINITE_LOOP errors..
In-Reply-To: Your message of "Wed, 26 Nov 2008 08:24:26 PST."
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--==_Exmh_1227720950_3623P
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On Wed, 26 Nov 2008 08:24:26 PST, "Moore, Robert" said:
> 
> You could try making the max loop count larger, it is a 32-bit value:
> 
> acconfig.h
> 
> /* Maximum number of While() loop iterations before forced abort */
> 
> -#define ACPI_MAX_LOOP_ITERATIONS        0xFFFF
> +#define ACPI_MAX_LOOP_ITERATIONS        0x00FFFFFF

That "works", for some sub-optimal value of "works".  It does indeed
shut up *some* of the messages, but boot was taking *forever* (or more correctly,
I gave up when it had taken more than 6 minutes to get through the initial
udev and modprobe flurry that usually takes all of 12 seconds or less to
complete.

I'm suspecting that something *else* is busticated in the ACPI code, and
loops that used to complete quickly are missing whatever terminating
condition they had, and the new infinite loop detector is in fact tripping
properly and catching the (newly introduced) error condition?


...
[   13.042567] usb 3-1.2: configuration #1 chosen from 1 choice
[   13.130251] ieee1394: Host added: ID:BUS[0-00:1023]  GUID[4a4fc0000fbe9561]
[   30.702013] Clocksource tsc unstable (delta = -6046116753 ns)
[   41.726022] thermal: gave up waiting for init of module processor.
[   41.741146] thermal: Unknown symbol acpi_processor_set_thermal_limit
[   41.760231] yenta_cardbus 0000:03:01.0: CardBus bridge found [1028:01cc]

It went off to somewhere for 28 seconds trying to init the thermal code..

[   42.213146] vendor=8086 device=27d2
[   42.227850] iwl3945 0000:0c:00.0: PCI INT A disabled

and went nappies here.. finally I did a alt-sysrq-t, and we're here, with
several modprobes chugging along very slowly...

