abrt version: 2.0.1
architecture:   i686
cmdline:        ro root=/dev/mapper/mainvolume-rootvol rd_LVM_LV=mainvolume/rootvol rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us
comment:        Unplugging USB drive at the time
component:      kernel
kernel:         2.6.38.7-30.fc15.i686.PAE
kernel_tainted: 640
os_release:     Fedora release 15 (Lovelock)
package:        kernel
reason:         BUG: sleeping function called from invalid context at arch/x86/mm/fault.c:1087
time:           Sun Jun 12 13:50:32 2011

backtrace:
:BUG: sleeping function called from invalid context at arch/x86/mm/fault.c:1087
:in_atomic(): 0, irqs_disabled(): 1, pid: 3180, name: umount
:Pid: 3180, comm: umount Tainted: G        W   2.6.38.7-30.fc15.i686.PAE #1
:Call Trace:
: [<c07e15ee>] ? printk+0x2d/0x2f
: [<c0435c02>] __might_sleep+0xdd/0xe4
: [<c07ebed2>] do_page_fault+0x179/0x30c
: [<c0469c74>] ? arch_local_irq_save+0x12/0x17
: [<c07e8ff3>] ? _raw_spin_unlock_irqrestore+0x13/0x15
: [<c07e8ff3>] ? _raw_spin_unlock_irqrestore+0x13/0x15
: [<c0442d1d>] ? console_unlock+0x153/0x15a
: [<c07ebd59>] ? do_page_fault+0x0/0x30c
: [<c07e9adf>] error_code+0x67/0x6c
: [<c05e4975>] ? __percpu_counter_add+0xe/0x6d
: [<c04b93b7>] __add_bdi_stat+0x33/0x37
: [<c04b9bad>] account_page_dirtied+0x52/0x70
: [<c050c070>] __set_page_dirty+0x56/0x8a
: [<c050c11b>] mark_buffer_dirty+0x77/0x7a
: [<c05624b8>] ext4_commit_super+0x16c/0x1b7
: [<c0562653>] save_error_info+0x1c/0x1f
: [<c05638e3>] __ext4_abort+0x22/0xd5
: [<c04590f1>] ? autoremove_wake_function+0x0/0x39
: [<c0563a2f>] ext4_put_super+0x99/0x2c4
: [<c04ff6e1>] ? evict_inodes+0xb1/0xb9
: [<c04ef34b>] generic_shutdown_super+0x58/0xb8
: [<c04ef3cd>] kill_block_super+0x22/0x60
: [<c04ef5de>] deactivate_locked_super+0x1f/0x40
: [<c04eff6f>] deactivate_super+0x2e/0x31
: [<c0501b1c>] mntput_no_expire+0xb5/0xb9
: [<c05023ba>] sys_umount+0x270/0x297
: [<c04f5422>] ? path_put+0x1a/0x1d
: [<c040969f>] sysenter_do_call+0x12/0x28