netdev - Re: [PATCH v1 net] lan743x: fix return value for lan743x_tx_napi

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Message-ID: <20181120193054.GE2649@lunn.ch>
Date:   Tue, 20 Nov 2018 20:30:54 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Bryan Whitehead <Bryan.Whitehead@...rochip.com>
Cc:     davem@...emloft.net, netdev@...r.kernel.org,
        UNGLinuxDriver@...rochip.com
Subject: Re: [PATCH v1 net] lan743x: fix return value for lan743x_tx_napi_poll

On Tue, Nov 20, 2018 at 01:26:43PM -0500, Bryan Whitehead wrote:
> It has been noticed that under stress the lan743x driver will
> sometimes hang or cause a kernel panic. It has been noticed
> that returning '0' instead of 'weight' fixes this issue.
> 
> fixes: rare kernel panic under heavy traffic load.
> Signed-off-by: Bryan Whitehead <Bryan.Whitehead@...rochip.com>

Hi Bryan

This sounds like a band aid over something which is broken, not a real
fix.

Can you show us the stack trace from the panic?

    Andrew