Oops in during system run

[Sreejith]

Hi all,
 
This is a peculiar Oops we are encountering during the running of our board
(sh4) architecture
we are some times getting Oops messages like this 
Unable to handle kernel NULL pointer dereference at virtual address 00000004

pc = 844240f8

*pde = 00000000

Oops: 0001 [#1]



Pid : 529, Comm:                  cvm

PC is at run_timer_softirq+0x58/0x220

PC  : 844240f8 SP  : 88d1ff44 SR  : 400080f0 TEA : c0169d64    Tainted: P

R0  : 00000000 R1  : 88d1ff44 R2  : 00000000 R3  : 846fa08c

R4  : 846fa084 R5  : 846fae8c R6  : 00000001 R7  : 00000000

R8  : 00000000 R9  : 846fa084 R10 : 84424020 R11 : 88d1ff0c

R12 : 88d1ff44 R13 : 846fba08 R14 : ffffffd3

MACH: 00000050 MACL: 00000078 GBR : 397b6938 PR  : 844241a2



Call trace:

[<8442137a>] __do_softirq+0x7a/0x120

[<844218a6>] irq_exit+0x66/0x80

[<84407e80>] do_IRQ+0x0/0x60

[<84407eb8>] do_IRQ+0x38/0x60

[<84405070>] ret_from_irq+0x0/0x10



Kernel panic - not syncing: Aiee, killing interrupt handler!
I think this crash is a generic problem in our kernel configuration. can any
one help?