[Bugme-janitors] [Bug 23172] New: BUG: unable to handle kernel NULL pointer dereference at (null)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=23172

           Summary: BUG: unable to handle kernel NULL pointer dereference
                    at (null)
           Product: Other
           Version: 2.5
    Kernel Version: 2.6.35, 2.6.36
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: blocking
          Priority: P1
         Component: Other
        AssignedTo: other_other at kernel-bugs.osdl.org
        ReportedBy: jameztcc at gmail.com
        Regression: No


Managed to get a dmesg from 2.6.36 due to time constraint. Not observed in
2.6.34.

Reproduced by building kernel + glxgears + other applications. Previously
always reproducible when launching (powering up) a virtual machine from VM.
Suspect high disk I/O related, but not sure. Screen, keyboard and mouse
freezes. Only able to SSH in from remote pc.


full dmesg here: http://pastebin.com/qbPC9MrT

[  431.047729] BUG: unable to handle kernel NULL pointer dereference at (null)
[  431.047736] IP: [<(null)>] (null)
[  431.047740] *pdpt = 00000000222ea001 *pde = 0000000000000000 
[  431.047743] Oops: 0010 [#1] PREEMPT SMP 
[  431.047747] last sysfs file:
/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
[  431.047751] Modules linked in: wacom ipt_MASQUERADE iptable_nat nf_nat
nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables vmnet vmblock
vsock vmci vmmon coretemp firewire_sbp2 joydev arc4 ecb psmouse serio_raw
firewire_ohci firewire_core crc_itu_t snd_hda_codec_analog pcmcia snd_hda_intel
snd_hda_codec ohci1394 snd_hwdep ieee1394 yenta_socket pcmcia_rsrc pcmcia_core
snd_pcm_oss snd_mixer_oss iwl3945 snd_pcm pcspkr snd_seq_dummy iwlcore
snd_seq_oss mac80211 tg3 libphy cfg80211 snd_seq_midi tpm_infineon snd_rawmidi
snd_seq_midi_event snd_seq snd_timer snd_seq_device btusb snd soundcore
snd_page_alloc evdev
[  431.047789] 
[  431.047793] Pid: 10803, comm: glxgears Not tainted 2.6.36.11182010-2 #3
30C0/HP Compaq 6510b (KS284PA#UUF)
[  431.047796] EIP: 0060:[<00000000>] EFLAGS: 00210206 CPU: 0
[  431.047799] EIP is at 0x0
[  431.047801] EAX: f6c0b800 EBX: 00000000 ECX: f75fc014 EDX: f75fc014
[  431.047803] ESI: 00000000 EDI: 00000002 EBP: dd20feac ESP: dd20fe44
[  431.047806]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[  431.047808] Process glxgears (pid: 10803, ti=dd20e000 task=e2073440
task.ti=dd20e000)
[  431.047810] Stack:
[  431.047811]  c03188c4 c02fa66c 00000002 f6c0b800 f75fc000 f6c0b814 f8489898
00000000
[  431.047816] <0> f5d90a00 00000000 00000000 00000001 00000002 00000018
c0671974 0000004b
[  431.047821] <0> dd0e7940 c02ecbaf dd20feac 00000001 bfeb6744 4018644b
f6c0b800 c02fa2ed
[  431.047826] Call Trace:
[  431.047832]  [<c03188c4>] ? intel_ring_advance+0xe/0xf
[  431.047836]  [<c02fa66c>] ? i915_cmdbuffer+0x37f/0x416
[  431.047843]  [<c02ecbaf>] ? drm_ioctl+0x245/0x2e5
[  431.047845]  [<c02fa2ed>] ? i915_cmdbuffer+0x0/0x416
[  431.047850]  [<c01864a4>] ? do_wp_page+0x6e3/0x77f
[  431.047853]  [<c0187eb2>] ? handle_mm_fault+0x9d7/0xa72
[  431.047856]  [<c02ec96a>] ? drm_ioctl+0x0/0x2e5
[  431.047859]  [<c01ad95a>] ? do_vfs_ioctl+0x489/0x4cb
[  431.047863]  [<c049bb6d>] ? do_page_fault+0x223/0x286
[  431.047865]  [<c01ad9dd>] ? sys_ioctl+0x41/0x58
[  431.047869]  [<c0102893>] ? sysenter_do_call+0x12/0x22
[  431.047871] Code:  Bad EIP value.
[  431.047874] EIP: [<00000000>] 0x0 SS:ESP 0068:dd20fe44
[  431.047880] CR2: 0000000000000000
[  431.047882] ---[ end trace 8526e8579e498514 ]---

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