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Subject2.3.40 blows away on shm swap test
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Hi,

I did my regular bug hunting/testing on 2.3.40. It fails very fast. I
am pretty sure that it does _not_ try to swap in this stage:

Unable to handle kernel NULL pointer dereference at virtual address 0000000c
printing eip:
c0114d64
*pde = 3785e001
*pte = 00000000
Oops: 0000
CPU: 4
EIP: 0010:[<c0114d64>]
EFLAGS: 00010086
eax: 00000030 ebx: 000000b0 ecx: c3ff6000 edx: 00000000
esi: c3ff6000 edi: cdce5900 ebp: c3ff7fac esp: c3ff7f00
ds: 0018 es: 0018 ss: 0018
Process swapper (pid: 0, stackpage=c3ff7000)
Stack: 00000001 c0115057 00000000 f7928200 c0222f8e f7928200 00000000 00000004
c3ff6000 cdce5900 c3ff7fac 00000010 00000018 f7890018 00000041 c011a0b5
00000010 00000202 c0109da0 c3ff6000 c0109da0 c3ff7f74 c02d2800 cdce5900
Call Trace: [<c0115057>] [<c0222f8e>] [<c011a0b5>] [<c0109da0>] [<c0109da0>] [<c
010f12c>] [<c0109da0>]
[<c0109da0>] [<c0109e10>] [<c011ed9d>]
Code: 8b 52 0c 81 c2 00 00 00 40 0f 22 e3 0f 22 da 0f 22 e0 83 79

>>EIP; c0114d64 <flush_tlb_all_ipi+18/58> <=====
Trace; c0115057 <smp_call_function_interrupt+1f/38>
Trace; c0222f8e <call_call_function_interrupt+5/b>
Trace; c011a0b5 <schedule+415/ab8>
Trace; c0109da0 <default_idle+0/28>
Trace; c0109da0 <default_idle+0/28>
Code; c0114d64 <flush_tlb_all_ipi+18/58>
00000000 <_EIP>:
Code; c0114d64 <flush_tlb_all_ipi+18/58> <=====
0: 8b 52 0c movl 0xc(%edx),%edx <=====
Code; c0114d67 <flush_tlb_all_ipi+1b/58>
3: 81 c2 00 00 00 40 addl $0x40000000,%edx
Code; c0114d6d <flush_tlb_all_ipi+21/58>
9: 0f 22 e3 movl %ebx,%cr4
Code; c0114d70 <flush_tlb_all_ipi+24/58>
c: 0f 22 da movl %edx,%cr3
Code; c0114d73 <flush_tlb_all_ipi+27/58>
f: 0f 22 e0 movl %eax,%cr4
Code; c0114d76 <flush_tlb_all_ipi+2a/58>
12: 83 79 00 00 cmpl $0x0,0x0(%ecx)

Kernel panic: Attempted to kill the idle task!

Greetings
Christoph

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