Messages in this thread | | | Date | Mon, 5 May 1997 15:44:15 -0400 (EDT) | From | "Richard B. Johnson" <> | Subject | Re: NULL pointer dereference with pre 2.1.37-4 |
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On Sun, 4 May 1997, Thorsten Kukuk wrote:
> > Hello, > > With pre 2.1.37-3 and 2.1.37-4, I get the following Oops when > starting init: > > Unable to handle kernel NULL pointer dereference at virtual address 00000000 > current->tss.cr3 = 00101000,%cr3=00101000 > *pde=00000000 > Oops: 0002 > CPU: 0 > EIP: 0010:[<c01d8ef0>] > EFLAGS: 00010247 > eax: 00000000 ebx: 00004000 ecx: 00000000 edx: 00000001 > esi: c0107f60 edi: c01da4f2 ebp: c0005fdc esp: c0005fac > ds: 0018 es: 0018 ss: 0018 > Process swapper (pid:0, process nr:1, stackpage=c0097000) > Stack: 00001100 c0107f60 c01da4f2 00000001 c0107f60 00000001 00000000 00000005 > 00000018 00000018 ffffffff c0108440 00000e00 c0108519 00001100 c02137b0 > 00000000 c021380f 00000000 c02137a4 00000001 > Call Trace: > Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > ksymoops: > Using `/src/Linux/linux-2.1/System.map' to map addresses to symbols. > > >>EIP: c01d8ef0 <dst_access_fault+1a9/2c16> > > Code: c01d8ef0 <dst_access_fault+1a9/2c16> > > > I have a Tyan Tomcat III Board with 2 Pentium 133Mhz Processors. The kernel > is compiled with gcc 2.7.2.2. > > Thorsten > > -- > Thorsten Kukuk kukuk@vt.uni-paderborn.de > http://www-vt.uni-paderborn.de/~kukuk
You have the same fault I do with SMP enabled and 2 Pentium 166MHz processors. I also have the same board. I am using the aic7xxx SCSI driver. Basically, the first time a spinwait for IRQ completion occurs, the code executed is not as expected, i.e., zeros or whatever was in memory at the EIP: address.
You never got to execute init. I hope Linus is reading this stuff. Actually I hope he is fixing it!!
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