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Subject2.4.0test9-pre5+vmfixes-2.4.0-test9-A1, oops
I got the following oops, i can reproduce it:

my network:

laptop+modem ----- mybox

I switch on internet connection, surf a little(network traffic),

then i shut down the modem, and one minute later when a swap request

should be done, the oops occurs. My box is not heavily memory stressed

when the oops occurs. I can also reproduce it by leaving the X screensaver

running after 1 minute of inactivity.

the oops:

ksymoops 2.3.4 on i686 2.4.0-test9. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.0-test9/ (default)
-m /boot/System.map (specified)

invalid operand: 0000
CPU: 0
EIP: 0010:[<c0132425>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00210082
eax: 0000001c ebx: c482f980 ecx: 00200002 edx: 02000000
esi: c1285a80 edi: 00000002 ebp: 00000001 esp: c0235ee0
ds: 0018 es: 0018 ss: 0018
Process swapper (pid: 0, stackpage=c0235000)
Stack: c01ef045 c01ef37a 000002da c0161e81 c482f980 00000001 c1285a80
00200046
c12bae60 c029a920 c018315a c1285a80 00000001 c029aa44 00000000
c1285a80
c029a960 c018a114 00000001 c12bae60 c029a960 c12bae60 00200282
c0184a43
Call Trace: [<c01ef045>] [<c01ef37a>] [<c0161e81>] [<c018315a>] [<c018a114>]
[<c0184a43>] [<c018a0b0>]
[<c010be51>] [<c010c036>] [<c0108960>] [<c0108960>] [<c010a7b8>]
[<c0108960>] [<c0108960>] [<c0100018>]
[<c010898d>] [<c01089f2>] [<c0105000>] [<c01001d0>]
Code: 0f 0b 83 c4 0c c3 90 57 56 53 8b 74 24 10 8b 54 24 14 85 d2

>>EIP; c0132425 <end_buffer_io_bad+45/4c> <=====
Trace; c01ef045 <tvecs+36fd/b8b8>
Trace; c01ef37a <tvecs+3a32/b8b8>
Trace; c0161e81 <end_that_request_first+61/b8>
Trace; c018315a <ide_end_request+32/84>
Trace; c018a114 <ide_dma_intr+64/9c>
Trace; c0184a43 <ide_intr+12f/198>
Trace; c018a0b0 <ide_dma_intr+0/9c>
Trace; c010be51 <handle_IRQ_event+4d/78>
Trace; c010c036 <do_IRQ+a6/f4>
Trace; c0108960 <default_idle+0/34>
Trace; c0108960 <default_idle+0/34>
Trace; c010a7b8 <ret_from_intr+0/20>
Trace; c0108960 <default_idle+0/34>
Trace; c0108960 <default_idle+0/34>
Trace; c0100018 <startup_32+18/cc>
Trace; c010898d <default_idle+2d/34>
Trace; c01089f2 <cpu_idle+3e/54>
Trace; c0105000 <empty_bad_page+0/1000>
Trace; c01001d0 <L6+0/2>
Code; c0132425 <end_buffer_io_bad+45/4c>
00000000 <_EIP>:
Code; c0132425 <end_buffer_io_bad+45/4c> <=====
0: 0f 0b ud2a <=====
Code; c0132427 <end_buffer_io_bad+47/4c>
2: 83 c4 0c add $0xc,%esp
Code; c013242a <end_buffer_io_bad+4a/4c>
5: c3 ret
Code; c013242b <end_buffer_io_bad+4b/4c>
6: 90 nop
Code; c013242c <end_buffer_io_async+0/d8>
7: 57 push %edi
Code; c013242d <end_buffer_io_async+1/d8>
8: 56 push %esi
Code; c013242e <end_buffer_io_async+2/d8>
9: 53 push %ebx
Code; c013242f <end_buffer_io_async+3/d8>
a: 8b 74 24 10 mov 0x10(%esp,1),%esi
Code; c0132433 <end_buffer_io_async+7/d8>
e: 8b 54 24 14 mov 0x14(%esp,1),%edx
Code; c0132437 <end_buffer_io_async+b/d8>
12: 85 d2 test %edx,%edx

Aiee, killing interrupt handler
Kernel panic: Attempted to kill the idle task!

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