Hello Mike et al. On neděle 30. července 2017 7:12:31 CEST Mike Galbraith wrote: > FWIW, first thing I'd do is update that 4.12.0 to 4.12.4, and see if > stable fixed it. My build already includes v4.12.4. > If not, I'd find these two commits irresistible. > > 5f042e7cbd9eb blk-mq: Include all present CPUs in the default queue mapping > 4b855ad37194f blk-mq: Create hctx for each present CPU I've applied these 2 commits, and cannot reproduce the issue anymore. Looks like a perfect hit, thanks! > 'course applying random upstream bits does come with some risk, trying > a kernel already containing them has less "entertainment" potential. Should you consider applying them to v4.12.x stable series? CC'ing Greg just in case.