http://bugzilla.kernel.org/show_bug.cgi?id=11732 ------- Comment #7 from axboe@xxxxxxxxx 2008-10-16 02:08 ------- Initially it looks like IDE calling dma mapping for a request with no data attached. blk_rq_map_sg() returns 0 if no data is attached, it has no error case. So saying that IDE just passes that on to dma mapping doesn't say a whole lot. To be sure, it would be interesting to catch a blktrace of this happening so we can see more closely. So, IOW, do: 1) In one termimal, run blktrace /dev/hdX (eg /dev/hda, or whatever is your cdrom). 2) In another terminal, mount the drive or whatever reproduces the error. 3) In that first terminal, ctrl-c blktrace. Then run blkparse hdX -o output and attach output to this bug. -- 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-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
