Date: Sat, 18 Jun 2005 22:40:15 GMT From: Dmitry Pryanishnikov <dmitry@atlantis.dp.ua> To: freebsd-i386@FreeBSD.org Subject: Re: i386/78929: atapicam prevents boot, system hangs Message-ID: <200506182240.j5IMeFG4080118@freefall.freebsd.org>
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The following reply was made to PR i386/78929; it has been noted by GNATS. From: Dmitry Pryanishnikov <dmitry@atlantis.dp.ua> To: bug-followup@FreeBSD.org, harrycoin@quietfountain.com, sos@FreeBSD.org, thomas@FreeBSD.org Cc: Subject: Re: i386/78929: atapicam prevents boot, system hangs Date: Sun, 19 Jun 2005 01:39:42 +0300 Hello! I've just verified that problem exists even under newest 6-CURRENT. Both my ATAPI drives behave in the similar way: on ICH4 they work with ATAPICAM, but on Promise Ultra 100 TX2 they cause interrupt storm. E.g. I boot GENERIC kernel, verbose boot messages are in ftp://external.atlantis.dp.ua/FreeBSD/PR/78929/dmesg-6 and then I kldload atapicam. It doesn't output anything at this point (/dev/cd0 doesn't appear), but minute (!) later kernel outputs "ata2: reiniting channel" and then almost hanges. If I press <ALT><CTRL><ESC>, it slowly, letter-by-letter, enters KDB prompt. Then I can issue "show int" command, and it shows me millions interrupts through IRQ22, which is being used by Promise Ultra only. Removing "device atapicd" from kernel doesn't cure this problem. What can I do to help hunting on this bug? ATA+ATAPICAM is quite complex creature, so I don't know where to start from... Sincerely, Dmitry -- Atlantis ISP, System Administrator nic-hdl: LYNX-RIPE
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