[  127.995256] modprobe      D ffff88007edcb800  5176   862    861
[  127.995256]  ffff88007ec639a8 0000000000000046 000000017e42f250 ffffffff8079d7c0
[  127.995256]  ffffffff8079d750 ffffffff8081e7c0 ffffffff8081e7c0 ffff88007eddd7f0
[  127.995256]  ffff88007f2677f0 ffff88007edddb48 000000008079ea80 ffff88007edddb48
[  127.995256] Call Trace:
[  127.995256]  [<ffffffff80283516>] ? __alloc_pages_internal+0x10d/0x493
[  127.995256]  [<ffffffff8022f214>] ? get_parent_ip+0x11/0x41
[  127.995256]  [<ffffffff80568bc6>] schedule_timeout+0x22/0xb4
[  127.995256]  [<ffffffff8022f214>] ? get_parent_ip+0x11/0x41
[  127.995256]  [<ffffffff8056d949>] ? sub_preempt_count+0x35/0x49
[  127.995256]  [<ffffffff805699de>] __down_common+0x9d/0xdf
[  127.995256]  [<ffffffff80569a31>] __down_timeout+0x11/0x13
[  127.995256]  [<ffffffff8024f639>] down_timeout+0x48/0x61
[  127.995256]  [<ffffffff803a5b1d>] acpi_os_wait_semaphore+0x49/0x58
[  127.995256]  [<ffffffff803be893>] acpi_ut_acquire_mutex+0x3e/0x82
[  127.995256]  [<ffffffff803b29ce>] acpi_ex_enter_interpreter+0xb/0x2b
[  127.995256]  [<ffffffff803b5840>] acpi_ns_evaluate+0x1ac/0x230
[  127.995256]  [<ffffffff803b52b4>] acpi_evaluate_object+0xfc/0x204
[  127.995256]  [<ffffffff8038ebd3>] ? pci_get_subsys+0x7b/0x8f
[  127.995256]  [<ffffffffa005fe16>] acpi_processor_start+0x1ba/0x78a [processor]
[  127.995256]  [<ffffffff803c09b3>] acpi_start_single_object+0x2a/0x54
[  127.995256]  [<ffffffff803c1fc7>] acpi_device_probe+0x78/0x8c
[  127.995256]  [<ffffffff803f349f>] driver_probe_device+0xe7/0x195
[  127.995256]  [<ffffffff803f35af>] __driver_attach+0x62/0x8c
[  127.995256]  [<ffffffff803f354d>] ? __driver_attach+0x0/0x8c
[  127.995256]  [<ffffffff803f2d10>] bus_for_each_dev+0x4c/0x83
[  127.995256]  [<ffffffff803f32c3>] driver_attach+0x1c/0x1e
[  127.995256]  [<ffffffff803f260d>] bus_add_driver+0xb5/0x1ff
[  127.995256]  [<ffffffff803f37a0>] driver_register+0xa8/0x128
[  127.995256]  [<ffffffffa006a000>] ? acpi_processor_init+0x0/0x10a [processor]
[  127.995256]  [<ffffffff803c22f6>] acpi_bus_register_driver+0x3e/0x40
[  127.995256]  [<ffffffffa006a097>] acpi_processor_init+0x97/0x10a [processor]
[  127.995256]  [<ffffffff80209058>] _stext+0x58/0x138
[  127.995256]  [<ffffffff8022f214>] ? get_parent_ip+0x11/0x41
[  127.995256]  [<ffffffff8056d949>] ? sub_preempt_count+0x35/0x49
[  127.995256]  [<ffffffff8056aa0d>] ? _spin_unlock_irqrestore+0x5e/0x6c
[  127.995256]  [<ffffffff8037b6e6>] ? __up_read+0x7c/0x85
[  127.995256]  [<ffffffff8024ef3b>] ? up_read+0x9/0xb
[  127.995256]  [<ffffffff8024fa3e>] ? __blocking_notifier_call_chain+0x58/0x6a
[  127.995256]  [<ffffffff8025f536>] sys_init_module+0xbd/0x1db
[  127.995256]  [<ffffffff8020bb3b>] system_call_fastpath+0x16/0x1b

