Am Mittwoch, 17. Juni 2020, 21:31:40 CEST schrieb Rolf Eike Beer: > Am Mittwoch, 17. Juni 2020, 16:41:44 CEST schrieb John David Anglin: > > On 2020-06-16 10:57 a.m., John David Anglin wrote:I will post an updated > > patch against trunk in a day or two. The debian gcc-snapshot package is > > > > > building on mx3210 and phantom. This package almost always failed to > > > build on phantom. > > > > Sadly, the patch doesn't fix problem: > Whatever is still the issue, for me it makes things much better. So you may > add: > > Tested-by: Rolf Eike Beer <eike-kernel@xxxxxxxxx> And now that we talked about it the machine is dead: [209974.638738] rcu: INFO: rcu_sched detected stalls on CPUs/tasks: [209974.638738] rcu: 3-...!: (0 ticks this GP) idle=64a/ 1/0x4000000000000000 softirq=20658539/20658539 fqs=0 [209974.638738] (detected by 0, t=5505612 jiffies, g=39395637, q=10) [209974.638738] Task dump for CPU 3: [209974.638738] sh R running task 0 9458 9177 0x00000012 [209974.638738] Backtrace: [209974.638738] [209974.638738] rcu: rcu_sched kthread starved for 5505612 jiffies! g39395637 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200 ->cpu=1 [209974.638738] rcu: RCU grace-period kthread stack dump: [209974.638738] rcu_sched R 0 10 2 0x00000000 [209974.638738] Backtrace: I still think that patch is a step in the right direction. Eike
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