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Re: gigaset: freeing an active object

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Am 29.11.2015 um 19:22 schrieb Peter Hurley:
> On 11/29/2015 10:30 AM, Tilman Schmidt wrote:
>>
>> Judging from the backtrace below this must be the call
>>
>>         kfree(cs->hw.ser);
>>
>> in drivers/isdn/gigaset/ser-gigaset.c line 375.
>> cs->hw.ser is of type struct ser_cardstate *.
>> struct ser_cardstate consists of a struct platform_device, a struct
>> completion, an atomic_t and a pointer. No timer_list.
[...]
> 
> The platform_device embedded in struct ser_cardstate hasn't been released when
> you kfree() the memory it's in.

How so? The kfree() call quoted above is immediately preceded by:

        platform_device_unregister(&cs->hw.ser->dev);

Thanks,
Tilman

-- 
Tilman Schmidt                              E-Mail: tilman@imap.cc
Bonn, Germany
Nous, on a des fleurs et des bougies pour nous protéger.

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gigaset: freeing an active object Sasha Levin <sasha.levin@oracle.com> - 2015-11-27 16:20 +0100
  Re: gigaset: freeing an active object Paul Bolle <pebolle@tiscali.nl> - 2015-11-27 19:00 +0100
    Re: gigaset: freeing an active object Sasha Levin <sasha.levin@oracle.com> - 2015-11-27 19:20 +0100
      Re: gigaset: freeing an active object Paul Bolle <pebolle@tiscali.nl> - 2015-11-28 01:30 +0100
        Re: gigaset: freeing an active object Sasha Levin <sasha.levin@oracle.com> - 2015-11-28 02:30 +0100
          Re: gigaset: freeing an active object Dmitry Vyukov <dvyukov@google.com> - 2015-11-29 15:40 +0100
        Re: gigaset: freeing an active object Peter Hurley <peter@hurleysoftware.com> - 2015-11-28 02:30 +0100
  Re: gigaset: freeing an active object Tilman Schmidt <tilman@imap.cc> - 2015-11-29 16:40 +0100
    Re: gigaset: freeing an active object Peter Hurley <peter@hurleysoftware.com> - 2015-11-29 19:30 +0100
      Re: gigaset: freeing an active object Tilman Schmidt <tilman@imap.cc> - 2015-11-29 19:40 +0100
      Re: gigaset: freeing an active object Tilman Schmidt <tilman@imap.cc> - 2015-11-29 19:50 +0100
        Re: gigaset: freeing an active object Paul Bolle <pebolle@tiscali.nl> - 2015-11-29 21:30 +0100
          Re: gigaset: freeing an active object Paul Bolle <pebolle@tiscali.nl> - 2015-11-30 00:30 +0100

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