2.4.19rc2 XFS oops trace

["D. Stimits" <stimits@xxxxxxxxxx>]

The oops being reported was not fatal, the machine continued to run 
fine. The only reason I noticed it is because I run tail -f on 
/var/log/messages whenever the modem is up.

I do not know if this is related to XFS or not, perhaps someone could 
tell me if this needs to go elsewhere. The machine is SMP i840 chipset, 
the kernel is XFS cvs from a few weeks ago, 2.4.19 rc2. It uses aic7xxx 
module for scsi on its main drive (integrated U160 single channel 
controller on the motherboard), but also has IDE present (not mounted). 
I am in the process of building up on ext2 for transfer to XFS shortly. 
The current root partition is ext2, and one mounted partition is XFS, 
but was not being read at the time. Based on Redhat 7.3. One thing you 
will see in the trace that I found quite odd, it was looking for 
aic7xxx.o in /lib/. This is a module and it is present in the 
/lib/modules/`uname -r`/kernel/drivers/scsi/aic7xxx/ directory.

Inserted modules:
# lsmod
Module                  Size  Used by    Tainted: P
ppp_deflate            44064   1  (autoclean)
ppp_async               8352   1  (autoclean)
ppp_generic            23084   3  (autoclean) [ppp_deflate ppp_async]
slhc                    5884   1  (autoclean) [ppp_generic]
emu10k1                66400   0  (autoclean)
sound                  72620   0  (autoclean) [emu10k1]
ac97_codec             12224   0  (autoclean) [emu10k1]
soundcore               6596   7  (autoclean) [emu10k1 sound]
agpgart                22272   3  (autoclean)
NVdriver             1066080  10  (autoclean)
binfmt_misc             7524   1
parport_pc             25128   1  (autoclean)
lp                      7424   0  (autoclean)
parport                38720   1  (autoclean) [parport_pc lp]
ipchains               52552 103
md                     63776   0  (unused)
aic7xxx               146112   4

TRACE command (oops was saved to oops.txt):
 ksymoops -v \
    /boot/vmlinux-2.4.19-rc2-xfs-1 \
    -m /boot/System.map-2.4.19-rc2-xfs-1 oops.txt

TRACE output:
ksymoops 2.4.4 on i686 2.4.19-rc2-xfs-1.  Options used
     -v /boot/vmlinux-2.4.19-rc2-xfs-1 (specified)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.19-rc2-xfs-1/ (default)
     -m /boot/System.map-2.4.19-rc2-xfs-1 (specified)

Error (expand_objects): cannot stat(/lib/aic7xxx.o) for aic7xxx
ksymoops: No such file or directory
kernel: kernel BUG at page_alloc.c:91!
kernel: invalid operand: 0000
kernel: CPU:    1
kernel: EIP:    0010:[<c01338dd>]    Tainted: P
Using defaults from ksymoops -t elf32-i386 -a i386
kernel: EFLAGS: 00013282
kernel: eax: c115c074   ebx: c120c268   ecx: c120c268   edx: c03987dc
kernel: esi: c120c268   edi: 0000001e   ebp: 00000000   esp: cff2bf10
kernel: ds: 0018   es: 0018   ss: 0018
kernel: Process kswapd (pid: 5, stackpage=cff2b000)
kernel: Stack: 00000000 c120c268 0000001e 000001f7 c013e6a5 c120c268 
000001d0 0000001e
kernel:        000001f7 c013ca2a 00000000 c120c268 c01330c0 c0134158 
c0133109 00000020
kernel:        000001d0 00000020 00000006 c12cf440 cff2ec00 000013a3 
000001d0 c0398974
kernel: Call Trace: [<c013e6a5>] [<c013ca2a>] [<c01330c0>] [<c0134158>] 
[<c0133109>]
kernel:    [<c0133367>] [<c01333d1>] [<c013347f>] [<c01334ee>] 
[<c0133607>] [<c0105000>]
kernel:    [<c01072db>]
kernel: Code: 0f 0b 5b 00 42 06 2c c0 89 d8 2b 05 70 db 41 c0 69 c0 a3 8b

>>EIP; c01338dd <__free_pages_ok+2d/264>   <=====
Trace; c013e6a5 <try_to_free_buffers+c1/138>
Trace; c013ca2a <try_to_release_page+42/48>
Trace; c01330c0 <shrink_cache+228/38c>
Trace; c0134158 <__free_pages+1c/20>
Trace; c0133109 <shrink_cache+271/38c>
Trace; c0133367 <shrink_caches+5b/90>
Trace; c01333d1 <try_to_free_pages+35/54>
Trace; c013347f <kswapd_balance_pgdat+57/b0>
Trace; c01334ee <kswapd_balance+16/2c>
Trace; c0133607 <kswapd+a3/be>
Trace; c0105000 <_stext+0/0>
Trace; c01072db <kernel_thread+23/30>
Code;  c01338dd <__free_pages_ok+2d/264>
00000000 <_EIP>:
Code;  c01338dd <__free_pages_ok+2d/264>   <=====
   0:   0f 0b                     ud2a      <=====
Code;  c01338df <__free_pages_ok+2f/264>
   2:   5b                        pop    %ebx
Code;  c01338e0 <__free_pages_ok+30/264>
   3:   00 42 06                  add    %al,0x6(%edx)
Code;  c01338e3 <__free_pages_ok+33/264>
   6:   2c c0                     sub    $0xc0,%al
Code;  c01338e5 <__free_pages_ok+35/264>
   8:   89 d8                     mov    %ebx,%eax
Code;  c01338e7 <__free_pages_ok+37/264>
   a:   2b 05 70 db 41 c0         sub    0xc041db70,%eax
Code;  c01338ed <__free_pages_ok+3d/264>
  10:   69 c0 a3 8b 00 00         imul   $0x8ba3,%eax,%eax


1 error issued.  Results may not be reliable.

D. Stimits, stimits @ idcomm.com