Finally I have managed to trap more information on this bug. Here is
from my /var/log/messages in the past few days. What you see at the top
of the list is the npviewer segfault, and you can see that this is not
fatal, at least not directly by any means, as the computer kept running
apparently normally for more than three hours afterwards. Then suddenly
at three o'clock in the night, something not usual takes place. I cannot
understand what is going on - but you can also see that when I returned
to the computer the following afternoon I had to restart it to get
something done.
Apr 29 23:51:00 localhost kernel: [50992.665836] npviewer.bin[20030]: segfault
at 00000000f5dff030 rip 00000000f793e404 rsp 00000000ff959958 error 4
Apr 30 00:08:28 localhost -- MARK --
Apr 30 00:28:29 localhost -- MARK --
Apr 30 00:48:29 localhost -- MARK --
Apr 30 01:08:29 localhost -- MARK --
Apr 30 01:28:29 localhost -- MARK --
Apr 30 01:48:29 localhost -- MARK --
Apr 30 02:08:29 localhost -- MARK --
Apr 30 02:28:30 localhost -- MARK --
Apr 30 02:48:30 localhost -- MARK --
Apr 30 03:08:30 localhost -- MARK --
Apr 30 03:09:59 localhost kernel: [62924.460685]
Apr 30 03:09:59 localhost kernel: [62924.460686] Call Trace:
<ffffffff802bab78>{bad_page+88} <ffffffff8020a202>{get_page_from_freelist+834}
Apr 30 03:09:59 localhost kernel: [62924.460728]
<ffffffff8020f02e>{__alloc_pages+110}
<ffffffff8028de20>{default_wake_function+0}
Apr 30 03:09:59 localhost kernel: [62924.460744]
<ffffffff8022dbc1>{get_zeroed_page+33} <ffffffff80216133>{__pte_alloc+35}
Apr 30 03:09:59 localhost kernel: [62924.460753]
<ffffffff80208334>{copy_page_range+1236} <ffffffff8020815d>{copy_page_range+765}
Apr 30 03:09:59 localhost kernel: [62924.460777]
<ffffffff802200e5>{copy_process+3221} <ffffffff80233818>{do_fork+264}
Apr 30 03:09:59 localhost kernel: [62924.460802]
<ffffffff80222b00>{__up_read+80} <ffffffff8026580e>{system_call+126}
Apr 30 03:09:59 localhost kernel: [62924.460817]
<ffffffff80265b1b>{ptregscall_common+103}
Apr 30 03:10:07 localhost kernel: [62931.708697] CPU 0
Apr 30 03:10:07 localhost kernel: [62931.708699] Modules linked in: nfs lockd
sunrpc binfmt_misc rfcomm hidp l2cap bluetooth cpufreq_powersave cpufreq_stats
cpufreq_user
space cpufreq_ondemand cpufreq_conservative freq_table tc1100_wmi video battery
container sbs button pcc_acpi sony_acpi i2c_ec ac dev_acpi asus_acpi hotkey
nls_iso8859_1
nls_cp437 vfat fat nls_utf8 ntfs dm_mod md_mod ipv6 fuse sr_mod sbp2 lp
af_packet tsdev snd_hda_intel snd_hda_codec sg parport_pc joydev snd_pcm_oss
snd_mixer_oss wacom
nvidia snd_pcm parport i2c_core snd_timer shpchp evdev psmouse pci_hotplug
serio_raw snd pcspkr soundcore snd_page_alloc reiserfs usbhid forcedeth
ohci1394 ohci_hcd iee
e1394 ehci_hcd usbcore ide_generic ahci jmicron ide_cd cdrom sd_mod sata_nv
libata scsi_mod generic amd74xx thermal processor fan vesafb capability
commoncap vga16fb cfb
copyarea vgastate cfbimgblt cfbfillrect fbcon tileblit font bitblit softcursor
Apr 30 03:10:07 localhost kernel: [62931.708737] Pid: 20545, comm: artsd
Tainted: P B 2.6.17-10-generic #2
Apr 30 03:10:07 localhost kernel: [62931.708740] RIP:
0010:[set_page_dirty+34/80] <ffffffff802bb822>{set_page_dirty+34}
Apr 30 03:10:07 localhost kernel: [62931.708748] RSP: 0018:ffff810026157db0
EFLAGS: 00010282
Apr 30 03:10:07 localhost kernel: [62931.708752] RAX: 56b8000000000000 RBX:
ffff810053d71c58 RCX: ffff810001010400
Apr 30 03:10:07 localhost kernel: [62931.708756] RDX: ffff8100622b3b02 RSI:
800000002767d045 RDI: ffff81007eb91b58
Apr 30 03:10:07 localhost kernel: [62931.708759] RBP: 0000000000600000 R08:
ffff810026157ea8 R09: 0000000000000000
Apr 30 03:10:07 localhost kernel: [62931.708761] R10: 0000000000000000 R11:
0000000000000202 R12: 000000000058b000
Apr 30 03:10:07 localhost kernel: [62931.708765] R13: ffff81007eb91b58 R14:
000000002767d045 R15: 00000000003a1fd2
Apr 30 03:10:07 localhost kernel: [62931.708768] FS: 00002b2fe40d2910(0000)
GS:ffffffff805f3000(0000) knlGS:00000000f75766b0
Apr 30 03:10:07 localhost kernel: [62931.708771] CS: 0010 DS: 0000 ES: 0000
CR0: 000000008005003b
Apr 30 03:10:07 localhost kernel: [62931.708774] CR2: 00002b2fe2035000 CR3:
0000000030761000 CR4: 00000000000006e0
Apr 30 03:10:07 localhost kernel: [62931.708778] Process artsd (pid: 20545,
threadinfo ffff810026156000, task ffff81000ba791a0)
Apr 30 03:10:07 localhost kernel: [62931.708779] Stack: ffffffff80207adf
800000005f44b065 0000000000000000 ffff810026157ea8
Apr 30 03:10:07 localhost kernel: [62931.708786] ffffffffffffffff
0000000000000000 ffff810060712e30 ffff810026157eb0
Apr 30 03:10:07 localhost kernel: [62931.708792] 0000000000000000
00000001651a9c60
Apr 30 03:10:07 localhost kernel: [62931.708795] Call Trace:
<ffffffff80207adf>{unmap_vmas+1039} <ffffffff8023d96c>{exit_mmap+124}
Apr 30 03:10:07 localhost kernel: [62931.708824]
<ffffffff80240214>{mmput+52} <ffffffff80215100>{do_exit+560}
Apr 30 03:10:07 localhost kernel: [62931.708840]
<ffffffff8024ebd8>{do_group_exit+200} <ffffffff8026580e>{system_call+126}
Apr 30 03:10:07 localhost kernel: [62931.708858]
Apr 30 03:10:07 localhost kernel: [62931.708860] Code: 48 8b 40 20 48 85 c0 74
06 49 89 c3 41 ff e3 e9 da 48 01 00
Apr 30 03:10:07 localhost kernel: [62931.708874] <1>Fixing recursive fault but
reboot is needed!
Apr 30 03:17:01 localhost kernel: [63345.446360] cron[20548]: segfault at
0000000000000e03 rip 0000000000000e03 rsp 00007fff9392ced0 error 14
Apr 30 03:19:34 localhost kernel: [63498.048658] Xorg[5312] trap invalid opcode
rip:2b5df8c17660 rsp:7fffb2852fd8 error:0
Apr 30 13:23:19 localhost syslogd 1.4.1#18ubuntu6: restart.
Apr 30 13:23:19 localhost kernel: Inspecting /boot/System.map-2.6.17-10-generic
Apr 30 13:23:19 localhost kernel: Loaded 23625 symbols from
/boot/System.map-2.6.17-10-generic.
Apr 30 13:23:19 localhost kernel: Symbols match kernel version 2.6.17.
--
screensaver (?) locks up computer or causes reboot
https://bugs.launchpad.net/bugs/91132
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