[ 100.469216][ T1421] [ 100.469333][ T1421] ======================================================== [ 100.469534][ T1421] WARNING: possible irq lock inversion dependency detected [ 100.469730][ T1421] 7.1.0-rc5-virtme #1 Not tainted [ 100.469867][ T1421] -------------------------------------------------------- [ 100.470060][ T1421] ip/1421 just changed the state of lock: [ 100.470198][ T1421] ffffffffaed7e8b8 (acaddr_hash_lock){+.+.}-{3:3}, at: __ipv6_dev_ac_dec+0x236/0x5d0 [ 100.470427][ T1421] but this lock was taken by another, SOFTIRQ-safe lock in the past: [ 100.470618][ T1421] (&ndev->lock){++--}-{3:3} [ 100.470623][ T1421] [ 100.470623][ T1421] [ 100.470623][ T1421] and interrupts could create inverse lock ordering between them. [ 100.470623][ T1421] [ 100.471093][ T1421] [ 100.471093][ T1421] other info that might help us debug this: [ 100.471283][ T1421] Possible interrupt unsafe locking scenario: [ 100.471283][ T1421] [ 100.471470][ T1421] CPU0 CPU1 [ 100.471598][ T1421] ---- ---- [ 100.471729][ T1421] lock(acaddr_hash_lock); [ 100.471869][ T1421] local_irq_disable(); [ 100.472033][ T1421] lock(&ndev->lock); [ 100.472199][ T1421] lock(acaddr_hash_lock); [ 100.472360][ T1421] [ 100.472460][ T1421] lock(&ndev->lock); [ 100.472560][ T1421] [ 100.472560][ T1421] *** DEADLOCK *** [ 100.472560][ T1421] [ 100.472751][ T1421] 1 lock held by ip/1421: [ 100.472850][ T1421] #0: ffffffffaec8c9c0 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x883/0xef0 [ 100.473086][ T1421] [ 100.473086][ T1421] the shortest dependencies between 2nd lock and 1st lock: [ 100.473304][ T1421] -> (&ndev->lock){++--}-{3:3} { [ 100.473435][ T1421] HARDIRQ-ON-W at: [ 100.473537][ T1421] __lock_acquire+0x378/0xc10 [ 100.473710][ T1421] lock_acquire.part.0+0xbc/0x260 [ 100.473880][ T1421] _raw_write_lock_bh+0x38/0x50 [ 100.474045][ T1421] addrconf_permanent_addr+0x108/0x9c0 [ 100.474243][ T1421] addrconf_notify+0x151/0xf30 [ 100.474402][ T1421] notifier_call_chain+0xb0/0x320 [ 100.474570][ T1421] __dev_notify_flags+0xde/0x280 [ 100.474737][ T1421] netif_change_flags+0xfe/0x190 [ 100.474910][ T1421] do_setlink.isra.0+0x1cc3/0x2750 [ 100.475074][ T1421] rtnl_newlink+0x8d1/0xef0 [ 100.475240][ T1421] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 100.475412][ T1421] netlink_rcv_skb+0x14e/0x3a0 [ 100.475576][ T1421] netlink_unicast+0x486/0x750 [ 100.475739][ T1421] netlink_sendmsg+0x735/0xc60 [ 100.475912][ T1421] ____sys_sendmsg+0x419/0x850 [ 100.476080][ T1421] ___sys_sendmsg+0x14e/0x1d0 [ 100.476251][ T1421] __sys_sendmsg+0x145/0x1f0 [ 100.476415][ T1421] do_syscall_64+0x117/0x590 [ 100.476578][ T1421] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 100.476774][ T1421] HARDIRQ-ON-R at: [ 100.476883][ T1421] __lock_acquire+0x378/0xc10 [ 100.477052][ T1421] lock_acquire.part.0+0xbc/0x260 [ 100.477221][ T1421] _raw_read_lock_bh+0x44/0x80 [ 100.477386][ T1421] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 100.477582][ T1421] inet6_fill_link_af+0x5c/0xe0 [ 100.477747][ T1421] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 100.477950][ T1421] rtnl_getlink+0x9c9/0xeb0 [ 100.478119][ T1421] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 100.478283][ T1421] netlink_rcv_skb+0x14e/0x3a0 [ 100.478452][ T1421] netlink_unicast+0x486/0x750 [ 100.478616][ T1421] netlink_sendmsg+0x735/0xc60 [ 100.478783][ T1421] ____sys_sendmsg+0x419/0x850 [ 100.478960][ T1421] ___sys_sendmsg+0x14e/0x1d0 [ 100.479128][ T1421] __sys_sendmsg+0x145/0x1f0 [ 100.479294][ T1421] do_syscall_64+0x117/0x590 [ 100.479455][ T1421] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 100.479647][ T1421] IN-SOFTIRQ-W at: [ 100.479748][ T1421] __lock_acquire+0x378/0xc10 [ 100.479924][ T1421] lock_acquire.part.0+0xbc/0x260 [ 100.480089][ T1421] _raw_write_lock+0x33/0x40 [ 100.480251][ T1421] addrconf_rs_timer+0xb0/0x770 [ 100.480411][ T1421] call_timer_fn+0x163/0x4f0 [ 100.480573][ T1421] __run_timers+0x68f/0xab0 [ 100.480735][ T1421] run_timer_softirq+0xf0/0x160 [ 100.480909][ T1421] handle_softirqs+0x1d8/0x940 [ 100.481073][ T1421] __irq_exit_rcu+0x103/0x1c0 [ 100.481237][ T1421] irq_exit_rcu+0xe/0x30 [ 100.481403][ T1421] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 100.481602][ T1421] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 100.481810][ T1421] pv_native_safe_halt+0xf/0x10 [ 100.481979][ T1421] default_idle+0x9/0x10 [ 100.482140][ T1421] default_idle_call+0x6e/0xb0 [ 100.482296][ T1421] cpuidle_idle_call.constprop.0+0x237/0x410 [ 100.482489][ T1421] do_idle+0xf5/0x160 [ 100.482651][ T1421] cpu_startup_entry+0x53/0x70 [ 100.482808][ T1421] start_secondary+0x204/0x2b0 [ 100.482979][ T1421] common_startup_64+0x13e/0x148 [ 100.483140][ T1421] IN-SOFTIRQ-R at: [ 100.483239][ T1421] __lock_acquire+0x378/0xc10 [ 100.483398][ T1421] lock_acquire.part.0+0xbc/0x260 [ 100.483568][ T1421] _raw_read_lock_bh+0x44/0x80 [ 100.483734][ T1421] ipv6_get_lladdr+0xa8/0x3f0 [ 100.483903][ T1421] addrconf_rs_timer+0x251/0x770 [ 100.484064][ T1421] call_timer_fn+0x163/0x4f0 [ 100.484222][ T1421] __run_timers+0x68f/0xab0 [ 100.484483][ T1421] run_timer_softirq+0xf0/0x160 [ 100.484640][ T1421] handle_softirqs+0x1d8/0x940 [ 100.484797][ T1421] __irq_exit_rcu+0x103/0x1c0 [ 100.485043][ T1421] irq_exit_rcu+0xe/0x30 [ 100.485205][ T1421] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 100.485395][ T1421] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 100.485675][ T1421] pv_native_safe_halt+0xf/0x10 [ 100.485835][ T1421] default_idle+0x9/0x10 [ 100.486004][ T1421] default_idle_call+0x6e/0xb0 [ 100.486247][ T1421] cpuidle_idle_call.constprop.0+0x237/0x410 [ 100.486446][ T1421] do_idle+0xf5/0x160 [ 100.486608][ T1421] cpu_startup_entry+0x53/0x70 [ 100.486871][ T1421] start_secondary+0x204/0x2b0 [ 100.487035][ T1421] common_startup_64+0x13e/0x148 [ 100.487198][ T1421] INITIAL USE at: [ 100.487300][ T1421] __lock_acquire+0x378/0xc10 [ 100.487552][ T1421] lock_acquire.part.0+0xbc/0x260 [ 100.487711][ T1421] _raw_write_lock_bh+0x38/0x50 [ 100.487881][ T1421] addrconf_permanent_addr+0x108/0x9c0 [ 100.488157][ T1421] addrconf_notify+0x151/0xf30 [ 100.488322][ T1421] notifier_call_chain+0xb0/0x320 [ 100.488481][ T1421] __dev_notify_flags+0xde/0x280 [ 100.488717][ T1421] netif_change_flags+0xfe/0x190 [ 100.488881][ T1421] do_setlink.isra.0+0x1cc3/0x2750 [ 100.489038][ T1421] rtnl_newlink+0x8d1/0xef0 [ 100.489282][ T1421] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 100.489444][ T1421] netlink_rcv_skb+0x14e/0x3a0 [ 100.489605][ T1421] netlink_unicast+0x486/0x750 [ 100.489863][ T1421] netlink_sendmsg+0x735/0xc60 [ 100.490031][ T1421] ____sys_sendmsg+0x419/0x850 [ 100.490193][ T1421] ___sys_sendmsg+0x14e/0x1d0 [ 100.490368][ T1421] __sys_sendmsg+0x145/0x1f0 [ 100.490623][ T1421] do_syscall_64+0x117/0x590 [ 100.490782][ T1421] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 100.490985][ T1421] INITIAL READ USE at: [ 100.491204][ T1421] __lock_acquire+0x378/0xc10 [ 100.491358][ T1421] lock_acquire.part.0+0xbc/0x260 [ 100.491552][ T1421] _raw_read_lock_bh+0x44/0x80 [ 100.491796][ T1421] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 100.491992][ T1421] inet6_fill_link_af+0x5c/0xe0 [ 100.492153][ T1421] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 100.492432][ T1421] rtnl_getlink+0x9c9/0xeb0 [ 100.492596][ T1421] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 100.492746][ T1421] netlink_rcv_skb+0x14e/0x3a0 [ 100.492923][ T1421] netlink_unicast+0x486/0x750 [ 100.493062][ T1421] netlink_sendmsg+0x735/0xc60 [ 100.493174][ T1421] ____sys_sendmsg+0x419/0x850 [ 100.493342][ T1421] ___sys_sendmsg+0x14e/0x1d0 [ 100.493454][ T1421] __sys_sendmsg+0x145/0x1f0 [ 100.493575][ T1421] do_syscall_64+0x117/0x590 [ 100.493741][ T1421] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 100.493881][ T1421] } [ 100.493929][ T1421] ... key at: [] __key.37+0x0/0x40 [ 100.494076][ T1421] ... acquired at: [ 100.494239][ T1421] __lock_acquire+0x508/0xc10 [ 100.494367][ T1421] lock_acquire.part.0+0xbc/0x260 [ 100.494496][ T1421] _raw_spin_lock+0x33/0x40 [ 100.494618][ T1421] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 100.494787][ T1421] __ipv6_dev_ac_inc+0x57e/0x930 [ 100.494897][ T1421] addrconf_join_anycast+0x1bc/0x260 [ 100.494990][ T1421] __ipv6_ifa_notify+0x75b/0xad0 [ 100.495080][ T1421] addrconf_dad_completed+0x14b/0xe10 [ 100.495220][ T1421] addrconf_dad_begin+0x2e1/0x540 [ 100.495310][ T1421] addrconf_dad_work+0x170/0x930 [ 100.495401][ T1421] process_one_work+0xdf8/0x1410 [ 100.495492][ T1421] worker_thread+0x4f1/0xd60 [ 100.495648][ T1421] kthread+0x367/0x460 [ 100.495716][ T1421] ret_from_fork+0x474/0x6b0 [ 100.495808][ T1421] ret_from_fork_asm+0x11/0x20 [ 100.495904][ T1421] [ 100.496002][ T1421] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 100.496096][ T1421] HARDIRQ-ON-W at: [ 100.496164][ T1421] __lock_acquire+0x378/0xc10 [ 100.496279][ T1421] lock_acquire.part.0+0xbc/0x260 [ 100.496446][ T1421] _raw_spin_lock+0x33/0x40 [ 100.496564][ T1421] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 100.496701][ T1421] __ipv6_dev_ac_inc+0x57e/0x930 [ 100.496869][ T1421] addrconf_join_anycast+0x1bc/0x260 [ 100.496980][ T1421] __ipv6_ifa_notify+0x75b/0xad0 [ 100.497098][ T1421] addrconf_dad_completed+0x14b/0xe10 [ 100.497297][ T1421] addrconf_dad_begin+0x2e1/0x540 [ 100.497446][ T1421] addrconf_dad_work+0x170/0x930 [ 100.497605][ T1421] process_one_work+0xdf8/0x1410 [ 100.497764][ T1421] worker_thread+0x4f1/0xd60 [ 100.498018][ T1421] kthread+0x367/0x460 [ 100.498145][ T1421] ret_from_fork+0x474/0x6b0 [ 100.498303][ T1421] ret_from_fork_asm+0x11/0x20 [ 100.498550][ T1421] SOFTIRQ-ON-W at: [ 100.498647][ T1421] __lock_acquire+0x378/0xc10 [ 100.498807][ T1421] lock_acquire.part.0+0xbc/0x260 [ 100.498974][ T1421] _raw_spin_lock+0x33/0x40 [ 100.499219][ T1421] __ipv6_dev_ac_dec+0x236/0x5d0 [ 100.499379][ T1421] addrconf_leave_anycast+0x1bc/0x260 [ 100.499540][ T1421] __ipv6_ifa_notify+0x6b4/0xad0 [ 100.499788][ T1421] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 100.499955][ T1421] addrconf_notify+0x339/0xf30 [ 100.500116][ T1421] notifier_call_chain+0xb0/0x320 [ 100.500365][ T1421] __netdev_upper_dev_link+0x3a5/0x590 [ 100.500526][ T1421] netdev_master_upper_dev_link+0x86/0xb0 [ 100.500717][ T1421] vrf_add_slave+0xdd/0x210 [vrf] [ 100.500972][ T1421] do_set_master+0x357/0x580 [ 100.501133][ T1421] do_setlink.isra.0+0xa31/0x2750 [ 100.501293][ T1421] rtnl_newlink+0x8d1/0xef0 [ 100.501542][ T1421] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 100.501701][ T1421] netlink_rcv_skb+0x14e/0x3a0 [ 100.501865][ T1421] netlink_unicast+0x486/0x750 [ 100.502098][ T1421] netlink_sendmsg+0x735/0xc60 [ 100.502256][ T1421] ____sys_sendmsg+0x419/0x850 [ 100.502419][ T1421] ___sys_sendmsg+0x14e/0x1d0 [ 100.502584][ T1421] __sys_sendmsg+0x145/0x1f0 [ 100.502833][ T1421] do_syscall_64+0x117/0x590 [ 100.502995][ T1421] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 100.503189][ T1421] INITIAL USE at: [ 100.503372][ T1421] __lock_acquire+0x378/0xc10 [ 100.503536][ T1421] lock_acquire.part.0+0xbc/0x260 [ 100.503694][ T1421] _raw_spin_lock+0x33/0x40 [ 100.503951][ T1421] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 100.504142][ T1421] __ipv6_dev_ac_inc+0x57e/0x930 [ 100.504300][ T1421] addrconf_join_anycast+0x1bc/0x260 [ 100.504535][ T1421] __ipv6_ifa_notify+0x75b/0xad0 [ 100.504696][ T1421] addrconf_dad_completed+0x14b/0xe10 [ 100.504863][ T1421] addrconf_dad_begin+0x2e1/0x540 [ 100.505105][ T1421] addrconf_dad_work+0x170/0x930 [ 100.505265][ T1421] process_one_work+0xdf8/0x1410 [ 100.505422][ T1421] worker_thread+0x4f1/0xd60 [ 100.505581][ T1421] kthread+0x367/0x460 [ 100.505798][ T1421] ret_from_fork+0x474/0x6b0 [ 100.505970][ T1421] ret_from_fork_asm+0x11/0x20 [ 100.506133][ T1421] } [ 100.506200][ T1421] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 100.506482][ T1421] ... acquired at: [ 100.506577][ T1421] mark_lock+0x1d7/0xa00 [ 100.506708][ T1421] mark_usage+0x105/0x170 [ 100.506928][ T1421] __lock_acquire+0x378/0xc10 [ 100.507058][ T1421] lock_acquire.part.0+0xbc/0x260 [ 100.507181][ T1421] _raw_spin_lock+0x33/0x40 [ 100.507307][ T1421] __ipv6_dev_ac_dec+0x236/0x5d0 [ 100.507515][ T1421] addrconf_leave_anycast+0x1bc/0x260 [ 100.507638][ T1421] __ipv6_ifa_notify+0x6b4/0xad0 [ 100.507764][ T1421] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 100.507898][ T1421] addrconf_notify+0x339/0xf30 [ 100.508109][ T1421] notifier_call_chain+0xb0/0x320 [ 100.508235][ T1421] __netdev_upper_dev_link+0x3a5/0x590 [ 100.508362][ T1421] netdev_master_upper_dev_link+0x86/0xb0 [ 100.508517][ T1421] vrf_add_slave+0xdd/0x210 [vrf] [ 100.508729][ T1421] do_set_master+0x357/0x580 [ 100.508863][ T1421] do_setlink.isra.0+0xa31/0x2750 [ 100.508989][ T1421] rtnl_newlink+0x8d1/0xef0 [ 100.509110][ T1421] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 100.509321][ T1421] netlink_rcv_skb+0x14e/0x3a0 [ 100.509451][ T1421] netlink_unicast+0x486/0x750 [ 100.509575][ T1421] netlink_sendmsg+0x735/0xc60 [ 100.509705][ T1421] ____sys_sendmsg+0x419/0x850 [ 100.509934][ T1421] ___sys_sendmsg+0x14e/0x1d0 [ 100.510066][ T1421] __sys_sendmsg+0x145/0x1f0 [ 100.510195][ T1421] do_syscall_64+0x117/0x590 [ 100.510323][ T1421] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 100.510558][ T1421] [ 100.510625][ T1421] [ 100.510625][ T1421] stack backtrace: [ 100.510790][ T1421] CPU: 2 UID: 0 PID: 1421 Comm: ip Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 100.510795][ T1421] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 100.510798][ T1421] Call Trace: [ 100.510800][ T1421] [ 100.510802][ T1421] dump_stack_lvl+0x6f/0xa0 [ 100.510807][ T1421] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 100.510812][ T1421] mark_lock_irq+0x989/0x9c0 [ 100.510817][ T1421] mark_lock+0x1d7/0xa00 [ 100.510819][ T1421] mark_usage+0x105/0x170 [ 100.510822][ T1421] __lock_acquire+0x378/0xc10 [ 100.510824][ T1421] ? __update_idle_core+0x30a/0x700 [ 100.510828][ T1421] lock_acquire.part.0+0xbc/0x260 [ 100.510830][ T1421] ? __ipv6_dev_ac_dec+0x236/0x5d0 [ 100.510833][ T1421] ? rcu_is_watching+0x15/0xd0 [ 100.510842][ T1421] ? do_raw_read_unlock+0x70/0x70 [ 100.510844][ T1421] ? lock_acquire+0x134/0x160 [ 100.510847][ T1421] _raw_spin_lock+0x33/0x40 [ 100.510850][ T1421] ? __ipv6_dev_ac_dec+0x236/0x5d0 [ 100.510852][ T1421] __ipv6_dev_ac_dec+0x236/0x5d0 [ 100.510855][ T1421] addrconf_leave_anycast+0x1bc/0x260 [ 100.510858][ T1421] ? inet6_dump_ifinfo+0x6e0/0x6e0 [ 100.510861][ T1421] ? __ipv6_isatap_ifid+0x210/0x210 [ 100.510864][ T1421] ? nlmsg_notify+0x62/0x250 [ 100.510867][ T1421] __ipv6_ifa_notify+0x6b4/0xad0 [ 100.510871][ T1421] ? cleanup_prefix_route+0x550/0x550 [ 100.510874][ T1421] ? find_held_lock+0x2b/0x80 [ 100.510878][ T1421] ? __lock_release.isra.0+0x6b/0x1a0 [ 100.510880][ T1421] ? __rwlock_init+0x150/0x150 [ 100.510883][ T1421] ? mark_held_locks+0x40/0x70 [ 100.510886][ T1421] ? addrconf_ifdown.isra.0+0xa70/0x15f0 [ 100.510889][ T1421] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 100.510894][ T1421] ? addrconf_dad_run+0x1b0/0x1b0 [ 100.510897][ T1421] ? neigh_flush_one+0x580/0x580 [ 100.510901][ T1421] addrconf_notify+0x339/0xf30 [ 100.510904][ T1421] ? team_port_get_rtnl+0x65/0xc0 [ 100.510909][ T1421] notifier_call_chain+0xb0/0x320 [ 100.510913][ T1421] __netdev_upper_dev_link+0x3a5/0x590 [ 100.510916][ T1421] ? netdev_wait_allrefs_any+0x570/0x570 [ 100.510920][ T1421] ? find_held_lock+0x2b/0x80 [ 100.510923][ T1421] ? __lock_acquire+0x508/0xc10 [ 100.510925][ T1421] ? __lock_acquire+0x508/0xc10 [ 100.510929][ T1421] netdev_master_upper_dev_link+0x86/0xb0 [ 100.510933][ T1421] ? netdev_upper_dev_link+0xb0/0xb0 [ 100.510935][ T1421] ? __lock_release.isra.0+0x6b/0x1a0 [ 100.510939][ T1421] vrf_add_slave+0xdd/0x210 [vrf] [ 100.510943][ T1421] ? rtnl_is_locked+0x15/0x20 [ 100.510946][ T1421] do_set_master+0x357/0x580 [ 100.510948][ T1421] ? kernel_text_address+0x149/0x170 [ 100.510952][ T1421] do_setlink.isra.0+0xa31/0x2750 [ 100.510956][ T1421] ? rtnl_link_get_size+0x350/0x350 [ 100.510960][ T1421] ? rcu_lockdep_current_cpu_online+0x39/0x1b0 [ 100.510963][ T1421] ? rcu_read_lock_any_held+0x3c/0x90 [ 100.510966][ T1421] ? validate_chain+0x38b/0xc20 [ 100.510968][ T1421] ? rcu_read_lock_any_held+0x66/0x90 [ 100.510970][ T1421] ? stack_depot_save_flags+0x367/0x770 [ 100.510974][ T1421] ? __kernel_text_address+0x12/0x30 [ 100.510977][ T1421] ? __lock_acquire+0x508/0xc10 [ 100.510980][ T1421] ? lock_acquire.part.0+0xbc/0x260 [ 100.510983][ T1421] ? rtnl_newlink+0x883/0xef0 [ 100.510986][ T1421] ? rcu_is_watching+0x15/0xd0 [ 100.510988][ T1421] ? lock_acquire+0x134/0x160 [ 100.510990][ T1421] ? rcu_is_watching+0x15/0xd0 [ 100.510993][ T1421] ? rcu_is_watching+0x15/0xd0 [ 100.510995][ T1421] ? trace_contention_end+0xb3/0x1a0 [ 100.510999][ T1421] ? __mutex_lock+0x1db/0x2010 [ 100.511001][ T1421] ? __mutex_lock+0x9b2/0x2010 [ 100.511004][ T1421] ? rtnl_newlink+0x883/0xef0 [ 100.511007][ T1421] ? ww_mutex_lock+0x160/0x160 [ 100.511009][ T1421] ? nla_get_range_signed+0x3d0/0x3d0 [ 100.511014][ T1421] ? __rtnl_newlink+0x3fa/0xa50 [ 100.511019][ T1421] rtnl_newlink+0x8d1/0xef0 [ 100.511022][ T1421] ? lock_acquire.part.0+0xbc/0x260 [ 100.511024][ T1421] ? find_held_lock+0x2b/0x80 [ 100.511027][ T1421] ? __rtnl_newlink+0xa50/0xa50 [ 100.511030][ T1421] ? mark_usage+0x61/0x170 [ 100.511032][ T1421] ? __lock_release.isra.0+0x6b/0x1a0 [ 100.511035][ T1421] ? lock_acquire.part.0+0xbc/0x260 [ 100.511037][ T1421] ? find_held_lock+0x2b/0x80 [ 100.511040][ T1421] ? __rtnl_newlink+0xa50/0xa50 [ 100.511042][ T1421] ? __lock_release.isra.0+0x6b/0x1a0 [ 100.511045][ T1421] ? __rtnl_newlink+0xa50/0xa50 [ 100.511047][ T1421] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 100.511050][ T1421] ? validate_chain+0x38b/0xc20 [ 100.511052][ T1421] ? rtnl_link_fill+0x920/0x920 [ 100.511054][ T1421] ? __lock_acquire+0x508/0xc10 [ 100.511058][ T1421] ? lock_acquire.part.0+0xbc/0x260 [ 100.511059][ T1421] ? find_held_lock+0x2b/0x80 [ 100.511063][ T1421] netlink_rcv_skb+0x14e/0x3a0 [ 100.511065][ T1421] ? rtnl_link_fill+0x920/0x920 [ 100.511068][ T1421] ? netlink_ack+0xcf0/0xcf0 [ 100.511072][ T1421] ? netlink_deliver_tap+0xc5/0x330 [ 100.511074][ T1421] ? netlink_deliver_tap+0x13c/0x330 [ 100.511077][ T1421] netlink_unicast+0x486/0x750 [ 100.511080][ T1421] ? netlink_attachskb+0x810/0x810 [ 100.511083][ T1421] ? __lock_acquire+0x508/0xc10 [ 100.511086][ T1421] netlink_sendmsg+0x735/0xc60 [ 100.511089][ T1421] ? netlink_unicast+0x750/0x750 [ 100.511092][ T1421] ? __might_fault+0x97/0x140 [ 100.511097][ T1421] ____sys_sendmsg+0x419/0x850 [ 100.511100][ T1421] ? copy_msghdr_from_user+0x2a0/0x460 [ 100.511103][ T1421] ? get_timestamp.constprop.0+0x390/0x390 [ 100.511105][ T1421] ? move_addr_to_kernel+0x40/0x40 [ 100.511108][ T1421] ? stack_depot_save_flags+0x367/0x770 [ 100.511110][ T1421] ? validate_chain+0x38b/0xc20 [ 100.511113][ T1421] ___sys_sendmsg+0x14e/0x1d0 [ 100.511116][ T1421] ? __call_rcu_common.constprop.0+0xb2/0xa10 [ 100.511119][ T1421] ? copy_msghdr_from_user+0x460/0x460 [ 100.511127][ T1421] __sys_sendmsg+0x145/0x1f0 [ 100.511130][ T1421] ? __sys_sendmsg_sock+0x20/0x20 [ 100.511131][ T1421] ? __call_rcu_common.constprop.0+0x3d1/0xa10 [ 100.511135][ T1421] ? do_raw_spin_unlock+0x59/0x250 [ 100.511138][ T1421] ? rcu_is_watching+0x15/0xd0 [ 100.511141][ T1421] do_syscall_64+0x117/0x590 [ 100.511142][ T1421] ? trace_hardirqs_off+0xd/0x30 [ 100.511146][ T1421] ? exc_page_fault+0xee/0x100 [ 100.511149][ T1421] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 100.511151][ T1421] RIP: 0033:0x7f41d9be208e [ 100.511156][ T1421] Code: 4d 89 d8 e8 94 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa [ 100.511158][ T1421] RSP: 002b:00007ffc92b1df60 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 100.511163][ T1421] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f41d9be208e [ 100.511165][ T1421] RDX: 0000000000000000 RSI: 00007ffc92b1e010 RDI: 0000000000000005 [ 100.511167][ T1421] RBP: 00007ffc92b1df70 R08: 0000000000000000 R09: 0000000000000000 [ 100.511168][ T1421] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a195bb7 [ 100.511170][ T1421] R13: 000000000049f620 R14: 0000000000000000 R15: 00007ffc92b1e6d0 [ 100.511175][ T1421] [ 100.551546][ T1421] ip (1421) used greatest stack depth: 23384 bytes left