[Bug 612895] Re: Unable to handle kernel NULL pointer dereference at virtual address 00000000

Lee Jones lee.jones at canonical.com
Tue Aug 3 09:30:23 UTC 2010


Uncompressing Linux... done, booting the kernel.                                                                                         
Linux version 2.6.34-902-omap4 (buildd at satinash) (gcc version 4.4.5 20100720 (prerelease) (Ubuntu 4.4.4-7ubuntu2) ) #6-Ubuntu SMP PREEMP0
CPU: ARMv7 Processor [410fc091] revision 1 (ARMv7), cr=10c53c7f                                                                          
CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache                                                                     
Machine: OMAP4430 Panda Board                                                                                                            
Memory policy: ECC disabled, Data cache writealloc                                                                                       
OMAP4430 ES1.0                                                                                                                           
SRAM: Mapped pa 0x40300000 to va 0xfe400000 size: 0x100000                                                                               
Reserving 33554432 bytes SDRAM for VRAM                                                                                                  
PERCPU: Embedded 8 pages/cpu @c3b74000 s9088 r8192 d15488 u65536                                                                         
pcpu-alloc: s9088 r8192 d15488 u65536 alloc=16*4096                                                                                      
pcpu-alloc: [0] 0 [0] 1                                                                                                                  
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 117602                                                              
Kernel command line: vram=32M mem=463M console=ttyO2,115200n8 console=tty2 root=/dev/mmcblk0p2 fixrtc                                    
PID hash table entries: 2048 (order: 1, 8192 bytes)                                                                                      
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)                                                                          
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)                                                                           
BUG: Bad page state in process swapper  pfn:94126                                                                                        
page:c0a114c0 count:0 mapcount:-897 mapping:(null) index:0x0                                                                             
page flags: 0x0()                                                                                                                        
[<c0043684>] (unwind_backtrace+0x0/0xe4) from [<c00ccca8>] (bad_page+0xc4/0xf0)                                                          
[<c00ccca8>] (bad_page+0xc4/0xf0) from [<c00cde18>] (__free_pages_ok+0xe4/0x1e8)                                                         
[<c00cde18>] (__free_pages_ok+0xe4/0x1e8) from [<c00161c0>] (free_all_bootmem_core+0xf0/0x208)                                           
[<c00161c0>] (free_all_bootmem_core+0xf0/0x208) from [<c000cce0>] (mem_init+0x40/0x310)                                                  
[<c000cce0>] (mem_init+0x40/0x310) from [<c000856c>] (mm_init+0x8/0x14)                                                                  
[<c000856c>] (mm_init+0x8/0x14) from [<c0008a98>] (start_kernel+0xb0/0x258)                                                              
[<c0008a98>] (start_kernel+0xb0/0x258) from [<80008080>] (0x80008080)                                                                    
Disabling lock debugging due to kernel taint                                                                                             
Memory: 463MB = 463MB total                                                                                                              
Memory: 423732k/423860k available, 50252k reserved, 0K highmem                                                                           
Virtual kernel memory layout:                                                                                                            
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)                                                                                        
    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)                                                                                        
    DMA     : 0xffc00000 - 0xffe00000   (   2 MB)                                                                                        
    vmalloc : 0xdd000000 - 0xf8000000   ( 432 MB)                                                                                        
    lowmem  : 0xc0000000 - 0xdcf00000   ( 463 MB)                                                                                        
    modules : 0xbf000000 - 0xc0000000   (  16 MB)                                                                                        
      .init : 0xc0008000 - 0xc003c000   ( 208 kB)                                                                                        
      .text : 0xc003c000 - 0xc066b000   (6332 kB)                                                                                        
      .data : 0xc06a0000 - 0xc070eb20   ( 443 kB)                                                                                        
SLUB: Genslabs=11, HWalign=32, Order=0-3, MinObjects=0, CPUs=2, Nodes=1                                                                  
Hierarchical RCU implementation.                                                                                                         
NR_IRQS:402                                                                                                                              
omap_hwmod: l3_main_2: cannot clk_get interface_clk fdif_ck                                                                              
omap_hwmod: kbd: cannot clk_get main_clk kbd_fck                                                                                         
omap_hwmod: mcpdm: cannot clk_get main_clk mcpdm_fck                                                                                     
GPMC revision 6.0                                                                                                                        
OMAP clockevent source: GPTIMER1 at 32768 Hz                                                                                             
