Re: [tipc-discussion] [net-next 1/1] tipc: fix race between poll() and setsockopt()

[David M. <da...@da...>]

From: Jon Maloy <jon...@er...>
Date: Wed, 17 Jan 2018 16:42:46 +0100

> Letting tipc_poll() dereference a socket's pointer to struct tipc_group
> entails a race risk, as the group item may be deleted in a concurrent
> tipc_sk_join() or tipc_sk_leave() thread.
> 
> We now move the 'open' flag in struct tipc_group to struct tipc_sock,
> and let the former retain only a pointer to the moved field. This will
> eliminate the race risk.
> 
> Reported-by: syz...@sy...
> Signed-off-by: Jon Maloy <jon...@er...>

Applied, thanks Jon.