linux-kernel - Re: [PATCH net v1 1/1] net: usb: asix: ax88772: Increase phy

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Z9mlWNdvWXohc6aM@smile.fi.intel.com>
Date: Tue, 18 Mar 2025 18:54:48 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andrew Lunn <andrew@...n.ch>
Cc: linux-usb@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Subject: Re: [PATCH net v1 1/1] net: usb: asix: ax88772: Increase phy_name
 size

On Tue, Mar 18, 2025 at 05:49:05PM +0100, Andrew Lunn wrote:

...

> > -	char phy_name[20];
> > +	char phy_name[MII_BUS_ID_SIZE + 5];
> 
> Could you explain the + 5?
> 
> https://elixir.bootlin.com/linux/v6.13.7/source/drivers/net/ethernet/davicom/dm9051.c#L1156
> https://elixir.bootlin.com/linux/v6.13.7/source/drivers/net/ethernet/freescale/fec_main.c#L2454
> https://elixir.bootlin.com/linux/v6.13.7/source/drivers/net/ethernet/xilinx/ll_temac.h#L348
> 
> The consensus seems to be + 3.

u16, gcc can't proove the range, it assumes 65536 is the maximum.

include/linux/phy.h:312:20: note: directive argument in the range [0, 65535]

-- 
With Best Regards,
Andy Shevchenko