[  127.995256] modprobe      R  running task     5240   878    875
[  127.995256]  ffff88007e4838a8 0000000000000046 0000007b8081bba8 ffffffff803b21c5
[  127.995256]  ffff88007e483858 ffffffff8081e7c0 ffffffff8081e7c0 ffff88007e76d040
[  127.995256]  ffff88007f2347f0 ffff88007e76d3a0 0000000100000000 ffff88007e76d398
[  127.995256] Call Trace:
[  127.995256]  [<ffffffff803b21c5>] ? acpi_ex_system_io_space_handler+0x0/0x44
[  127.995256]  [<ffffffff802a2343>] ? __cache_free+0x41/0xf4
[  127.995256]  [<ffffffff80568acb>] preempt_schedule_irq+0x4d/0x91
[  127.995256]  [<ffffffff8020c676>] retint_kernel+0x26/0x30
[  127.995256]  [<ffffffff803ae5ae>] ? acpi_ex_name_segment+0x5a/0xed
[  127.995256]  [<ffffffff803ae5d3>] ? acpi_ex_name_segment+0x7f/0xed
[  127.995256]  [<ffffffff803ae730>] acpi_ex_get_name_string+0xef/0x1ef
[  127.995256]  [<ffffffff803a9463>] acpi_ds_create_operand+0x4e/0x209
[  127.995256]  [<ffffffff803a9667>] acpi_ds_evaluate_name_path+0x49/0xff
[  127.995256]  [<ffffffff803a832f>] acpi_ds_exec_end_op+0x94/0x3d9
[  127.995256]  [<ffffffff803b8c1f>] acpi_ps_parse_loop+0x6d4/0x859
[  127.995256]  [<ffffffff803b7e45>] acpi_ps_parse_aml+0x9a/0x2d9
[  127.995256]  [<ffffffff803b93f2>] acpi_ps_execute_method+0x195/0x267
[  127.995256]  [<ffffffff803b57e6>] acpi_ns_evaluate+0x152/0x230
[  127.995256]  [<ffffffff803b52b4>] acpi_evaluate_object+0xfc/0x204
[  127.995256]  [<ffffffffa0033403>] acpi_battery_update+0x9e/0x1df [battery]
[  127.995256]  [<ffffffffa0033f25>] acpi_battery_add+0x8d/0x1d4 [battery]
[  127.995256]  [<ffffffff803c1f98>] acpi_device_probe+0x49/0x8c
[  127.995256]  [<ffffffff803f349f>] driver_probe_device+0xe7/0x195
[  127.995256]  [<ffffffff803f35af>] __driver_attach+0x62/0x8c
[  127.995256]  [<ffffffff803f354d>] ? __driver_attach+0x0/0x8c
[  127.995256]  [<ffffffff803f2d10>] bus_for_each_dev+0x4c/0x83
[  127.995256]  [<ffffffff803f32c3>] driver_attach+0x1c/0x1e
[  127.995256]  [<ffffffff803f260d>] bus_add_driver+0xb5/0x1ff
[  127.995256]  [<ffffffff803f37a0>] driver_register+0xa8/0x128
[  127.995256]  [<ffffffffa0039000>] ? acpi_battery_init+0x0/0x45 [battery]
[  127.995256]  [<ffffffff803c22f6>] acpi_bus_register_driver+0x3e/0x40
[  127.995256]  [<ffffffffa003902a>] acpi_battery_init+0x2a/0x45 [battery]
[  127.995256]  [<ffffffff80209058>] _stext+0x58/0x138
[  127.995256]  [<ffffffff8022f214>] ? get_parent_ip+0x11/0x41
[  127.995256]  [<ffffffff8056d949>] ? sub_preempt_count+0x35/0x49
[  127.995256]  [<ffffffff8056aa0d>] ? _spin_unlock_irqrestore+0x5e/0x6c
[  127.995256]  [<ffffffff8037b6e6>] ? __up_read+0x7c/0x85
[  127.995256]  [<ffffffff8024ef3b>] ? up_read+0x9/0xb
[  127.995256]  [<ffffffff8024fa3e>] ? __blocking_notifier_call_chain+0x58/0x6a
[  127.995256]  [<ffffffff8025f536>] sys_init_module+0xbd/0x1db
[  127.995256]  [<ffffffff8020bb3b>] system_call_fastpath+0x16/0x1b

