On Thu, Sep 19, 2019 at 1:07 PM Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > On Thu, Sep 19, 2019 at 08:21:43AM -0700, Christoph Paasch wrote: > > Hello Greg & Sasha, > > > > On Sat, Sep 14, 2019 at 12:20 AM Christoph Paasch <cpaasch@xxxxxxxxx> wrote: > > > > > > > > > The above referenced commit has problems on older non-rbTree kernels. > > > > > > AFAICS, the commit has only been backported to 4.14 up to now, but the > > > commit that fdfc5c8594c2 is fixing (namely ce5ec440994b ("tcp: ensure epoll > > > edge trigger wakeup when write queue is empty"), is in v4.2. > > > > > > Christoph Paasch (2): > > > tcp: Reset send_head when removing skb from write-queue > > > tcp: Don't dequeue SYN/FIN-segments from write-queue > > > > I'm checking in on these two patches for the 4.14 stable-queue. > > Especially the panic fixed by patch 2 is pretty easy to trigger :-/ > > Dude, it's been less than a week. And it's the middle of the merge > window. And it's the week after Plumbers and Maintainer's summit. > > Relax... Sorry! > I'll go queue these up now, but I am worried about them, given this > total mess the backports seem to have caused. > > Why isn't this needed in 4.9.y and 4.4.y also? >From what I see, commit fdfc5c8594c2 has not been backported to 4.9 and older. But I can imagine that eventually it will have to be backported (I guess Eric can confirm or deny). If it gets backported to 4.9 and 4.4, my 2 patches will have to come with them. Christoph