On Mon, Mar 01, 2021 at 09:07:03AM +0100, Greg Kroah-Hartman wrote: > On Mon, Mar 01, 2021 at 01:13:08AM +0100, Ben Hutchings wrote: > > On Tue, 2021-02-23 at 15:00 +0100, Greg Kroah-Hartman wrote: > > > I'm announcing the release of the 4.9.258 kernel. > > > > > > All users of the 4.9 kernel series must upgrade. > > > > > > The updated 4.9.y git tree can be found at: > > > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-4.9.y > > > and can be browsed at the normal kernel.org git web browser: > > > > > > > The backported futex fixes are still incomplete/broken in this version. > > If I enable lockdep and run the futex self-tests (from 5.10): > > > > - on 4.9.246, they pass with no lockdep output > > - on 4.9.257 and 4.9.258, they pass but futex_requeue_pi trigers a > > lockdep splat > > > > I have a local branch that essentially updates futex and rtmutex in > > 4.9-stable to match 4.14-stable. With this, the tests pass and lockdep > > is happy. > > > > Unfortunately, that branch has about another 60 commits. I have now rebased that on top of 4.9.258, and there are "only" 39 commits. > > Further, the > > more we change futex in 4.9, the more difficult it is going to be to > > update the 4.9-rt branch. But I don't see any better option available > > at the moment. > > > > Thoughts? > > There were some posted futex fixes for 4.9 (and 4.4) on the stable list > that I have not gotten to yet. > > Hopefully after these are merged (this week), these issues will be > resolved. I'm afraid they are not sufficient. > If not, then yes, they need to be fixed and any help you can provide > would be appreciated. > > As for "difficulty", yes, it's rough, but the changes backported were > required, for obvious reasons :( I had another look at the locking bug and I was able to make a series of 7 commits (on top of the 2 already queued) that is sufficient to make lockdep happy. But I am not very confident that there won't be other regressions. I'll send that over shortly. Ben. -- Ben Hutchings I'm always amazed by the number of people who take up solipsism because they heard someone else explain it. - E*Borg on alt.fan.pratchett
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