Le Fri, Nov 15, 2024 at 11:01:25AM +0800, Mingcong Bai a écrit : > Hi Frederic, > > <snip> > > > Just in case, Mingcong Bai can you test the following patch without the > > revert and see if it triggers something? > > > > diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c > > index 35949ec1f935..b4f8ed8138d3 100644 > > --- a/kernel/rcu/tree.c > > +++ b/kernel/rcu/tree.c > > @@ -5170,6 +5170,7 @@ void rcutree_migrate_callbacks(int cpu) > > struct rcu_data *rdp = per_cpu_ptr(&rcu_data, cpu); > > bool needwake; > > > > + WARN_ON_ONCE(1); > > if (rcu_rdp_is_offloaded(rdp)) > > return; > > > > Please find attached the dmesg with your patch (and no revert) against > 6.12-rc7.
The added WARN_ON_ONCE() doesn't trigger so the function/path changed by this patch isn't taken. My only guess is that the patch changes some code layout that makes a bug more likely to appear in networking... Thanks. > > Best Regards, > Mingcong Bai > > > > > > > Thanks. > > > > > > > > Thanx, Paul
