From: Marc MERLIN <marc@merlins.org>
To: David Miller <davem@davemloft.net>
Cc: eric.dumazet@gmail.com, Larry.Finger@lwfinger.net,
bhutchings@solarflare.com, linux-wireless@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: 3.2.8/amd64 full interrupt hangs and deadlocks under big network copies (page allocation failure)
Date: Mon, 9 Apr 2012 12:46:57 -0700 [thread overview]
Message-ID: <20120409194657.GA24754@merlins.org> (raw)
In-Reply-To: <20120409.153452.1284163346306246866.davem@davemloft.net>
On Mon, Apr 09, 2012 at 03:34:52PM -0400, David Miller wrote:
> From: Eric Dumazet <eric.dumazet@gmail.com>
> Date: Mon, 09 Apr 2012 21:11:12 +0200
>
> > I think Marc posted stack traces showing problem on transmit side.
> ...
> > I dont really understand how it can happen, with MTU=1500
>
> Depending upon the configuration and the driver, wireless can need
> more headroom. For encryption an extra 8 bytes are necessary, and the
> driver may request a variable amount of extra headroom via
> ->hw.extra_tx_headroom
>
> What wireless device are we dealing with again?
Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
Copyright(c) 2003-2011 Intel Corporation
iwlwifi 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
iwlwifi 0000:03:00.0: setting latency timer to 64
iwlwifi 0000:03:00.0: pci_resource_len = 0x00002000
iwlwifi 0000:03:00.0: pci_resource_base = ffffc900057a4000
iwlwifi 0000:03:00.0: HW Revision ID = 0x0
iwlwifi 0000:03:00.0: irq 47 for MSI/MSI-X
iwlwifi 0000:03:00.0: Detected Intel(R) Ultimate N WiFi Link 5300 AGN, REV=0x24
iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
iwlwifi 0000:03:00.0: device EEPROM VER=0x11e, CALIB=0x4
iwlwifi 0000:03:00.0: Device SKU: 0Xf0
iwlwifi 0000:03:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels
along with iwlwifi-5000-5.ucode
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/
next prev parent reply other threads:[~2012-04-09 20:15 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-29 16:38 3.2.8/amd64 full interrupt hangs and deadlocks under big network copies (page allocation failure) Marc MERLIN
[not found] ` <20120311183244.GA14001@merlins.org>
[not found] ` <20120329053111.GD24933@merlins.org>
2012-03-29 16:41 ` Marc MERLIN
2012-03-29 18:09 ` Ben Hutchings
2012-03-29 21:19 ` Marc MERLIN
2012-04-09 17:20 ` Marc MERLIN
2012-04-09 18:12 ` David Miller
2012-04-09 18:36 ` Marc MERLIN
2012-04-09 18:37 ` David Miller
2012-04-09 18:58 ` Larry Finger
2012-04-09 19:11 ` Eric Dumazet
2012-04-09 19:34 ` David Miller
2012-04-09 19:46 ` Marc MERLIN [this message]
2012-04-10 3:56 ` Eric Dumazet
2012-04-10 5:11 ` Marc MERLIN
2012-04-10 6:11 ` Eric Dumazet
2012-04-11 5:27 ` Marc MERLIN
2012-04-11 5:43 ` Eric Dumazet
2012-04-11 6:30 ` [PATCH] tcp: avoid order-1 allocations on wifi and tx path Eric Dumazet
2012-04-11 7:38 ` Eric Dumazet
2012-04-11 14:12 ` David Miller
2012-04-11 14:11 ` David Miller
2012-04-11 6:08 ` [PATCH] net: allow pskb_expand_head() to get maximum tailroom Eric Dumazet
2012-04-11 14:11 ` David Miller
2012-07-15 21:59 ` 3.4.4/amd64 full interrupt hangs under big nfs copies Marc MERLIN
2012-07-16 6:18 ` Eric Dumazet
2012-07-16 15:18 ` Marc MERLIN
2012-07-16 16:21 ` Eric Dumazet
2012-07-16 17:17 ` Marc MERLIN
2013-02-19 4:05 ` 3.7.8/amd64 full interrupt hangs due to iwlwifi under big nfs copies out Marc MERLIN
2013-02-19 5:17 ` Eric Dumazet
2013-02-19 5:26 ` Marc MERLIN
2013-02-19 10:03 ` Johannes Berg
2013-02-19 16:18 ` Marc MERLIN
2013-02-19 16:36 ` Eric Dumazet
2013-02-19 16:21 ` Eric Dumazet
2013-02-20 9:12 ` Johannes Berg
2013-02-20 9:15 ` Johannes Berg
2013-02-20 15:11 ` Eric Dumazet
2013-02-20 16:20 ` Johannes Berg
2013-02-20 16:55 ` Eric Dumazet
2013-02-20 16:59 ` Johannes Berg
2013-02-20 17:39 ` Eric Dumazet
2013-02-20 17:01 ` Johannes Berg
2013-02-20 17:24 ` Eric Dumazet
2013-02-20 18:16 ` Johannes Berg
2013-02-20 19:17 ` Eric Dumazet
2013-02-20 19:58 ` Johannes Berg
2013-02-20 20:14 ` Eric Dumazet
2013-02-20 20:27 ` Johannes Berg
2013-02-20 20:09 ` Johannes Berg
2013-02-23 6:14 ` Marc MERLIN
2013-02-26 20:54 ` Johannes Berg
2013-06-18 16:52 ` Eric Dumazet
2013-06-18 17:04 ` Johannes Berg
2013-06-19 13:09 ` Stanislaw Gruszka
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