Re: [3.1] Divide by zero in __tcp_select_window()

From: David Miller
Date: Mon Nov 14 2011 - 15:39:57 EST


From: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Date: Tue, 08 Nov 2011 22:23:25 +0100

> OK, it seems we let a timer running while we free the socket (same error
> path than your previous bug report, because of the NULL route)
>
> We arm this keepalive timer in tcp_create_openreq_child()
>
> net/ipv4/tcp_minisocks.c:513
> if (sock_flag(newsk, SOCK_KEEPOPEN))
> inet_csk_reset_keepalive_timer(newsk,
> keepalive_time_when(newtp));
>
> I would try to add a call to tcp_clear_xmit_timers() as well
>
> Please try following patch :

We've been waiting quite some time to get some testing validation on
this patch, but I think it's correct.

Eric can you formally submit this? Thanks!
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