On Sun 19-02-17 18:19:58, Omar Sandoval wrote: > On Fri, Feb 17, 2017 at 04:43:56PM -0800, James Bottomley wrote: > > This seems to be related to a 0day test we got on the block tree, > > details here: > > > > http://marc.info/?t=148624068800001 > > > > I root caused the above to something not being released when it should > > be, so it looks like you have the same problem. It seems to be a > > recent commit in the block tree, so could you bisect it since you have > > a nice reproducer? > > These appear to actually be two separate issues. > > The unbind followed by bind crash only happens with scsi-mq. It reproes > since at least 4.0. > > The unbind followed by a new device coming up crash happens both with > and without scsi-mq. The earliest version I was able to check for that > was 4.6, which did reproduce. > > I'll see if I can get some more info on these two issues separately. Actually, the second issue is only a warning right? And if I understand the issue correctly, it should be fixed by either Dan's patches in linux-block or my patch 4 in the series which matches your test results. So that is dealt with. I have no idea about the first issue though. Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR
