This is part of dmesg from ubuntu 5 distro bootable CD-ROM with kernel 2.6.12-9-386 [4294690.705000] NFORCE2: IDE controller at PCI slot 0000:00:09.0 [4294690.705000] NFORCE2: chipset revision 162 [4294690.705000] NFORCE2: not 100% native mode: will probe irqs later [4294690.705000] NFORCE2: 0000:00:09.0 (rev a2) UDMA133 controller [4294690.705000] ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA [4294690.705000] ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA [4294690.705000] Probing IDE interface ide0... [4294691.377000] hda: TOSHIBA CD-ROM XM-6702B, ATAPI CD/DVD-ROM drive [4294692.091000] hdb: YAMAHA CRW-F1E, ATAPI CD/DVD-ROM drive [4294692.142000] ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 [4294692.153000] Probing IDE interface ide1... [4294692.825000] hdc: Pioneer DVD-ROM ATAPIModel DVD-106S 012, ATAPI CD/DVD-ROM drive [4294693.131000] ide1 at 0x170-0x177,0x376 on irq 15 [4294693.131000] HPT372A: IDE controller at PCI slot 0000:01:0a.0 [4294693.131000] ACPI: PCI Interrupt Link [APC1] enabled at IRQ 16 [4294693.131000] ACPI: PCI Interrupt 0000:01:0a.0[A] -> Link [APC1] -> GSI 16 (level, high) -> IRQ 16 [4294693.131000] HPT372A: chipset revision 2 [4294693.131000] hpt: HPT372N detected, using 372N timing. [4294693.131000] FREQ: 126 PLL: 45 [4294694.942000] HPT372A: 100% native mode on irq 16 [4294694.942000] hpt: no known IDE timings, disabling DMA. [4294694.943000] hpt: no known IDE timings, disabling DMA. [4294694.943000] Probing IDE interface ide2... [4294695.206000] hde: WDC WD800BB-00CAA1, ATA DISK drive [4294695.461000] hdf: WDC WD800BB-00BSA0, ATA DISK drive [4294695.512000] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [4294695.512000] printing eip: [4294695.512000] f890f2fe [4294695.512000] *pde = 00000000 [4294695.512000] Oops: 0000 [#1] [4294695.512000] Modules linked in: ide_generic pdc202xx_new aec62xx alim15x3 atiixp cmd64x cs5520 cs5530 cy82c693 generic hpt34x ns87415 opti621 pdc202xx_old piix rz1000 sc1200 serverworks siimage sis5513 slc90e66 triflex trm290 via82cxxx floppy parport_pc parport fbcon tileblit font bitblit vga16fb vgastate vesafb cfbcopyarea cfbimgblt cfbfillrect softcursor usbserial usbkbd usb_storage thermal processor fan mousedev evdev usbhid sd_mod sata_sil hpt366 ohci1394 ieee1394 amd74xx ide_core sata_nv libata scsi_mod ehci_hcd ohci_hcd usbcore unix [4294695.512000] CPU: 0 [4294695.512000] EIP: 0060:[<f890f2fe>] Not tainted VLI [4294695.512000] EFLAGS: 00010282 (2.6.12-9-386) [4294695.512000] EIP is at pci_bus_clock_list+0x9/0x1f [hpt366] [4294695.512000] eax: 00000000 ebx: 00000051 ecx: 80015050 edx: 0000000c [4294695.512000] esi: 30070000 edi: 00000040 ebp: dff76c00 esp: f7ef7ef8 [4294695.512000] ds: 007b es: 007b ss: 0068 [4294695.512000] Process modprobe (pid: 12446, threadinfo=f7ef6000 task=dfd47040) [4294695.512000] Stack: f890f604 0000000c 00000000 0000000c 0cf76c00 00000000 00f76c00 f88c6bd8 [4294695.512000] f88ba9eb f75f9c3e f88c6b48 f88b427d f88c6bd8 0000000c 00000010 00000246 [4294695.512000] 00000001 f7ef7f6c f88c6b48 00000000 c0000000 f7ef6000 f88b42da f88c6b48 [4294695.512000] Call Trace: [4294695.512000] [<f890f604>] hpt372_tune_chipset+0xbd/0x112 [hpt366] [4294695.512000] [<f88b427d>] probe_hwif+0x33f/0x38c [ide_core] [4294695.512000] [<f88b42da>] probe_hwif_init_with_fixup+0x10/0x6c [ide_core] [4294695.512000] [<f88b709e>] ide_setup_pci_device+0x47/0x7d [ide_core] [4294695.512000] [<f891097a>] init_setup_hpt37x+0xd/0x10 [hpt366] [4294695.512000] [<f88b7205>] ide_scan_pcidev+0x34/0x4d [ide_core] [4294695.512000] [<f88b7245>] ide_scan_pcibus+0x27/0x8e [ide_core] [4294695.512000] [<f8a69005>] ide_generic_init+0x5/0x12 [ide_generic] [4294695.512000] [<c0129682>] sys_init_module+0xb5/0x172 [4294695.512000] [<c0102ef9>] syscall_call+0x7/0xb [4294695.512000] Code: 7d 36 83 c3 04 ac ae 75 08 84 c0 75 f8 31 c0 eb 04 19 c0 0c 01 85 c0 74 d8 eb dd 31 c0 5b 5e 5f 5d c3 8b 44 24 08 0f b6 54 24 04 <80> 38 00 74 0d 38 10 75 04 8b 40 04 c3 83 c0 08 eb ee 8b 40 04 - : send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html