abrt version: 2.0.1
architecture:   i686
cmdline:        ro root=UUID=75d777ee-ecff-4925-8718-ddf7c1b3b20b rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=es_ES.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=la-latin1 rhgb quiet
component:      kernel
kernel:         2.6.38.8-32.fc15.i686.PAE
kernel_tainted: 128
os_release:     Fedora release 15 (Lovelock)
package:        kernel
reason:         BUG: unable to handle kernel NULL pointer dereference at 00000022
reported_to:    kerneloops: URL=http://submit.kerneloops.org/submitoops.php
time:           Fri Jul  1 17:00:40 2011

backtrace:
:BUG: unable to handle kernel NULL pointer dereference at 00000022
:IP: [<00000022>] 0x22
:*pdpt = 000000002f5cb001 *pde = 0000000065e7c067 
:Oops: 0010 [#1] SMP 
:last sysfs file: /sys/devices/pci0000:00/0000:00:1d.7/usb2/idVendor
:Modules linked in: nls_utf8 vfat fat usb_storage uas xfs exportfs fuse vboxnetadp vboxnetflt ppdev parport_pc vboxdrv parport sunrpc cpufreq_ondemand acpi_cpufreq mperf ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables arc4 iwlagn iwlcore btusb bluetooth snd_hda_codec_realtek toshiba_bluetooth uvcvideo videodev snd_hda_intel snd_hda_codec microcode snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore mac80211 r852 sm_common nand nand_ids nand_ecc cfg80211 mtd iTCO_wdt i2c_i801 iTCO_vendor_support r8169 joydev snd_page_alloc mii sparse_keymap rfkill ipv6 sdhci_pci sdhci firewire_ohci mmc_core firewire_core crc_itu_t i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
:Pid: 6791, comm: umount Not tainted 2.6.38.8-32.fc15.i686.PAE #1 TOSHIBA Satellite A305/Base Board Product Name
:EIP: 0060:[<00000022>] EFLAGS: 00010206 CPU: 0
:EIP is at 0x22
:EAX: f2def9c0 EBX: 00000022 ECX: 00000010 EDX: c7c0f9f8
:ESI: c7c0f9f8 EDI: 00000000 EBP: efd45d5c ESP: efd45d54
: DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
:Process umount (pid: 6791, ti=efd44000 task=f0a77110 task.ti=efd44000)
:Stack:
: c05be10e f2def9c0 efd45d88 c05c266e ea74ade0 00000000 00000001 01d45d98
: 00000001 02000000 f2def9c0 00000010 04000000 efd45dcc c05c2f3e 00000010
: efd45d9c 00000000 00a15a1e 00000000 00000000 efd45dbc 983908f3 f4b071c4
:Call Trace:
: [<c05be10e>] ? elv_set_request+0x17/0x25
: [<c05c266e>] get_request+0x186/0x21c
: [<c05c2f3e>] get_request_wait+0x2b/0x132
: [<c0435b3a>] ? __might_sleep+0x29/0xe4
: [<c05c307f>] blk_get_request+0x3a/0x63
: [<c06954ac>] scsi_execute+0x26/0x110
: [<c06955ca>] ? scsi_execute_req+0x34/0xad
: [<c069561b>] scsi_execute_req+0x85/0xad
: [<c0691d17>] ioctl_internal_command.constprop.1+0x6f/0x15f
: [<c0691e57>] scsi_set_medium_removal+0x50/0x87
: [<c07e0000>] ? __cpuid+0x11/0x12
: [<c06a2cfb>] sr_lock_door+0x1b/0x1d
: [<c06c1899>] cdrom_release+0x180/0x1e2
: [<c0491f12>] ? __call_rcu+0xd9/0xdf
: [<c0435b3a>] ? __might_sleep+0x29/0xe4
: [<c042f667>] ? should_resched+0xd/0x27
: [<c07e7f79>] ? _cond_resched+0xd/0x21
: [<c06a1df2>] sr_block_release+0x28/0x3f
: [<c0511224>] __blkdev_put+0xa7/0x135
: [<c0511394>] blkdev_put+0xe2/0xe7
: [<c04ef3e7>] kill_block_super+0x5c/0x60
: [<c04ef5be>] deactivate_locked_super+0x1f/0x40
: [<c04eff4f>] deactivate_super+0x2e/0x31
: [<c0501af8>] mntput_no_expire+0xb5/0xb9
: [<c0502396>] sys_umount+0x270/0x297
: [<c04f5402>] ? path_put+0x1a/0x1d
: [<c040969f>] sysenter_do_call+0x12/0x28
:Code:  Bad EIP value.
:EIP: [<00000022>] 0x22 SS:ESP 0068:efd45d54
:CR2: 0000000000000022

comment:
:Se desmonto una unidad usb 
:umount pendrive  of system

event_log:
:2011-07-01-17:02:13> Submitting oops report to http://submit.kerneloops.org/submitoops.php
:2011-07-01-17:02:14  Kernel oops report was uploaded