Exception in kernel mode

Charles Krinke ckrinke at istor.com
Fri Mar 16 06:56:19 EST 2007




Can you post the oops that you are seeing, what you need to find out  
is what instruction image that is causing the illegal instruction  
exception.  Once you have that it will be easier to figure out what's  
going on.

- k

Dear Kumar:

Here is the Oops, and thank you for looking at this. Things have come to
a halt here until I can figure this one out as about 6 engineers are
going "We cannot use an unreliable 2.6 kernel, fix it immediately, Mr.
Kernel Guy".

 Basically, what was happening was a 'tar -xvzf' was underway whose
source was an nfs mount (root = /dev/nfs) and whose destination was
formatted NAND flash (flash_eraseall -q -j /dev/mtd3, then mounted with
'mount -t jffs2 /dev/mtdblockx /mnt/mtdblockx').

Since I sent the last exchange, I see in the kernel source something
about ALTIVEC??. It isnt possible that ALTIVEC needs to be defined for
the 8241 is it?

Charles

rootfs/sbin/fsck.ext3
Oops: Exception in kernel mode, sig: 4 [#1]
PREEMPT
NIP: 00000900 LR: C00E579C CTR: 00003A55
REGS: c37f3b00 TRAP: 0700   Not tainted  (2.6.17.11)
MSR: 00081000 <ME>  CR: 24022484  XER: 00000000
TASK = c3eaf810[940] 'tar' THREAD: c37f2000
GPR00: 00003FFF C37F3BB0 C3EAF810 C40216BC 00000000 0000FFFE C4022D64
00008000
GPR08: C4000A74 C40316BC C4000980 C40216BC C4000000 10045C90 C37F3CE0
C01D3B68
GPR16: C3ECC5A0 C37F3C50 00002200 00000000 C2A9E000 C2000000 00000000
00001000
GPR24: 00000000 00000000 C01D0000 C2000000 C37F3C58 00000002 00000000
C4000000
Call Trace:
[C37F3BB0] [C00E5764]  (unreliable)
[C37F3BD0] [C00C93C4]
[C37F3BF0] [C00B988C]
[C37F3C40] [C00C0644]
[C37F3C90] [C00BBA94]
[C37F3CD0] [C003B8A8]
[C37F3D90] [C003C270]
[C37F3E20] [C003C320]
[C37F3EC0] [C003C470]
[C37F3EF0] [C0055F80]
[C37F3F10] [C00560C0]
[C37F3F40] [C00041A0]
Instruction dump:
XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX



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