Re: gigaset: freeing an active object

[Tilman Schmidt <tilman@imap.cc>]

[-- Attachment #1: Type: text/plain, Size: 853 bytes --]

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.


[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 473 bytes --]