From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx3.redhat.com (mx3.redhat.com [172.16.48.32]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id mALNll3o010908 for ; Fri, 21 Nov 2008 18:47:47 -0500 Received: from joan.kewl.org (joan.kewl.org [212.161.35.248]) by mx3.redhat.com (8.13.8/8.13.8) with ESMTP id mALNlZkS003979 for ; Fri, 21 Nov 2008 18:47:36 -0500 From: Darron Broad To: Vanessa Ezekowitz In-reply-to: <200811211511.14193.vanessaezekowitz@gmail.com> References: <200811211511.14193.vanessaezekowitz@gmail.com> Date: Fri, 21 Nov 2008 23:47:35 +0000 Message-ID: <32121.1227311255@kewl.org> Cc: video4linux-list@redhat.com, linux-dvb@linuxtv.org Subject: Re: cx88 IRQ loop runaway List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: video4linux-list-bounces@redhat.com Errors-To: video4linux-list-bounces@redhat.com List-ID: In message <200811211511.14193.vanessaezekowitz@gmail.com>, Vanessa Ezekowitz wrote: hi. >I'm not sure whose 'department' this is, so I'm sending this email to the v4l/dvb lists... > >About a week ago, my machine started locking up randomly. Eventually figured out the problem and ended up replacing my dead primary SATA disk with a co >uple of older IDE disks. A reinstall of Ubuntu Hardy, and a couple of days of the usual setup and personalizing tweaks later, my system is back up and >running. > >There is still one other SATA disk in my system and it is behaving normally. While adding the replacement disks, I moved it to the port formerly occupi >ed by the dead disk. > >My system, for reasons beyond my understanding, insists on sharing IRQ's among the various PCI devices, despite my explicit settings in the BIOS to assi >gn fixed IRQ's to my PCI slots. One of those IRQ's is being shared between my capture card and SATA controller. Normally, this would not be an issue, > but I seem to have found a nasty bug in the cx88xx driver. > >Without trying to use my capture card at all, every time I access the other SATA disk in my system, the cx88 driver spits out a HORRENDOUS number of wei >rd messages, filling my system logs so fast that after two days, I'd used over 6 GB just in the few logs that sysklogd generates. > >That was enough log data to max out my / partition and grind my system to a halt. Not exactly a good thing. I don't know how long this has been happe >ning, but it is possible that my previous (now dead) drive was simply large enough to contain these huge logs without running out of space. > >I am using the 2.6.27.6 kernel (from kernel.org), and using the v4l/dvb code contained within it, since it supports my card. If necessary, I'll install > the v4l-dvb repository instead. > >My only solution so far is to unload the cx88 driver modules. This is a showstopper - I cannot use or even enable my capture card until this is resolve >d. > >Log excerpt below. I haven't the faintest clue what's causing that garbage at the end of the excerpt. I didn't keep the older logs for obvious reasons >, but that garbage appears multiple times, so it is reproduceable. > >HELP!! >----- Text Import Begin ----- > >----- Text Import End ----- > >That last "IRQ loop detected" gets dumped to the console thousands of times - enough so that the console is completely unusable while the card's driver >is loaded, if the SATA disk is also being used. For example, doing a 'du' on its mount point is enough to send the cx88 driver into a tizzy. There is a bug in the IRQ handler. Please see if this fixes this for you: hg clone http://hg.kewl.org/v4l-dvb/ If this still doesn't solve your issue then we may look at this off list if necessary. Thanks. -- // / {:)==={ Darron Broad \\ \ -- video4linux-list mailing list Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list