Re: Linux Kernel Crash Report; Memory Manager Bug

From: Bernd Markgraf (markgraf@prinz-atm.CS.Uni-Magdeburg.De)
Date: Wed Jun 14 2000 - 14:50:18 EST


hi,

> Relevant log entries (oops message):
>
> Jun 13 19:23:12 BluTie_linux kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000024 (error 40000000)
> Jun 13 19:23:12 BluTie_linux kernel: NIP: C0032E44 XER: 00000000 LR: C002459C REGS: c0b61df0 TRAP: 0300
> Jun 13 19:23:12 BluTie_linux kernel: MSR: 00009032 [EEIRDRME]
> Jun 13 19:23:12 BluTie_linux kernel: TASK = c0b60000[5] 'kswapd' mm->pgd c01b1000 Last syscall: -1
> Jun 13 19:23:12 BluTie_linux kernel: last math db0e2000
> Jun 13 19:23:12 BluTie_linux kernel: GPR00: C002459C C0B61EA0 C0B60000 C0A48C28 C0A48C40 C0A48C40 DB441B84 C0603000
> Jun 13 19:23:12 BluTie_linux kernel: GPR08: 00040000 00000004 0000D196 C01C0000 44824084 1001A1A4 00000000 00000000
> Jun 13 19:23:12 BluTie_linux kernel: GPR16: 00000000 00000000 20000002 00000000 0FFFF000 E0001FFE 00000000 00000000
> Jun 13 19:23:12 BluTie_linux kernel: GPR24: 00000000 C01D0000 C01D0000 C0A48C28 C01D0000 C01D0000 00000004 00000004
> Jun 13 19:23:12 BluTie_linux kernel: Call backtrace:
> Jun 13 19:23:12 BluTie_linux kernel: C0032ED8 C002459C C002AC24 C002AD30 C0009CF4
> Jun 13 19:23:12 BluTie_linux kernel: Kernel panic: kernel access of bad area pc c0032e44 lr c002459c address 24 tsk kswapd/5
i've seen something similar on an athlon in our lab.
2.3.99 fixed it...

  berny

--
Death is happy, death is cool       
Death can be a useful tool         
Use a gun or use a knife          
Death can really change your life    
_________________________________________________________________________
Bernd Markgraf		                  Otto-von-Guericke-Universitaet
markgraf@mail.cs.uni-magdeburg.de         Magdeburg
http://www.cs.uni-magdeburg.de/~markgraf  Germany

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