ICH9 panic/instability on recent kernel

[Michael Sinatra]

Hi,

I have a core-2 system with a 3ware SATA RAID controller for the main 
disks and the built-in Intel ICH9 4-port SATA controller that is only 
used for the DVDR.  An 8-STABLE kernel csup'd and compiled on April 25 
works fine on this system.  Kernels from source csup'd this week are 
extremely unstable and usually panic or hang just minutes after booting. 
  The following warning messages appear after the kernel probes the SATA 
controller and/or ICH9 USB controller and continue about once per 1-2 
seconds until the system crashes:

May 13 14:21:05 sonicyouth kernel: unknown: WARNING - ATAPI_IDENTIFY 
requeued due to channel reset LBA=0

Disabling the ICH9 SATA controller in the BIOS allows the system to boot 
and run normally.

Changes were made on April 28 to allow better support for 6-port ICH9 
controllers (SVN rev 221156) and I am wondering if my controller is now 
being incorrectly recognized.

Here's the relevant kernel messages:

May 13 13:52:53 sonicyouth kernel: atapci1: <Intel ICH9 SATA300 
controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x1c4
0-0x1c4f,0x1c30-0x1c3f at device 31.2 on pci0
May 13 13:52:53 sonicyouth kernel: ata0: <ATA channel 0> on atapci1
May 13 13:52:53 sonicyouth kernel: ata0: [ITHREAD]
May 13 13:52:53 sonicyouth kernel: ata1: <ATA channel 1> on atapci1
May 13 13:52:53 sonicyouth kernel: ata1: [ITHREAD]
May 13 13:52:53 sonicyouth kernel: atapci2: <Intel ICH9 SATA300 
controller> port 0x1cb8-0x1cbf,0x1cac-0x1caf,0x1cb0-0x1cb7
,0x1ca8-0x1cab,0x1c60-0x1c6f,0x1c50-0x1c5f irq 18 at device 31.5 on pci0
May 13 13:52:53 sonicyouth kernel: atapci2: [ITHREAD]
May 13 13:52:53 sonicyouth kernel: ata3: <ATA channel 0> on atapci2
May 13 13:52:53 sonicyouth kernel: ata3: [ITHREAD]
May 13 13:52:53 sonicyouth kernel: ata4: <ATA channel 1> on atapci2
May 13 13:52:53 sonicyouth kernel: ata4: [ITHREAD]

If I csup the most recent kernel sources, I get the same problem. 
However, if, after csuping the latest kernel sources, I then fetch the 
version of sys/dev/ata/ata-all.c as of April 27, everything works fine. 
  Here's the output of pciconf -l:

hostb0 at pci0:0:0:0:      class=0x060000 card=0xd98015d9 chip=0x29e08086 
rev=0x01 hdr=0x00
pcib1 at pci0:0:1:0:       class=0x060400 card=0xd98015d9 chip=0x29e18086 
rev=0x01 hdr=0x01
pcib2 at pci0:0:6:0:       class=0x060400 card=0xd98015d9 chip=0x29e98086 
rev=0x01 hdr=0x01
em0 at pci0:0:25:0:        class=0x020000 card=0x10bd15d9 chip=0x10bd8086 
rev=0x02 hdr=0x00
uhci0 at pci0:0:26:0:      class=0x0c0300 card=0xd98015d9 chip=0x29378086 
rev=0x02 hdr=0x00
uhci1 at pci0:0:26:1:      class=0x0c0300 card=0xd98015d9 chip=0x29388086 
rev=0x02 hdr=0x00
uhci2 at pci0:0:26:2:      class=0x0c0300 card=0xd98015d9 chip=0x29398086 
rev=0x02 hdr=0x00
ehci0 at pci0:0:26:7:      class=0x0c0320 card=0xd98015d9 chip=0x293c8086 
rev=0x02 hdr=0x00
none0 at pci0:0:27:0:      class=0x040300 card=0xd98015d9 chip=0x293e8086 
rev=0x02 hdr=0x00
pcib3 at pci0:0:28:0:      class=0x060400 card=0xd98015d9 chip=0x29408086 
rev=0x02 hdr=0x01
uhci3 at pci0:0:29:0:      class=0x0c0300 card=0xd98015d9 chip=0x29348086 
rev=0x02 hdr=0x00
uhci4 at pci0:0:29:1:      class=0x0c0300 card=0xd98015d9 chip=0x29358086 
rev=0x02 hdr=0x00
uhci5 at pci0:0:29:2:      class=0x0c0300 card=0xd98015d9 chip=0x29368086 
rev=0x02 hdr=0x00
ehci1 at pci0:0:29:7:      class=0x0c0320 card=0xd98015d9 chip=0x293a8086 
rev=0x02 hdr=0x00
pcib5 at pci0:0:30:0:      class=0x060401 card=0xd98015d9 chip=0x244e8086 
rev=0x92 hdr=0x01
isab0 at pci0:0:31:0:      class=0x060100 card=0xd98015d9 chip=0x29168086 
rev=0x02 hdr=0x00
atapci1 at pci0:0:31:2:    class=0x01018a card=0xd98015d9 chip=0x29208086 
rev=0x02 hdr=0x00
none1 at pci0:0:31:3:      class=0x0c0500 card=0xd98015d9 chip=0x29308086 
rev=0x02 hdr=0x00
atapci2 at pci0:0:31:5:    class=0x010185 card=0xd98015d9 chip=0x29268086 
rev=0x02 hdr=0x00
none2 at pci0:0:31:6:      class=0x118000 card=0x000015d9 chip=0x29328086 
rev=0x02 hdr=0x00
vgapci0 at pci0:1:0:0:     class=0x030000 card=0x216619da chip=0x0e2210de 
rev=0xa1 hdr=0x00
none3 at pci0:1:0:1:       class=0x040300 card=0x216619da chip=0x0beb10de 
rev=0xa1 hdr=0x00
twa0 at pci0:3:0:0:        class=0x010400 card=0x100413c1 chip=0x100413c1 
rev=0x01 hdr=0x00
pcib4 at pci0:5:0:0:       class=0x060400 card=0x00000000 chip=0x032c8086 
rev=0x09 hdr=0x01
ioapic0 at pci0:5:0:1:     class=0x080020 card=0xd98015d9 chip=0x03268086 
rev=0x09 hdr=0x00
fwohci0 at pci0:17:3:0:    class=0x0c0010 card=0xba8015d9 chip=0x8023104c 
rev=0x00 hdr=0x00
atapci0 at pci0:17:4:0:    class=0x010185 card=0x82131283 chip=0x82131283 
rev=0x00 hdr=0x00

Anyone else having issues?

michael