netdev - Re: [PATCH net] Fixing a bug in team driver due to incorrect 'unsigned int' to 'int' conversion

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Message-Id: <20161006.011950.406052415167344815.davem@davemloft.net>
Date:   Thu, 06 Oct 2016 01:19:50 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     alexandre.sidorenko@....com
Cc:     eric.dumazet@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH net] Fixing a bug in team driver due to incorrect
 'unsigned int' to 'int' conversion

From: Alex Sidorenko <alexandre.sidorenko@....com>
Date: Wed, 05 Oct 2016 09:06:04 -0400

> Roundrobin runner of team driver uses 'unsigned int' variable to count the number of sent_packets.
> Later it is passed to a subroutine team_num_to_port_index(struct team *team, int num) as
> 'num' and when we reach MAXINT (2**31-1), 'num' becomes negative.
> 
> This leads to using incorrect hash-bucket for port lookup and as a result, packets are dropped. The fix
> consists of changing 'int num' to 'unsigned int num'. Testing of a fixed kernel shows that there
> is no packet drop anymore.
> 
> 
> Signed-off-by: Alex Sidorenko <alexandre.sidorenko@....com>

This patch has been corrupted by your email client, for example it
has transformed TAB charactes into spaces.

Please fix this up, email a test patch to yourself, and only resubmit
this patch to the mailing list when you are able to successfully apply
the test patch you send to yourself.

Thanks.