kmemleaks related to ACPI psparse

From: Sitsofe Wheeler
Date: Fri Sep 16 2011 - 03:22:16 EST

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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