[Bug 10275] New: Unable to handle kernel NULL pointer dereference at virtual address 00000000

Fri Apr 29 03:37:22 UTC 2005

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http://bugzilla.ubuntu.com/show_bug.cgi?id=10275
Ubuntu | linux

           Summary: Unable to handle kernel NULL pointer dereference at
                    virtual address 00000000
           Product: Ubuntu
           Version: unspecified
          Platform: i386
        OS/Version: other
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: linux
        AssignedTo: fabbione at ubuntu.com
        ReportedBy: jsf at ciencias.unam.mx
         QAContact: kernel-bugs at lists.ubuntu.com

Hello, my X has been sometimes freezing and sometimes dying with errors similar
to the one in the Summary, sometimes the whole machines freezes up, it doesn't
seem to be regular but it has always happened to me under relatively high load.
 It seems to have something to do with xorg.

I'll be more than happy to help solving the bug in any way I can.  BTW this is a
vanilla Ubuntu 5.04 install, except that I'm using the rt2500 drivers for my
wireless card.

This is one of the errors in kernel.log, let me know if you need more samples or
the whole file:

Apr 27 17:05:22 localhost kernel: Unable to handle kernel paging request at
virtual address 2a50bd70
Apr 27 17:05:22 localhost kernel:  printing eip:
Apr 27 17:05:22 localhost kernel: 2a50bd70
Apr 27 17:05:22 localhost kernel: *pde = 00000000
Apr 27 17:05:22 localhost kernel: Oops: 0000 [#1]
Apr 27 17:05:22 localhost kernel: PREEMPT 
Apr 27 17:05:22 localhost kernel: Modules linked in: proc_intf freq_table
cpufreq_userspace cpufreq_ondemand cpufreq_powersave video sony_acpi pcc_acpi
button battery container ac ipv6 af_packet rt2500 emu10k1_gp gameport
snd_emu10k1 snd_rawmidi snd_seq_device snd_ac97_codec snd_pcm_oss snd_mixer_oss
snd_pcm snd_timer snd_page_alloc snd_util_mem snd_hwdep snd soundcore i2c_viapro
i2c_core uhci_hcd usbcore pci_hotplug via_agp agpgart floppy pcspkr rtc md
dm_mod capability commoncap tsdev evdev psmouse mousedev parport_pc lp parport
ide_cd cdrom ext3 jbd mbcache ide_generic via82cxxx ide_disk ide_core unix
thermal processor fan fbcon font bitblit vesafb cfbcopyarea cfbimgblt cfbfillrect
Apr 27 17:05:22 localhost kernel: CPU:    0
Apr 27 17:05:22 localhost kernel: EIP:    0060:[<2a50bd70>]    Not tainted VLI
Apr 27 17:05:22 localhost kernel: EFLAGS: 00013296   (2.6.10-5-k7) 
Apr 27 17:05:22 localhost kernel: EIP is at 0x2a50bd70
Apr 27 17:05:22 localhost kernel: eax: fffffff2   ebx: 00000073   ecx: ffffffff
  edx: eaa0409d
Apr 27 17:05:22 localhost kernel: esi: 00003246   edi: bffff630   ebp: 0000007b
  esp: cc52c004
Apr 27 17:05:22 localhost kernel: ds: 007b   es: 007b   ss: 0068
Apr 27 17:05:22 localhost kernel: Process Xorg (pid: 5814, threadinfo=cc52a000
task=cc503b00)
Apr 27 17:05:22 localhost kernel: Stack: 64f03d7f 8861077c 3a6faaab ae18bcac
eaa04095 030b0eaa fe1fdc24 c56c5e00 
Apr 27 17:05:22 localhost kernel:        e000c4c1 2611d19a 5960d096 29b44327
9083c381 3300e61e 2c1c581c 02d0ffa0 
Apr 27 17:05:22 localhost kernel:        6536538e 0da7aee3 abc03001 556309d8
181c90f0 8358c124 438c5408 8041dce4 
Apr 27 17:05:22 localhost kernel: Call Trace:
Apr 27 17:05:22 localhost kernel:  [acpi_rs_list_to_byte_stream+91/247]
acpi_rs_list_to_byte_stream+0x5b/0xf7
Apr 27 17:05:22 localhost kernel:  =======================
Apr 27 17:05:22 localhost kernel: Unable to handle kernel paging request at
virtual address 29b44327
Apr 27 17:05:22 localhost kernel:  printing eip:
Apr 27 17:05:22 localhost kernel: c0103bb0
Apr 27 17:05:23 localhost kernel: *pde = 00000000
Apr 27 17:05:23 localhost kernel: Oops: 0000 [#2]
Apr 27 17:05:23 localhost kernel: PREEMPT 
Apr 27 17:05:23 localhost kernel: Modules linked in: proc_intf freq_table
cpufreq_userspace cpufreq_ondemand cpufreq_powersave video sony_acpi pcc_acpi
button battery container ac ipv6 af_packet rt2500 emu10k1_gp gameport
snd_emu10k1 snd_rawmidi snd_seq_device snd_ac97_codec snd_pcm_oss snd_mixer_oss
snd_pcm snd_timer snd_page_alloc snd_util_mem snd_hwdep snd soundcore i2c_viapro
i2c_core uhci_hcd usbcore pci_hotplug via_agp agpgart floppy pcspkr rtc md
dm_mod capability commoncap tsdev evdev psmouse mousedev parport_pc lp parport
ide_cd cdrom ext3 jbd mbcache ide_generic via82cxxx ide_disk ide_core unix
thermal processor fan fbcon font bitblit vesafb cfbcopyarea cfbimgblt cfbfillrect
Apr 27 17:05:23 localhost kernel: CPU:    0
Apr 27 17:05:23 localhost kernel: EIP:    0060:[show_trace+35/127]    Not
tainted VLI
Apr 27 17:05:23 localhost kernel: EFLAGS: 00013093   (2.6.10-5-k7) 
Apr 27 17:05:23 localhost kernel: EIP is at show_trace+0x23/0x7f
Apr 27 17:05:23 localhost kernel: eax: 00000019   ebx: 29b44327   ecx: c01fe2a9
  edx: 00003086
Apr 27 17:05:23 localhost kernel: esi: 29b44327   edi: 29b44000   ebp: 29b45ffd
  esp: cc52be5c
Apr 27 17:05:23 localhost kernel: ds: 007b   es: 007b   ss: 0068
Apr 27 17:05:23 localhost kernel: Process Xorg (pid: 5814, threadinfo=cc52a000
task=cc503b00)
Apr 27 17:05:23 localhost kernel: Stack: c029d18e c01d7570 cc52c064 00000018
00000000 00000001 c0103c8e 00000000 
Apr 27 17:05:23 localhost kernel:        cc52c004 cc52c004 cc52bfd0 00000000
c0103e13 00000000 cc52c004 000016b6 
Apr 27 17:05:23 localhost kernel:        cc52a000 cc503b00 00013296 c02ce3c2
cc52bfd0 c029ea34 c9a1caf8 00000000 
Apr 27 17:05:23 localhost kernel: Call Trace:
Apr 27 17:05:23 localhost kernel:  [acpi_rs_list_to_byte_stream+91/247]
acpi_rs_list_to_byte_stream+0x5b/0xf7
Apr 27 17:05:23 localhost kernel:  [show_stack+130/151] show_stack+0x82/0x97
Apr 27 17:05:23 localhost kernel:  [show_registers+336/436]
show_registers+0x150/0x1b4
Apr 27 17:05:23 localhost kernel:  [die+252/396] die+0xfc/0x18c
Apr 27 17:05:23 localhost kernel:  [printk+23/27] printk+0x17/0x1b
Apr 27 17:05:23 localhost kernel:  [do_page_fault+561/1480]
do_page_fault+0x231/0x5c8
Apr 27 17:05:23 localhost kernel:  [update_process_times+70/82]
update_process_times+0x46/0x52
Apr 27 17:05:23 localhost kernel:  [timer_interrupt+298/313]
timer_interrupt+0x12a/0x139
Apr 27 17:05:23 localhost kernel:  [copy_to_user+62/78] copy_to_user+0x3e/0x4e
Apr 27 17:05:23 localhost kernel:  [sys_gettimeofday+59/127]
sys_gettimeofday+0x3b/0x7f
Apr 27 17:05:23 localhost kernel:  [do_page_fault+0/1480] do_page_fault+0x0/0x5c8
Apr 27 17:05:23 localhost kernel:  [error_code+43/48] error_code+0x2b/0x30
Apr 27 17:05:23 localhost kernel: Code: c3 e8 f3 96 18 00 eb e7 55 57 56 53 83
ec 08 8b 5c 24 20 89 df 89 de 81 e7 00 e0 ff ff 8d af fd 1f 00 00 39 fe 76 43 39
ee 73 3f <8b> 1e 83 c6 04 89 1c 24 e8 95 4d 02 00 85 c0 74 e7 89 5c 24 04

Thanks in advance,
Jorge

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