I am having problems with something that looks like a PCI IRQ routing problem. Everything worked just fine up until test12-pre7. Test12-pre8 did not even boot, it hung when initializing the SCSI adapter. Everything after that (including test12) booted successfully, but crashed when I loaded the Firewire OHCI driver. All other drivers seem to work and if I don't try to load the IEEE-1394 subsystem, then the machine runs stable. I can observe the same problem with all test13-preX kernels up to pre5. Here is the output of lspci -v (this was done with a 2.2.18 kernel, which is what I use for "normal" work): 00:00.0 Host bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3] (rev 04) Flags: bus master, medium devsel, latency 16 Memory at e0000000 (32-bit, prefetchable) Capabilities: <available only to root> 00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3 AGP] (prog-if 00 [Normal decode]) Flags: bus master, 66Mhz, medium devsel, latency 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 Memory behind bridge: e4000000-e7ffffff Prefetchable memory behind bridge: e8000000-e8ffffff 00:07.0 ISA bridge: VIA Technologies, Inc. VT82C586/A/B PCI-to-ISA [Apollo VP] (rev 47) Subsystem: VIA Technologies, Inc. MVP3 ISA Bridge Flags: bus master, stepping, medium devsel, latency 0 00:07.1 IDE interface: VIA Technologies, Inc. VT82C586 IDE [Apollo] (rev 06) (prog-if 8a [Master SecP PriP]) Flags: bus master, medium devsel, latency 32 I/O ports at 6400 00:07.2 USB Controller: VIA Technologies, Inc. VT82C586B USB (rev 02) (prog-if 00 [UHCI]) Subsystem: Unknown device 0925:1234 Flags: bus master, medium devsel, latency 32, IRQ 11 I/O ports at 6800 00:07.3 Host bridge: VIA Technologies, Inc. VT82C586B ACPI (rev 10) Flags: medium devsel 00:09.0 Multimedia video controller: Brooktree Corporation Bt848 TV with DMA push (rev 12) Flags: bus master, medium devsel, latency 32, IRQ 9 Memory at ea004000 (32-bit, prefetchable) 00:0a.0 FireWire (IEEE 1394): Texas Instruments: Unknown device 8020 (prog-if 10 [OHCI]) Subsystem: Texas Instruments: Unknown device 8010 Flags: bus master, medium devsel, latency 32, IRQ 9 Memory at ea006000 (32-bit, non-prefetchable) Memory at ea000000 (32-bit, non-prefetchable) Capabilities: <available only to root> 00:0b.0 Ethernet controller: VIA Technologies, Inc. VT86C100A [Rhine 10/100] (rev 06) Subsystem: D-Link System Inc DFE-530TX Flags: bus master, medium devsel, latency 64, IRQ 12 I/O ports at 6c00 Memory at ea005000 (32-bit, non-prefetchable) Expansion ROM at e9000000 [disabled] 00:0c.0 SCSI storage controller: Adaptec AHA-7850 (rev 03) Subsystem: Adaptec AHA-2904/Integrated AIC-7850 Flags: bus master, medium devsel, latency 32, IRQ 10 I/O ports at 7000 Memory at ea007000 (32-bit, non-prefetchable) Capabilities: <available only to root> 01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200 AGP (rev 01) (prog-if 00 [VGA]) Subsystem: Matrox Graphics, Inc. Millennium G200 AGP Flags: bus master, medium devsel, latency 64 Memory at e8000000 (32-bit, prefetchable) Memory at e4000000 (32-bit, non-prefetchable) Memory at e5000000 (32-bit, non-prefetchable) Capabilities: <available only to root> ... and here is the OOPS which was captured in single user mode, if I do the same in multi user mode the problems occurs in the sound driver, which seems to be very odd: Unable to handle kernel NULL pointer dereference at virtual address 00000000 d08b3669 *pde = 00000000 Oops: 0002 CPU: 0 EIP: 0010:[<d08b3669>] Using defaults from ksymoops -t elf32-i386 -a i386 EFLAGS: 00010046 eax: 00000000 ebx: c149a244 ecx: c149d980 edx: c149a220 esi: c149a240 edi: c149d940 ebp: d08c0090 esp: cfb2fd58 ds: 0018 es: 0018 ss: 0018 Process modprobe (pid: 52, stackpage=cfb2f000) Stack: cff24ec0 d08c0000 00000000 00000001 00000246 c149d980 0000ffc0 00000002 d08b2715 d08c0000 d08c0000 d08bc1c0 d08b091d d08c0000 cfa98014 d08b79df d08c0000 00000001 00000001 d08b9f00 00000000 c149a200 04000001 00000009 Call Trace: [<d08c0000>] [<d08b2715>] [<d08c0000>] [<d08c0000>] [<d08bc1c0>] [<d08b091d>] [<d08c0000>] [<d08b79df>] [<d08c0000>] [<d08b9f00>] [<d08c0000>] [<c0109f65>] [<d08bc1c0>] [<c010a0d6>] [<c0108e30>] [<c011871e>] [<c010a109>] [<c0108e30>] [<c0114f86>] [<d08bc180>] [<d08bc374>] [<d08b2281>] [<d08b4180>] [<d08bb42c>] [<d08bc180>] [<d08b9c34>] [<d08bc360>] [<d08b23bf>] [<d08bc180>] [<d08b4280>] [<d08bb42c>] [<d08bc180>] [<d08b6000>] [<d08b9c50>] [<d08bc180>] [<c0115c70>] [<d08b0000>] [<d08b0000>] [<d08bc360>] [<d08b0000>] [<d08b6060>] [<c0108d73>] Code: 89 18 ff 74 24 10 9d 57 e8 72 d3 ff ff 83 c4 04 85 c0 75 2e >>EIP; d08b3669 <_end+10591855/1070c24c> <===== Trace; d08c0000 <_end+1059e1ec/1070c24c> Trace; d08b2715 <_end+10590901/1070c24c> Trace; d08c0000 <_end+1059e1ec/1070c24c> Trace; d08c0000 <_end+1059e1ec/1070c24c> Trace; d08bc1c0 <_end+1059a3ac/1070c24c> Trace; d08b091d <_end+1058eb09/1070c24c> Trace; d08c0000 <_end+1059e1ec/1070c24c> Trace; d08b79df <_end+10595bcb/1070c24c> Trace; d08c0000 <_end+1059e1ec/1070c24c> Trace; d08b9f00 <_end+105980ec/1070c24c> Trace; d08c0000 <_end+1059e1ec/1070c24c> Trace; c0109f65 <handle_IRQ_event+31/5c> Trace; d08bc1c0 <_end+1059a3ac/1070c24c> Trace; c010a0d6 <do_IRQ+6e/b4> Trace; c0108e30 <ret_from_intr+0/20> Trace; c011871e <do_softirq+3e/6c> Trace; c010a109 <do_IRQ+a1/b4> Trace; c0108e30 <ret_from_intr+0/20> Trace; c0114f86 <printk+172/194> Trace; d08bc180 <_end+1059a36c/1070c24c> Trace; d08bc374 <_end+1059a560/1070c24c> Trace; d08b2281 <_end+1059046d/1070c24c> Trace; d08b4180 <_end+1059236c/1070c24c> Trace; d08bb42c <_end+10599618/1070c24c> Trace; d08bc180 <_end+1059a36c/1070c24c> Trace; d08b9c34 <_end+10597e20/1070c24c> Trace; d08bc360 <_end+1059a54c/1070c24c> Trace; d08b23bf <_end+105905ab/1070c24c> Trace; d08bc180 <_end+1059a36c/1070c24c> Trace; d08b4280 <_end+1059246c/1070c24c> Trace; d08bb42c <_end+10599618/1070c24c> Trace; d08bc180 <_end+1059a36c/1070c24c> Trace; d08b6000 <_end+105941ec/1070c24c> Trace; d08b9c50 <_end+10597e3c/1070c24c> Trace; d08bc180 <_end+1059a36c/1070c24c> Trace; c0115c70 <sys_init_module+580/620> Trace; d08b0000 <_end+1058e1ec/1070c24c> Trace; d08b0000 <_end+1058e1ec/1070c24c> Trace; d08bc360 <_end+1059a54c/1070c24c> Trace; d08b0000 <_end+1058e1ec/1070c24c> Trace; d08b6060 <_end+1059424c/1070c24c> Trace; c0108d73 <system_call+33/40> Code; d08b3669 <_end+10591855/1070c24c> 00000000 <_EIP>: Code; d08b3669 <_end+10591855/1070c24c> <===== 0: 89 18 mov %ebx,(%eax) <===== Code; d08b366b <_end+10591857/1070c24c> 2: ff 74 24 10 pushl 0x10(%esp,1) Code; d08b366f <_end+1059185b/1070c24c> 6: 9d popf Code; d08b3670 <_end+1059185c/1070c24c> 7: 57 push %edi Code; d08b3671 <_end+1059185d/1070c24c> 8: e8 72 d3 ff ff call ffffd37f <_EIP+0xffffd37f> d08b09e8 <_end+1058ebd4/1070c24c> Code; d08b3676 <_end+10591862/1070c24c> d: 83 c4 04 add $0x4,%esp Code; d08b3679 <_end+10591865/1070c24c> 10: 85 c0 test %eax,%eax Code; d08b367b <_end+10591867/1070c24c> 12: 75 2e jne 42 <_EIP+0x42> d08b36ab <_end+10591897/1070c24c> Kernel panic: Aiee, killing interrupt handler! The machine has an AOPEN AX59 motherboard with the latest BIOS updates, just to rule out a problem with the newest BIOS I flashed the system with a BIOS version that is about 1 1/2 years old. Have a great new year, Karl Heinz - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/