Re: linux-next build error (8)

[Dmitry Vyukov]

On Wed, Mar 18, 2020 at 10:41 PM Paul E. McKenney <paulmck@xxxxxxxxxx> wrote:
>
> On Wed, Mar 18, 2020 at 09:54:07PM +0100, Dmitry Vyukov wrote:
> > On Wed, Mar 18, 2020 at 5:57 PM syzbot
> > <syzbot+792dec47d693ccdc05a0@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> > >
> > > Hello,
> > >
> > > syzbot found the following crash on:
> > >
> > > HEAD commit:    47780d78 Add linux-next specific files for 20200318
> > > git tree:       linux-next
> > > console output: https://syzkaller.appspot.com/x/log.txt?x=14228745e00000
> > > kernel config:  https://syzkaller.appspot.com/x/.config?x=b68b7b89ad96c62a
> > > dashboard link: https://syzkaller.appspot.com/bug?extid=792dec47d693ccdc05a0
> > > compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> > >
> > > Unfortunately, I don't have any reproducer for this crash yet.
> > >
> > > IMPORTANT: if you fix the bug, please add the following tag to the commit:
> > > Reported-by: syzbot+792dec47d693ccdc05a0@xxxxxxxxxxxxxxxxxxxxxxxxx
> > >
> > > kernel/rcu/tasks.h:1070:37: error: 'rcu_tasks_rude' undeclared (first use in this function); did you mean 'rcu_tasks_qs'?
> >
> > +rcu maintainers
>
> The kbuild test robot beat you to it, and apologies for the hassle.
> Fixed in -rcu on current "dev" branch.

If the kernel dev process would only have a way to avoid dups from all
test systems...
Now we need to spend time and deal with it. What has fixed it?