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SubjectRe: Linux 2.4.20-pre6
Hi,
same problem here.
Kernel crashes at boot:

.......
ICH3M: IDE Controller on PCI bus 0 dev f9
PCI: Device 00:1f.1 not available becaus of resource collisions
PCI: Assigned IRQ11 for device 00:1f.1
Unable to handle kernel NULL pointer dereference at virtual address 00000010

printing eip:
c025a902
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010 [<c025a902>] Not tainted
EFLAGS: 00010097
eax: 00000010 ebx: 0000000a ecx: 00000010 edx: fffffffe
esi: c030cf23 edi: 00000000 ebp: c030d31f esp: c161bea0
.....


it's a Compaq EVO N800c laptop with 845MP chipset.

with kernel 2.4.20-pre5 it boots but no chipset support(dma).
with kernel 2.4.20-pre1-ac1 no problems:


....
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PIIX4: IDE controller on PCI bus 00 dev f9
PCI: Enabling device 00:1f.1 (0005 -> 0007)
PCI: Assigned IRQ 11 for device 00:1f.1
PIIX4: chipset revision 2
PIIX4: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0x4440-0x4447, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0x4448-0x444f, BIOS settings: hdc:DMA, hdd:pio
hda: IC25T060ATCS05-0, ATA DISK drive
hdc: DW-28E, ATAPI CD/DVD-ROM drive
ide2: ports already in use, skipping probe
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: host protected area => 1
hda: 117210240 sectors (60012 MB) w/1768KiB Cache, CHS=7752/240/63,
UDMA(100)
....


#lspci -v
00:00.0 Host bridge: Intel Corp. 82845 845 (Brookdale) Chipset Host
Bridge (rev 04)
Subsystem: Compaq Computer Corporation: Unknown device 004a
Flags: bus master, fast devsel, latency 0
Memory at 60000000 (32-bit, prefetchable) [size=256M]
Capabilities: [e4] #09 [d104]
Capabilities: [a0] AGP version 2.0

00:01.0 PCI bridge: Intel Corp. 82845 845 (Brookdale) Chipset AGP Bridge
(rev 04) (prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, fast devsel, latency 64
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00003000-00003fff
Memory behind bridge: 40300000-403fffff
Prefetchable memory behind bridge: 48000000-4fffffff

00:1e.0 PCI bridge: Intel Corp. 82801BAM/CAM PCI Bridge (rev 42)
(prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=03, sec-latency=32
I/O behind bridge: 00002000-00002fff
Memory behind bridge: 40000000-402fffff

00:1f.0 ISA bridge: Intel Corp. 82801CAM ISA Bridge (LPC) (rev 02)
Flags: bus master, medium devsel, latency 0

00:1f.1 IDE interface: Intel Corp. 82801CAM IDE U100 (rev 02) (prog-if
8a [Master SecP PriP])
Subsystem: Compaq Computer Corporation: Unknown device 004a
Flags: bus master, medium devsel, latency 0, IRQ 11
I/O ports at 01f0
I/O ports at 03f4
I/O ports at 0170
I/O ports at 0374
I/O ports at 4440 [size=16]
Memory at 20000000 (32-bit, non-prefetchable) [size=1K]

00:1f.5 Multimedia audio controller: Intel Corp. 82801CA/CAM AC'97 Audio
(rev 02)
Subsystem: Compaq Computer Corporation: Unknown device 004a
Flags: bus master, medium devsel, latency 0, IRQ 5
I/O ports at 4000 [size=256]
I/O ports at 4400 [size=64]

01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility
M7 LW (prog-if 00 [VGA])
Subsystem: Compaq Computer Corporation: Unknown device 004a
Flags: bus master, stepping, 66Mhz, medium devsel, latency 66, IRQ 11
Memory at 48000000 (32-bit, prefetchable) [size=128M]
I/O ports at 3000 [size=256]
Memory at 40300000 (32-bit, non-prefetchable) [size=64K]
Expansion ROM at <unassigned> [disabled] [size=128K]
Capabilities: [58] AGP version 2.0
Capabilities: [50] Power Management version 2

02:04.0 Communication controller: Lucent Microelectronics LT WinModem
(rev 02)
Subsystem: AMBIT Microsystem Corp.: Unknown device 0450
Flags: bus master, medium devsel, latency 66, IRQ 5
Memory at 40200000 (32-bit, non-prefetchable) [size=256]
I/O ports at 2440 [size=8]
I/O ports at 2000 [size=256]
Capabilities: [f8] Power Management version 2

02:06.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus
Controller (rev 02)
Subsystem: Compaq Computer Corporation: Unknown device 004a
Flags: bus master, medium devsel, latency 168, IRQ 11
Memory at 40000000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=02, secondary=03, subordinate=03, sec-latency=176
I/O window 0: 00000000-00000003
I/O window 1: 00000000-00000003
16-bit legacy interface ports at 0001

02:08.0 Ethernet controller: Intel Corp. 82801CAM (ICH3) Chipset
Ethernet Controller (rev 42)
Subsystem: Compaq Computer Corporation: Unknown device 0093
Flags: bus master, medium devsel, latency 66, IRQ 10
Memory at 40080000 (32-bit, non-prefetchable) [size=4K]
I/O ports at 2400 [size=64]
Capabilities: [dc] Power Management version 2

02:0e.0 USB Controller: NEC Corporation USB (rev 41) (prog-if 10 [OHCI])
Subsystem: Compaq Computer Corporation: Unknown device 004a
Flags: bus master, medium devsel, latency 40, IRQ 10
Memory at 40100000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 2

02:0e.1 USB Controller: NEC Corporation USB (rev 41) (prog-if 10 [OHCI])
Subsystem: Compaq Computer Corporation: Unknown device 004a
Flags: bus master, medium devsel, latency 40, IRQ 10
Memory at 40180000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 2

02:0e.2 USB Controller: NEC Corporation USB 2.0 (rev 02) (prog-if 20 [EHCI])
Subsystem: Compaq Computer Corporation: Unknown device 004a
Flags: bus master, medium devsel, latency 64, IRQ 10
Memory at 40280000 (32-bit, non-prefetchable) [size=256]
Capabilities: [40] Power Management version 2





cu
Andreas

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