http://bugzilla.kernel.org/show_bug.cgi?id=12195 ------- Comment #3 from yanmin_zhang@xxxxxxxxxxxxxxx 2008-12-11 01:05 ------- I instrumented kernel. below is some finding. 1) The disk isn't stable. If we run dd in a loop, sometimes the disk doesn't work, so block request will expire to start a scsi error handling; 2) fussion driver has its own periodic (1 sec) checking in mpt_fault_reset_work. If something is wrong, it will do a hardware reset and flush all pending requests; 3) Step 1) and 2) have a race that a request might be flushed in step 2), but step 1) releases the request firstly. Later on, when SOFTIRQ tries to release the scsi_cmnd, kernel panic. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
