linux-kernel - Re: [PATCH] farsync: fix invalid memory accesses in fst_add_one() and fst_init

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: <20140708.162027.1804045121900039101.davem@davemloft.net>
Date:	Tue, 08 Jul 2014 16:20:27 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	khoroshilov@...ras.ru
Cc:	kevin.curtis@...site.co.uk, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, ldv-project@...uxtesting.org
Subject: Re: [PATCH] farsync: fix invalid memory accesses in fst_add_one()
 and fst_init_card()

From: Alexey Khoroshilov <khoroshilov@...ras.ru>
Date: Tue, 08 Jul 2014 18:40:32 -0400

> On 08.07.2014 18:20, David Miller wrote:
>> From: Alexey Khoroshilov <khoroshilov@...ras.ru>
>> Date: Sat,  5 Jul 2014 03:35:50 +0400
>>
>>> -                }
>>> +			card->nports = i;
>>> +			return (card->nports == 0) ? err : 0;
>>> +		}
>> I don't think this is the right thing to do.
>>
>> This will cause the caller to not free the IRQ or any of the
>> other resources.
> My understanding of the existing code is to proceed if at least one port
> is available.
> So I return error code if no ports available at all, otherwise
> initialization continues and can succeed.
> If something else goes wrong, all resources are deallocated.
> 
> Do you suggest to return error code unconditionally?

Yes, that is my suggestion.

I'm also weary of so many changes to a driver that gets so little
usage and probably next to no testing at all.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/