[  127.995256] modprobe      D ffff88007edcb440  5816   882    879
[  127.995256]  ffff88007e433c08 0000000000000046 ffff88007e433b78 ffffffff80376e5e
[  127.995256]  ffff88007f411090 ffffffff8081e7c0 ffffffff8081e7c0 ffff88007e4a57f0
[  127.995256]  ffff88007e7627f0 ffff88007e4a5b48 000000007e433b98 ffff88007e4a5b48
[  127.995256] Call Trace:
[  127.995256]  [<ffffffff80376e5e>] ? _atomic_dec_and_lock+0x5a/0x98
[  127.995256]  [<ffffffff802f9623>] ? sysfs_addrm_finish+0x69/0x255
[  127.995256]  [<ffffffff802f90e6>] ? __sysfs_get+0x4d/0x58
[  127.995256]  [<ffffffff802f9266>] ? __sysfs_add_one+0x63/0x9e
[  127.995256]  [<ffffffff80568bc6>] schedule_timeout+0x22/0xb4
[  127.995256]  [<ffffffff802f993f>] ? create_dir+0x63/0x87
[  127.995256]  [<ffffffff8022f214>] ? get_parent_ip+0x11/0x41
[  127.995256]  [<ffffffff8056d949>] ? sub_preempt_count+0x35/0x49
[  127.995256]  [<ffffffff805699de>] __down_common+0x9d/0xdf
[  127.995256]  [<ffffffff803f354d>] ? __driver_attach+0x0/0x8c
[  127.995256]  [<ffffffff80569a7f>] __down+0x18/0x1a
[  127.995256]  [<ffffffff8024f741>] down+0x39/0x4c
[  127.995256]  [<ffffffff803f358b>] __driver_attach+0x3e/0x8c
[  127.995256]  [<ffffffff803f354d>] ? __driver_attach+0x0/0x8c
[  127.995256]  [<ffffffff803f2d10>] bus_for_each_dev+0x4c/0x83
[  127.995256]  [<ffffffff803f32c3>] driver_attach+0x1c/0x1e
[  127.995256]  [<ffffffff803f260d>] bus_add_driver+0xb5/0x1ff
[  127.995256]  [<ffffffff803f37a0>] driver_register+0xa8/0x128
[  127.995256]  [<ffffffffa0059000>] ? acpi_button_init+0x0/0x5e [button]
[  127.995256]  [<ffffffff803c22f6>] acpi_bus_register_driver+0x3e/0x40
[  127.995256]  [<ffffffffa005903c>] acpi_button_init+0x3c/0x5e [button]
[  127.995256]  [<ffffffff80209058>] _stext+0x58/0x138
[  127.995256]  [<ffffffff8022f214>] ? get_parent_ip+0x11/0x41
[  127.995256]  [<ffffffff8056d949>] ? sub_preempt_count+0x35/0x49
[  127.995256]  [<ffffffff8056aa0d>] ? _spin_unlock_irqrestore+0x5e/0x6c
[  127.995256]  [<ffffffff8037b6e6>] ? __up_read+0x7c/0x85
[  127.995256]  [<ffffffff8024ef3b>] ? up_read+0x9/0xb
[  127.995256]  [<ffffffff8024fa3e>] ? __blocking_notifier_call_chain+0x58/0x6a
[  127.995256]  [<ffffffff8025f536>] sys_init_module+0xbd/0x1db
[  127.995256]  [<ffffffff8020bb3b>] system_call_fastpath+0x16/0x1b

