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SubjectOops with 1.3.79 and kerneld
Date
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Hiho

Today I had an Oops after running scsi-config.

Here comes the start of the oops:
Mar 27 12:00:25 gandalf insmod: Initialization of st failed
Mar 27 12:00:25 gandalf kernel: Detected scsi tape st0 at scsi0, channel 0, id 3, lun 0
Mar 27 12:00:25 gandalf kernel: st: Can't allocate new tape buffer (nbr 0).

This should be fixed before 2.0 (lack of dma memory), but thats another
story.

Mar 27 12:00:25 gandalf kernel: Can't continue without at least one tape buffer.
Mar 27 12:01:25 gandalf kernel: Unable to handle kernel paging request at virtual address c1866ce0

It seemed to happen when kerneld tried to unload sr_mod (I don't even have a
scsi cdrom but it got loaded somehow, it seems that kerneld tried to load
all?! scsi modules when starting scsi-config).

The output of ksymoops should be useful:
/usr/src/linux/scripts/ksymoops /usr/src/linux/System.map < oops
Using /usr/src/linux/System.map' to map addresses to symbols.

Trace: 181532a
Trace: 18614a0
Trace: 185fd40
Trace: 18614a0
Trace: 115612 <sys_delete_module+f2/110>
Trace: 110813 <do_page_fault+193/300>
Trace: 110813 <do_page_fault+193/300>
Trace: 10a98b <error_code+4b/60>
Trace: 10a7d9 <system_call+59/a0>

Code: movl (%edx),%eax
Code: cmpl %edi,%eax
Code: jne fffffffe <gcc2_compiled.+fffffffe>
Code: testl %edx,%edx
Code: jne 0000001a <_EIP+1a>
Code: movl (%edi),%eax
Code: movl %eax,0x1819e00
Code: jmp 0000001e <_EIP+1e>
Code: nop

My setup is:
-1.3.79 Kernel
-modules-1.3.57
-ncr 53c810 with:
conner cfp1060S scsi harddisc
hp c1533A DAT tape
The rest should not matter.

Matthias

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