[    2.356848] Registering SWP/SWPB emulation handler
[   23.407686] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[   23.413749] rcu:     0-...0: (1 GPs behind) idle=7c6/1/0x40000000 softirq=274/275 fqs=1050
[   23.421769] rcu:     (detected by 2, t=2103 jiffies, g=-1131, q=15)
[   23.427730] Sending NMI from CPU 2 to CPUs 0:
[   33.431296] rcu: rcu_preempt kthread starved for 999 jiffies! g-1131 f0x0 RCU_GP_DOING_FQS(6) ->state=0x0 ->cpu=3
[   33.441470] rcu: RCU grace-period kthread stack dump:
[   33.446474] rcu_preempt     I    0    10      2 0x00000000
[   33.451933] [<c0660488>] (__schedule) from [<c0660584>] (schedule+0x88/0xa8)
[   33.458927] [<c0660584>] (schedule) from [<c0664494>] (schedule_timeout+0x25c/0x278)
[   33.466612] [<c0664494>] (schedule_timeout) from [<c016ff2c>] (rcu_gp_kthread+0x5bc/0xa64)
[   33.474814] [<c016ff2c>] (rcu_gp_kthread) from [<c013801c>] (kthread+0x14c/0x154)
[   33.482238] [<c013801c>] (kthread) from [<c01010e8>] (ret_from_fork+0x14/0x2c)
[   33.489398] Exception stack(0xdf46bfb0 to 0xdf46bff8)
[   33.494405] bfa0:                                     00000000 00000000 00000000 00000000
[   33.502515] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   33.510624] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000