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Subjectoops on 2.4.20-pre5-ac2
From
Date
Encountered the following oops on pre5-ac2:

--------------------------------------------------------------------
ALI15X3: IDE controller at PCI slot 00:0f.0
ALI15X3: chipset revision 195
ALI15X3: not 100% native mode: will probe irqs later
Unable to handle kernel NULL pointer dereference at virtual address
00000024
printing eip:
c031f886
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c031f886>] Not tainted
EFLAGS: 00010086
eax: 00000000 ebx: 00000246 ecx: 80007848 edx: 00000cff
esi: dffebf1b edi: dffe0c00 ebp: 00000000 esp: dffebf18
ds: 0018 es: 0018 ss: 0018
Process swapper (pid: 1, stackpage=dffeb000)
Stack: c1329ee8 dffe0c00 c0299a4f c038f0f0 c0329ee8 c01d9837 dffe0c00
c0299a4f
00000000 0000000e 00000001 00000000 c037fa20 00000001 00000000
dffe0c00
c038e7a0 c038ec30 0008e000 c01d9a47 dffebf78 dffe0c00 c0329ee8
00000001
Call Trace: [<c01d9837>] [<c01d9a47>] [<c0105000>] [<c0105078>]
[<c0105000>]
[<c0105676>] [<c0105050>]

Code: 66 81 7d 24 b9 10 74 04 53 9d eb 54 56 a1 cc 15 39 c0 6a 79
<0>Kernel panic: Attempted to kill init!

(c031f886 is at offset 0xb6 in the init_chipset_ali15x3() in
drivers/ide/pci/alim15x3.c. I may be wrong but it appears that the
struct pci_dev *north pointer is the issue.)
--------------------------------------------------------------------


Did not see this problem on the straight 2.4.20-pre5 patch.
Unfortunately, the "ac" patch has some ide fixes that I need to correct
some 24 vs 48 bit addressing issues. Anyone else seeing this issue? I
would be glad to provide more information if needed. Please CC me
personally on replies.


Below is the output of 'lspci -v -x' on my system:


00:07.0 ISA bridge: Acer Laboratories Inc. [ALi] M1533 PCI to ISA Bridge
[Aladdin IV]
Subsystem: Unknown device 1749:1010
Flags: bus master, medium devsel, latency 0
Capabilities: [a0] Power Management version 1
00: b9 10 33 15 0f 00 10 02 00 00 01 06 00 00 00 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 49 17 10 10
30: 00 00 00 00 a0 00 00 00 00 00 00 00 00 00 00 00

00:09.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100]
(rev 08)
Subsystem: Unknown device 1749:2010
Flags: bus master, medium devsel, latency 66, IRQ 11
Memory at fe800000 (32-bit, non-prefetchable) [size=4K]
I/O ports at 1000 [size=64]
Memory at fe900000 (32-bit, non-prefetchable) [size=1M]
Expansion ROM at <unassigned> [disabled] [size=1M]
Capabilities: [dc] Power Management version 2
00: 86 80 29 12 17 00 90 02 08 00 00 02 08 42 00 00
10: 00 00 80 fe 01 10 00 00 00 00 90 fe 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 49 17 10 20
30: 00 00 00 00 dc 00 00 00 00 00 00 00 0b 01 08 38

00:0a.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100]
(rev 08)
Subsystem: Unknown device 1749:2010
Flags: bus master, medium devsel, latency 66, IRQ 10
Memory at fe801000 (32-bit, non-prefetchable) [size=4K]
I/O ports at 1040 [size=64]
Memory at fea00000 (32-bit, non-prefetchable) [size=1M]
Expansion ROM at <unassigned> [disabled] [size=1M]
Capabilities: [dc] Power Management version 2
00: 86 80 29 12 17 00 90 02 08 00 00 02 08 42 00 00
10: 00 10 80 fe 41 10 00 00 00 00 a0 fe 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 49 17 10 20
30: 00 00 00 00 dc 00 00 00 00 00 00 00 0a 01 08 38

00:0b.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100]
(rev 08)
Subsystem: Unknown device 1749:2010
Flags: bus master, medium devsel, latency 66, IRQ 7
Memory at fe802000 (32-bit, non-prefetchable) [size=4K]
I/O ports at 1080 [size=64]
Memory at feb00000 (32-bit, non-prefetchable) [size=1M]
Expansion ROM at <unassigned> [disabled] [size=1M]
Capabilities: [dc] Power Management version 2
00: 86 80 29 12 17 00 90 02 08 00 00 02 08 42 00 00
10: 00 20 80 fe 81 10 00 00 00 00 b0 fe 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 49 17 10 20
30: 00 00 00 00 dc 00 00 00 00 00 00 00 07 01 08 38

00:0f.0 IDE interface: Acer Laboratories Inc. [ALi] M5229 IDE (rev c3)
(prog-if fa)
Subsystem: Unknown device 1749:1020
Flags: bus master, medium devsel, latency 64, IRQ 14
I/O ports at 10c0 [size=16]
Capabilities: [60] Power Management version 2
00: b9 10 29 52 05 00 90 02 c3 fa 01 01 00 40 00 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: c1 10 00 00 00 00 00 00 00 00 00 00 49 17 20 10
30: 00 00 00 00 60 00 00 00 00 00 00 00 0e 01 02 04

00:11.0 Bridge: Acer Laboratories Inc. [ALi] M7101 PMU
Subsystem: Unknown device 1749:1040
Flags: medium devsel
00: b9 10 01 71 00 00 00 02 00 00 80 06 00 00 00 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 49 17 40 10
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

00:14.0 PCI bridge: Crucial Technology: Unknown device 3330 (rev 03)
(prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, medium devsel, latency 64
Bus: primary=00, secondary=01, subordinate=01, sec-latency=68
Capabilities: [40] Power Management version 2
Capabilities: [50] PCI-X non-bridge device.
00: 44 13 30 33 17 00 b0 02 03 00 04 06 08 40 01 00
10: 00 00 00 00 00 00 00 00 00 01 01 44 f0 00 a0 22
20: f0 ff 00 00 f0 ff 00 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 40 00 00 00 00 00 00 00 00 00 04 00

00:18.0 Host bridge: Crucial Technology: Unknown device 3320 (rev 03)
Subsystem: Micron: Unknown device 1042
Flags: bus master, 66Mhz, medium devsel, latency 32
00: 44 13 20 33 07 01 a0 02 03 00 00 06 08 20 80 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 42 10 42 10
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

00:18.1 RAM memory: Crucial Technology: Unknown device 3321 (rev 03)
Subsystem: Micron: Unknown device 1042
Flags: 66Mhz, medium devsel
00: 44 13 21 33 02 00 a0 02 03 00 00 05 08 40 80 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 42 10 42 10
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00



Thanks,

Dan

--
Dan Eaton


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