On Samstag, 31. Oktober 2020 20:10:49 CET Christian Schoenebeck wrote: > On Samstag, 31. Oktober 2020 18:46:11 CET Peter Xu wrote: > > On Sat, Oct 31, 2020 at 05:26:28PM +0000, Peter Maydell wrote: > > > On Sat, 31 Oct 2020 at 16:12, Christian Schoenebeck > > > > > > <[email protected]> wrote: > > > > On Montag, 26. Oktober 2020 17:19:36 CET Dr. David Alan Gilbert (git) > > wrote: > > > > > ---------------------------------------------------------------- > > > > > migration pull: 2020-10-26 > > > > > > > > > > Another go at Peter's postcopy fixes > > > > > > > > > > Cleanups from Bihong Yu and Peter Maydell. > > > > > > > > > > Signed-off-by: Dr. David Alan Gilbert <[email protected]> > > > > > > > > May it be possible that this PR introduced a lockup of the qtests that > > > > I > > > > am > > > > encountering in this week's upstream revisions? > > > > > > If you try the patches Peter Xu attached to this thread > > > does the lockup go away ? > > > > > > https://lore.kernel.org/qemu-devel/20201030135350.GA588069@xz-x1/ > > > > > > (I'm also seeing intermittent hangs, for some reason almost always > > > on s390x host.) > > > > It would be good to know exactly which test hanged. If it's > > migration-test > > then it's very possible. > > It's run-test-144 that does not return; according to Makefile.mtest that's > migration-test, so chances are high that it's indeed introduced by this PR. > > > The race above patch(es) tried to fix should logically be reproducable on > > all archs, not s390x only. > > > > Thanks, > > Yes, it's i386 here that locks up. > > I'm running the loop with your patches now, so far so good, let's see if > it's still alive tomorrow. > > Best regards, > Christian Schoenebeck
Looks good! 16h later and the loop is still running here; it also made the lockup to disappear on Travis-CI. So Peter Xu's two patches fix the lockup problem for me. Best regards, Christian Schoenebeck
