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SubjectRe: ATAPI + cdwriter problem
Date
Hi

just while ATAPI + ide-scsi and cd drive are on topic here
might i also add that this bug has always been very easy for me to trigger
in
the 2.4.x series i have never been able todo it in 2.2.x though.

its very easy as in insert slightly scratched cd and do
dd if=/dev/scd1 of=/dev/null bs=8192k
wait until it gets to damage part of the disk and then the following
arrives.

i belive i have read some posts that this has been seem from other people
with
bad media in dvd drives as well.

ksymoops 2.4.1 on i586 2.4.19-rc1. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.19-rc1/ (default)
-m BEAST-2.4.19-rc1/System.map (specified)

No modules in ksyms, skipping objects
Warning (read_lsmod): no symbols in lsmod, is /proc/modules a valid lsmod
file?
beast login: Unable to handle kernel NULL pointer dereference at virtual
addres8
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c01e5783>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010202
eax: 00000000 ebx: c7a71000 ecx: c0327104 edx: 00000000
esi: 00000001 edi: c13a4fc0 ebp: cb23df58 esp: cb23df44
ds: 0018 es: 0018 ss: 0018
Process klogd (pid: 381, stackpage=cb23d000)
Stack: 00000000 c0327294 c13de260 c0327294 00000202 cb23df78 c01cdd11
c0327294
c01e5700 c0327104 c121db00 04000001 0000000f cb23df98 c010a0bd
0000000f
c13de260 cb23dfc4 cb23dfc4 0000000f c02f8ae0 cb23dfbc c010a24d
0000000f
Call Trace: [<c01cdd11>] [<c01e5700>] [<c010a0bd>] [<c010a24d>] [<c010c358>]
Code: 8b 72 18 46 89 72 18 8b 55 f0 8b 82 f0 00 00 00 8b 58 04 53

>>EIP; c01e5783 <idescsi_pc_intr+83/290> <=====
Trace; c01cdd11 <ide_intr+c1/120>
Trace; c01e5700 <idescsi_pc_intr+0/290>
Trace; c010a0bd <handle_IRQ_event+3d/70>
Trace; c010a24d <do_IRQ+7d/c0>
Trace; c010c358 <call_do_IRQ+5/d>
Code; c01e5783 <idescsi_pc_intr+83/290>
00000000 <_EIP>:
Code; c01e5783 <idescsi_pc_intr+83/290> <=====
0: 8b 72 18 mov 0x18(%edx),%esi <=====
Code; c01e5786 <idescsi_pc_intr+86/290>
3: 46 inc %esi
Code; c01e5787 <idescsi_pc_intr+87/290>
4: 89 72 18 mov %esi,0x18(%edx)
Code; c01e578a <idescsi_pc_intr+8a/290>
7: 8b 55 f0 mov 0xfffffff0(%ebp),%edx
Code; c01e578d <idescsi_pc_intr+8d/290>
a: 8b 82 f0 00 00 00 mov 0xf0(%edx),%eax
Code; c01e5793 <idescsi_pc_intr+93/290>
10: 8b 58 04 mov 0x4(%eax),%ebx
Code; c01e5796 <idescsi_pc_intr+96/290>
13: 53 push %ebx

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

1 warning issued. Results may not be reliable.



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