On Mon, Apr 12, 2021 at 3:21 PM Sean Christopherson <[email protected]> wrote:
>
> If allocating a new instance of an I/O bus fails when unregistering a
> device, wait to destroy the device until after all readers are guaranteed
> to see the new null bus.  Destroying devices before the bus is nullified
> could lead to use-after-free since readers expect the devices on their
> reference of the bus to remain valid.
>
> Fixes: f65886606c2d ("KVM: fix memory leak in kvm_io_bus_unregister_dev()")
> Cc: [email protected]
> Signed-off-by: Sean Christopherson <[email protected]>
Reviewed-by: Jim Mattson <[email protected]>

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