On Fri, Feb 3, 2012 at 8:02 PM, Eric W. Biederman <ebiederm@xxxxxxxxxxxx> wrote: > Bjorn Helgaas <bhelgaas@xxxxxxxxxx> writes: > >> Eric recently added ce59791936, which is a check that complains if we >> try to remove files from non-existent directories. > > Yes. It has always been a bug but since no one checked their error > codes it has been going unnoticed. > >> When I remove a device (LSI SAS2008 in this case, but I don't know if >> it's specific to that), I hit that warning three times. Let me know >> if I can collect any more data. > > I tried to read that code and understand what is going on but I don't > know enough about the block and scsi layers to have a clue where to > start. > > bsg_unregister_queue seems to be a generic piece of infrastructure. > > q->kobj seems to be managed separately from q->bsg_dev->class_dev. > > If I read q->kobj correctly that is managed with blk_put_queue. > > So it seems like the final blk_put_queue or blk_unregister_queue is > being called before bsg_unregister_queue and causing this problem. > > What the solution might be I can't believe to figure out. This fixed it for me: https://lkml.org/lkml/2012/2/8/246 -- Dan -- 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
