netdev - Re: [PATCH net/stable] can bcm: fix tx

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]

Date:	Thu, 29 Sep 2011 09:46:46 +0200
From:	Oliver Hartkopp <socketcan@...tkopp.net>
To:	David Miller <davem@...emloft.net>
CC:	netdev@...r.kernel.org, stable@...nel.org, nautsch@...il.com
Subject: Re: [PATCH net/stable] can bcm: fix tx_setup off-by-one errors

On 09/29/11 06:33, David Miller wrote:

> From: Oliver Hartkopp <socketcan@...tkopp.net>
> Date: Fri, 23 Sep 2011 20:23:47 +0200
> 
>> This patch fixes two off-by-one errors that canceled each other out.
>> Checking for the same condition two times in bcm_tx_timeout_tsklet() reduced
>> the count of frames to be sent by one. This did not show up the first time
>> tx_setup is invoked as an additional frame is sent due to TX_ANNONCE.
>> Invoking a second tx_setup on the same item led to a reduced (by 1) number of
>> sent frames.
>>
>> Reported-by: Andre Naujoks <nautsch@...il.com>
>> Signed-off-by: Oliver Hartkopp <socketcan@...tkopp.net>
> 
> Applied, and queued up for -stable.


Hello Dave,

when backporting the patch to an older kernel we discovered a problem this
patch is introducing - which causes a new regression :-(

Could you please revert this patch and dequeue it from stable?

We'll send a new patch for net-next as this fix changes/repairs the behaviour
of the count variable. Therefore it's probably better to have a fixed Kernel
version where the fix emerges. Or should we better not fix it at all and
document it in 'know bugs' ?

Sorry for that noise ...

Thanks,
Oliver
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html