[Bug 17636] New: Kernel oops with amd64-smp kernel.

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http://bugzilla.ubuntu.com/show_bug.cgi?id=17636
Ubuntu | kernel-package

           Summary: Kernel oops with amd64-smp kernel.
           Product: Ubuntu
           Version: unspecified
          Platform: amd64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: kernel-package
        AssignedTo: ben.collins at ubuntu.com
        ReportedBy: jesper at krogh.cc
         QAContact: kernel-bugs at lists.ubuntu.com


Booting 'Ubuntu, kernel 2.6.12-9-amd64-k8-smp Default '                       
                                                                                
root  (hd0,0)                                                                   
 Filesystem type is ext2fs, partition type 0x83                                 
kernel  /boot/vmlinuz root=/dev/sda1 ro console=ttyS0,9600 quiet splash         
   [Linux-bzImage, setup=0x1c00, size=0x15c51a]                                 
initrd  /boot/initrd.img                                                        
   [Linux-initrd @ 0x7f9d5000, 0x58ac4e bytes]                                  
savedefault                                                                     
boot                                                                            
Loading, please wait...                                                         
[   74.063019] ----------- [cut here ] --------- [please bite here ] ---------  
[   74.154489] Kernel BUG at "mm/mmap.c":1937                                   
[   74.208200] invalid operand: 0000 [1] SMP                                    
[   74.261910] CPU 0                                                            
[   74.288195] Modules linked in: vga16fb vgastate softcursor cfbimgblt
cfbfillrect cfbcopyarea fbcon tileblit font bitblit
[   74.431044] Pid: 910, comm: busybox Not tainted 2.6.12-9-amd64-k8-smp        
[   74.515609] RIP: 0010:[<ffffffff8016f431>] <ffffffff8016f431>{exit_mmap+385} 
[   74.605892] RSP: 0018:ffff81003f7a7ea8  EFLAGS: 00010202                     
[   74.677885] RAX: 0000000000000044 RBX: 0000000000000000 RCX: ffff81003fae1f28
[   74.771596] RDX: ffff81003f4b7450 RSI: ffff81003fae1eb8 RDI: ffff81004000a880
[   74.865303] RBP: 0000000000000000 R08: ffff81007f912ad8 R09: 0000000000000001
[   74.959012] R10: 00000000ffffffff R11: 0000000000000000 R12: ffff81003f5504c0

Complete dump fetched from serial console: http://krogh.cc/~jesper/report

single processor kernel works fine. 

Complete updated fresh "Breezy Badger" installation from today. 
ii  linux-image-am 2.6.12.16      Linux kernel image on AMD K8 SMP.

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