BUG: warning at kernel/irq/manage.c:353/free_irq()
8809f324:  [<800633bc>] free_irq+0x12a/0x12f
8809f350:  [<8002405a>] close_one_chan+0xa4/0xaa
8809f360:  [<80024081>] close_chan+0x21/0x2f
8809f378:  [<800256a2>] close_lines+0x29/0x34
8809f38c:  [<800239f2>] console_exit+0x24/0x26
8809f398:  [<8001bc43>] do_uml_exitcalls+0x12/0x1f
8809f3a0:  [<8001c6a2>] uml_cleanup+0xf/0x11
8809f3a4:  [<8001c6c2>] machine_power_off+0x5/0x19
8809f3a8:  [<8001f5ba>] panic_exit+0x46/0x4c
8809f3b4:  [<800519a0>] notifier_call_chain+0x2a/0x40
8809f3d0:  [<8003ef57>] panic+0x70/0x102
8809f3e8:  [<8001eb96>] segv+0x29d/0x2cb
8809f434:  [<80029a69>] ubd_handler+0xb8/0xba
8809f4b4:  [<8001e8ba>] segv_handler+0xa5/0xe4
8809f4d8:  [<8001e815>] segv_handler+0x0/0xe4
8809f4dc:  [<80034abc>] sig_handler_common_skas+0x94/0xe5
8809f500:  [<80030bdd>] sig_handler+0x5d/0x68
8809f518:  [<8039a828>] __restore+0x0/0x8
8809f558:  [<8024f681>] as_move_to_dispatch+0xf/0x14e
8809f584:  [<8003a8d6>] try_to_wake_up+0x90/0xa5
8809f5a8:  [<80058df6>] autoremove_wake_function+0x2f/0x57
8809f5b4:  [<8007f636>] kmem_cache_free+0x54/0xdc
8809f5bc:  [<8004c593>] lock_timer_base+0x2a/0x4f
8809f5d0:  [<8004c62d>] __mod_timer+0x75/0xb3
8809f5dc:  [<8024f19d>] as_can_break_anticipation+0x140/0x182
8809f5f0:  [<8024eb7c>] as_antic_waitnext+0x29/0x68
8809f5fc:  [<8024f206>] as_can_anticipate+0x27/0x37
8809f608:  [<8024fab4>] as_dispatch_request+0x2f4/0x378
8809f614:  [<80261c6c>] __add_entropy_words+0x74/0x174
8809f630:  [<8024594b>] elv_next_request+0x45/0x156
8809f640:  [<8039a721>] __libc_longjmp+0x2d/0x4c
8809f658:  [<800347c6>] switch_threads+0x61/0x6e
8809f680:  [<8003479e>] switch_threads+0x39/0x6e
8809f68c:  [<8001a26b>] reactivate_fd+0x6d/0x87
8809f6ac:  [<80029a69>] ubd_handler+0xb8/0xba
8809f6bc:  [<80022ea6>] maybe_map+0x36/0xc2
8809f6ec:  [<80022f82>] do_op_one_page+0x50/0x54
8809f6fc:  [<80022ffb>] do_buffer_op+0x75/0x152
8809f70c:  [<8002329e>] copy_chunk_to_user+0x0/0x37
8809f718:  [<8002329e>] copy_chunk_to_user+0x0/0x37
8809f738:  [<800327ac>] setjmp_wrapper+0x5c/0x60
8809f75c:  [<80032778>] setjmp_wrapper+0x28/0x60
8809f784:  [<80030fc0>] set_signals+0x1c/0x28
8809f790:  [<80030bc4>] sig_handler+0x44/0x68
8809f7a8:  [<8006ad9b>] test_clear_page_writeback+0x94/0xdf
8809f7c8:  [<8007f636>] kmem_cache_free+0x54/0xdc
8809f818:  [<8024f909>] as_dispatch_request+0x149/0x378
8809f824:  [<80261c6c>] __add_entropy_words+0x74/0x174
8809f840:  [<8024594b>] elv_next_request+0x45/0x156
8809f850:  [<80068274>] mempool_free+0x83/0x93
8809f860:  [<8002a9de>] do_ubd_request+0x2b/0xbd
8809f87c:  [<8001a1ce>] find_irq_by_fd+0x53/0x83
8809f884:  [<80030b12>] maybe_sigio_broken+0x1a/0x58
8809f89c:  [<8001a26b>] reactivate_fd+0x6d/0x87
8809f8bc:  [<80029a69>] ubd_handler+0xb8/0xba
8809f900:  [<802480a7>] blk_remove_plug+0x39/0x6b
8809f914:  [<80029a70>] ubd_intr+0x5/0xb
8809f918:  [<80062d3a>] handle_IRQ_event+0x2d/0x69
8809f938:  [<80062dda>] __do_IRQ+0x64/0xc2
8809f954:  [<80019e42>] sigio_handler+0x0/0x6c
8809f95c:  [<8001a3a5>] do_IRQ+0x30/0x3e
8809f968:  [<80019e96>] sigio_handler+0x54/0x6c
8809f97c:  [<80034abc>] sig_handler_common_skas+0x94/0xe5
8809f9a0:  [<80030bdd>] sig_handler+0x5d/0x68
8809f9b8:  [<8039a828>] __restore+0x0/0x8
8809f9f8:  [<803afffd>] __libc_waitpid+0x1d/0x60
8809fa18:  [<8003b23d>] default_wake_function+0x0/0x12
8809fa34:  [<8003b23d>] default_wake_function+0x0/0x12
8809fa50:  [<8003b23d>] default_wake_function+0x0/0x12
8809fa64:  [<80022f82>] do_op_one_page+0x50/0x54
8809fa74:  [<80022ffb>] do_buffer_op+0x75/0x152
8809fa84:  [<8002329e>] copy_chunk_to_user+0x0/0x37
8809fa90:  [<8002329e>] copy_chunk_to_user+0x0/0x37
8809fab0:  [<800327ac>] setjmp_wrapper+0x5c/0x60
8809fad4:  [<80032778>] setjmp_wrapper+0x28/0x60
8809faec:  [<80058c6e>] remove_wait_queue+0x3d/0x49
8809fafc:  [<800443ac>] do_wait+0x222/0xae5
8809fb2c:  [<8003479e>] switch_threads+0x39/0x6e
8809fb70:  [<8002311f>] buffer_op+0x47/0x77
8809fb74:  [<80022f86>] do_buffer_op+0x0/0x152
8809fb84:  [<8002329e>] copy_chunk_to_user+0x0/0x37
8809fba0:  [<80023399>] copy_to_user_skas+0xc4/0x104
8809fbb0:  [<8002329e>] copy_chunk_to_user+0x0/0x37
8809fbdc:  [<80098b62>] sys_poll+0x4a/0x59
8809fbf4:  [<80022bed>] handle_syscall+0x12d/0x138
8809fc38:  [<8001d7ab>] timer_irq+0xd2/0x153
8809fc5c:  [<80032eed>] move_registers+0x4c/0x66
8809fc78:  [<80032fb3>] restore_registers+0x40/0x6c
8809fc98:  [<80034097>] userspace+0xcc/0x21e
8809fcf4:  [<80022808>] fork_handler+0xef/0xff
8809fd20:  [<8039a828>] __restore+0x0/0x8
8809fd60:  [<8039aa81>] kill+0x11/0x20

BUG: warning at kernel/irq/manage.c:353/free_irq()
8809f324:  [<800633bc>] free_irq+0x12a/0x12f
8809f350:  [<8002403f>] close_one_chan+0x89/0xaa
8809f360:  [<80024081>] close_chan+0x21/0x2f
8809f378:  [<800256a2>] close_lines+0x29/0x34
8809f38c:  [<800239f2>] console_exit+0x24/0x26
8809f398:  [<8001bc43>] do_uml_exitcalls+0x12/0x1f
8809f3a0:  [<8001c6a2>] uml_cleanup+0xf/0x11
8809f3a4:  [<8001c6c2>] machine_power_off+0x5/0x19
8809f3a8:  [<8001f5ba>] panic_exit+0x46/0x4c
8809f3b4:  [<800519a0>] notifier_call_chain+0x2a/0x40
8809f3d0:  [<8003ef57>] panic+0x70/0x102
8809f3e8:  [<8001eb96>] segv+0x29d/0x2cb
8809f434:  [<80029a69>] ubd_handler+0xb8/0xba
8809f4b4:  [<8001e8ba>] segv_handler+0xa5/0xe4
8809f4d8:  [<8001e815>] segv_handler+0x0/0xe4
8809f4dc:  [<80034abc>] sig_handler_common_skas+0x94/0xe5
8809f500:  [<80030bdd>] sig_handler+0x5d/0x68
8809f518:  [<8039a828>] __restore+0x0/0x8
8809f558:  [<8024f681>] as_move_to_dispatch+0xf/0x14e
8809f584:  [<8003a8d6>] try_to_wake_up+0x90/0xa5
8809f5a8:  [<80058df6>] autoremove_wake_function+0x2f/0x57
8809f5b4:  [<8007f636>] kmem_cache_free+0x54/0xdc
8809f5bc:  [<8004c593>] lock_timer_base+0x2a/0x4f
8809f5d0:  [<8004c62d>] __mod_timer+0x75/0xb3
8809f5dc:  [<8024f19d>] as_can_break_anticipation+0x140/0x182
8809f5f0:  [<8024eb7c>] as_antic_waitnext+0x29/0x68
8809f5fc:  [<8024f206>] as_can_anticipate+0x27/0x37
8809f608:  [<8024fab4>] as_dispatch_request+0x2f4/0x378
8809f614:  [<80261c6c>] __add_entropy_words+0x74/0x174
8809f630:  [<8024594b>] elv_next_request+0x45/0x156
8809f640:  [<8039a721>] __libc_longjmp+0x2d/0x4c
8809f658:  [<800347c6>] switch_threads+0x61/0x6e
8809f680:  [<8003479e>] switch_threads+0x39/0x6e
8809f68c:  [<8001a26b>] reactivate_fd+0x6d/0x87
8809f6ac:  [<80029a69>] ubd_handler+0xb8/0xba
8809f6bc:  [<80022ea6>] maybe_map+0x36/0xc2
8809f6ec:  [<80022f82>] do_op_one_page+0x50/0x54
8809f6fc:  [<80022ffb>] do_buffer_op+0x75/0x152
8809f70c:  [<8002329e>] copy_chunk_to_user+0x0/0x37
8809f718:  [<8002329e>] copy_chunk_to_user+0x0/0x37
8809f738:  [<800327ac>] setjmp_wrapper+0x5c/0x60
8809f75c:  [<80032778>] setjmp_wrapper+0x28/0x60
8809f784:  [<80030fc0>] set_signals+0x1c/0x28
8809f790:  [<80030bc4>] sig_handler+0x44/0x68
8809f7a8:  [<8006ad9b>] test_clear_page_writeback+0x94/0xdf
8809f7c8:  [<8007f636>] kmem_cache_free+0x54/0xdc
8809f818:  [<8024f909>] as_dispatch_request+0x149/0x378
8809f824:  [<80261c6c>] __add_entropy_words+0x74/0x174
8809f840:  [<8024594b>] elv_next_request+0x45/0x156
8809f850:  [<80068274>] mempool_free+0x83/0x93
8809f860:  [<8002a9de>] do_ubd_request+0x2b/0xbd
8809f87c:  [<8001a1ce>] find_irq_by_fd+0x53/0x83
8809f884:  [<80030b12>] maybe_sigio_broken+0x1a/0x58
8809f89c:  [<8001a26b>] reactivate_fd+0x6d/0x87
8809f8bc:  [<80029a69>] ubd_handler+0xb8/0xba
8809f900:  [<802480a7>] blk_remove_plug+0x39/0x6b
8809f914:  [<80029a70>] ubd_intr+0x5/0xb
8809f918:  [<80062d3a>] handle_IRQ_event+0x2d/0x69
8809f938:  [<80062dda>] __do_IRQ+0x64/0xc2
8809f954:  [<80019e42>] sigio_handler+0x0/0x6c
8809f95c:  [<8001a3a5>] do_IRQ+0x30/0x3e
8809f968:  [<80019e96>] sigio_handler+0x54/0x6c
8809f97c:  [<80034abc>] sig_handler_common_skas+0x94/0xe5
8809f9a0:  [<80030bdd>] sig_handler+0x5d/0x68
8809f9b8:  [<8039a828>] __restore+0x0/0x8
8809f9f8:  [<803afffd>] __libc_waitpid+0x1d/0x60
8809fa18:  [<8003b23d>] default_wake_function+0x0/0x12
8809fa34:  [<8003b23d>] default_wake_function+0x0/0x12
8809fa50:  [<8003b23d>] default_wake_function+0x0/0x12
8809fa64:  [<80022f82>] do_op_one_page+0x50/0x54
8809fa74:  [<80022ffb>] do_buffer_op+0x75/0x152
8809fa84:  [<8002329e>] copy_chunk_to_user+0x0/0x37
8809fa90:  [<8002329e>] copy_chunk_to_user+0x0/0x37
8809fab0:  [<800327ac>] setjmp_wrapper+0x5c/0x60
8809fad4:  [<80032778>] setjmp_wrapper+0x28/0x60
8809faec:  [<80058c6e>] remove_wait_queue+0x3d/0x49
8809fafc:  [<800443ac>] do_wait+0x222/0xae5
8809fb2c:  [<8003479e>] switch_threads+0x39/0x6e
8809fb70:  [<8002311f>] buffer_op+0x47/0x77
8809fb74:  [<80022f86>] do_buffer_op+0x0/0x152
8809fb84:  [<8002329e>] copy_chunk_to_user+0x0/0x37
8809fba0:  [<80023399>] copy_to_user_skas+0xc4/0x104
8809fbb0:  [<8002329e>] copy_chunk_to_user+0x0/0x37
8809fbdc:  [<80098b62>] sys_poll+0x4a/0x59
8809fbf4:  [<80022bed>] handle_syscall+0x12d/0x138
8809fc38:  [<8001d7ab>] timer_irq+0xd2/0x153
8809fc5c:  [<80032eed>] move_registers+0x4c/0x66
8809fc78:  [<80032fb3>] restore_registers+0x40/0x6c
8809fc98:  [<80034097>] userspace+0xcc/0x21e
8809fcf4:  [<80022808>] fork_handler+0xef/0xff
8809fd20:  [<8039a828>] __restore+0x0/0x8
8809fd60:  [<8039aa81>] kill+0x11/0x20