Re: [RFC/PATCH] Bluetooth: prevent double l2cap_chan_destroy

[Gustavo Padovan <gustavo@xxxxxxxxxxx>]

Hi Minho,

* Minho Ban <mhban@xxxxxxxxxxx> [2012-05-21 09:56:40 +0900]:

> l2cap_sock_kill can be called in l2cap_sock_release and l2cap_sock_close_cb
> either. This lead l2cap_chan_destroy to be called twice for same channel.
> To prevent double list_del and double chan_put, chan_destroy should be protected
> with chan->refcnt and chan_list_lock so that reentrance could be forbidden.

Even if l2cap_sock_kill() is called twice it will call l2cap_chan_destroy()
only once. If this is not happening we just have a broken piece of code
somewhere else and not here.

	Gustavo
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html