linux-kernel - Re: [PATCH] net: ethernet: ixp4xx: Add error handling inixp4xx_eth

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Message-ID: <71697844-cc03-9206-1594-b8af02f38018@cmss.chinamobile.com>
Date:   Tue, 21 Apr 2020 12:46:37 +0800
From:   Tang Bin <tangbin@...s.chinamobile.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     khalasa@...p.pl, davem@...emloft.net, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Shengju Zhang <zhangshengju@...s.chinamobile.com>
Subject: Re: [PATCH] net: ethernet: ixp4xx: Add error handling
 inixp4xx_eth_probe()

Hi Jakub:

On 2020/4/13 2:35, Jakub Kicinski wrote:
> On Sun, 12 Apr 2020 17:27:28 +0800 Tang Bin wrote:
>> The function ixp4xx_eth_probe() does not perform sufficient error
>> checking after executing devm_ioremap_resource(),which can result
>> in crashes if a critical error path is encountered.
>>
> Please provide an appropriate Fixes: tag.

Thanks for your reply.

I don't know whether the commit message affect this patch's result. If so,

I think the commit message in v2 needs more clarification. As follows:

     The function ixp4xx_eth_probe() does not perform sufficient error 
checking

after executing devm_ioremap_resource(), which can result in crashes if 
a critical

error path is encountered.

     Fixes: f458ac479777 ("ARM/net: ixp4xx: Pass ethernet physical base 
as resource").


I'm waiting for you reply actively.

Thanks,

Tang Bin