kernel BUG at buffer.c:765

kernel BUG at buffer.c:765

[John Summerfield]

[root@dugite /root]# sfdisk -l /dev/sda
ll_rw_block: device 08:00: only 2048-char blocks implemented (1024)
kernel BUG at buffer.c:765!
invalid operand: 0000
CPU:    0
EIP:    0010:[<c012f0cd>]
EFLAGS: 00010282
eax: 0000001c   ebx: c1b91ac8   ecx: c029ca68   edx: c029ca68
esi: 00000001   edi: 00000001   ebp: c1f55f2c   esp: c1f55ef0
ds: 0018   es: 0018   ss: 0018
Process sfdisk (pid: 1323, stackpage=c1f55000)
Stack: c024aba5 c024ae5a 000002fd c1b91a80 c017a4c4 c1b91a80 00000000 00000000
       bffffaa8 c1f55f78 c1215400 c012f663 00000000 00000001 c1f55f2c c1b91a80
       c01c8a68 00000800 00000000 00000400 00000000 bffffaa8 bffffaa8 00000800
Call Trace: [<c024aba5>] [<c024ae5a>] [<c017a4c4>] [<c012f663>] [<c01c8a68>] [<c01ce84e>] [<c01349b1>]
       [<c013ad96>] [<c010a933>]
Code: 0f 0b 83 c4 0c 5b c3 55 57 56 53 8b 74 24 14 8b 54 24 18 85
eth0: Abnormal interrupt, status 00000051.
eth0: Abnormal interrupt, status 00000010.
eth0: Abnormal interrupt, status 00000020.
Segmentation fault
[root@dugite /root]# uname -a
Linux dugite 2.4.0-test12 #11 Wed Dec 20 16:28:41 WST 2000 i586 unknown
[root@dugite /root]# 

lspci says:

00:0b.0 SCSI storage controller: Adaptec AHA-294x / AIC-7871 (rev 03)

relevant kernel boot-time messages

Dec 28 15:10:13 dugite kernel: PCI: Found IRQ 10 for device 00:0b.0
Dec 28 15:10:13 dugite kernel: (scsi0) <Adaptec AHA-294X SCSI host adapter> found at PCI 0/11/0
Dec 28 15:10:13 dugite kernel: (scsi0) Narrow Channel, SCSI ID=7, 16/255 SCBs
Dec 28 15:10:13 dugite kernel: (scsi0) Downloading sequencer code... 415 instructions downloaded
Dec 28 15:10:13 dugite kernel: scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.2.1/5.2.0
Dec 28 15:10:13 dugite kernel:        <Adaptec AHA-294X SCSI host adapter>
Dec 28 15:10:13 dugite kernel: (scsi0:0:0:0) Synchronous at 10.0 Mbyte/sec, offset 10.
Dec 28 15:10:13 dugite kernel:   Vendor: FUJITSU   Model: M2513A            Rev: 1200
Dec 28 15:10:13 dugite kernel:   Type:   Direct-Access                      ANSI SCSI revision: 01
Dec 28 15:10:13 dugite kernel: (scsi0:0:4:0) Synchronous at 5.0 Mbyte/sec, offset 15.
Dec 28 15:10:13 dugite kernel:   Vendor: CONNER    Model: CTT8000-S         Rev: 1.17
Dec 28 15:10:13 dugite kernel:   Type:   Sequential-Access                  ANSI SCSI revision: 02
Dec 28 15:10:13 dugite kernel: Detected scsi tape st0 at scsi0, channel 0, id 4, lun 0
Dec 28 15:10:13 dugite kernel: st: bufsize 32768, wrt 30720, max init. buffers 4, s/g segs 16.
Dec 28 15:10:13 dugite kernel: Detected scsi removable disk sda at scsi0, channel 0, id 0, lun 0
Dec 28 15:10:13 dugite kernel: SCSI device sda: 310352 2048-byte hdwr sectors (636 MB)
Dec 28 15:10:13 dugite kernel: sda: Write Protect is off
Dec 28 15:10:13 dugite kernel:  sda: sda1


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Re: kernel BUG at buffer.c:765

[Mike A. Harris]

On Fri, 29 Dec 2000, John Summerfield wrote:

>[root@dugite /root]# sfdisk -l /dev/sda
>ll_rw_block: device 08:00: only 2048-char blocks implemented (1024)
>kernel BUG at buffer.c:765!
>invalid operand: 0000
>CPU:    0
>EIP:    0010:[<c012f0cd>]
>EFLAGS: 00010282
>eax: 0000001c   ebx: c1b91ac8   ecx: c029ca68   edx: c029ca68
>esi: 00000001   edi: 00000001   ebp: c1f55f2c   esp: c1f55ef0
>ds: 0018   es: 0018   ss: 0018
>Process sfdisk (pid: 1323, stackpage=c1f55000)
>Stack: c024aba5 c024ae5a 000002fd c1b91a80 c017a4c4 c1b91a80 00000000 00000000
>       bffffaa8 c1f55f78 c1215400 c012f663 00000000 00000001 c1f55f2c c1b91a80
>       c01c8a68 00000800 00000000 00000400 00000000 bffffaa8 bffffaa8 00000800
>Call Trace: [<c024aba5>] [<c024ae5a>] [<c017a4c4>] [<c012f663>] [<c01c8a68>] [<c01ce84e>] [<c01349b1>]
>       [<c013ad96>] [<c010a933>]
>Code: 0f 0b 83 c4 0c 5b c3 55 57 56 53 8b 74 24 14 8b 54 24 18 85
>eth0: Abnormal interrupt, status 00000051.
>eth0: Abnormal interrupt, status 00000010.
>eth0: Abnormal interrupt, status 00000020.
>Segmentation fault
>[root@dugite /root]# uname -a
>Linux dugite 2.4.0-test12 #11 Wed Dec 20 16:28:41 WST 2000 i586 unknown
>[root@dugite /root]#
>

You'll need to run that through ksymoops first John, or else the
Oops report is not very useful since the kernel offsets are
different for every kernel compile.  If you put the System.map
file in /boot, you should end up with symbolic Oops information
in your /var/log/messages after a reboot.

Without that info, the above addresses effectively point to
nowhere.

Hope this helps.
Happy New Year!


----------------------------------------------------------------------
    Mike A. Harris  -  Linux advocate  -  Free Software advocate
          This message is copyright 2000, all rights reserved.
  Views expressed are my own, not necessarily shared by my employer.
----------------------------------------------------------------------

And 1.1.81 is officially BugFree(tm), so if you receive any bug-reports
on it, you know they are just evil lies.
  -- Linus Torvalds

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Re: kernel BUG at buffer.c:765

[Alan Cox]

> ll_rw_block: device 08:00: only 2048-char blocks implemented (1024)
> kernel BUG at buffer.c:765!
> invalid operand: 0000

Known problem. Its been there for a long time in 2.3.x. File system access
for FAT type files to the media is also still broken.

> Dec 28 15:10:13 dugite kernel: SCSI device sda: 310352 2048-byte hdwr sectors (636 MB)
> Dec 28 15:10:13 dugite kernel: sda: Write Protect is off
> Dec 28 15:10:13 dugite kernel:  sda: sda1

Same as mine.

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