On Wed, Feb 22, 2017 at 1:14 AM, Jan Kara <jack@xxxxxxx> wrote: > 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. Looks the 1st one is one old issue in blk-mq, and I have sent one patchset to address it: http://marc.info/?l=linux-kernel&m=148775847517071&w=2 Omar, feel free to give a test. thanks, Ming Lei
