From: Larry Finger <Larry.Finger@lwfinger.net>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Neal Cardwell <ncardwell@google.com>,
"David S. Miller" <davem@davemloft.net>,
John W Linville <linville@tuxdriver.com>,
linux-wireless <linux-wireless@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: Regression associated with commit c8628155ece3 - "tcp: reduce out_of_order memory use"
Date: Fri, 24 Aug 2012 11:29:22 -0500 [thread overview]
Message-ID: <5037ABE2.2020407@lwfinger.net> (raw)
In-Reply-To: <1345824094.19483.9.camel@edumazet-glaptop>
On 08/24/2012 11:01 AM, Eric Dumazet wrote:
> On Fri, 2012-08-24 at 10:49 -0500, Larry Finger wrote:
>
>> There is nothing in kernel log when it happens. The file STRACE is attached.
>>
>
> So there is indeed a corruption. What was the driver you used in this
> case ?
The only driver that shows this problem is r8712u. One thought that I just had
is that this driver does not use mac80211, which is why it is in staging.
Instead it uses a Realtek soft MAC layer derived from the obsolete softmac
driver that was in the kernel in the 2.6.20 time frame. That means that none of
the skbs have ever been cloned by any part of the wireless code.
Larry
next prev parent reply other threads:[~2012-08-24 16:29 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-22 4:07 Regression associated with commit c8628155ece3 - "tcp: reduce out_of_order memory use" Larry Finger
2012-08-22 4:26 ` David Miller
2012-08-22 5:15 ` Eric Dumazet
2012-08-22 16:00 ` Larry Finger
2012-08-22 21:33 ` Larry Finger
2012-08-23 4:03 ` Eric Dumazet
2012-08-23 20:57 ` Larry Finger
2012-08-23 21:26 ` Eric Dumazet
2012-08-24 14:09 ` Larry Finger
2012-08-24 14:55 ` Eric Dumazet
2012-08-24 15:49 ` Larry Finger
2012-08-24 16:01 ` Eric Dumazet
2012-08-24 16:29 ` Larry Finger [this message]
2012-08-24 15:19 ` David Miller
2012-08-24 15:58 ` Larry Finger
2012-08-24 16:18 ` Eric Dumazet
2012-08-24 16:23 ` Eric Dumazet
2012-08-24 16:58 ` Larry Finger
2012-08-24 17:47 ` Eric Dumazet
2012-08-27 17:55 ` Larry Finger
2012-08-27 18:21 ` Eric Dumazet
2012-08-27 20:39 ` Larry Finger
2012-09-10 8:39 ` Eric Dumazet
2012-09-10 14:53 ` Larry Finger
2012-09-10 15:04 ` Eric Dumazet
2012-09-10 17:55 ` [PATCH] staging: r8712u: fix bug in r8712_recv_indicatepkt() Eric Dumazet
2012-09-10 18:34 ` Larry Finger
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