[  127.995256] modprobe      D ffff88007e736440  5816   953    952
[  127.995256]  ffff88007e751958 0000000000000046 0000000000000040 000000447e7cd440
[  127.995256]  0000000000000003 ffffffff8081e7c0 ffffffff8081e7c0 ffff88007e1e17f0
[  127.995256]  ffff88007e64d7f0 ffff88007e1e1b48 000000018037b061 ffff88007e1e1b48
[  127.995256] Call Trace:
[  127.995256]  [<ffffffff80568bc6>] schedule_timeout+0x22/0xb4
[  127.995256]  [<ffffffff803b4d36>] ? acpi_ns_search_and_enter+0xbc/0x18a
[  127.995256]  [<ffffffff8022f214>] ? get_parent_ip+0x11/0x41
[  127.995256]  [<ffffffff8056d949>] ? sub_preempt_count+0x35/0x49
[  127.995256]  [<ffffffff805699de>] __down_common+0x9d/0xdf
[  127.995256]  [<ffffffff80569a31>] __down_timeout+0x11/0x13
[  127.995256]  [<ffffffff8024f639>] down_timeout+0x48/0x61
[  127.995256]  [<ffffffff803a5b1d>] acpi_os_wait_semaphore+0x49/0x58
[  127.995256]  [<ffffffff803be893>] acpi_ut_acquire_mutex+0x3e/0x82
[  127.995256]  [<ffffffff803b29ce>] acpi_ex_enter_interpreter+0xb/0x2b
[  127.995256]  [<ffffffff803b5840>] acpi_ns_evaluate+0x1ac/0x230
[  127.995256]  [<ffffffff803b52b4>] acpi_evaluate_object+0xfc/0x204
[  127.995256]  [<ffffffff802a3146>] ? kmem_cache_alloc+0xcd/0xec
[  127.995256]  [<ffffffff803a652e>] acpi_evaluate_integer+0x93/0xd1
[  127.995256]  [<ffffffff803c0762>] acpi_get_physical_pci_device+0x1e/0x53
[  127.995256]  [<ffffffffa00cd7ce>] acpi_video_bus_add+0x1bc/0xe0a [video]
[  127.995256]  [<ffffffff803c1f98>] acpi_device_probe+0x49/0x8c
[  127.995256]  [<ffffffff803f349f>] driver_probe_device+0xe7/0x195
[  127.995256]  [<ffffffff803f35af>] __driver_attach+0x62/0x8c
[  127.995256]  [<ffffffff803f354d>] ? __driver_attach+0x0/0x8c
[  127.995256]  [<ffffffff803f2d10>] bus_for_each_dev+0x4c/0x83
[  127.995256]  [<ffffffff803f32c3>] driver_attach+0x1c/0x1e
[  127.995256]  [<ffffffff803f260d>] bus_add_driver+0xb5/0x1ff
[  127.995256]  [<ffffffff803f37a0>] driver_register+0xa8/0x128
[  127.995256]  [<ffffffffa000c000>] ? acpi_video_init+0x0/0x5e [video]
[  127.995256]  [<ffffffff803c22f6>] acpi_bus_register_driver+0x3e/0x40
[  127.995256]  [<ffffffffa000c03c>] acpi_video_init+0x3c/0x5e [video]
[  127.995256]  [<ffffffff80209058>] _stext+0x58/0x138
[  127.995256]  [<ffffffff8022f214>] ? get_parent_ip+0x11/0x41
[  127.995256]  [<ffffffff8056d949>] ? sub_preempt_count+0x35/0x49
[  127.995256]  [<ffffffff8056aa0d>] ? _spin_unlock_irqrestore+0x5e/0x6c
[  127.995256]  [<ffffffff8037b6e6>] ? __up_read+0x7c/0x85
[  127.995256]  [<ffffffff8024ef3b>] ? up_read+0x9/0xb
[  127.995256]  [<ffffffff8024fa3e>] ? __blocking_notifier_call_chain+0x58/0x6a
[  127.995256]  [<ffffffff8025f536>] sys_init_module+0xbd/0x1db
[  127.995256]  [<ffffffff8020bb3b>] system_call_fastpath+0x16/0x1b

Eventually:

[  204.927554] tpm_tis 00:0f: 1.2 TPM (device-id 0x1001, rev-id 2)
[  266.745556] ACPI Error (psparse-0536): Method parse/execution failed [\SXX6] (Node ffff88007f851a98), AE_AML_INFINITE_LOOP
[  266.756705] ACPI Error (psparse-0536): Method parse/execution failed [\SXX4] (Node ffff88007f851a58), AE_AML_INFINITE_LOOP
[  266.768276] ACPI Error (psparse-0536): Method parse/execution failed [\SX11] (Node ffff88007f8519f8), AE_AML_INFINITE_LOOP
[  266.779900] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.BIF_] (Node ffff88007f858458), AE_AML_INFINITE_LOOP
[  266.791807] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.BAT0._BIF] (Node ffff88007f858398), AE_AML_INFINITE_LOOP
[  266.803600] ACPI Exception (battery-0329): AE_AML_INFINITE_LOOP, ACPI: SSDT 7FE82138, 0244 (r1  PmRef  Cpu0Ist     3000 INTL 20050624)
[  266.810266] Evaluating _BIF [20080926]
[  266.810279] ACPI: Battery Slot [BAT0] (battery present)
[  266.810394] input: Lid Switch as /devices/LNXSYSTM:00/device:00/PNP0C0D:00/input/input5
[  266.853545] ACPI: SSDT 7FE81EED, 01C6 (r1  PmRef  Cpu0Cst     3001 INTL 20050624)
[  415.384183] SysRq : Resetting

Enough was enough.

--==_Exmh_1227720950_3623P
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--==_Exmh_1227720950_3623P--
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