From: Larry Finger <Larry.Finger@lwfinger.net>
To: Eric Dumazet <eric.dumazet@gmail.com>,
Neal Cardwell <ncardwell@google.com>,
"David S. Miller" <davem@davemloft.net>,
John W Linville <linville@tuxdriver.com>,
linux-wireless <linux-wireless@vger.kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Regression associated with commit c8628155ece3 - "tcp: reduce out_of_order memory use"
Date: Tue, 21 Aug 2012 23:07:46 -0500 [thread overview]
Message-ID: <50345B12.1050600@lwfinger.net> (raw)
Hi,
The commit entitled "tcp: reduce out_of_order memory use" turns out to cause
problems with a number of USB drivers.
The first one called to my attention was for staging/r8712u. For this driver,
there are problems with SSL communications as reported in
https://bugzilla.redhat.com/show_bug.cgi?id=847525.
Other drivers including rtl8187, rtl8192cu and rt2800usb cannot connect to a
WPA1- or WEP-encrypted AP, but work fine with WPA2. The rtl8192cu problem is
reported in https://bugzilla.kernel.org/show_bug.cgi?id=46171.
I find it hard to understand why this patch should cause these effects; however,
I have verified that a kernel generated from "git checkout e86b2919" works fine.
This commit is immediately before the patch in question.
Note, this patch was applied during the merge between 3.3 and 3.4. The
regression has been undiscovered for some time.
Any help on this problem will be appreciated.
Larry
next reply other threads:[~2012-08-22 4:07 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-22 4:07 Larry Finger [this message]
2012-08-22 4:26 ` Regression associated with commit c8628155ece3 - "tcp: reduce out_of_order memory use" 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
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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