linux-kernel - kmemleaks related to ACPI psparse

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Message-ID: <20110916072210.GA25500@sucs.org>
Date:	Fri, 16 Sep 2011 08:22:10 +0100
From:	Sitsofe Wheeler <sitsofe@...oo.com>
To:	Lin Ming <ming.m.lin@...el.com>, Bob Moore <robert.moore@...el.com>
Cc:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: kmemleaks related to ACPI psparse

Hi,

In 3.1.0-rc5-dirty the following warning appeared in dmesg:

[  249.506212] ACPI Exception: AE_TIME, Returned by Handler for [EmbeddedControl] (20110623/evregion-478)
[  249.506387] ACPI Error: Method parse/execution failed [\_SB_.PCI0.SBRG.EC0_.RCTP] (Node ee96daf0), AE_TIME (20110623/psparse-536)
[  249.506636] ACPI Error: Method parse/execution failed [\_TZ_.RTMP] (Node eeb85000), AE_TIME (20110623/psparse-536)
[  249.506827] ACPI Error: Method parse/execution failed [\_TZ_.TZ00._TMP] (Node eeb85190), AE_TIME (20110623/psparse-536)
[  249.511953] Thermal: failed to read out thermal zone 0

Shortly followed by a bunch of kmemleak warnings (the initial trigger
has not been reproducible though):

