2.5-vanilla scribbles on memory on 8quad during boot

2.5-vanilla scribbles on memory on 8quad during boot

[Zwane Mwaikambo]

This is all averted by my 'purge panic in as assign_irq_vector' 
patch, as well as my not so invasive pernode idt/vector patch.

Total of 32 processors activated (31453.18 BogoMIPS).
ENABLING IO-APIC IRQs
 printing eip:
c010c954
*pde = 00000000
Oops: 0002
CPU:    0
EIP:    0060:[<c010c954>]    Not tainted
EFLAGS: 00010202
EIP is at set_intr_gate+0x14/0x30
eax: 00606f20   ebx: 07070707   ecx: 07070707   edx: c0138e00
esi: c0136f20   edi: 0000000c   ebp: 00000127   esp: c3c9ff40
ds: 007b   es: 007b   ss: 0068
Process swapper (pid: 1, threadinfo=c3c9e000 task=c3c9c040)
Stack: c037cd34 07070707 c0136f20 c3c9ff60 07070707 00000000 00000007 0000000c 
       0001a107 0f000000 000072ed 00000286 c03ee396 00000246 00000000 00eff800 
       00000010 00000000 c037d662 c02c6181 000072b4 00000296 c03ee3b9 00000246 
Call Trace:
 [<c0136f20>] sys_setregid16+0x0/0x30
 [<c0122f28>] printk+0x1d8/0x230
 [<c01050ec>] init+0x6c/0x220
 [<c0105080>] init+0x0/0x220
 [<c0108bb5>] kernel_thread_helper+0x5/0x10

Code: 89 04 cd 00 10 35 c0 89 14 cd 04 10 35 c0 c3 8d b6 00 00 00 
 <0>Kernel panic: Attempted to kill init!

-- 
function.linuxpower.ca

Re: 2.5-vanilla scribbles on memory on 8quad during boot

[William Lee Irwin III]

On Fri, Apr 04, 2003 at 02:26:18AM -0500, Zwane Mwaikambo wrote:
> This is all averted by my 'purge panic in as assign_irq_vector' 
> patch, as well as my not so invasive pernode idt/vector patch.
> Total of 32 processors activated (31453.18 BogoMIPS).
> ENABLING IO-APIC IRQs
>  printing eip:
> c010c954
> *pde = 00000000
> Oops: 0002
> CPU:    0
> EIP:    0060:[<c010c954>]    Not tainted
> EFLAGS: 00010202
> EIP is at set_intr_gate+0x14/0x30
> eax: 00606f20   ebx: 07070707   ecx: 07070707   edx: c0138e00
> esi: c0136f20   edi: 0000000c   ebp: 00000127   esp: c3c9ff40
> ds: 007b   es: 007b   ss: 0068

Hmm, this is ugly. As it would otherwise panic(), what workaround was
this done with?


-- wli

Re: 2.5-vanilla scribbles on memory on 8quad during boot

[Zwane Mwaikambo]

On Fri, 4 Apr 2003, William Lee Irwin III wrote:

> On Fri, Apr 04, 2003 at 02:26:18AM -0500, Zwane Mwaikambo wrote:
> > This is all averted by my 'purge panic in as assign_irq_vector' 
> > patch, as well as my not so invasive pernode idt/vector patch.
> > Total of 32 processors activated (31453.18 BogoMIPS).
> > ENABLING IO-APIC IRQs
> >  printing eip:
> > c010c954
> > *pde = 00000000
> > Oops: 0002
> > CPU:    0
> > EIP:    0060:[<c010c954>]    Not tainted
> > EFLAGS: 00010202
> > EIP is at set_intr_gate+0x14/0x30
> > eax: 00606f20   ebx: 07070707   ecx: 07070707   edx: c0138e00
> > esi: c0136f20   edi: 0000000c   ebp: 00000127   esp: c3c9ff40
> > ds: 007b   es: 007b   ss: 0068
> 
> Hmm, this is ugly. As it would otherwise panic(), what workaround was
> this done with?

This one was hit when an index into a NR_IRQS array went out of bounds due 
to the high irq count. I put in an 'if (irq > NR_IRQS) continue' in the 
workaround patch.

	Zwane
-- 
function.linuxpower.ca