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List:       linux-aacraid-devel
Subject:    apparent driver problems.
From:       Darrell Fuhriman <darrell () grumblesmurf ! net>
Date:       2001-08-29 13:03:00
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Greetings.

I am currently running the aacraid driver, as included in kernel
from Redhat 7.1 and am having the following problem.

When running 2.4.2-2smp kernel, I get the following oops when we
try to reboot.  Most of the services are shut down, and it gets
to the point of 'disabling md devices'.  At this point the oops
is generated, then the machine hangs, and has to be physically
reset.  When running the newer 2.4.3-12smp kernel, we still get
the hang, but no oops.

The problem is infinitely repeatable.

Here's the output of ksymoops which makes me think the aacraid
driver is at fault.

Unable to handle kernel paging request at virtual address 6851ff31
 printing eip:
6851ff31
pgd entry f6b28684: 0000000000000000
pmd entry f6b28684: 0000000000000000
... pmd not present!
Oops: 0000
CPU:    4
EIP:    0010:[<6851ff31>]
EFLAGS: 00010282
eax: 00000000   ebx: f8822bc4   ecx: 000aac08   edx: 00000000
esi: 00000000   edi: 00000001   ebp: bffffca8   esp: f65e9e8c
ds: 0018   es: 0018   ss: 0018
Process reboot (pid: 7520, stackpage=f65e9000)
Stack: c0123175 f8822bc4 00000001 00000000 f65e8000 f65e8000 fee1dead c0123501
       c0325fc8 00000001 00000000 400fdef0 00000000 f46f13f4
       00000002 f493f540
       00001000 00000002 00000000 00000292 f65c9560 f493f540
       00000000 00000001
Call Trace: [<c0123175>] [<f8822bc4>] [<c0123501>] [<c01c3a7b>]
[<c0115c66>] [<c014fc20>] [<c0151066>]
       [<c014e8cb>] [<c013b0f4>] [<c0139f64>] [<c0139fcb>]
       [<c01091cb>]

Code:  Bad EIP value.

>>EIP; 6851ff31 Before first symbol   <=====
Trace; c0123175 <notifier_call_chain+25/50>
Trace; f8822bc4 <[aacraid].text.start+4b64/6bff>
Trace; c0123501 <sys_reboot+f1/290>
Trace; c01c3a7b <sk_free+6b/70>
Trace; c0115c66 <do_page_fault+166/460>
Trace; c014fc20 <destroy_inode+30/40>
Trace; c0151066 <iput_free+166/170>
Trace; c014e8cb <dput+3b/1a0>
Trace; c013b0f4 <fput+74/e0>
Trace; c0139f64 <filp_close+a4/b0>
Trace; c0139fcb <sys_close+5b/70>
Trace; c01091cb <system_call+33/38>


The machine is a 8-proc HP lxr 8500.

Here's the relevant bits from dmesg:

aacraid raid driver version, Jun  8 2001
hpnraid device detected
Device mapped to virtual address 0xf882a000
hpnraid:0 device initialization successful
hpnraid:0 AacHba_ClassDriverInit complete
hpnraid device detected
Device mapped to virtual address 0xf882d000
hpnraid:1 device initialization successful
hpnraid:1 AacHba_ClassDriverInit complete
scsi0 : hpnraid
scsi1 : hpnraid
  Vendor: HP        Model: NetRAID-4M Strip  Rev: 0001
  Type:   Direct-Access                      ANSI SCSI revision: 02
  Vendor: HP        Model: NetRAID-4M Strip  Rev: 0001
  Type:   Direct-Access                      ANSI SCSI revision: 02
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
Attached scsi removable disk sdb at scsi1, channel 0, id 0, lun 0
SCSI device sda: 710891521 512-byte hdwr sectors (363976 MB)
sda: Write Protect is off
Partition check:
 sda: sda1 sda2 < sda5 sda6 sda7 >
SCSI device sdb: 710891521 512-byte hdwr sectors (363976 MB)
sdb: Write Protect is off
 sdb: sdb1 sdb2 sdb3

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