======================================
| [ 258.482964][ C2] #0: ff1100001aa7bab8 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: __sock_release (./include/linux/fs.h:1029 net/socket.c:721)
| [ 258.483138][ C2] #1: ffffffff8778bc80 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [ 258.483289][ C2]
| [ 258.483289][ C2] stack backtrace:
[ 258.483401][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 258.483403][ C2] Call Trace:
[ 258.483405][ C2]
[ 258.483406][ C2] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[ 258.483411][ C2] print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[ 258.483415][ C2] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[ 258.483416][ C2] ? netlink_release (./include/net/sock.h:2141 net/netlink/af_netlink.c:727)
[ 258.483418][ C2] ? save_trace (kernel/locking/lockdep.c:589)
[ 258.483419][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5237)
[ 258.483421][ C2] mark_lock (kernel/locking/lockdep.c:4753)
[ 258.483423][ C2] mark_usage (kernel/locking/lockdep.c:4642)
[ 258.483424][ C2] __lock_acquire (kernel/locking/lockdep.c:5191)
[ 258.483426][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4325)
[ 258.483428][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[ 258.483430][ C2] ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[ 258.483432][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[ 258.483434][ C2] ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[ 258.483436][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[ 258.483437][ C2] ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[ 258.483438][ C2] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[ 258.483440][ C2] tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[ 258.483441][ C2] ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[ 258.483443][ C2] rcu_do_batch (kernel/rcu/tree.c:2617)
[ 258.483446][ C2] ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[ 258.483448][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4325)
[ 258.483450][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[ 258.483451][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[ 258.483453][ C2] rcu_core (kernel/rcu/tree.c:2869)
[ 258.483455][ C2] handle_softirqs (kernel/softirq.c:622)
[ 258.483456][ C2] ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[ 258.483458][ C2] ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[ 258.483460][ C2] do_softirq (kernel/softirq.c:523 (discriminator 19) kernel/softirq.c:510 (discriminator 19))
[ 258.483461][ C2]
[ 258.483462][ C2]
[ 258.483462][ C2] __local_bh_enable_ip (kernel/softirq.c:450)
[ 258.483464][ C2] netlink_release (./include/net/sock.h:2141 net/netlink/af_netlink.c:727)
[ 258.483466][ C2] ? netlink_remove (net/netlink/af_netlink.c:2881)
[ 258.483468][ C2] ? rwsem_down_write_slowpath (./include/linux/list.h:159)
[ 258.483470][ C2] ? irq_matrix_available (kernel/irq/matrix.c:458 (discriminator 5))
[ 258.483473][ C2] __sock_release (net/socket.c:722)
[ 258.483475][ C2] sock_close (net/socket.c:1514 (discriminator 1))
[ 258.483476][ C2] __fput (fs/file_table.c:510)
[ 258.483480][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[ 258.483481][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[ 258.483485][ C2] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[ 258.483486][ C2] ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:187 kernel/locking/spinlock.c:206)
[ 258.483488][ C2] ? _raw_spin_unlock_irq (./include/linux/spinlock_api_smp.h:188 (discriminator 1) kernel/locking/spinlock.c:206 (discriminator 1))
[ 258.483489][ C2] task_work_run (kernel/task_work.c:233)
[ 258.483491][ C2] ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[ 258.483492][ C2] ? task_work_cancel (kernel/task_work.c:190)
[ 258.483494][ C2] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[ 258.483496][ C2] do_exit (./include/linux/task_work.h:40 kernel/exit.c:976)
[ 258.483497][ C2] ? exit_notify (kernel/exit.c:748)
[ 258.483498][ C2] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[ 258.483500][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[ 258.483502][ C2] do_group_exit (kernel/exit.c:1119)
[ 258.483503][ C2] __x64_sys_exit_group (kernel/exit.c:1130 kernel/exit.c:1128 kernel/exit.c:1128)
[ 258.483505][ C2] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[ 258.483507][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[ 258.483508][ C2] ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[ 258.483510][ C2] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[ 258.483511][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[ 258.483513][ C2] RIP: 0033:0x7fc539eee2b8
[ 258.483516][ C2] Code: Unable to access opcode bytes at 0x7fc539eee28e.
Code starting with the faulting instruction
===========================================
[ 258.483517][ C2] RSP: 002b:00007ffeac334168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 258.483519][ C2] RAX: ffffffffffffffda RBX: 00007fc53a01ff88 RCX: 00007fc539eee2b8
[ 258.483520][ C2] RDX: 00007fc539c63b48 RSI: fffffffffffffeb8 RDI: 0000000000000000
[ 258.483521][ C2] RBP: 00007ffeac3341c0 R08: 0000000000000000 R09: 0000000000000060
[ 258.483522][ C2] R10: 00007ffeac333f80 R11: 0000000000000246 R12: 0000000000000001
Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock