On 05/19/14 16:08, Paolo Bonzini wrote: > 1) dangling pointers: scsi_put_command calls cancel_delayed_work(), but > that doesn't mean that the scmd_eh_abort_handler couldn't be already > running. If the scmd_eh_abort_handler starts while the softirq handler > is calling scsi_put_command (e.g. scsi_finish_command -> > scsi_io_completion -> scsi_end_request -> scsi_next_command), the > pointer to the Scsi_Cmnd* becomes invalid in the middle of the abort > handler.
Hannes, can you clarify why a cancel_delayed_work() statement was added in scsi_put_command() ? How can scsi_put_command() get invoked after the SCSI timeout handler queued &scmd->abort_work and before the function associated with that work struct (scmd_eh_abort_handler()) is called ? Thanks, Bart. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
