kernel 2.4.17 crashes on SCSI-errors

Date: Thu Jan 03 2002 - 07:05:41 EST

Hi, List

right now I tried the new kernel 2.4.17, hoping, that
the SCSI-system is now useable again.
But NO! It immediately crashed, like the few kernels before.

In the meantime I'm really getting into problems with
our product, because I expect SuSE to launch their next
release soon with an instable "stable" kernel.

Isn't anybody recognizing, that this bug is serious?
3.5" MO-drives report blank sectors as "SCSI-Hardware-Error"
This kind of sense code also appears for errors, that
are much more common than blanked sectors.
Any flaw in SCSI-disks will crash the kernel.
Please don't rely on modern hardware to be so perfect, that
errors will never occure. Then you could likewise remove
the complete error-handling-code.
This would at least prevent the crashes...

Here is a simple procedure to reliably trigger the BUG:

1) I compiled the SCSI-stuff as modules.
2) I put an erased MO-Medium in a MO-SCSI-drive.
3) I connected the drive to the computer.
4) I typed "modprobe sd_mod"
5) Crash! Serial console said:

Welcome to SuSE Linux 7.3 (i386) - Kernel 2.4.17 (ttyS0).

tick login: invalid operand: 0000
CPU: 0
EIP: 0010:[<d0851735>] Not tainted
EFLAGS: 00010082
eax: 00000042 ebx: ce3dc070 ecx: c0224080 edx: 0000270d
esi: c009e018 edi: 00000018 ebp: c009e000 esp: c0237dd4
ds: 0018 es: 0018 ss: 0018
Process swapper (pid: 0, stackpage=c0237000)
Stack: d0867340 00000093 cf95b9ac cfb6de00 c0237e2c 00000000 66656400 00000006
       cfb6de10 00000002 00000003 00000282 41000031 c0220002 ce434a00 d0851346
       cfb6de00 ce468ecc 00000293 ce434ab8 ce434a00 cf4f416c 00000092 d083466a
Call Trace: [<d0867340>] [<d0851346>] [<d083466a>] [<d0834df8>] [<d083baaf>]
   [<d084e880>] [<d083b10e>] [<d083b2b3>] [<d083b318>] [<d083b7a0>] [<d084cce8>]
   [<d08351f7>] [<d0835099>] [<c01176a2>] [<c01175d9>] [<c01173ca>] [<c0107f8d>]
   [<c0105150>] [<c0105150>] [<c0105173>] [<c01051d7>] [<c0105000>] [<c0105027>]

Code: 0f 0b 83 c4 08 83 3e 00 74 13 8b 06 05 00 00 00 40 89 46 0c
 <0>Kernel panic: Aiee, killing interrupt handler!
In interrupt handler - not syncing

Again I offer my time and my hardware for testing purposes.
I cannot fix the bug in the kernel myself, but I can test patches
and provide resulting stack traces.


| Ralf Oehler
| GDI - Gesellschaft fuer Digitale Informationstechnik mbH
| E-Mail:
| Tel.: +49 6182-9271-23
| Fax.: +49 6182-25035
| Mail: GDI, Bensbruchstraße 11, D-63533 Mainhausen

time is a funny concept

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This archive was generated by hypermail 2b29 : Mon Jan 07 2002 - 21:00:21 EST