Hi there,

starting from 2.6.10 our 32-bit Kernel refuses too boot our Dual Opteron
Machines. 2.6.9 worked fine though.

Here is the oops I get (vanilla Kernel, .config attached).

--cut--
ksymoops 2.4.3 on i686 2.6.11-rc1.  Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.6.11-rc1/ (default)
     -m /boot/System.map-2.6.11-rc1 (default)

Warning: You did not tell me where to find symbol information.  I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc.  ksymoops -h explains the options.

Error (regular_file): read_ksyms stat /proc/ksyms failed
No modules in ksyms, skipping objects
No ksyms, skipping lsmod
CPU:    1         
EIP:    0060:[<c010ca4c>]    Not tainted VLI
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010006   (2.6.11-rc1)             
eax: 1e1e1e1e   ebx: 00000008   ecx: 00000250   edx: 1e1e1e1e
esi: 06060606   edi: c04ca344   ebp: 00000000   esp: dff33f14
ds: 007b   es: 007b   ss: 0068                               
Stack: 06060606 00000008 00000000 00000c00 00000000 c010cbb2 c04ca344 dfffb470 
       00000086 00000082 00000020 c010cce3 00000c00 00000000 dff31f6c 00000082 
       c010b62c c0468248 0000000a 00000046 dff32000 00000000 dff32000 c0110bdd 
Call Trace:                                                                    
 [<c010cbb2>] set_mtrr_state+0x22/0x90
 [<c010cce3>] generic_set_all+0x23/0x50
 [<c010b62c>] ipi_handler+0x7c/0x80    
 [<c0110bdd>] smp_call_function_interrupt+0x3d/0x60
 [<c0103290>] call_function_interrupt+0x1c/0x24    
 [<c01006d3>] default_idle+0x23/0x30           
 [<c010077f>] cpu_idle+0x5f/0x70    
Code: b9 50 02 00 00 31 ed 57 56 53 83 ec 04 8b 7c 24 18 0f 32 89 04 24 89 d6 8b 07 3b 04 24 0f 84 80 00 00 00 8b 57 04 b9 

>>EIP; c010ca4c <set_fixed_ranges+2c/c0>   <=====
Trace; c010cbb2 <set_mtrr_state+22/90>
Trace; c010cce2 <generic_set_all+22/50>
Trace; c010b62c <ipi_handler+7c/80>
Trace; c0110bdc <smp_call_function_interrupt+3c/60>
Trace; c0103290 <call_function_interrupt+1c/24>
Trace; c01006d2 <default_idle+22/30>
Trace; c010077e <cpu_idle+5e/70>
Code;  c010ca4c <set_fixed_ranges+2c/c0>
00000000 <_EIP>:
Code;  c010ca4c <set_fixed_ranges+2c/c0>   <=====
   0:   b9 50 02 00 00            mov    $0x250,%ecx   <=====
Code;  c010ca50 <set_fixed_ranges+30/c0>
   5:   31 ed                     xor    %ebp,%ebp
Code;  c010ca52 <set_fixed_ranges+32/c0>
   7:   57                        push   %edi
Code;  c010ca54 <set_fixed_ranges+34/c0>
   8:   56                        push   %esi
Code;  c010ca54 <set_fixed_ranges+34/c0>
   9:   53                        push   %ebx
Code;  c010ca56 <set_fixed_ranges+36/c0>
   a:   83 ec 04                  sub    $0x4,%esp
Code;  c010ca58 <set_fixed_ranges+38/c0>
   d:   8b 7c 24 18               mov    0x18(%esp),%edi
Code;  c010ca5c <set_fixed_ranges+3c/c0>
  11:   0f 32                     rdmsr  
Code;  c010ca5e <set_fixed_ranges+3e/c0>
  13:   89 04 24                  mov    %eax,(%esp)
Code;  c010ca62 <set_fixed_ranges+42/c0>
  16:   89 d6                     mov    %edx,%esi
Code;  c010ca64 <set_fixed_ranges+44/c0>
  18:   8b 07                     mov    (%edi),%eax
Code;  c010ca66 <set_fixed_ranges+46/c0>
  1a:   3b 04 24                  cmp    (%esp),%eax
Code;  c010ca68 <set_fixed_ranges+48/c0>
  1d:   0f 84 80 00 00 00         je     a3 <_EIP+0xa3>
Code;  c010ca6e <set_fixed_ranges+4e/c0>
  23:   8b 57 04                  mov    0x4(%edi),%edx
Code;  c010ca72 <set_fixed_ranges+52/c0>
  26:   b9 00 00 00 00            mov    $0x0,%ecx

 <0>Kernel panic - not syncing: Fatal exception in interrupt                                            

1 warning and 1 error issued.  Results may not be reliable.
--cut--



Sven


-- 
C is quirky, flawed, and an enormous success
(Dennis M. Ritchie)

/me is giggls@ircnet, http://sven.gegg.us/ on the Web