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BUG: unable to handle kernel paging request at [xxxx]

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http://forums.fedoraforum.org – I'm encountering this error. What is it? [Note: I'm typing this entire thing out. It probably isn't 100% verbatim. And I am using an older version of the kernel because 2.6.30.9.96 was not behaving either.] Code: BUG: unable to handle kernel paging request at efd86f5c *pde = 00000000 last sysfs file: /sys/devices/virtual/vc/vcsa6/dev Modules linked in: sco bridge stp llc bnep l2cap bluetooth autofs4 nls_utf8 cifs sunrpc ipv6 uinput snd_emu10k1_synth snd_emux_synth snd_seq_virimidi snd_seq_midi_event snd_seq_mid_emul snd_seq ppdev snd_emu10k1 snd_via82xx snd_ac97_codec ac97_bus snd_pcm snd_mpu401_uart snd_timer snd_rawmidi snd_page_alloc snd_util_mem snd_seq_device snd_hwdep via686a hwmon joydev snd pcspkr e1000 i2c_viapro emu10k1_gp gameport parport_pc soundcore parport ata_generic pata_acpi pata_via radeon drm i2c_algo_bit i2c_core [last unloaded: scsi_wait_scan] Pid: 1990, com: java Not tainted (2.6.30.8-64.fc11.i586 #1) MS-6330 EIP: 0060:[<c0423fff>] EFLAGS 00010086 CPU: 0 EIP is at dequeue_entity+0x1f1/0x1fc EAX: f1099c5c EBX: ffffffff ECX: feced300 EDX: 000026d7 ESI: c1407b18 EDI: c1407ae0 EBP: d5a29d70 ESP: d5a29d4c DS: 007b ES: 007b FC: 00d8 GS: 0033 SS: 0068 Process java (pid: 1990, ti = d5a28000 task=df3d3340 task.ti=d5a28000 Stack:  f1099c5c 000026d7 fcf8c733 ffffffff feced300 ffffffff c1407b18 df3d336c  c1407ae0 d5a29d84 c042485d c073a384 df3d3340 00000000 d5a29db0 c0420d29  00000001 c1407ae0 dd163fc8 00000277 00000000 00000000 c1407ae0 c099b1dc Call Trace:  [<c042485d>] ? dequeue_task_fair+0x21/0x61  [<c0420d29>] ? dequeue_task+0x125/0x134  [<c0420d86>] ? deactivate_task+0x24/0x2a  [<c072d164>] ? __schedule+0x13f/0x7b0  [<c072d7e2>] ? schedule+0xd/0x1c  [<c044ca8a>] ? futex_wait+0x188/0x340  [<c0484341>] ? file_accessed+0x19/0x1b  [<c04863d6>] ? generic_file_aio_read+0x4b5/0x4ef  [<c0485de1>] ? generic_file_aio_write+0x69/0xb1  [<c0429b21>] ? default_wake_function+0x0/0x12  [<c044dc89>] ? do_futex+0x6f/0x62b  [<c04411dd>] ? autoremove_wake_function+0x0/0x34  [<c044e316>] ? sys_futex+0x31/0xe3  [<c040a40d>] ? syscall_trace_enter+0xdc+0xf0  [<c0403515>] ?syscall+call+0x7/0xb Code: 89 c1 89 d3 2b 4d dc 1b 5d e0 89 4d ec 83 fb 00 89 5d f0 7c 0d 7f 05 83 f9 00 76 06 89 45 dc 89 55 e0 8b 45 dc 8b 55 e0 89 46 14 <89> 56 18 83 c4 18 5b 5e 5f 5d ce 55 89 e5 89 e5 57 56 53 83 ec 2c 0f EIP: [<c0423fff>] dequeue_entity+0x1f1/0x1fc SS:ESP:0068:d5a29d4c CR2: 00000000efd86f5c ---[end of trace 2e4465db50ae58a0 ]--- (HowTos)