Console: colour dummy device 80x30                                                                                                       
console [tty2] enabled                                                                                                                   
Calibrating delay loop... 1195.29 BogoMIPS (lpj=4669440)                                                                                 
Security Framework initialized                                                                                                           
AppArmor: AppArmor initialized                                                                                                           
Mount-cache hash table entries: 512                                                                                                      
CPU: Testing write buffer coherency: ok                                                                                                  
PL310/L2C-310 cache controller enabled                                                                                                   
CPU1: Booted secondary processor                                                                                                         
Brought up 2 CPUs                                                                                                                        
SMP: Total of 2 processors activated (2395.78 BogoMIPS).                                                                                 
devtmpfs: initialized                                                                                                                    
regulator: core version 0.5                                                                                                              
NET: Registered protocol family 16                                                                                                       
OMAP GPIO hardware version 0.1                                                                                                           
OMAP DMA hardware revision 0.0                                                                                                           
bio: create slab <bio-0> at 0                                                                                                            
SCSI subsystem initialized                                                                                                               
usbcore: registered new interface driver usbfs                                                                                           
usbcore: registered new interface driver hub                                                                                             
usbcore: registered new device driver usb                                                                                                
i2c_omap i2c_omap.1: bus 1 rev4.0 at 400 kHz                                                                                             
Skipping twl internal clock init and using bootloader value (unknown osc rate)                                                           
twl6030: PIH (irq 39) chaining IRQs 368..387                                                                                             
regulator: VMMC: 1200 <--> 3000 mV at 3000 mV normal standby                                                                             
regulator: VPP: 1800 <--> 2500 mV at 1900 mV normal standby                                                                              
omap_device: i2c_omap.1: new worst case deactivate latency 0: 30517                                                                      
regulator: VUSIM: 1200 <--> 2900 mV at 1800 mV normal standby                                                                            
regulator: VANA: 2100 mV normal standby                                                                                                  
regulator: VCXIO: 1800 mV normal standby                                                                                                 
regulator: VDAC: 1800 mV normal standby                                                                                                  
regulator: VUSB: 3300 mV normal standby                                                                                                  
regulator: VAUX1_6030: 1000 <--> 3000 mV at 1800 mV normal standby                                                                       
regulator: VAUX2_6030: 1200 <--> 2800 mV at 1800 mV normal standby                                                                       
regulator: VAUX3_6030: 1000 <--> 3000 mV at 1200 mV normal standby                                                                       
Advanced Linux Sound Architecture Driver Version 1.0.22.1.                                                                               
NetLabel: Initializing                                                                                                                   
NetLabel:  domain hash size = 128                                                                                                        
NetLabel:  protocols = UNLABELED CIPSOv4                                                                                                 
NetLabel:  unlabeled traffic allowed by default                                                                                          
Switching to clocksource 32k_counter                                                                                                     
AppArmor: AppArmor Filesystem Enabled                                                                                                    
musb_hdrc: version 6.0, pio, host, debug=0                                                                                               
musb_hdrc musb_hdrc: MUSB HDRC host driver                                                                                               
musb_hdrc musb_hdrc: new USB bus registered, assigned bus number 1                                                                       
usb usb1: New USB device found, idVendor=1d6b, idProduct=0002                                                                            
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1                                                                       
usb usb1: Product: MUSB HDRC host driver                                                                                                 
usb usb1: Manufacturer: Linux 2.6.34-902-omap4 musb-hcd                                                                                  
usb usb1: SerialNumber: musb_hdrc                                                                                                        
hub 1-0:1.0: USB hub found                                                                                                               
hub 1-0:1.0: 1 port detected                                                                                                             
musb_hdrc musb_hdrc: USB Host mode controller at fc0ab000 using PIO, IRQ 124                                                             
NET: Registered protocol family 2                                                                                                        
IP route cache hash table entries: 4096 (order: 2, 16384 bytes)                                                                          
TCP established hash table entries: 16384 (order: 5, 131072 bytes)                                                                       
TCP bind hash table entries: 16384 (order: 5, 196608 bytes)                                                                              
TCP: Hash tables configured (established 16384 bind 16384)                                                                               
TCP reno registered                                                                                                                      
UDP hash table entries: 256 (order: 1, 8192 bytes)                                                                                       
UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)                                                                                  
NET: Registered protocol family 1                                                                                                        
RPC: Registered udp transport module.                                                                                                    
RPC: Registered tcp transport module.                                                                                                    
RPC: Registered tcp NFSv4.1 backchannel transport module.                                                                                
Trying to unpack rootfs image as initramfs...                                                                                            
Freeing initrd memory: 5564K                                                                                                             
omap4_syslink_init: Successfully registered devices                                                                                      
sdp4430_wifi_init: start                                                                                                                 
omap-iommu omap-iommu.0: ducati registered                                                                                               
audit: initializing netlink socket (disabled)                                                                                            
type=2000 audit(5.717:1): initialized                                                                                                    
usb 1-1: new high speed USB device using musb_hdrc and address 2                                                                         
VFS: Disk quotas dquot_6.5.2                                                                                                             
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)                                                                               
msgmni has been set to 838                                                                                                               
alg: No test for stdrng (krng)                                                                                                           
io scheduler noop registered                                                                                                             
io scheduler deadline registered                                                                                                         
io scheduler cfq registered (default)                                                                                                    
OMAP DSS rev 4.0                                                                                                                         
OMAP DISPC rev 4.0                                                                                                                       
OMAP DSI rev 3.0                                                                                                                         
OMAP DSI2 rev 3.0                                                                                                                        
OMAP HDMI W1 rev 1.0                                                                                                                     
usb 1-1: New USB device found, idVendor=0424, idProduct=9514                                                                             
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0                                                                        
hub 1-1:1.0: USB hub found                                                                                                               
hub 1-1:1.0: 5 ports detected                                                                                                            
omap-hsuart.0: ttyO0 at MMIO 0x4806a000 (irq = 104) is a OMAP UART0                                                                      
omap-hsuart.1: ttyO1 at MMIO 0x4806c000 (irq = 105) is a OMAP UART1                                                                      
omap-hsuart.2: ttyO2 at MMIO 0x48020000 (irq = 106) is a OMAP UART2                                                                      
usb 1-1.1: new high speed USB device using musb_hdrc and address 3                                                                       
usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00                                                                           
usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0                                                                      
usb 1-1.2: new low speed USB device using musb_hdrc and address 4                                                                        
usb 1-1.2: New USB device found, idVendor=04f2, idProduct=0402                                                                           
usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0                                                                      
usb 1-1.2: Product: USB Keyboard                                                                                                         
usb 1-1.2: Manufacturer: Chicony                                                                                                         
usb 1-1.3: new low speed USB device using musb_hdrc and address 5                                                                        
usb 1-1.3: New USB device found, idVendor=046d, idProduct=c058                                                                           
usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0                                                                      
usb 1-1.3: Product: USB Optical Mouse                                                                                                    
usb 1-1.3: Manufacturer: Logitech                                                                                                        
console [ttyO2] enabled                                                                                                                  
omap-hsuart.3: ttyO3 at MMIO 0x4806e000 (irq = 102) is a OMAP UART3                                                                      
brd: module loaded                                                                                                                       
loop: module loaded                                                                                                                      
smsc95xx v1.0.4                                                                                                                          
smsc95xx 1-1.1:1.0: usb0: register 'smsc95xx' at usb-musb_hdrc-1.1, smsc95xx USB 2.0 Ethernet, e6:48:71:af:f3:6e                         
usbcore: registered new interface driver smsc95xx                                                                                        
Initializing USB Mass Storage driver...                                                                                                  
usbcore: registered new interface driver usb-storage                                                                                     
USB Mass Storage support registered.                                                                                                     
udc: OMAP UDC driver, version: 4 October 2004 (iso) (dma)                                                                                
mice: PS/2 mouse device common for all mice                                                                                              
twl_rtc twl_rtc: rtc core: registered twl_rtc as rtc0                                                                                    
i2c /dev entries driver                                                                                                                  
Linux video capture interface: v2.00                                                                                                     
Driver for 1-wire Dallas network protocol.                                                                                               
1-Wire driver for the DS2760 battery monitor  chip  - (c) 2004-2005, Szabolcs Gyurko                                                     
i2c i2c-1: SMBus Quick command not supported, can't probe for chips                                                                      
OMAP Watchdog Timer Rev 0x00: initial timeout 60 sec                                                                                     
sdhci: Secure Digital Host Controller Interface driver                                                                                   
sdhci: Copyright(c) Pierre Ossman                                                                                                        
usbcore: registered new interface driver hiddev                                                                                          
input: Chicony USB Keyboard as /devices/platform/musb_hdrc/usb1/1-1/1-1.2/1-1.2:1.0/input/input0                                         
generic-usb 0003:04F2:0402.0001: input,hidraw0: USB HID v1.11 Keyboard [Chicony USB Keyboard] on usb-musb_hdrc-1.2/input0                
input: Chicony USB Keyboard as /devices/platform/musb_hdrc/usb1/1-1/1-1.2/1-1.2:1.1/input/input1                                         
generic-usb 0003:04F2:0402.0002: input,hiddev96,hidraw1: USB HID v1.11 Device [Chicony USB Keyboard] on usb-musb_hdrc-1.2/input1         
input: Logitech USB Optical Mouse as /devices/platform/musb_hdrc/usb1/1-1/1-1.3/1-1.3:1.0/input/input2                                   
generic-usb 0003:046D:C058.0003: input,hidraw2: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on usb-musb_hdrc-1.3/input0             
usbcore: registered new interface driver usbhid                                                                                          
usbhid: USB HID core driver                                                                                                              
proc4430_drv_initializeModule                                                                                                            
Could not look up aess hw_mod                                                                                                            
No device for DAI Multimedia                                                                                                             
No device for DAI Tones DL                                                                                                               
No device for DAI Voice                                                                                                                  
No device for DAI Digital Uplink                                                                                                         
No device for DAI Vibrator                                                                                                               
No device for DAI omap-mcbsp-dai-0                                                                                                       
No device for DAI omap-mcbsp-dai-1                                                                                                       
No device for DAI omap-mcbsp-dai-2                                                                                                       
No device for DAI omap-mcbsp-dai-3                                                                                                       
No device for DAI omap-abe-mm                                                                                                            
No device for DAI omap-abe-tone-dl                                                                                                       
No device for DAI omap-abe-voice                                                                                                         
No device for DAI omap-abe-dig-ul                                                                                                        
No device for DAI omap-abe-vib                                                                                                           
OMAP HDMI W1 rev 1.0                                                                                                                     
No device for DAI omap-hdmi-dai                                                                                                          
SDP4430 SoC init                                                                                                                         
No device for DAI null                                                                                                                   
asoc: Multimedia <-> omap-abe-mm mapping ok                                                                                              
asoc: Tones DL <-> omap-abe-tone-dl mapping ok                                                                                           
asoc: Voice <-> omap-abe-voice mapping ok                                                                                                
asoc: Digital Uplink <-> omap-abe-dig-ul mapping ok                                                                                      
asoc: Vibrator <-> omap-abe-vib mapping ok                                                                                               
asoc: null <-> omap-hdmi-dai mapping ok                                                                                                  
input: SDP4430 Headset Jack as /devices/platform/soc-audio/sound/card0/input3                                                            
ASoC: Failed to create Aux/FM Stereo In debugfs file                                                                                     
ALSA device list:                                                                                                                        
  #0: SDP4430 (twl6040)                                                                                                                  
mmc0: host does not support reading read-only switch. assuming write-enable.                                                             
mmc0: new high speed SDHC card at address a32e                                                                                           
aufs 2-standalone.tree-33-20100329                                                                                                       
oprofile: using timer interrupt.                                                                                                         
TCP cubic registered                                                                                                                     
NET: Registered protocol family 10                                                                                                       
lo: Disabled Privacy Extensions                                                                                                          
NET: Registered protocol family 17                                                                                                       
 Enabling AXI2OCP errata Fix                                                                                                             
VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 0                                                                  
mmcblk0: mmc0:a32e SD16G 14.9 GiB                                                                                                        
registered taskstats version 1                                                                                                           
 mmcblk0: p1 p2                                                                                                                          
Console: switching to colour frame buffer device 240x67                                                                                  
EDID TIMING DATA FOUND                                                                                                                   
regulator_init_complete: incomplete constraints, leaving VAUX3_6030 on                                                                   
regulator_init_complete: incomplete constraints, leaving VAUX2_6030 on                                                                   
regulator_init_complete: incomplete constraints, leaving VUSB on                                                                         
regulator_init_complete: incomplete constraints, leaving VDAC on                                                                         
regulator_init_complete: incomplete constraints, leaving VCXIO on                                                                        
regulator_init_complete: incomplete constraints, leaving VANA on                                                                         
regulator_init_complete: incomplete constraints, leaving VUSIM on                                                                        
regulator_init_complete: incomplete constraints, leaving VPP on                                                                          
twl_rtc twl_rtc: setting system clock to 2000-01-01 00:20:26 UTC (946686026)                                                             
omap_vout omap_vout: : registered and initialized video device 0                                                                         
omap_vout omap_vout: : registered and initialized video device 1                                                                         
omap_wb: registered and initialized wb device 2 [v4l2]                                                                                   
Display disabled                                                                                                                         
Freeing init memory: 208K                                                                                                                
Display disabled                                                                                                                         
udev: starting version 151                                                                                                               
EDID TIMING DATA supported NOT FOUND                                                                                                     
EDID TIMING DATA supported NOT FOUND                                                                                                     
kernel BUG at /build/buildd/linux-ti-omap4-2.6.34/drivers/video/omap2/dss/dispc.c:1657!                                                  
Unable to handle kernel NULL pointer dereference at virtual address 00000000                                                             
pgd = dcb28000                                                                                                                           
[00000000] *pgd=9cbcf031, *pte=00000000, *ppte=00000000                                                                                  
Internal error: Oops: 817 [#1] PREEMPT SMP                                                                                               
last sysfs file: /sys/kernel/uevent_seqnum                                                                                               
Modules linked in:                                                                                                                       
CPU: 0    Tainted: G    B       (2.6.34-902-omap4 #6-Ubuntu)                                                                             
PC is at __bug+0x1c/0x28                                                                                                                 
LR is at __bug+0x18/0x28                                                                                                                 
pc : [<c0040408>]    lr : [<c0040404>]    psr: 20000113                                                                                  
sp : dcbffde8  ip : df894220  fp : 00000000                                                                                              
r10: 00000000  r9 : 00000000  r8 : 00000000                                                                                              
r7 : 00000085  r6 : dcbffe08  r5 : 00000000  r4 : c06bd028                                                                               
r3 : 00000000  r2 : dcbffddc  r1 : c05d65dc  r0 : 0000005e                                                                               
Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user                                                                        
Control: 10c53c7d  Table: 9cb2804a  DAC: 00000015                                                                                        
Process init (pid: 159, stack limit = 0xdcbfe2f0)                                                                                        
Stack: (0xdcbffde8 to 0xdcc00000)                                                                                                        
fde0:                   df0a8000 c02b0098 c06bd028 c02bf890 00002030 00003720                                                            
fe00: 00002020 00000a30 00000000 ffffffff 00000000 c04db9e4 31f8000f 0020cccc                                                            
fe20: 0001d2f2 0001007b c06bd028 00000001 c06a63bc c02bfe04 00000085 00000002                                                            
fe40: 00000000 da425740 dcbfe000 c00ab6c0 c06a6380 00000085 c06a63bc da425740                                                            
fe60: 00000000 dcbfe000 beb4c274 c00ad834 00000085 00000000 c003a984 dcbffea0                                                            
fe80: 00000000 c003c07c 60000113 ffffffff fa240100 00000085 00000001 c04de988                                                            
fea0: beb4c274 00000000 00000000 00000000 dcbfffb0 0000081f dcb31ba0 dcb3b9c0                                                            
fec0: dcb31bd4 400180f0 beb4c274 00000000 00000000 dcbffee8 c003c378 c04e0990                                                            
fee0: 60000113 ffffffff beb4c274 0000081f 0000081f c06b1444 beb4c274 dcbfffb0                                                            
ff00: 00000000 400180f0 40104000 c003c378 c06b0218 c04e0d5c 00000000 00000002                                                            
ff20: c06a0000 c04dee14 22af3d82 dcb38288 00000000 dcbfe000 00000011 c0075960                                                            
ff40: 22c166ab ffffffff dcbfff8c 00000000 00000000 c04de92c 40018158 c06bfbf0                                                            
ff60: 0000009f dcb3b9c0 dcbfe000 dcb38420 00000000 00000000 00000000 00000000                                                            
ff80: 00000000 dcbfffac d964e044 dcbfffa0 c006cb2c c028309c 40000013 ffffffff                                                            
ffa0: beb4c290 00000001 beb4c2a0 c04dede0 00001210 4001e050 4006f350 00094cb0                                                            
ffc0: 40018158 beb4c290 00000001 beb4c2a0 00000000 400180f0 40104000 00000000                                                            
ffe0: 00000078 beb4c290 4008e1d9 4006f34e 00000030 ffffffff 00000fff 00001000                                                            
[<c0040408>] (__bug+0x1c/0x28) from [<c02b0098>] (dispc_set_digit_size+0x1c/0x68)                                                        
[<c02b0098>] (dispc_set_digit_size+0x1c/0x68) from [<c02bf890>] (hdmi_power_on+0x150/0x188)                                              
[<c02bf890>] (hdmi_power_on+0x150/0x188) from [<c02bfe04>] (hdmi_irq_handler+0x90/0x12c)                                                 
[<c02bfe04>] (hdmi_irq_handler+0x90/0x12c) from [<c00ab6c0>] (handle_IRQ_event+0xa0/0x190)                                               
[<c00ab6c0>] (handle_IRQ_event+0xa0/0x190) from [<c00ad834>] (handle_level_irq+0xb0/0x12c)                                               
[<c00ad834>] (handle_level_irq+0xb0/0x12c) from [<c003c07c>] (asm_do_IRQ+0x7c/0xac)                                                      
[<c003c07c>] (asm_do_IRQ+0x7c/0xac) from [<c04de988>] (__irq_svc+0x48/0xbc)                                                              
Exception stack(0xdcbffea0 to 0xdcbffee8)                                                                                                
fea0: beb4c274 00000000 00000000 00000000 dcbfffb0 0000081f dcb31ba0 dcb3b9c0                                                            
fec0: dcb31bd4 400180f0 beb4c274 00000000 00000000 dcbffee8 c003c378 c04e0990                                                            
fee0: 60000113 ffffffff                                                                                                                  
[<c04de988>] (__irq_svc+0x48/0xbc) from [<c04e0990>] (do_page_fault+0xd0/0x1c4)                                                          
[<c04e0990>] (do_page_fault+0xd0/0x1c4) from [<c003c378>] (do_DataAbort+0x34/0x98)                                                       
[<c003c378>] (do_DataAbort+0x34/0x98) from [<c04dede0>] (ret_from_exception+0x0/0x10)                                                    
Exception stack(0xdcbfffb0 to 0xdcbffff8)                                                                                                
ffa0:                                     00001210 4001e050 4006f350 00094cb0                                                            
ffc0: 40018158 beb4c290 00000001 beb4c2a0 00000000 400180f0 40104000 00000000                                                            
ffe0: 00000078 beb4c290 4008e1d9 4006f34e 00000030 ffffffff                                                                              
Code: e59f0010 e1a01003 eb126d71 e3a03000 (e5833000)                                                                                     
---[ end trace 7fb6b32c16c3d45e ]---                                                                                                     
Kernel panic - not syncing: Fatal exception in interrupt                                                                                 
[<c0043684>] (unwind_backtrace+0x0/0xe4) from [<c04db944>] (panic+0x44/0xcc)                                                             
[<c04db944>] (panic+0x44/0xcc) from [<c0040a7c>] (die+0xd4/0xfc)                                                                         
[<c0040a7c>] (die+0xd4/0xfc) from [<c00446e8>] (__do_kernel_fault+0x64/0x84)                                                             
[<c00446e8>] (__do_kernel_fault+0x64/0x84) from [<c04e0a68>] (do_page_fault+0x1a8/0x1c4)                                                 
[<c04e0a68>] (do_page_fault+0x1a8/0x1c4) from [<c003c378>] (do_DataAbort+0x34/0x98)                                                      
[<c003c378>] (do_DataAbort+0x34/0x98) from [<c04de92c>] (__dabt_svc+0x4c/0x60)                                                           
Exception stack(0xdcbffda0 to 0xdcbffde8)                                                                                                
fda0: 0000005e c05d65dc dcbffddc 00000000 c06bd028 00000000 dcbffe08 00000085                                                            
fdc0: 00000000 00000000 00000000 00000000 df894220 dcbffde8 c0040404 c0040408                                                            
fde0: 20000113 ffffffff                                                                                                                  
[<c04de92c>] (__dabt_svc+0x4c/0x60) from [<c0040408>] (__bug+0x1c/0x28)                                                                  
[<c0040408>] (__bug+0x1c/0x28) from [<c02b0098>] (dispc_set_digit_size+0x1c/0x68)                                                        
[<c02b0098>] (dispc_set_digit_size+0x1c/0x68) from [<c02bf890>] (hdmi_power_on+0x150/0x188)                                              
[<c02bf890>] (hdmi_power_on+0x150/0x188) from [<c02bfe04>] (hdmi_irq_handler+0x90/0x12c)                                                 
[<c02bfe04>] (hdmi_irq_handler+0x90/0x12c) from [<c00ab6c0>] (handle_IRQ_event+0xa0/0x190)                                               
[<c00ab6c0>] (handle_IRQ_event+0xa0/0x190) from [<c00ad834>] (handle_level_irq+0xb0/0x12c)                                               
[<c00ad834>] (handle_level_irq+0xb0/0x12c) from [<c003c07c>] (asm_do_IRQ+0x7c/0xac)                                                      
[<c003c07c>] (asm_do_IRQ+0x7c/0xac) from [<c04de988>] (__irq_svc+0x48/0xbc)                                                              
Exception stack(0xdcbffea0 to 0xdcbffee8)                                                                                                
fea0: beb4c274 00000000 00000000 00000000 dcbfffb0 0000081f dcb31ba0 dcb3b9c0                                                            
fec0: dcb31bd4 400180f0 beb4c274 00000000 00000000 dcbffee8 c003c378 c04e0990                                                            
fee0: 60000113 ffffffff                                                                                                                  
[<c04de988>] (__irq_svc+0x48/0xbc) from [<c04e0990>] (do_page_fault+0xd0/0x1c4)                                                          
[<c04e0990>] (do_page_fault+0xd0/0x1c4) from [<c003c378>] (do_DataAbort+0x34/0x98)                                                       
[<c003c378>] (do_DataAbort+0x34/0x98) from [<c04dede0>] (ret_from_exception+0x0/0x10)                                                    
Exception stack(0xdcbfffb0 to 0xdcbffff8)                                                                                                
ffa0:                                     00001210 4001e050 4006f350 00094cb0                                                            
ffc0: 40018158 beb4c290 00000001 beb4c2a0 00000000 400180f0 40104000 00000000                                                            
ffe0: 00000078 beb4c290 4008e1d9 4006f34e 00000030 ffffffff                                                                              
CPU1: stopping                                                                                                                           
[<c0043684>] (unwind_backtrace+0x0/0xe4) from [<c004204c>] (ipi_cpu_stop+0x20/0x48)                                                      
[<c004204c>] (ipi_cpu_stop+0x20/0x48) from [<c003c268>] (do_IPI+0xc0/0x104)                                                              
[<c003c268>] (do_IPI+0xc0/0x104) from [<c04de988>] (__irq_svc+0x48/0xbc)                                                                 
Exception stack(0xdc857fa0 to 0xdc857fe8)                                                                                                
7fa0: 00000001 dcb39ce0 dc857fe8 00000000 dc856000 00000015 10c03c7d c070ef28                                                            
7fc0: 00000000 410fc091 00000000 00000000 dcb36044 dc857fe8 c003dc78 c003dc7c                                                            
7fe0: 60000013 ffffffff                                                                                                                  
[<c04de988>] (__irq_svc+0x48/0xbc) from [<c003dc7c>] (default_idle+0x24/0x28)                                                            
[<c003dc7c>] (default_idle+0x24/0x28) from [<c003e168>] (cpu_idle+0x74/0xc4)                                                             
[<c003e168>] (cpu_idle+0x74/0xc4) from [<80008080>] (0x80008080)

-- 
Unable to handle kernel NULL pointer dereference at virtual address 00000000
https://bugs.launchpad.net/bugs/612895
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