[Bug 16489] New: kmemleak after suspend2ram in cpufreq driver

[Bug 16489] New: kmemleak after suspend2ram in cpufreq driver

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16489

           Summary: kmemleak after suspend2ram in cpufreq driver
           Product: Power Management
           Version: 2.5
    Kernel Version: 2.6.35-rc6+
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: cpufreq
        AssignedTo: cpufreq@vger.kernel.org
        ReportedBy: toralf.foerster@gmx.de
        Regression: No


If I suspend2ram my ThinkPad T400 and wake it up, then
/sys/kernel/debug/kmemleak contains an entry like this:

unreferenced object 0xf6788640 (size 64):
  comm "modprobe", pid 1038, jiffies 4294676277 (age 7682.155s)
  hex dump (first 32 bytes):
    00 00 00 00 e8 a2 24 00 01 00 00 00 00 9f 24 00  ......$.......$.
    02 00 00 00 00 6a 18 00 03 00 00 00 00 35 0c 00  .....j.......5..
  backtrace:
    [<c122f8f7>] kmemleak_alloc+0x27/0x50
    [<c109cb6f>] __kmalloc+0xcf/0x110
    [<f94f87de>] acpi_cpufreq_cpu_init+0x1ee/0x4e4 [acpi_cpufreq]
    [<c11c3a72>] cpufreq_add_dev+0x142/0x3a0
    [<c1187e27>] sysdev_driver_register+0x97/0x110
    [<c11c2a06>] cpufreq_register_driver+0x86/0x140
    [<f94fc080>] 0xf94fc080
    [<c100112d>] do_one_initcall+0x2d/0x180
    [<c105ef29>] sys_init_module+0x99/0x1e0
    [<c1002d97>] sysenter_do_call+0x12/0x26
    [<ffffffff>] 0xffffffff


What's interesting is that this entry only appears after the wakeup (and an
additional wait time of usually 20 minutes) however the "age" is from the boot
time of that system.

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[Bug 16489] kmemleak after suspend2ram in cpufreq driver

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16489


Toralf Förster <toralf.foerster@gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|2.6.35-rc6+                 |2.6.35.3




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[Bug 16489] kmemleak after suspend2ram in cpufreq driver

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16489





--- Comment #1 from Toralf Förster <toralf.foerster@gmx.de>  2010-09-23 21:30:25 ---
After s2ram and wakeup I got this BTW :


unreferenced object 0xe29f9d40 (size 64):
  comm "default.sh", pid 15954, jiffies 1585745 (age 12642.714s)
  hex dump (first 32 bytes):
    00 00 00 00 e8 a2 24 00 01 00 00 00 00 9f 24 00  ......$.......$.
    02 00 00 00 00 6a 18 00 03 00 00 00 00 35 0c 00  .....j.......5..
  backtrace:
    [<c122fb97>] kmemleak_alloc+0x27/0x50
    [<c109caff>] __kmalloc+0xcf/0x110
    [<f95a87de>] acpi_cpufreq_cpu_init+0x1ee/0x4e4 [acpi_cpufreq]
    [<c11c3cb2>] cpufreq_add_dev+0x142/0x3a0
    [<c123ba46>] cpufreq_cpu_callback+0x5b/0x65
    [<c104c895>] notifier_call_chain+0x35/0x60
    [<c104c9a9>] __raw_notifier_call_chain+0x19/0x20
    [<c103459f>] __cpu_notify+0x1f/0x40
    [<c123a7bd>] _cpu_up+0xc1/0xfe
    [<c122eff7>] enable_nonboot_cpus+0x77/0xb0
    [<c105ffec>] suspend_devices_and_enter+0xec/0x190
    [<c106015a>] enter_state+0xca/0xe0
    [<c105f97b>] state_store+0x6b/0xb0
    [<c1124560>] kobj_attr_store+0x20/0x30
    [<c10e79c4>] sysfs_write_file+0x94/0xf0
    [<c10a28ea>] vfs_write+0x9a/0x190

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[Bug 16489] kmemleak after suspend2ram in cpufreq driver

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16489


Toralf Förster <toralf.foerster@gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|2.6.35.3                    |2.6.35.5




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[Bug 16489] kmemleak after suspend2ram in cpufreq driver

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16489


Toralf Förster <toralf.foerster@gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|2.6.35.5                    |2.6.35.6




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[Bug 16489] kmemleak after suspend2ram in cpufreq driver

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16489


Toralf Förster <toralf.foerster@gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE




--- Comment #2 from Toralf Förster <toralf.foerster@gmx.de>  2010-10-03 20:21:54 ---


*** This bug has been marked as a duplicate of bug 15807 ***

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[Bug 16489] kmemleak after suspend2ram in cpufreq driver

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https://bugzilla.kernel.org/show_bug.cgi?id=16489


Len Brown <lenb@kernel.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED
                 CC|                            |lenb@kernel.org




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