[ 12.007498][ T268] Initializing XFRM netlink socket [ 286.100326][ T12] [ 286.100409][ T12] ======================================================== [ 286.100536][ T12] WARNING: possible irq lock inversion dependency detected [ 286.100656][ T12] 7.1.0-rc5-virtme #1 Not tainted [ 286.100741][ T12] -------------------------------------------------------- [ 286.100862][ T12] kworker/u16:0/12 just changed the state of lock: [ 286.100963][ T12] ffffffffb13b7438 (acaddr_hash_lock){+.+.}-{3:3}, at: __ipv6_dev_ac_dec+0x236/0x5d0 [ 286.101117][ T12] but this lock was taken by another, SOFTIRQ-safe lock in the past: [ 286.101240][ T12] (&ndev->lock){++--}-{3:3} [ 286.101242][ T12] [ 286.101242][ T12] [ 286.101242][ T12] and interrupts could create inverse lock ordering between them. [ 286.101242][ T12] [ 286.101541][ T12] [ 286.101541][ T12] other info that might help us debug this: [ 286.101667][ T12] Possible interrupt unsafe locking scenario: [ 286.101667][ T12] [ 286.101788][ T12] CPU0 CPU1 [ 286.101870][ T12] ---- ---- [ 286.101951][ T12] lock(acaddr_hash_lock); [ 286.102037][ T12] local_irq_disable(); [ 286.102144][ T12] lock(&ndev->lock); [ 286.102254][ T12] lock(acaddr_hash_lock); [ 286.102398][ T12] [ 286.102460][ T12] lock(&ndev->lock); [ 286.102522][ T12] [ 286.102522][ T12] *** DEADLOCK *** [ 286.102522][ T12] [ 286.102639][ T12] 4 locks held by kworker/u16:0/12: [ 286.102722][ T12] #0: ff110000019e9d40 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410 [ 286.102886][ T12] #1: ffa00000000c7d10 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410 [ 286.103069][ T12] #2: ffffffffb1298268 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xbf/0x940 [ 286.103225][ T12] #3: ffffffffb12b4040 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0x9a/0x600 [ 286.103428][ T12] [ 286.103428][ T12] the shortest dependencies between 2nd lock and 1st lock: [ 286.103571][ T12] -> (&ndev->lock){++--}-{3:3} { [ 286.103658][ T12] HARDIRQ-ON-W at: [ 286.103723][ T12] __lock_acquire+0x378/0xc10 [ 286.103827][ T12] lock_acquire.part.0+0xbc/0x260 [ 286.103929][ T12] _raw_write_lock_bh+0x38/0x50 [ 286.104034][ T12] addrconf_permanent_addr+0x108/0x9c0 [ 286.104200][ T12] addrconf_notify+0x151/0xf30 [ 286.104303][ T12] notifier_call_chain+0xb0/0x320 [ 286.104405][ T12] __dev_notify_flags+0xde/0x280 [ 286.104510][ T12] netif_change_flags+0xfe/0x190 [ 286.104610][ T12] do_setlink.isra.0+0x1d25/0x2a60 [ 286.104711][ T12] rtnl_newlink+0x8d1/0xee0 [ 286.104855][ T12] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 286.104956][ T12] netlink_rcv_skb+0x14e/0x3a0 [ 286.105105][ T12] netlink_unicast+0x486/0x750 [ 286.105212][ T12] netlink_sendmsg+0x735/0xc60 [ 286.105317][ T12] ____sys_sendmsg+0x419/0x850 [ 286.105419][ T12] ___sys_sendmsg+0x14e/0x1d0 [ 286.105565][ T12] __sys_sendmsg+0x145/0x1f0 [ 286.105670][ T12] do_syscall_64+0x117/0x590 [ 286.105773][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 286.105939][ T12] HARDIRQ-ON-R at: [ 286.106001][ T12] __lock_acquire+0x378/0xc10 [ 286.106100][ T12] lock_acquire.part.0+0xbc/0x260 [ 286.106203][ T12] _raw_read_lock_bh+0x44/0x80 [ 286.106304][ T12] inet6_fill_ifla6_attrs+0x1c9c/0x23e0 [ 286.106426][ T12] inet6_fill_link_af+0x5c/0xe0 [ 286.106526][ T12] rtnl_fill_ifinfo.isra.0+0x1a45/0x2cd0 [ 286.106735][ T12] rtmsg_ifinfo_build_skb+0x144/0x250 [ 286.106855][ T12] rtmsg_ifinfo_event.part.0+0x2c/0x130 [ 286.106974][ T12] rtmsg_ifinfo+0x5c/0xb0 [ 286.107117][ T12] register_netdevice+0x1526/0x1bc0 [ 286.107263][ T12] register_netdev+0x23/0x40 [ 286.107363][ T12] vti6_init_net+0x280/0x3c0 [ 286.107509][ T12] ops_init+0x187/0x560 [ 286.107613][ T12] register_pernet_operations+0x395/0x8e0 [ 286.107733][ T12] register_pernet_device+0x2c/0x60 [ 286.107876][ T12] vti6_tunnel_init+0x17/0x100 [ 286.107977][ T12] do_one_initcall+0x12b/0x520 [ 286.108122][ T12] kernel_init_freeable+0x596/0x630 [ 286.108272][ T12] kernel_init+0x1e/0x170 [ 286.108375][ T12] ret_from_fork+0x474/0x6b0 [ 286.108478][ T12] ret_from_fork_asm+0x11/0x20 [ 286.108579][ T12] IN-SOFTIRQ-W at: [ 286.108640][ T12] __lock_acquire+0x378/0xc10 [ 286.108743][ T12] lock_acquire.part.0+0xbc/0x260 [ 286.108843][ T12] _raw_write_lock+0x33/0x40 [ 286.108943][ T12] addrconf_rs_timer+0xb0/0x770 [ 286.109044][ T12] call_timer_fn+0x163/0x4f0 [ 286.109146][ T12] __run_timers+0x68f/0xab0 [ 286.109249][ T12] run_timer_softirq+0xf0/0x160 [ 286.109349][ T12] handle_softirqs+0x1d8/0x940 [ 286.109451][ T12] __irq_exit_rcu+0x103/0x1c0 [ 286.109549][ T12] irq_exit_rcu+0xe/0x30 [ 286.109693][ T12] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 286.109897][ T12] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 286.110018][ T12] pv_native_safe_halt+0xf/0x10 [ 286.110209][ T12] default_idle+0x9/0x10 [ 286.110311][ T12] default_idle_call+0x6e/0xb0 [ 286.110411][ T12] cpuidle_idle_call.constprop.0+0x237/0x410 [ 286.110535][ T12] do_idle+0xf5/0x160 [ 286.110635][ T12] cpu_startup_entry+0x53/0x70 [ 286.110781][ T12] start_secondary+0x204/0x2b0 [ 286.110884][ T12] common_startup_64+0x13e/0x148 [ 286.110986][ T12] IN-SOFTIRQ-R at: [ 286.111047][ T12] __lock_acquire+0x378/0xc10 [ 286.111193][ T12] lock_acquire.part.0+0xbc/0x260 [ 286.111294][ T12] _raw_read_lock_bh+0x44/0x80 [ 286.111394][ T12] ipv6_get_lladdr+0xa8/0x3f0 [ 286.111539][ T12] addrconf_rs_timer+0x251/0x770 [ 286.111644][ T12] call_timer_fn+0x163/0x4f0 [ 286.111747][ T12] __run_timers+0x68f/0xab0 [ 286.111851][ T12] run_timer_softirq+0xf0/0x160 [ 286.111952][ T12] handle_softirqs+0x1d8/0x940 [ 286.112053][ T12] __irq_exit_rcu+0x103/0x1c0 [ 286.112201][ T12] irq_exit_rcu+0xe/0x30 [ 286.112302][ T12] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 286.112424][ T12] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 286.112544][ T12] pv_native_safe_halt+0xf/0x10 [ 286.112648][ T12] default_idle+0x9/0x10 [ 286.112748][ T12] default_idle_call+0x6e/0xb0 [ 286.112891][ T12] cpuidle_idle_call.constprop.0+0x237/0x410 [ 286.113014][ T12] do_idle+0xf5/0x160 [ 286.113119][ T12] cpu_startup_entry+0x53/0x70 [ 286.113229][ T12] start_secondary+0x204/0x2b0 [ 286.113329][ T12] common_startup_64+0x13e/0x148 [ 286.113430][ T12] INITIAL USE at: [ 286.113492][ T12] __lock_acquire+0x378/0xc10 [ 286.113595][ T12] lock_acquire.part.0+0xbc/0x260 [ 286.113699][ T12] _raw_write_lock_bh+0x38/0x50 [ 286.113801][ T12] addrconf_permanent_addr+0x108/0x9c0 [ 286.113922][ T12] addrconf_notify+0x151/0xf30 [ 286.114024][ T12] notifier_call_chain+0xb0/0x320 [ 286.114168][ T12] __dev_notify_flags+0xde/0x280 [ 286.114274][ T12] netif_change_flags+0xfe/0x190 [ 286.114374][ T12] do_setlink.isra.0+0x1d25/0x2a60 [ 286.114475][ T12] rtnl_newlink+0x8d1/0xee0 [ 286.114575][ T12] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 286.114680][ T12] netlink_rcv_skb+0x14e/0x3a0 [ 286.114782][ T12] netlink_unicast+0x486/0x750 [ 286.114885][ T12] netlink_sendmsg+0x735/0xc60 [ 286.114988][ T12] ____sys_sendmsg+0x419/0x850 [ 286.115092][ T12] ___sys_sendmsg+0x14e/0x1d0 [ 286.115199][ T12] __sys_sendmsg+0x145/0x1f0 [ 286.115302][ T12] do_syscall_64+0x117/0x590 [ 286.115405][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 286.115529][ T12] INITIAL READ USE at: [ 286.115609][ T12] __lock_acquire+0x378/0xc10 [ 286.115712][ T12] lock_acquire.part.0+0xbc/0x260 [ 286.115836][ T12] _raw_read_lock_bh+0x44/0x80 [ 286.115936][ T12] inet6_fill_ifla6_attrs+0x1c9c/0x23e0 [ 286.116100][ T12] inet6_fill_link_af+0x5c/0xe0 [ 286.116206][ T12] rtnl_fill_ifinfo.isra.0+0x1a45/0x2cd0 [ 286.116330][ T12] rtmsg_ifinfo_build_skb+0x144/0x250 [ 286.116450][ T12] rtmsg_ifinfo_event.part.0+0x2c/0x130 [ 286.116570][ T12] rtmsg_ifinfo+0x5c/0xb0 [ 286.116672][ T12] register_netdevice+0x1526/0x1bc0 [ 286.116879][ T12] register_netdev+0x23/0x40 [ 286.116981][ T12] vti6_init_net+0x280/0x3c0 [ 286.117084][ T12] ops_init+0x187/0x560 [ 286.117189][ T12] register_pernet_operations+0x395/0x8e0 [ 286.117311][ T12] register_pernet_device+0x2c/0x60 [ 286.117431][ T12] vti6_tunnel_init+0x17/0x100 [ 286.117535][ T12] do_one_initcall+0x12b/0x520 [ 286.117682][ T12] kernel_init_freeable+0x596/0x630 [ 286.117801][ T12] kernel_init+0x1e/0x170 [ 286.117902][ T12] ret_from_fork+0x474/0x6b0 [ 286.118006][ T12] ret_from_fork_asm+0x11/0x20 [ 286.118106][ T12] } [ 286.118194][ T12] ... key at: [] __key.37+0x0/0x40 [ 286.118358][ T12] ... acquired at: [ 286.118418][ T12] __lock_acquire+0x508/0xc10 [ 286.118501][ T12] lock_acquire.part.0+0xbc/0x260 [ 286.118583][ T12] _raw_spin_lock+0x33/0x40 [ 286.118666][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 286.118852][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 286.118933][ T12] addrconf_join_anycast+0x1bc/0x260 [ 286.119014][ T12] __ipv6_ifa_notify+0x75b/0xad0 [ 286.119094][ T12] addrconf_dad_completed+0x14b/0xe10 [ 286.119174][ T12] addrconf_dad_work+0x3c1/0x930 [ 286.119299][ T12] process_one_work+0xdf8/0x1410 [ 286.119381][ T12] worker_thread+0x4f1/0xd60 [ 286.119461][ T12] kthread+0x367/0x460 [ 286.119522][ T12] ret_from_fork+0x474/0x6b0 [ 286.119602][ T12] ret_from_fork_asm+0x11/0x20 [ 286.119685][ T12] [ 286.119726][ T12] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 286.119809][ T12] HARDIRQ-ON-W at: [ 286.119870][ T12] __lock_acquire+0x378/0xc10 [ 286.119969][ T12] lock_acquire.part.0+0xbc/0x260 [ 286.120070][ T12] _raw_spin_lock+0x33/0x40 [ 286.120171][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 286.120295][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 286.120441][ T12] addrconf_join_anycast+0x1bc/0x260 [ 286.120541][ T12] __ipv6_ifa_notify+0x75b/0xad0 [ 286.120643][ T12] addrconf_dad_completed+0x14b/0xe10 [ 286.120744][ T12] addrconf_dad_work+0x3c1/0x930 [ 286.120888][ T12] process_one_work+0xdf8/0x1410 [ 286.120990][ T12] worker_thread+0x4f1/0xd60 [ 286.121089][ T12] kthread+0x367/0x460 [ 286.121170][ T12] ret_from_fork+0x474/0x6b0 [ 286.121272][ T12] ret_from_fork_asm+0x11/0x20 [ 286.121373][ T12] SOFTIRQ-ON-W at: [ 286.121433][ T12] __lock_acquire+0x378/0xc10 [ 286.121554][ T12] lock_acquire.part.0+0xbc/0x260 [ 286.121721][ T12] _raw_spin_lock+0x33/0x40 [ 286.121824][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 286.121966][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 286.122111][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 286.122215][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 286.122362][ T12] addrconf_notify+0x2c8/0xf30 [ 286.122465][ T12] notifier_call_chain+0xb0/0x320 [ 286.122606][ T12] netif_close_many+0x2c9/0x640 [ 286.122709][ T12] unregister_netdevice_many_notify+0x71a/0x1b30 [ 286.122913][ T12] default_device_exit_batch+0x38b/0x600 [ 286.123033][ T12] ops_undo_list+0x2ce/0x8f0 [ 286.123134][ T12] cleanup_net+0x431/0x940 [ 286.123236][ T12] process_one_work+0xdf8/0x1410 [ 286.123380][ T12] worker_thread+0x4f1/0xd60 [ 286.123479][ T12] kthread+0x367/0x460 [ 286.123562][ T12] ret_from_fork+0x474/0x6b0 [ 286.123662][ T12] ret_from_fork_asm+0x11/0x20 [ 286.123763][ T12] INITIAL USE at: [ 286.123865][ T12] __lock_acquire+0x378/0xc10 [ 286.123964][ T12] lock_acquire.part.0+0xbc/0x260 [ 286.124063][ T12] _raw_spin_lock+0x33/0x40 [ 286.124163][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 286.124333][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 286.124434][ T12] addrconf_join_anycast+0x1bc/0x260 [ 286.124534][ T12] __ipv6_ifa_notify+0x75b/0xad0 [ 286.124634][ T12] addrconf_dad_completed+0x14b/0xe10 [ 286.124735][ T12] addrconf_dad_work+0x3c1/0x930 [ 286.124879][ T12] process_one_work+0xdf8/0x1410 [ 286.124981][ T12] worker_thread+0x4f1/0xd60 [ 286.125081][ T12] kthread+0x367/0x460 [ 286.125162][ T12] ret_from_fork+0x474/0x6b0 [ 286.125265][ T12] ret_from_fork_asm+0x11/0x20 [ 286.125409][ T12] } [ 286.125449][ T12] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 286.125568][ T12] ... acquired at: [ 286.125650][ T12] mark_lock+0x1d7/0xa00 [ 286.125774][ T12] mark_usage+0x105/0x170 [ 286.125852][ T12] __lock_acquire+0x378/0xc10 [ 286.125931][ T12] lock_acquire.part.0+0xbc/0x260 [ 286.126051][ T12] _raw_spin_lock+0x33/0x40 [ 286.126132][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 286.126257][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 286.126336][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 286.126415][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 286.126495][ T12] addrconf_notify+0x2c8/0xf30 [ 286.126615][ T12] notifier_call_chain+0xb0/0x320 [ 286.126696][ T12] netif_close_many+0x2c9/0x640 [ 286.126775][ T12] unregister_netdevice_many_notify+0x71a/0x1b30 [ 286.126938][ T12] default_device_exit_batch+0x38b/0x600 [ 286.127037][ T12] ops_undo_list+0x2ce/0x8f0 [ 286.127116][ T12] cleanup_net+0x431/0x940 [ 286.127197][ T12] process_one_work+0xdf8/0x1410 [ 286.127278][ T12] worker_thread+0x4f1/0xd60 [ 286.127362][ T12] kthread+0x367/0x460 [ 286.127466][ T12] ret_from_fork+0x474/0x6b0 [ 286.127546][ T12] ret_from_fork_asm+0x11/0x20 [ 286.127671][ T12] [ 286.127712][ T12] [ 286.127712][ T12] stack backtrace: [ 286.127814][ T12] CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 286.127817][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 286.127820][ T12] Workqueue: netns cleanup_net [ 286.127823][ T12] Call Trace: [ 286.127825][ T12] [ 286.127826][ T12] dump_stack_lvl+0x6f/0xa0 [ 286.127830][ T12] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 286.127833][ T12] mark_lock_irq+0x989/0x9c0 [ 286.127836][ T12] mark_lock+0x1d7/0xa00 [ 286.127838][ T12] mark_usage+0x105/0x170 [ 286.127839][ T12] __lock_acquire+0x378/0xc10 [ 286.127841][ T12] lock_acquire.part.0+0xbc/0x260 [ 286.127843][ T12] ? __ipv6_dev_ac_dec+0x236/0x5d0 [ 286.127844][ T12] ? rcu_is_watching+0x15/0xd0 [ 286.127847][ T12] ? do_raw_read_unlock+0x70/0x70 [ 286.127849][ T12] ? lock_acquire+0x134/0x160 [ 286.127851][ T12] _raw_spin_lock+0x33/0x40 [ 286.127852][ T12] ? __ipv6_dev_ac_dec+0x236/0x5d0 [ 286.127854][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 286.127856][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 286.127858][ T12] ? inet6_dump_ifinfo+0x6e0/0x6e0 [ 286.127859][ T12] ? __ipv6_isatap_ifid+0x210/0x210 [ 286.127861][ T12] ? nlmsg_notify+0x62/0x250 [ 