abrt version: 2.0.3
architecture:   x86_64
cmdline:        ro root=/dev/mapper/vg_roddur-lv_root rd_LVM_LV=vg_roddur/lv_root rd_LVM_LV=vg_roddur/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us rhgb quiet
component:      kernel
kernel:         2.6.38.8-32.fc15.x86_64
kernel_tainted: 128
kernel_tainted_long: Kernel has oopsed before.
os_release:     Fedora release 15 (Lovelock)
package:        kernel
reason:         BUG: unable to handle kernel paging request at ffff88014a7d2180
time:           Fri Jul  8 01:47:27 2011

backtrace:
:BUG: unable to handle kernel paging request at ffff88014a7d2180
:IP: [<ffff88014a7d2180>] 0xffff88014a7d2180
:PGD 1a04063 PUD 977db067 PMD 800000014a6001e3 
:Oops: 0011 [#1] SMP 
:last sysfs file: /sys/devices/pci0000:00/0000:00:1c.3/0000:05:00.0/usb3/3-3/3-3.4/power/autosuspend
:CPU 3 
:Modules linked in: ses enclosure vboxnetadp vboxnetflt vboxdrv nls_utf8 udf crc_itu_t ppp_deflate zlib_deflate ppp_async crc_ccitt ppp_generic slhc hidp fuse sunrpc cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables rfcomm sco bnep l2cap usb_storage uas option usb_wwan usbserial snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel arc4 snd_hda_codec snd_hwdep iwlagn iwlcore snd_seq snd_seq_device mac80211 snd_pcm dell_wmi sparse_keymap dell_laptop dcdbas joydev btusb uvcvideo r8169 intel_ips microcode bluetooth cfg80211 snd_timer i2c_i801 mii videodev v4l2_compat_ioctl32 xhci_hcd iTCO_wdt iTCO_vendor_support snd rfkill soundcore snd_page_alloc wmi ipv6 nouveau i915 ttm drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: vboxdrv]
:Pid: 13000, comm: umount Not tainted 2.6.38.8-32.fc15.x86_64 #1 Dell Inc. XPS L501X  /00CKNG
:RIP: 0010:[<ffff88014a7d2180>]  [<ffff88014a7d2180>] 0xffff88014a7d2180
:RSP: 0018:ffff88012fe57a90  EFLAGS: 00010082
:RAX: 0000000000000000 RBX: ffff88014c3bb680 RCX: 0000000000000010
:RDX: ffff88014a7d2180 RSI: 0000000000000000 RDI: ffff88014c3bb680
:RBP: ffff88012fe57a98 R08: 0000000000000000 R09: ffff880037a328a0
:R10: ffffc9000060b000 R11: 0000000000000000 R12: ffff88012fe57b40
:R13: 0000000000000000 R14: ffff880037a328a0 R15: 0000000000000001
:FS:  00007f3d01e2f820(0000) GS:ffff880097180000(0000) knlGS:0000000000000000
:CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
:CR2: ffff88014a7d2180 CR3: 000000012ff68000 CR4: 00000000000006e0
:DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
:DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
:Process umount (pid: 13000, threadinfo ffff88012fe56000, task ffff88014bcc4590)
:Stack:
: ffffffff81211493 ffff88012fe57af8 ffffffff81215ba2 ffff88012fe57ac8
: 0000000000000000 00000010810f13cf ffff88012ff31078 ffff8800378c72e0
: ffff88014c3bb680 ffff88012fe57b40 0000000000000000 ffff880037a328a0
:Call Trace:
: [<ffffffff81211493>] ? elv_may_queue+0x1d/0x1f
: [<ffffffff81215ba2>] get_request+0x33/0x262
: [<ffffffff8121676a>] get_request_wait+0x35/0x193
: [<ffffffff81478f16>] ? do_page_fault+0x33e/0x37a
: [<ffffffff810b07a4>] ? __call_rcu+0x123/0x12c
: [<ffffffff81216907>] blk_get_request+0x3f/0x6e
: [<ffffffff812fc861>] scsi_execute+0x41/0x146
: [<ffffffff812fca02>] scsi_execute_req+0x9c/0xce
: [<ffffffff812f8a9c>] ioctl_internal_command.constprop.1+0x6b/0x163
: [<ffffffff812f8bed>] scsi_set_medium_removal+0x59/0x94
: [<ffffffff8130b225>] sr_lock_door+0x20/0x22
: [<ffffffff8132c475>] cdrom_release+0x195/0x205
: [<ffffffff810806d9>] ? smp_call_function_many+0x1bd/0x1dc
: [<ffffffff8104127e>] ? should_resched+0xe/0x2d
: [<ffffffff81474408>] ? _cond_resched+0xe/0x22
: [<ffffffff8130a1b9>] sr_block_release+0x30/0x4d
: [<ffffffff81149aa2>] __blkdev_put+0xc6/0x179
: [<ffffffff81149c59>] blkdev_put+0x104/0x10c
: [<ffffffff81122f69>] kill_block_super+0x65/0x6a
: [<ffffffff811231a5>] deactivate_locked_super+0x26/0x4b
: [<ffffffff81123d0e>] deactivate_super+0x37/0x3b
: [<ffffffff8113863c>] mntput_no_expire+0xcc/0xd1
: [<ffffffff81139073>] sys_umount+0x2ac/0x2da
: [<ffffffff81009bc2>] system_call_fastpath+0x16/0x1b
:Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 68 21 7d 4a 01 88 ff ff 68 21 7d 4a 01 88 ff ff 18 d4 c6 49 01 88 ff ff 
:RIP  [<ffff88014a7d2180>] 0xffff88014a7d2180
: RSP <ffff88012fe57a90>

comment:
:1) mount external hard disk
:2) unmount external hard disk