unreferenced object 0xedcb81a0 (size 32):
  comm "kworker/0:2", pid 389, jiffies 4294915201 (age 649.854s)
  hex dump (first 32 bytes):
    00 00 00 00 0d 01 70 00 00 00 00 00 00 00 00 00  ......p.........
    00 00 00 00 d0 8d cb ed 00 00 00 00 01 00 00 00  ................
  backtrace:
    [<b0551807>] kmemleak_alloc+0x27/0x50
    [<b0196435>] kmem_cache_alloc+0xc5/0x180
    [<b02c5faf>] acpi_ps_alloc_op+0x82/0x84
    [<b02c55d5>] acpi_ps_parse_loop+0x1e9/0x830
    [<b02c4e1e>] acpi_ps_parse_aml+0x87/0x235
    [<b02c61b4>] acpi_ps_execute_method+0x190/0x248
    [<b02c1f8b>] acpi_ns_evaluate+0xc7/0x179
    [<b02c1abd>] acpi_evaluate_object+0xd1/0x1c0
    [<b02ad0aa>] acpi_evaluate_integer+0x2a/0x51
    [<b02cf9de>] thermal_get_temp+0x34/0x5a
    [<b03f6d49>] thermal_zone_device_update+0x29/0x2a0
    [<b03f6fcd>] thermal_zone_device_check+0xd/0x10
    [<b013bd2c>] process_one_work+0x18c/0x3c0
    [<b013e697>] worker_thread+0x107/0x310
    [<b0141cac>] kthread+0x7c/0x90
    [<b055e102>] kernel_thread_helper+0x6/0xd
unreferenced object 0xedcb8dd0 (size 32):
  comm "kworker/0:2", pid 389, jiffies 4294915201 (age 649.854s)
  hex dump (first 32 bytes):
    a0 81 cb ed 0d 01 36 00 00 00 00 00 00 00 00 00  ......6.........
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<b0551807>] kmemleak_alloc+0x27/0x50
    [<b0196435>] kmem_cache_alloc+0xc5/0x180
    [<b02c5faf>] acpi_ps_alloc_op+0x82/0x84
    [<b02c5159>] acpi_ps_complete_this_op+0xbb/0x146
    [<b02c5202>] acpi_ps_complete_op+0x1e/0x208
    [<b02c5afd>] acpi_ps_parse_loop+0x711/0x830
    [<b02c4e1e>] acpi_ps_parse_aml+0x87/0x235
    [<b02c61b4>] acpi_ps_execute_method+0x190/0x248
    [<b02c1f8b>] acpi_ns_evaluate+0xc7/0x179
    [<b02c1abd>] acpi_evaluate_object+0xd1/0x1c0
    [<b02ad0aa>] acpi_evaluate_integer+0x2a/0x51
    [<b02cf9de>] thermal_get_temp+0x34/0x5a
    [<b03f6d49>] thermal_zone_device_update+0x29/0x2a0
    [<b03f6fcd>] thermal_zone_device_check+0xd/0x10
    [<b013bd2c>] process_one_work+0x18c/0x3c0
    [<b013e697>] worker_thread+0x107/0x310
unreferenced object 0xedcb84e0 (size 32):
  comm "kworker/0:2", pid 389, jiffies 4294915202 (age 649.853s)
  hex dump (first 32 bytes):
    00 00 00 00 0d 01 a0 00 03 00 00 00 00 00 00 00  ................
    00 00 00 00 00 80 cb ed 00 00 00 00 02 00 00 00  ................
  backtrace:
    [<b0551807>] kmemleak_alloc+0x27/0x50
    [<b0196435>] kmem_cache_alloc+0xc5/0x180
    [<b02c5faf>] acpi_ps_alloc_op+0x82/0x84
    [<b02c55d5>] acpi_ps_parse_loop+0x1e9/0x830
    [<b02c4e1e>] acpi_ps_parse_aml+0x87/0x235
    [<b02c61b4>] acpi_ps_execute_method+0x190/0x248
    [<b02c1f8b>] acpi_ns_evaluate+0xc7/0x179
    [<b02c1abd>] acpi_evaluate_object+0xd1/0x1c0
    [<b02ad0aa>] acpi_evaluate_integer+0x2a/0x51
    [<b02cf9de>] thermal_get_temp+0x34/0x5a
    [<b03f6d49>] thermal_zone_device_update+0x29/0x2a0
    [<b03f6fcd>] thermal_zone_device_check+0xd/0x10
    [<b013bd2c>] process_one_work+0x18c/0x3c0
    [<b013e697>] worker_thread+0x107/0x310
    [<b0141cac>] kthread+0x7c/0x90
    [<b055e102>] kernel_thread_helper+0x6/0xd
unreferenced object 0xedcb8000 (size 32):
  comm "kworker/0:2", pid 389, jiffies 4294915209 (age 649.870s)
  hex dump (first 32 bytes):
    e0 84 cb ed 0d 01 a0 00 09 00 00 00 00 00 00 00  ................
    00 00 00 00 90 8a cb ed 00 00 00 00 02 00 00 00  ................
  backtrace:
    [<b0551807>] kmemleak_alloc+0x27/0x50
    [<b0196435>] kmem_cache_alloc+0xc5/0x180
    [<b02c5faf>] acpi_ps_alloc_op+0x82/0x84
    [<b02c55d5>] acpi_ps_parse_loop+0x1e9/0x830
    [<b02c4e1e>] acpi_ps_parse_aml+0x87/0x235
    [<b02c61b4>] acpi_ps_execute_method+0x190/0x248
    [<b02c1f8b>] acpi_ns_evaluate+0xc7/0x179
    [<b02c1abd>] acpi_evaluate_object+0xd1/0x1c0
    [<b02ad0aa>] acpi_evaluate_integer+0x2a/0x51
    [<b02cf9de>] thermal_get_temp+0x34/0x5a
    [<b03f6d49>] thermal_zone_device_update+0x29/0x2a0
    [<b03f6fcd>] thermal_zone_device_check+0xd/0x10
    [<b013bd2c>] process_one_work+0x18c/0x3c0
    [<b013e697>] worker_thread+0x107/0x310
    [<b0141cac>] kthread+0x7c/0x90
    [<b055e102>] kernel_thread_helper+0x6/0xd
unreferenced object 0xedcb8a90 (size 32):
  comm "kworker/0:2", pid 389, jiffies 4294915210 (age 649.869s)
  hex dump (first 32 bytes):
    00 80 cb ed 0d 01 70 00 14 00 00 00 00 00 00 00  ......p.........
    00 00 00 00 40 83 cb ed 00 00 00 00 01 00 00 00  ....@...........
  backtrace:
    [<b0551807>] kmemleak_alloc+0x27/0x50
    [<b0196435>] kmem_cache_alloc+0xc5/0x180
    [<b02c5faf>] acpi_ps_alloc_op+0x82/0x84
    [<b02c55d5>] acpi_ps_parse_loop+0x1e9/0x830
    [<b02c4e1e>] acpi_ps_parse_aml+0x87/0x235
    [<b02c61b4>] acpi_ps_execute_method+0x190/0x248
    [<b02c1f8b>] acpi_ns_evaluate+0xc7/0x179
    [<b02c1abd>] acpi_evaluate_object+0xd1/0x1c0
    [<b02ad0aa>] acpi_evaluate_integer+0x2a/0x51
    [<b02cf9de>] thermal_get_temp+0x34/0x5a
    [<b03f6d49>] thermal_zone_device_update+0x29/0x2a0
    [<b03f6fcd>] thermal_zone_device_check+0xd/0x10
    [<b013bd2c>] process_one_work+0x18c/0x3c0
    [<b013e697>] worker_thread+0x107/0x310
    [<b0141cac>] kthread+0x7c/0x90
    [<b055e102>] kernel_thread_helper+0x6/0xd
unreferenced object 0xedcb8340 (size 32):
  comm "kworker/0:2", pid 389, jiffies 4294915210 (age 649.869s)
  hex dump (first 32 bytes):
    90 8a cb ed 0d 01 2d 00 15 00 00 00 00 00 00 00  ......-.........
    00 00 00 00 85 17 f8 ef 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<b0551807>] kmemleak_alloc+0x27/0x50
    [<b0196435>] kmem_cache_alloc+0xc5/0x180
    [<b02c5faf>] acpi_ps_alloc_op+0x82/0x84
    [<b02c55d5>] acpi_ps_parse_loop+0x1e9/0x830
    [<b02c4e1e>] acpi_ps_parse_aml+0x87/0x235
    [<b02c61b4>] acpi_ps_execute_method+0x190/0x248
    [<b02c1f8b>] acpi_ns_evaluate+0xc7/0x179
    [<b02c1abd>] acpi_evaluate_object+0xd1/0x1c0
    [<b02ad0aa>] acpi_evaluate_integer+0x2a/0x51
    [<b02cf9de>] thermal_get_temp+0x34/0x5a
    [<b03f6d49>] thermal_zone_device_update+0x29/0x2a0
    [<b03f6fcd>] thermal_zone_device_check+0xd/0x10
    [<b013bd2c>] process_one_work+0x18c/0x3c0
    [<b013e697>] worker_thread+0x107/0x310
    [<b0141cac>] kthread+0x7c/0x90
    [<b055e102>] kernel_thread_helper+0x6/0xd

-- 
Sitsofe | http://sucs.org/~sits/
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