Re: Core scsi layer crashes in 2.6.8.1

[Alan Cox]

On Mer, 2004-09-29 at 15:11, James Bottomley wrote:
> What was the oops?
> 
> I have a theory that we should be taking a device reference before
> waking up the error handler, otherwise host removal can race with error
> handling.

The sequence I scribbled down from the console was

        Illegal state transition Cancel->Offline
        Badness in scsi_device_set_state
                scsi_device_set_state
                scsi_unjam_host
                scsi_error_handler
 
        badness in kref_get
                kobject_get, get_device, scsi_request_fn
                blk_insert_request, scsi_queue_insert
                scsi_eh_flush_done_q, scsi_unjam_host
                scsi_error_handler
 
        OOPS scsi_device_dev_release
                device_release
                kobject_cleanup
                kobject_release
                kref_put
                scsi_request_fn

Alan

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