Distribution: home-rolled Hardware Environment: VIA Technologies, In IEEE 1394 Host Contr (rev 70). Software Environment: module-init-tools version 0.9.14 Problem Description: ieee1394: received packet: 01e87fa0 c9007800 ffff0080 ed76979b ohci1394_0: IntEvent: 00000080 Debug: sleeping function called from invalid context at kernel/sched.c:1736 in_atomic():1, irqs_disabled():0 Call Trace: [<c011ff3b>] __might_sleep+0xab/0xf0 [<c011ed1f>] wait_for_completion+0x1f/0xe0 [<c012c236>] group_send_sig_info+0x1b6/0x3c0 [<c012c61b>] kill_proc_info+0x5b/0x60 [<d0bbd5c5>] nodemgr_remove_host+0x55/0x90 [ieee1394] [<d0bb8f55>] highlevel_remove_host+0x75/0x90 [ieee1394] [<d0b5052e>] ohci1394_pci_remove+0x3e/0x230 [ohci1394] [<c0231c09>] pci_device_remove+0x39/0x40 [<c0288810>] device_release_driver+0x60/0x70 [<c0288842>] driver_detach+0x22/0x40 [<c0288ae5>] bus_remove_driver+0x55/0x90 [<c0288efa>] driver_unregister+0x1a/0x42 [<c0231dc7>] pci_unregister_driver+0x17/0x30 [<d0b509e2>] ohci1394_cleanup+0x12/0x14 [ohci1394] [<c01374a7>] sys_delete_module+0x127/0x1a0 [<c014f217>] sys_munmap+0x57/0x80 [<c010a36f>] syscall_call+0x7/0xb bad: scheduling while atomic! Call Trace: [<c011ea2d>] schedule+0x56d/0x580 [<c010a36f>] syscall_call+0x7/0xb [<c010b0fe>] dump_stack+0x1e/0x20 [<c011ff3b>] __might_sleep+0xab/0xf0 [<c011ed88>] wait_for_completion+0x88/0xe0 [<c011ea90>] default_wake_function+0x0/0x30 [<c011ea90>] default_wake_function+0x0/0x30 [<c012c61b>] kill_proc_info+0x5b/0x60 [<d0bbd5c5>] nodemgr_remove_host+0x55/0x90 [ieee1394] [<d0bb8f55>] highlevel_remove_host+0x75/0x90 [ieee1394] [<d0b5052e>] ohci1394_pci_remove+0x3e/0x230 [ohci1394] [<c0231c09>] pci_device_remove+0x39/0x40 [<c0288810>] device_release_driver+0x60/0x70 [<c0288842>] driver_detach+0x22/0x40 [<c0288ae5>] bus_remove_driver+0x55/0x90 [<c0288efa>] driver_unregister+0x1a/0x42 [<c0231dc7>] pci_unregister_driver+0x17/0x30 [<d0b509e2>] ohci1394_cleanup+0x12/0x14 [ohci1394] [<c01374a7>] sys_delete_module+0x127/0x1a0 [<c014f217>] sys_munmap+0x57/0x80 [<c010a36f>] syscall_call+0x7/0xb ieee1394: NodeMgr: Exiting thread bad: scheduling while atomic! Call Trace: [<c011ea2d>] schedule+0x56d/0x580 [<c011eaba>] default_wake_function+0x2a/0x30 [<c011ed88>] wait_for_completion+0x88/0xe0 [<c011ea90>] default_wake_function+0x0/0x30 [<c011ea90>] default_wake_function+0x0/0x30 [<c0131b97>] queue_work+0x97/0xb0 [<c0131ae9>] call_usermodehelper+0xa9/0xc0 [<c01319e0>] __call_usermodehelper+0x0/0x60 [<d0bbc76f>] nodemgr_hotplug+0x1af/0x1f0 [ieee1394] [<c022743d>] kset_hotplug+0x20d/0x270 [<c0227897>] kobject_del+0x67/0x70 [<c02877e1>] __crc_pnp_add_card_device+0x5/0x34 [<c0287824>] device_unregister+0x14/0x20 [<d0bbb4f2>] nodemgr_remove_node_uds+0x22/0x40 [ieee1394] [<d0bbb528>] nodemgr_remove_ne+0x18/0x70 [ieee1394] [<d0bbb5a3>] nodemgr_remove_host_dev+0x23/0x90 [ieee1394] [<d0bbd5cd>] nodemgr_remove_host+0x5d/0x90 [ieee1394] [<d0bb8f55>] highlevel_remove_host+0x75/0x90 [ieee1394] [<d0b5052e>] ohci1394_pci_remove+0x3e/0x230 [ohci1394] [<c0231c09>] pci_device_remove+0x39/0x40 [<c0288810>] device_release_driver+0x60/0x70 [<c0288842>] driver_detach+0x22/0x40 [<c0288ae5>] bus_remove_driver+0x55/0x90 [<c0288efa>] driver_unregister+0x1a/0x42 [<c0231dc7>] pci_unregister_driver+0x17/0x30 [<d0b509e2>] ohci1394_cleanup+0x12/0x14 [ohci1394] [<c01374a7>] sys_delete_module+0x127/0x1a0 [<c014f217>] sys_munmap+0x57/0x80 [<c010a36f>] syscall_call+0x7/0xb Device 'fw-host0' does not have a release() function, it is broken and must be f ixed. Badness in device_release at drivers/base/core.c:87 Call Trace: [<c0287431>] device_release+0x71/0x80 [<c0227985>] kobject_cleanup+0x75/0x80 [<d0bb8f55>] highlevel_remove_host+0x75/0x90 [ieee1394] [<d0b5052e>] ohci1394_pci_remove+0x3e/0x230 [ohci1394] [<c0231c09>] pci_device_remove+0x39/0x40 [<c0288810>] device_release_driver+0x60/0x70 [<c0288842>] driver_detach+0x22/0x40 [<c0288ae5>] bus_remove_driver+0x55/0x90 [<c0288efa>] driver_unregister+0x1a/0x42 [<c0231dc7>] pci_unregister_driver+0x17/0x30 [<d0b509e2>] ohci1394_cleanup+0x12/0x14 [ohci1394] [<c01374a7>] sys_delete_module+0x127/0x1a0 [<c014f217>] sys_munmap+0x57/0x80 [<c010a36f>] syscall_call+0x7/0xb ohci1394_0: Soft reset finished ohci1394_0: Freeing dma_rcv_ctx 0 ohci1394_0: Freeing dma_rcv_ctx 0 ohci1394_0: Freeing dma_trm_ctx 0 ohci1394_0: Freeing dma_trm_ctx 1 ohci1394_0: Freeing dma_rcv_ctx 0 Steps to reproduce: (not known to be reproducible) load dv1394, raw1394, chmod 666 /dev/raw1394 start dvgrab from Canon GL2 camera, then simutaneously start read from /dev/ieee1394/dv/host0/NTSC/in killall dvgrab and the reading process try to read again; hangs on read() rmmod raw1394, rmmod dv1394; rmmod ohci1394