D25454: Prevent a crash when deleting a device Interface

[Méven Car]

meven created this revision.
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REVISION SUMMARY
  Double free of DeviceInterfacePrivate::m_backendObject
  
  BUG: 414200
  FIXED-IN: 5.65
  
  #7  QPointer<QObject>::data (this=0x28) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qpointer.h:85
  #8  Solid::DeviceInterfacePrivate::backendObject (this=0x20) at /home/meven/kde/src/solid/src/solid/devices/frontend/deviceinterface.cpp:110
  #9  0x00007efd423e4cbd in Solid::DevicePrivate::~DevicePrivate (this=0x55b4921e4820, __in_chrg=<optimized out>) at /home/meven/kde/src/solid/src/solid/devices/frontend/device.cpp:222
  #10 0x00007efd423e4e2d in Solid::DevicePrivate::~DevicePrivate (this=0x55b4921e4820, __in_chrg=<optimized out>) at /home/meven/kde/src/solid/src/solid/devices/frontend/device.cpp:219
  #11 0x00007efd423e6437 in Solid::DeviceManagerPrivate::~DeviceManagerPrivate (this=0x55b4921c93e0, __in_chrg=<optimized out>) at /usr/include/c++/9/bits/atomic_base.h:413
  #12 0x00007efd423e80ad in Solid::DeviceManagerPrivate::~DeviceManagerPrivate (this=0x55b4921c93e0, __in_chrg=<optimized out>) at /home/meven/kde/src/solid/src/solid/devices/frontend/devicemanager.cpp:49

REPOSITORY
  R245 Solid

BRANCH
  prevent-crash

REVISION DETAIL
  https://phabricator.kde.org/D25454

AFFECTED FILES
  src/solid/devices/frontend/device.cpp

To: meven, #frameworks
Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns
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