On Mon, 20 Aug 2018 15:16:52 -0700 Vagrant Cascadian <vagr...@debian.org> wrote:
One "armmp-lpae" system appears to have successfully booted, but gets
many kernel messages along these lines:
[ 78.638348] INFO: rcu_sched detected stalls on CPUs/tasks:
[ 78.642433] 0-...: (0 ticks this GP) idle=29c/0/0 softirq=1396/1396 fqs=0
[ 78.649321] (detected by 2, t=4204 jiffies, g=283, c=282, q=41917)
[ 78.655567] Task dump for CPU 0:
[ 78.658770] swapper/0 R running task 0 0 0 0x00000000
[ 78.665844] rcu_sched kthread starved for 4207 jiffies! g283 c282 f0x0
RCU_GP_WAIT_FQS(3) ->state=0x1
[ 78.674972] rcu_sched S 0 7 2 0x00000000
[ 78.680506] [<c09283cc>] (__schedule) from [<c092894c>] (schedule+0x50/0xa8)
[ 78.687501] [<c092894c>] (schedule) from [<c092bd50>]
(schedule_timeout+0x1e0/0x464)
[ 78.695231] [<c092bd50>] (schedule_timeout) from [<c02df870>]
(rcu_gp_kthread+0x574/0x908)
[ 78.703447] [<c02df870>] (rcu_gp_kthread) from [<c028b598>]
(kthread+0x118/0x130)
[ 78.710894] [<c028b598>] (kthread) from [<c0226da0>]
(ret_from_fork+0x14/0x34)
I have the same case - OdroidHC1 ARM device ( armmp-lpae ) booted, but some applications kept
hanging. Took forever to make it reboot into older kernel.