286.127864][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 286.127866][ T12] ? cleanup_prefix_route+0x550/0x550 [ 286.127868][ T12] ? find_held_lock+0x2b/0x80 [ 286.127869][ T12] ? __lock_release.isra.0+0x6b/0x1a0 [ 286.127871][ T12] ? __rwlock_init+0x150/0x150 [ 286.127872][ T12] ? mark_held_locks+0x40/0x70 [ 286.127874][ T12] ? addrconf_ifdown.isra.0+0xa70/0x15f0 [ 286.127876][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 286.127878][ T12] ? __timer_delete_sync+0xdb/0x130 [ 286.127881][ T12] ? addrconf_dad_run+0x1b0/0x1b0 [ 286.127883][ T12] ? netkit_xmit+0x14c0/0x14c0 [ 286.127887][ T12] addrconf_notify+0x2c8/0xf30 [ 286.127888][ T12] ? team_port_get_rtnl+0x65/0xc0 [ 286.127891][ T12] notifier_call_chain+0xb0/0x320 [ 286.127893][ T12] netif_close_many+0x2c9/0x640 [ 286.127895][ T12] ? lock_acquire+0x134/0x160 [ 286.127896][ T12] ? rcu_is_watching+0x15/0xd0 [ 286.127898][ T12] ? rcu_is_watching+0x15/0xd0 [ 286.127899][ T12] ? __dev_close_many+0x670/0x670 [ 286.127901][ T12] ? netif_close_many_and_unlock+0x22/0x2c0 [ 286.127903][ T12] unregister_netdevice_many_notify+0x71a/0x1b30 [ 286.127905][ T12] ? mutex_is_locked+0x1c/0x50 [ 286.127907][ T12] ? unregister_netdevice_queued+0x80/0x80 [ 286.127909][ T12] ? mutex_is_locked+0x1c/0x50 [ 286.127911][ T12] ? rtnl_is_locked+0x15/0x20 [ 286.127913][ T12] ? unregister_netdevice_queue+0x6a/0x470 [ 286.127914][ T12] ? unregister_netdevice_many+0x20/0x20 [ 286.127916][ T12] default_device_exit_batch+0x38b/0x600 [ 286.127918][ T12] ? unregister_netdev+0x60/0x60 [ 286.127919][ T12] ? perf_trace_sched_switch+0x7d0/0x7d0 [ 286.127922][ T12] ? fou_exit_net+0x30/0x110 [ 286.127925][ T12] ops_undo_list+0x2ce/0x8f0 [ 286.127927][ T12] ? lockdep_hardirqs_on+0x8c/0x130 [ 286.127930][ T12] ? netns_install+0x2a0/0x2a0 [ 286.127931][ T12] ? __lock_release.isra.0+0x6b/0x1a0 [ 286.127932][ T12] ? idr_destroy+0x121/0x250 [ 286.127935][ T12] cleanup_net+0x431/0x940 [ 286.127937][ T12] ? net_passive_dec+0x1c0/0x1c0 [ 286.127938][ T12] ? process_one_work+0xdb7/0x1410 [ 286.127940][ T12] ? lock_acquire+0x134/0x160 [ 286.127942][ T12] ? rcu_is_watching+0x15/0xd0 [ 286.127944][ T12] process_one_work+0xdf8/0x1410 [ 286.127946][ T12] ? pwq_dec_nr_in_flight+0x710/0x710 [ 286.127948][ T12] ? lock_acquire.part.0+0xbc/0x260 [ 286.127951][ T12] worker_thread+0x4f1/0xd60 [ 286.127954][ T12] ? rescuer_thread+0x1320/0x1320 [ 286.127955][ T12] kthread+0x367/0x460 [ 286.127957][ T12] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 286.127960][ T12] ? kthread_affine_node+0x330/0x330 [ 286.127962][ T12] ret_from_fork+0x474/0x6b0 [ 286.127963][ T12] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120 [ 286.127965][ T12] ? __switch_to+0x5a3/0xe00 [ 286.127968][ T12] ? kthread_affine_node+0x330/0x330 [ 286.127969][ T12] ret_from_fork_asm+0x11/0x20 [ 286.127972][ T12]