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SubjectRe: [PATCH] 2.4.20 IDE for 2.4.21-pre3
I get the following oops when running 2.4.21-pre3 + 
2.4.21-pre3-2420ide-1. The oops occurred after running the Cerberus
stress test for about 5 hours. The machine uses an ASUS A7N8X single
AMD Athlon XP motherboard with the Nvidia nforce2 chipset. I had to
pass ide0=ata66 ide1=ata66 to the kernel in order to use DMA.


ksymoops 2.4.4 on i686 2.4.21-1. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.21-1/ (default)
-m /boot/ (default)

Warning: You did not tell me where to find symbol information. I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc. ksymoops -h explains the options.

ide_dmaproc: chipset supported ide_dma_timeout func
hda: status error: status=0x58 {driveReady Seekcomplete DataRequeset}
hda: drive not ready for command

Unable to handle kernel NULL pointer dereference at virtual address 00000018
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c013cf60>] Not Tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010007
eax: 00000001 ebx: cd999d40 ecx: 00000000 edx: 00000000
esi: 00000002 edi: c11f3070 ebp: 00000001 esp: c1c1bedc
ds: 0018 es: 0018 ss: 0018
Stack: cd999d40 cff1d640 00000002 00000001 c0203d4c cd999d40 00000001
cff1d640 c1330d80 00000001 00000046 c020ed3f cff1d640 00000001 c03ac68c
0000007a cff1d640 00000001 ca657a00 c02205ef 00000001 c1330d80 c1c1bf3c
Call Trace: [<c0203d4c>] [<c020ed3f>] [<c02205ef>] [<c0122879>]
[<c0210a07>] [<c0220460>] [<c010a55c>] [<c010a773>]
Code: 8b 42 18 89 c1 83 e1 04 74 16 83 e0 40 74 17 c6 05 84 5e 2f

>>EIP; c013cf60 <end_buffer_io_async+60/c0> <=====
Trace; c0203d4c <end_that_request_first+5c/b0>
Trace; c020ed3f <ide_end_request+5f/b0>
Trace; c02205ef <read_intr+18f/1d0>
Trace; c0122879 <timer_bh+2a9/3f0>
Trace; c0210a07 <ide_intr+e7/160>
Trace; c0220460 <read_intr+0/1d0>
Trace; c010a55c <handle_IRQ_event+5c/90>
Trace; c010a773 <do_IRQ+a3/f0>
Code; c013cf60 <end_buffer_io_async+60/c0>
00000000 <_EIP>:
Code; c013cf60 <end_buffer_io_async+60/c0> <=====
0: 8b 42 18 mov 0x18(%edx),%eax <=====
Code; c013cf63 <end_buffer_io_async+63/c0>
3: 89 c1 mov %eax,%ecx
Code; c013cf65 <end_buffer_io_async+65/c0>
5: 83 e1 04 and $0x4,%ecx
Code; c013cf68 <end_buffer_io_async+68/c0>
8: 74 16 je 20 <_EIP+0x20> c013cf80
Code; c013cf6a <end_buffer_io_async+6a/c0>
a: 83 e0 40 and $0x40,%eax
Code; c013cf6d <end_buffer_io_async+6d/c0>
d: 74 17 je 26 <_EIP+0x26> c013cf86
Code; c013cf6f <end_buffer_io_async+6f/c0>
f: c6 05 84 5e 2f 00 00 movb $0x0,0x2f5e84

<0> Kernel panic: Aiee, killing interrupt handler!

1 warning issued. Results may not be reliable.

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