[ 9104.057942] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 9104.058060] rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-3): P362/1:b..l
[ 9104.058108] rcu: 	(detected by 1, t=9093809 jiffies, g=761, q=128 ncpus=4)
[ 9104.058157] task:ping            state:D stack:12752 pid:362   tgid:362   ppid:233    task_flags:0x40010c flags:0x00004002
[ 9104.058240] Call Trace:
[ 9104.058258]  <TASK>
[ 9104.058278]  __schedule+0x4fc/0xb40
[ 9104.058322]  schedule+0x27/0xd0
[ 9104.058352]  __lock_sock+0x7b/0xc0
[ 9104.058386]  ? housekeeping_test_cpu+0x40/0x40
[ 9104.058427]  __lock_sock_fast+0x39/0x60
[ 9104.058465]  udp_destroy_sock+0x13/0xb0
[ 9104.058510]  sk_common_release+0x1e/0xf0
[ 9104.058540]  inet_release+0x3d/0x70
[ 9104.058573]  __sock_release+0x38/0xb0
[ 9104.058604]  sock_close+0x15/0x20
[ 9104.058629]  __fput+0xda/0x290
[ 9104.058662]  task_work_run+0x59/0x80
[ 9104.058693]  do_exit+0x26c/0xae0
[ 9104.058725]  make_task_dead+0x7d/0x160
[ 9104.058755]  rewind_stack_and_make_dead+0x16/0x20
[ 9104.058796] RIP: 0033:0x7f268ea8ad77
[ 9104.058844] RSP: 002b:00007fff72d4cfb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
[ 9104.058902] RAX: ffffffffffffffda RBX: 00007fff72d4e986 RCX: 00007f268ea8ad77
[ 9104.058954] RDX: 0000000000000010 RSI: 00007fff72d4d020 RDI: 0000000000000007
[ 9104.059014] RBP: 00007fff72d4d670 R08: 00000000305ce710 R09: 0000000000000000
[ 9104.059072] R10: 00007f268e9825a0 R11: 0000000000000246 R12: 00007fff72d4d9c8
[ 9104.059129] R13: 000000000040305a R14: 0000000000415dd0 R15: 00007f268ebf6000
[ 9104.059182]  </TASK>