From: Soheil Hassas Yeganeh <soheil.k...@gmail.com>
Date: Sat, 14 Apr 2018 20:44:46 -0400

> From: Soheil Hassas Yeganeh <soh...@google.com>
> 
> Clear tp->packets_out when purging the write queue, otherwise
> tcp_rearm_rto() mistakenly assumes TCP write queue is not empty.
> This results in NULL pointer dereference.
> 
> Also, remove the redundant `tp->packets_out = 0` from
> tcp_disconnect(), since tcp_disconnect() calls
> tcp_write_queue_purge().
> 
> Fixes: a27fd7a8ed38 (tcp: purge write queue upon RST)
> Reported-by: Subash Abhinov Kasiviswanathan <subas...@codeaurora.org>
> Reported-by: Sami Farin <hvtaifwkbgefb...@gmail.com>
> Tested-by: Sami Farin <hvtaifwkbgefb...@gmail.com>
> Signed-off-by: Eric Dumazet <eduma...@google.com>
> Signed-off-by: Soheil Hassas Yeganeh <soh...@google.com>
> Acked-by: Yuchung Cheng <ych...@google.com>
> Acked-by: Neal Cardwell <ncardw...@google.com>

Applied and queued up for -stable, thanks.

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