netdev - Re: [PATCH] ethernet: tg3: remove unreachable code

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: <20230827164713.GU3523530@kernel.org>
Date: Sun, 27 Aug 2023 18:47:13 +0200
From: Simon Horman <horms@...nel.org>
To: Mikhail Kobuk <m.kobuk@...ras.ru>
Cc: Siva Reddy Kallam <siva.kallam@...adcom.com>,
	Prashant Sreedharan <prashant@...adcom.com>,
	Michael Chan <mchan@...adcom.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Richard Cochran <richardcochran@...il.com>,
	Jean Delvare <jdelvare@...e.com>,
	Guenter Roeck <linux@...ck-us.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-hwmon@...r.kernel.org,
	lvc-project@...uxtesting.org,
	Alexey Khoroshilov <khoroshilov@...ras.ru>
Subject: Re: [PATCH] ethernet: tg3: remove unreachable code

On Fri, Aug 25, 2023 at 10:04:41PM +0300, Mikhail Kobuk wrote:
> 'tp->irq_max' value is either 1 [L16336] or 5 [L16354], as indicated in
> tg3_get_invariants(). Therefore, 'i' can't exceed 4 in tg3_init_one()
> that makes (i <= 4) always true. Moreover, 'intmbx' value set at the
> last iteration is not used later in it's scope.
> 
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
> 
> Fixes: 78f90dcf184b ("tg3: Move napi_add calls below tg3_get_invariants")
> Signed-off-by: Mikhail Kobuk <m.kobuk@...ras.ru>
> Reviewed-by: Alexey Khoroshilov <khoroshilov@...ras.ru>

Reviewed-by: Simon Horman <horms@...nel.org>