Hello. Charles Krinke wrote:
> I have a PPC8241 which does an > Oops: Exception in kernel mode, sig: 4 [#1] > PREEMPT > NIP: 00000900 LR: C00E579C CTR: 00003A55 > When doing a 'tar -xvzf'. The NIP is pointing at the decrementer > interrupt, I believe. > As I understand the decrementer, this is basically the timer tick in the > ppc and goes off every n ms continuously. > A tar is going to be concerned with date/time stamps on files, so it has > some interaction with the clock algorithms. > It seems to me that the decrementer should be able to go off at any time > during kernel operation, so maybe the "Exception in kernel mode" is > pointing us in an unusual direction. Obviously, you've got an exception in the decrementer exception handler itself -- and this was something like program check exception, judging on the signal you've got (SIGILL). > So, with that said: > "What might be the causes of such an exception from the decrementer in a > 2.6.17.11 ppc8241 kernel?" > "Where should one concentrate ones efforts in figuring this out?" Hrm, looks like some CPU errata maybe... WBR, Sergei _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded