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Date: Fri, 14 Nov 2008 15:08:59 GMT
From: Andreas Wehrmann <a_wehrmann@hotmail.com>
To: freebsd-gnats-submit@FreeBSD.org
Subject: Interrupt Storm when plugging in PCMCIA Card (HP NC8000 Notebook)
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>Number:         128870
>Category:       kern
>Synopsis:       [pccbb] Interrupt Storm when plugging in PCMCIA Card (HP NC8000 Notebook)
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Nov 14 15:10:02 UTC 2008
>Closed-Date:    
>Last-Modified:  Mon Jun  4 11:30:08 UTC 2012
>Originator:     Andreas Wehrmann
>Release:        7.0-p5
>Organization:
>Environment:
FreeBSD hostname 7.0-RELEASE-p5 FreeBSD 7.0-RELEASE-p5 #0: Wed Oct  1 10:10:12 UTC 2008     root@i386-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
All this is happening on a HP NC8000 Laptop.

I tried to configure my PCMCIA WLAN Card (Allnet ALL0282A; AR5211 chip)
recently. First thing I wanted to do is to scan for networks, so I set
the card "up" and noticed a lot of Interrupt storm warnings on the console:

interrupt storm detected on "irq10:"; throttling interrupt source

The network scan didn't succeed btw.

I tried another WLAN Card: Conceptronic C54RC (Version 2.0) R61 chip but
the exact same thing happened again. I then tried a serial card (PCMCIA
card that offers a COM-Port) and when booting up, I got those storms as well.

I used the following command to determine, which driver handles IRQ10:
"ps ax | grep irq".

The following showed up:
   22  ??  WL     0:00.57 [irq10: cbb0 cbb1+*]

Therefore I suppose there is a bug in the interrupt handling in the cbb
driver, because all these card work (on the same machine) under Linux and
Windows XP.
>How-To-Repeat:
Plug in some PCMCIA Card.
>Fix:


>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback 
State-Changed-By: jh 
State-Changed-When: Fri Sep 23 20:23:33 UTC 2011 
State-Changed-Why:  
Can you still reproduce this on recent FreeBSD versions? 

http://www.freebsd.org/cgi/query-pr.cgi?pr=128870 

From: Andreas Wehrmann <a_wehrmann@hotmail.com>
To: <bug-followup@freebsd.org>
Cc:  
Subject: Re: kern/128870: [pccbb] Interrupt Storm when plugging in PCMCIA
 Card (HP NC8000 Notebook)
Date: Sun, 2 Oct 2011 09:01:25 +0000

 --_64ac00f1-9824-4e2a-ac1f-7c2c70f4a61d_
 Content-Type: text/plain; charset="iso-8859-1"
 Content-Transfer-Encoding: quoted-printable
 
 
 That's a yes: I've just tried 9.0-BETA3 and the interrupt storm still occurs.
 
 --_64ac00f1-9824-4e2a-ac1f-7c2c70f4a61d_--
State-Changed-From-To: feedback->open 
State-Changed-By: jh 
State-Changed-When: Tue Oct 4 17:47:49 UTC 2011 
State-Changed-Why:  
Still a problem on 9.0-BETA3. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=128870 

From: Konstantin Vasilev <konstantin.vasiliev@gmail.com>
To: bug-followup@FreeBSD.org, a_wehrmann@hotmail.com
Cc:  
Subject: Re: kern/128870: [pccbb] Interrupt Storm when plugging in PCMCIA
 Card (HP NC8000 Notebook)
Date: Mon, 04 Jun 2012 15:23:23 +0400

 Hi all,
 
 I have the same problem on 9.0 RELEASE.
 Wireless card driver is ath.
 Interrupt storm dramatically slows my system.
 
 --
 With best regards,
 Konstantin Vasilev
 
 
  
>Unformatted:
