Public bug reported:

Binary package hint: xorg

Ubuntu crashed.

(I'm not sure if this is kernel or xorg problem.)

Description:    Ubuntu 9.04
Release:        9.04

xorg:
  Installed: 1:7.4~5ubuntu18
  Candidate: 1:7.4~5ubuntu18
  Version table:
 *** 1:7.4~5ubuntu18 0
        500 http://astromirror.uchicago.edu jaunty/main Packages
        100 /var/lib/dpkg/status

I was starting Firefox and the computer froze. Hard reboot was needed.

This is what I found in the system log:
Apr 26 10:49:55 nikola-laptop kernel: [  841.970723] Xorg: Corrupted page table 
at address 7f9380e32c20
Apr 26 10:49:55 nikola-laptop kernel: [  841.970728] PGD 13e968067 PUD 
13dcf7067 PMD 1321bd067 PTE 9f9396f85709c6f
Apr 26 10:49:55 nikola-laptop kernel: [  841.970734] Bad pagetable: 000d [#1] 
SMP 
Apr 26 10:49:55 nikola-laptop kernel: [  841.970738] last sysfs file: 
/sys/devices/virtual/net/pan0/statistics/collisions
Apr 26 10:49:55 nikola-laptop kernel: [  841.970742] Dumping ftrace buffer:
Apr 26 10:49:55 nikola-laptop kernel: [  841.970744]    (ftrace buffer empty)
Apr 26 10:49:55 nikola-laptop kernel: [  841.970746] CPU 1 
Apr 26 10:49:55 nikola-laptop kernel: [  841.970748] Modules linked in: 
nls_iso8859_1 vfat fat nfs lockd nfs_acl sunrpc nls_cp437 cifs aes_x86_64 
aes_generic binfmt_misc ppdev bridge stp bnep input_polldev joydev lp parport 
snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm arc4 ecb snd_seq_dummy 
snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer 
iwlagn iwlcore snd_seq_device mac80211 snd psmouse asus_laptop video 
gspca_spca561 gspca_main compat_ioctl32 videodev sdhci_pci sdhci ricoh_mmc 
v4l1_compat btusb usbhid pcspkr serio_raw led_class output iTCO_wdt 
iTCO_vendor_support cfg80211 soundcore snd_page_alloc intel_agp nvidia(P) 
usb_storage ohci1394 ieee1394 r8169 mii fbcon tileblit font bitblit softcursor
Apr 26 10:49:55 nikola-laptop kernel: [  841.970817] Pid: 3207, comm: Xorg 
Tainted: P           2.6.28-11-generic #42-Ubuntu
Apr 26 10:49:55 nikola-laptop kernel: [  841.970819] RIP: 
0033:[<00007f9381f792c8>]  [<00007f9381f792c8>] 0x7f9381f792c8
Apr 26 10:49:55 nikola-laptop kernel: [  841.970825] RSP: 002b:00007fff8f741f00 
 EFLAGS: 00013206
Apr 26 10:49:55 nikola-laptop kernel: [  841.970827] RAX: 00007f9380c5d010 RBX: 
00007fff8f742b60 RCX: 0000000000000248
Apr 26 10:49:55 nikola-laptop kernel: [  841.970829] RDX: 00007fff8f742b60 RSI: 
0000000001c3a960 RDI: 00007f9380c5d010
Apr 26 10:49:55 nikola-laptop kernel: [  841.970832] RBP: 00007fff8f742b60 R08: 
0000000000000008 R09: 0000000000200000
Apr 26 10:49:55 nikola-laptop kernel: [  841.970834] R10: 0000000000000000 R11: 
00007f93852c236b R12: 00007fff8f742988
Apr 26 10:49:55 nikola-laptop kernel: [  841.970836] R13: 000000000131a350 R14: 
0000000000de1290 R15: 0000000000df6d50
Apr 26 10:49:55 nikola-laptop kernel: [  841.970839] FS:  
00007f938771e700(0000) GS:ffff88013f803a00(0000) knlGS:0000000000000000
Apr 26 10:49:55 nikola-laptop kernel: [  841.970841] CS:  0010 DS: 0000 ES: 
0000 CR0: 0000000080050033
Apr 26 10:49:55 nikola-laptop kernel: [  841.970844] CR2: 00007f9380e32c20 CR3: 
000000013d9b4000 CR4: 00000000000006a0
Apr 26 10:49:55 nikola-laptop kernel: [  841.970846] DR0: 0000000000000000 DR1: 
0000000000000000 DR2: 0000000000000000
Apr 26 10:49:55 nikola-laptop kernel: [  841.970849] DR3: 0000000000000000 DR6: 
00000000ffff0ff0 DR7: 0000000000000400
Apr 26 10:49:55 nikola-laptop kernel: [  841.970851] Process Xorg (pid: 3207, 
threadinfo ffff88013e4c6000, task ffff88013e4f1660)
Apr 26 10:49:55 nikola-laptop kernel: [  841.970853] 
Apr 26 10:49:55 nikola-laptop kernel: [  841.970855] RIP  [<00007f9381f792c8>] 
0x7f9381f792c8
Apr 26 10:49:55 nikola-laptop kernel: [  841.970858]  RSP <00007fff8f741f00>
Apr 26 10:49:55 nikola-laptop kernel: [  841.970861] ---[ end trace 
04cc99db14a2c753 ]---
Apr 26 10:49:55 nikola-laptop kernel: [  841.977264] BUG: unable to handle 
kernel paging request at ffffe2af8b55f0e8
Apr 26 10:49:55 nikola-laptop kernel: [  841.977271] IP: [<ffffffff802c2cd8>] 
zap_pte_range+0x1f8/0x420
Apr 26 10:49:55 nikola-laptop kernel: [  841.977280] PGD 0 
Apr 26 10:49:55 nikola-laptop kernel: [  841.977282] Oops: 0000 [#2] SMP 
Apr 26 10:49:55 nikola-laptop kernel: [  841.977285] last sysfs file: 
/sys/devices/virtual/net/pan0/statistics/collisions
Apr 26 10:49:55 nikola-laptop kernel: [  841.977288] CPU 1 
Apr 26 10:49:55 nikola-laptop kernel: [  841.977290] Modules linked in: 
nls_iso8859_1 vfat fat nfs lockd nfs_acl sunrpc nls_cp437 cifs aes_x86_64 
aes_generic binfmt_misc ppdev bridge stp bnep input_polldev joydev lp parport 
snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm arc4 ecb snd_seq_dummy 
snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer 
iwlagn iwlcore snd_seq_device mac80211 snd psmouse asus_laptop video 
gspca_spca561 gspca_main compat_ioctl32 videodev sdhci_pci sdhci ricoh_mmc 
v4l1_compat btusb usbhid pcspkr serio_raw led_class output iTCO_wdt 
iTCO_vendor_support cfg80211 soundcore snd_page_alloc intel_agp nvidia(P) 
usb_storage ohci1394 ieee1394 r8169 mii fbcon tileblit font bitblit softcursor
Apr 26 10:49:55 nikola-laptop kernel: [  841.977349] Pid: 3207, comm: Xorg 
Tainted: P      D    2.6.28-11-generic #42-Ubuntu
Apr 26 10:49:55 nikola-laptop kernel: [  841.977352] RIP: 
0010:[<ffffffff802c2cd8>]  [<ffffffff802c2cd8>] zap_pte_range+0x1f8/0x420
Apr 26 10:49:55 nikola-laptop kernel: [  841.977357] RSP: 0000:ffff88013e4c7ad8 
 EFLAGS: 00013246
Apr 26 10:49:55 nikola-laptop kernel: [  841.977359] RAX: 1174b227cf696890 RBX: 
ffffe2af8b55f0d0 RCX: 1174b227cf696890
Apr 26 10:49:55 nikola-laptop kernel: [  841.977361] RDX: ffffe20000000000 RSI: 
0000000000000001 RDI: 1174b227cf696890
Apr 26 10:49:55 nikola-laptop kernel: [  841.977363] RBP: ffff88013e4c7b58 R08: 
00007f9380e33000 R09: ffff88013e4c7c68
Apr 26 10:49:55 nikola-laptop kernel: [  841.977366] R10: 0000000000000002 R11: 
0000000000000000 R12: ffff8800280388c0
Apr 26 10:49:55 nikola-laptop kernel: [  841.977368] R13: ffff88013e4c7c68 R14: 
00007f9380e00000 R15: ffff8801321bd000
Apr 26 10:49:55 nikola-laptop kernel: [  841.977371] FS:  
0000000000000000(0000) GS:ffff88013f803a00(0000) knlGS:0000000000000000
Apr 26 10:49:55 nikola-laptop kernel: [  841.977373] CS:  0010 DS: 0000 ES: 
0000 CR0: 0000000080050033
Apr 26 10:49:55 nikola-laptop kernel: [  841.977375] CR2: ffffe2af8b55f0e8 CR3: 
0000000000201000 CR4: 00000000000006a0
Apr 26 10:49:55 nikola-laptop kernel: [  841.977377] DR0: 0000000000000000 DR1: 
0000000000000000 DR2: 0000000000000000
Apr 26 10:49:55 nikola-laptop kernel: [  841.977380] DR3: 0000000000000000 DR6: 
00000000ffff0ff0 DR7: 0000000000000400
Apr 26 10:49:55 nikola-laptop kernel: [  841.977382] Process Xorg (pid: 3207, 
threadinfo ffff88013e4c6000, task ffff88013e4f1660)
Apr 26 10:49:55 nikola-laptop kernel: [  841.977385] Stack:
Apr 26 10:49:55 nikola-laptop kernel: [  841.977386]  ffff88013e4c7af8 
ffffe200043f20b0 ffffe200042f6158 1174b227cf696890
Apr 26 10:49:55 nikola-laptop kernel: [  841.977391]  ffffe200042f6168 
00007f9380e33000 ffff88013e02bdc8 ffff88013c49fa80
Apr 26 10:49:55 nikola-laptop kernel: [  841.977396]  0000000000000000 
1174b227cf696890 ffff8800280388d8 00007f9380e33000
Apr 26 10:49:55 nikola-laptop kernel: [  841.977401] Call Trace:
Apr 26 10:49:55 nikola-laptop kernel: [  841.977403]  [<ffffffff802c3f7a>] 
unmap_page_range+0x2da/0x360
Apr 26 10:49:55 nikola-laptop kernel: [  841.977407]  [<ffffffff802c47ff>] 
unmap_vmas+0x16f/0x2a0
Apr 26 10:49:55 nikola-laptop kernel: [  841.977411]  [<ffffffff802baac3>] ? 
drain_cpu_pagevecs+0xa3/0xb0
Apr 26 10:49:55 nikola-laptop kernel: [  841.977416]  [<ffffffff802c9533>] 
exit_mmap+0xb3/0x170
Apr 26 10:49:55 nikola-laptop kernel: [  841.977420]  [<ffffffff8024eaf8>] 
mmput+0x38/0xd0
Apr 26 10:49:55 nikola-laptop kernel: [  841.977424]  [<ffffffff80252f56>] 
exit_mm+0x116/0x150
Apr 26 10:49:55 nikola-laptop kernel: [  841.977428]  [<ffffffff8069e471>] ? 
_spin_lock_irq+0x11/0x20
Apr 26 10:49:55 nikola-laptop kernel: [  841.977433]  [<ffffffff80254f0c>] 
do_exit+0x16c/0x3b0
Apr 26 10:49:55 nikola-laptop kernel: [  841.977437]  [<ffffffff8069f81e>] 
oops_end+0xbe/0xc0
Apr 26 10:49:55 nikola-laptop kernel: [  841.977440]  [<ffffffff802362d4>] 
pgtable_bad+0xa4/0xc0
Apr 26 10:49:55 nikola-laptop kernel: [  841.977445]  [<ffffffff806a15b6>] 
do_page_fault+0x536/0x780
Apr 26 10:49:55 nikola-laptop kernel: [  841.977449]  [<ffffffff80268930>] ? 
autoremove_wake_function+0x0/0x40
Apr 26 10:49:55 nikola-laptop kernel: [  841.977454]  [<ffffffff802e73e9>] ? 
fsnotify_access+0x69/0x80
Apr 26 10:49:55 nikola-laptop kernel: [  841.977459]  [<ffffffff802e815a>] ? 
vfs_read+0xda/0x130
Apr 26 10:49:55 nikola-laptop kernel: [  841.977462]  [<ffffffff8069e96a>] 
error_exit+0x0/0x70
Apr 26 10:49:55 nikola-laptop kernel: [  841.977466] Code: 49 8b 07 48 89 45 c8 
49 c7 07 00 00 00 00 48 85 db 41 c7 44 24 0c 01 00 00 00 0f 84 fb fe ff ff 48 
83 7d 10 00 0f 85 d0 01 00 00 <f6> 43 18 01 0f 84 4e 01 00 00 83 6d c4 01 48 8b 
75 b0 48 89 df 
Apr 26 10:49:55 nikola-laptop kernel: [  841.977505] RIP  [<ffffffff802c2cd8>] 
zap_pte_range+0x1f8/0x420
Apr 26 10:49:55 nikola-laptop kernel: [  841.977509]  RSP <ffff88013e4c7ad8>
Apr 26 10:49:55 nikola-laptop kernel: [  841.977511] CR2: ffffe2af8b55f0e8
Apr 26 10:49:55 nikola-laptop kernel: [  841.977513] ---[ end trace 
04cc99db14a2c753 ]---
Apr 26 10:49:55 nikola-laptop kernel: [  841.977516] Fixing recursive fault but 
reboot is needed!
Apr 26 10:50:00 nikola-laptop kernel: [  846.601520] general protection fault: 
0000 [#3] SMP 
Apr 26 10:50:00 nikola-laptop kernel: [  846.601528] last sysfs file: 
/sys/devices/virtual/net/pan0/statistics/collisions
Apr 26 10:50:00 nikola-laptop kernel: [  846.601532] CPU 1 
Apr 26 10:50:00 nikola-laptop kernel: [  846.601534] Modules linked in: 
nls_iso8859_1 vfat fat nfs lockd nfs_acl sunrpc nls_cp437 cifs aes_x86_64 
aes_generic binfmt_misc ppdev bridge stp bnep input_polldev joydev lp parport 
snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm arc4 ecb snd_seq_dummy 
snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer 
iwlagn iwlcore snd_seq_device mac80211 snd psmouse asus_laptop video 
gspca_spca561 gspca_main compat_ioctl32 videodev sdhci_pci sdhci ricoh_mmc 
v4l1_compat btusb usbhid pcspkr serio_raw led_class output iTCO_wdt 
iTCO_vendor_support cfg80211 soundcore snd_page_alloc intel_agp nvidia(P) 
usb_storage ohci1394 ieee1394 r8169 mii fbcon tileblit font bitblit softcursor
Apr 26 10:50:00 nikola-laptop kernel: [  846.601611] Pid: 2633, comm: 
dbus-daemon Tainted: P      D    2.6.28-11-generic #42-Ubuntu
Apr 26 10:50:00 nikola-laptop kernel: [  846.601614] RIP: 
0010:[<ffffffff802f74f3>]  [<ffffffff802f74f3>] do_poll+0xd3/0x280
Apr 26 10:50:00 nikola-laptop kernel: [  846.601625] RSP: 0018:ffff88013e017b18 
 EFLAGS: 00010206
Apr 26 10:50:00 nikola-laptop kernel: [  846.601628] RAX: 0058002e00700069 RBX: 
0000000000000000 RCX: ffff8801321bb300
Apr 26 10:50:00 nikola-laptop kernel: [  846.601632] RDX: ffff88013f115210 RSI: 
ffff88013e017b64 RDI: 0000000000000015
Apr 26 10:50:00 nikola-laptop kernel: [  846.601635] RBP: ffff88013e017b98 R08: 
ffff88013e017a68 R09: 0000000000000001
Apr 26 10:50:00 nikola-laptop kernel: [  846.601638] R10: 0000000000000000 R11: 
00000000ffffffff R12: ffff88013e017e84
Apr 26 10:50:00 nikola-laptop kernel: [  846.601641] R13: ffff8801321bb300 R14: 
0000000000000001 R15: ffff88013e017f04
Apr 26 10:50:00 nikola-laptop kernel: [  846.601645] FS:  
00007fb28d7fb780(0000) GS:ffff88013f803a00(0000) knlGS:0000000000000000
Apr 26 10:50:00 nikola-laptop kernel: [  846.601648] CS:  0010 DS: 0000 ES: 
0000 CR0: 0000000080050033
Apr 26 10:50:00 nikola-laptop kernel: [  846.601651] CR2: 000000000253b598 CR3: 
000000013e9f6000 CR4: 00000000000006a0
Apr 26 10:50:00 nikola-laptop kernel: [  846.601654] DR0: 0000000000000000 DR1: 
0000000000000000 DR2: 0000000000000000
Apr 26 10:50:00 nikola-laptop kernel: [  846.601657] DR3: 0000000000000000 DR6: 
00000000ffff0ff0 DR7: 0000000000000400
Apr 26 10:50:00 nikola-laptop kernel: [  846.601661] Process dbus-daemon (pid: 
2633, threadinfo ffff88013e016000, task ffff88013cced980)
Apr 26 10:50:00 nikola-laptop kernel: [  846.601664] Stack:
Apr 26 10:50:00 nikola-laptop kernel: [  846.601666]  ffff88013e017f48 
ffff88013e017bb8 ffff88013e017e08 0000000000000000
Apr 26 10:50:00 nikola-laptop kernel: [  846.601672]  ffff88013e017b58 
000000003cd52240 0000000005f5e100 ffff88013e017e08
Apr 26 10:50:00 nikola-laptop kernel: [  846.601678]  000000fcfe49ec6e 
0000000000000286 000000403e017e68 ffff88013e017bb8
Apr 26 10:50:00 nikola-laptop kernel: [  846.601686] Call Trace:
Apr 26 10:50:00 nikola-laptop kernel: [  846.601689]  [<ffffffff802f79d4>] 
do_sys_poll+0x134/0x200
Apr 26 10:50:00 nikola-laptop kernel: [  846.601694]  [<ffffffff802f8430>] ? 
__pollwait+0x0/0x120
Apr 26 10:50:00 nikola-laptop kernel: [  846.601698]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.601705]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.601710]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.601714]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.601719]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.601723]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.601728]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.601733]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.601737]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.601742]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.601747]  [<ffffffff802f7c97>] 
sys_poll+0x77/0x110
Apr 26 10:50:00 nikola-laptop kernel: [  846.601751]  [<ffffffff8021253a>] 
system_call_fastpath+0x16/0x1b
Apr 26 10:50:00 nikola-laptop kernel: [  846.601757] Code: 75 79 e9 8d 00 00 00 
90 48 8d 75 cc e8 67 14 ff ff 48 85 c0 49 89 c5 90 0f 84 fa 00 00 00 48 8b 40 
20 48 85 c0 0f 84 cd 00 00 00 <48> 8b 40 38 48 85 c0 0f 84 c0 00 00 00 48 8b 75 
98 4c 89 ef ff 
Apr 26 10:50:00 nikola-laptop kernel: [  846.601810] RIP  [<ffffffff802f74f3>] 
do_poll+0xd3/0x280
Apr 26 10:50:00 nikola-laptop kernel: [  846.601815]  RSP <ffff88013e017b18>
Apr 26 10:50:00 nikola-laptop kernel: [  846.601819] ---[ end trace 
04cc99db14a2c753 ]---
Apr 26 10:50:00 nikola-laptop kernel: [  846.602240] general protection fault: 
0000 [#4] SMP 
Apr 26 10:50:00 nikola-laptop kernel: [  846.602244] last sysfs file: 
/sys/devices/virtual/net/pan0/statistics/collisions
Apr 26 10:50:00 nikola-laptop kernel: [  846.602247] CPU 1 
Apr 26 10:50:00 nikola-laptop kernel: [  846.602250] Modules linked in: 
nls_iso8859_1 vfat fat nfs lockd nfs_acl sunrpc nls_cp437 cifs aes_x86_64 
aes_generic binfmt_misc ppdev bridge stp bnep input_polldev joydev lp parport 
snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm arc4 ecb snd_seq_dummy 
snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer 
iwlagn iwlcore snd_seq_device mac80211 snd psmouse asus_laptop video 
gspca_spca561 gspca_main compat_ioctl32 videodev sdhci_pci sdhci ricoh_mmc 
v4l1_compat btusb usbhid pcspkr serio_raw led_class output iTCO_wdt 
iTCO_vendor_support cfg80211 soundcore snd_page_alloc intel_agp nvidia(P) 
usb_storage ohci1394 ieee1394 r8169 mii fbcon tileblit font bitblit softcursor
Apr 26 10:50:00 nikola-laptop kernel: [  846.602324] Pid: 2633, comm: 
dbus-daemon Tainted: P      D    2.6.28-11-generic #42-Ubuntu
Apr 26 10:50:00 nikola-laptop kernel: [  846.602328] RIP: 
0010:[<ffffffff802e550a>]  [<ffffffff802e550a>] filp_close+0x2a/0x90
Apr 26 10:50:00 nikola-laptop kernel: [  846.602335] RSP: 0018:ffff88013e0178f8 
 EFLAGS: 00010206
Apr 26 10:50:00 nikola-laptop kernel: [  846.602338] RAX: 0058002e00700069 RBX: 
ffff8801321bb300 RCX: 0000000000000265
Apr 26 10:50:00 nikola-laptop kernel: [  846.602341] RDX: 0000000000000000 RSI: 
ffff88013f115200 RDI: ffff8801321bb300
Apr 26 10:50:00 nikola-laptop kernel: [  846.602344] RBP: ffff88013e017918 R08: 
ffff88013f115200 R09: 8000000000000000
Apr 26 10:50:00 nikola-laptop kernel: [  846.602347] R10: 0000000000000001 R11: 
0000000000000000 R12: ffff88013f115200
Apr 26 10:50:00 nikola-laptop kernel: [  846.602350] R13: ffff88013f115210 R14: 
0000000000000000 R15: 0000000000000015
Apr 26 10:50:00 nikola-laptop kernel: [  846.602354] FS:  
0000000000000000(0000) GS:ffff88013f803a00(0000) knlGS:0000000000000000
Apr 26 10:50:00 nikola-laptop kernel: [  846.602357] CS:  0010 DS: 0000 ES: 
0000 CR0: 0000000080050033
Apr 26 10:50:00 nikola-laptop kernel: [  846.602360] CR2: 000000000253b598 CR3: 
0000000000201000 CR4: 00000000000006a0
Apr 26 10:50:00 nikola-laptop kernel: [  846.602363] DR0: 0000000000000000 DR1: 
0000000000000000 DR2: 0000000000000000
Apr 26 10:50:00 nikola-laptop kernel: [  846.602366] DR3: 0000000000000000 DR6: 
00000000ffff0ff0 DR7: 0000000000000400
Apr 26 10:50:00 nikola-laptop kernel: [  846.602369] Process dbus-daemon (pid: 
2633, threadinfo ffff88013e016000, task ffff88013cced980)
Apr 26 10:50:00 nikola-laptop kernel: [  846.602372] Stack:
Apr 26 10:50:00 nikola-laptop kernel: [  846.602374]  0000000000000282 
00000000000fffff 0000000000000000 ffff88013f115210
Apr 26 10:50:00 nikola-laptop kernel: [  846.602379]  ffff88013e017958 
ffffffff802530ad ffff88013f115200 ffff88013ccedf74
Apr 26 10:50:00 nikola-laptop kernel: [  846.602385]  ffff88013cced980 
ffff88013f115200 0000000000000246 ffff88013ccedf78
Apr 26 10:50:00 nikola-laptop kernel: [  846.602392] Call Trace:
Apr 26 10:50:00 nikola-laptop kernel: [  846.602394]  [<ffffffff802530ad>] 
put_files_struct+0x7d/0xe0
Apr 26 10:50:00 nikola-laptop kernel: [  846.602400]  [<ffffffff8025315f>] 
exit_files+0x4f/0x60
Apr 26 10:50:00 nikola-laptop kernel: [  846.602405]  [<ffffffff80254f51>] 
do_exit+0x1b1/0x3b0
Apr 26 10:50:00 nikola-laptop kernel: [  846.602410]  [<ffffffff8069f81e>] 
oops_end+0xbe/0xc0
Apr 26 10:50:00 nikola-laptop kernel: [  846.602416]  [<ffffffff80215cbe>] 
die+0x5e/0x90
Apr 26 10:50:00 nikola-laptop kernel: [  846.602422]  [<ffffffff8069f4c8>] 
do_general_protection+0x158/0x160
Apr 26 10:50:00 nikola-laptop kernel: [  846.602427]  [<ffffffff8069e96a>] 
error_exit+0x0/0x70
Apr 26 10:50:00 nikola-laptop kernel: [  846.602432]  [<ffffffff802f74f3>] ? 
do_poll+0xd3/0x280
Apr 26 10:50:00 nikola-laptop kernel: [  846.602437]  [<ffffffff802f74d9>] ? 
do_poll+0xb9/0x280
Apr 26 10:50:00 nikola-laptop kernel: [  846.602442]  [<ffffffff802f79d4>] 
do_sys_poll+0x134/0x200
Apr 26 10:50:00 nikola-laptop kernel: [  846.602446]  [<ffffffff802f8430>] ? 
__pollwait+0x0/0x120
Apr 26 10:50:00 nikola-laptop kernel: [  846.602450]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.602455]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.602460]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.602464]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.602469]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.602473]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.602478]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.602483]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.602487]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.602492]  [<ffffffff8024a580>] ? 
default_wake_function+0x0/0x10
Apr 26 10:50:00 nikola-laptop kernel: [  846.602497]  [<ffffffff802f7c97>] 
sys_poll+0x77/0x110
Apr 26 10:50:00 nikola-laptop kernel: [  846.602501]  [<ffffffff8021253a>] 
system_call_fastpath+0x16/0x1b
Apr 26 10:50:00 nikola-laptop kernel: [  846.602506] Code: fe 55 48 89 e5 48 83 
ec 20 48 89 5d e8 4c 89 65 f0 48 89 fb 4c 89 6d f8 48 83 7f 28 00 49 89 f4 74 
54 48 8b 47 20 48 85 c0 74 46 <48> 8b 40 68 48 85 c0 74 3d 0f 1f 44 00 00 ff d0 
41 89 c5 4c 89 
Apr 26 10:50:00 nikola-laptop kernel: [  846.602559] RIP  [<ffffffff802e550a>] 
filp_close+0x2a/0x90
Apr 26 10:50:00 nikola-laptop kernel: [  846.602564]  RSP <ffff88013e0178f8>
Apr 26 10:50:00 nikola-laptop kernel: [  846.602566] ---[ end trace 
04cc99db14a2c753 ]---
Apr 26 10:50:00 nikola-laptop kernel: [  846.602569] Fixing recursive fault but 
reboot is needed!

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: nvidia
Package: xorg 1:7.4~5ubuntu18
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersion: Linux version 2.6.28-11-generic (bui...@crested) (gcc version 
4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #42-Ubuntu SMP Fri Apr 17 01:58:03 UTC 2009
SourcePackage: xorg
Uname: Linux 2.6.28-11-generic x86_64

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug

-- 
Xorg has a corrupted page table
https://bugs.launchpad.net/bugs/367410
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