Hi Jiri, Thanks for the super quick reply! It looks like Ubuntu is indeed missing this commit. It contains the earlier 83d817f41070c48bc3eb7ec18e43000a548fca5c and cf62a1a13749db0d32b5cdd800ea91a4087319de commits, but not the commit you mention (from early this month). I guess I will try and pull this commit into Ubuntu and work with them to get it out, assuming it all works. Thanks again for the response. Michael On Wed, 30 Jan 2019 at 17:36, Jiri Slaby <jslaby@xxxxxxx> wrote: > > On 30. 01. 19, 7:28, md_5 wrote: > > All, > > > > I have spent the afternoon trying to track down a regression in a > > userspace application between: > > 4.15.0-43-generic #46-Ubuntu SMP Thu Dec 6 14:45:28 UTC 2018 > > and > > 4.15.0-44-generic #47-Ubuntu SMP Mon Jan 14 11:26:59 UTC 2019 > > > > After some investigation, I believe > > https://github.com/torvalds/linux/commit/c96cf923a98d1b094df9f0cf97a83e118817e31b > > "tty: Don't block on IO when ldisc change is pending" is the cause of > > this regression. > > Please make sure you have also d3736d82e8169768218ee0ef68718875918091a0 > applied. It fixes exactly this kind of problems. Do you have the commit? > > thanks, > -- > js > suse labs
