isp1020 memory trample in 2.5.66

[Zwane Mwaikambo]

2.5.65 was ok, 2.5.66 can't boot, there is nothing obvious in the patch 
which could have led to this. I'd try a binary search but i'm afraid i 
won't have that much free time for a while.

Box is 32way PIII-450, devices attached to the only real active isp1020 
HBA are;

qlogicisp : new isp1020 revision ID (5)
qlogicisp : interrupt 233 already in use
scsi0 : QLogic ISP1020 SCSI on PCI bus 01 device 70 irq 41 MEM base 
0xf8c1a000
  Vendor: IBM       Model: DRHS36V           Rev: 0270
  Type:   Direct-Access                      ANSI SCSI revision: 03
  Vendor: IBM       Model: DRHS36V           Rev: 0270
  Type:   Direct-Access                      ANSI SCSI revision: 03
  Vendor: PLEXTOR   Model: CD-ROM PX-32CS    Rev: 1.02
  Type:   CD-ROM                             ANSI SCSI revision: 02
scsi1 : QLogic ISP1020 SCSI on PCI bus 04 device 70 irq 89 MEM base 0xf8c1c000
SCSI device sda: 72170879 512-byte hdwr sectors (36951 MB)
SCSI device sda: drive cache: write through
 sda: sda1 sda2 sda3
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
SCSI device sdb: 72170879 512-byte hdwr sectors (36951 MB)
SCSI device sdb: drive cache: write through
 sdb: unknown partition table

Unable to handle kernel paging request at virtual address 6b6b6b6b
 printing eip:
6b6b6b6b
*pde = 00000000
Oops: 0000 [#1]
CPU:    0
EIP:    0060:[<6b6b6b6b>]    Not tainted
EFLAGS: 00010086
EIP is at 0x6b6b6b6b
eax: f8c1c000   ebx: e4f9c000   ecx: 00000001   edx: c3f56400
esi: e4f9c000   edi: 00000002   ebp: e4fa09cc   esp: c0375f10
ds: 007b   es: 007b   ss: 0068
Process swapper (pid: 0, threadinfo=c0374000 task=c03064a0)
Stack: c0228d4b e4fa09cc 00000001 00000001 c3f564b0 c3f56400 0000000b c3f56400 
       00000002 c0375f98 c0228a39 0000000b c3f56400 c0375f98 e59f1914 24000001 
       0000000b c010cd4a 0000000b c3f56400 c0375f98 c0356960 c0356970 0000000b 
Call Trace:
 [<c0228d4b>] isp1020_intr_handler+0x2db/0x300
 [<c0228a39>] do_isp1020_intr_handler+0x49/0x80
 [<c010cd4a>] handle_IRQ_event+0x3a/0x60
 [<c010d052>] do_IRQ+0x112/0x1f0
 [<c01089b0>] default_idle+0x0/0x40
 [<c01089b0>] default_idle+0x0/0x40
 [<c010b700>] common_interrupt+0x18/0x20
 [<c01089b0>] default_idle+0x0/0x40
 [<c01089b0>] default_idle+0x0/0x40
 [<c01089dd>] default_idle+0x2d/0x40
 [<c0108a82>] cpu_idle+0x52/0x70
 [<c0105000>] _stext+0x0/0x70

Code:  Bad EIP value.
 <0>Kernel panic: Aiee, killing interrupt handler!

0xc0228d4b is in isp1020_intr_handler (drivers/scsi/qlogicisp.c:1072).
1071                    (*Cmnd->scsi_done)(Cmnd); <===
1072            }

-- 
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