[ 301.685245][ T3200] br0: port 1(veth1) entered blocking state [ 301.685538][ T3200] br0: port 1(veth1) entered disabled state [ 301.685743][ T3200] veth1: entered allmulticast mode [ 301.687210][ T3200] veth1: entered promiscuous mode [ 301.721419][ T3202] br0: port 2(veth2) entered blocking state [ 301.721641][ T3202] br0: port 2(veth2) entered disabled state [ 301.721988][ T3202] veth2: entered allmulticast mode [ 301.723383][ T3202] veth2: entered promiscuous mode [ 301.778117][ T39] br0: port 1(veth1) entered blocking state [ 301.778343][ T39] br0: port 1(veth1) entered forwarding state [ 301.807092][ T36] br0: port 2(veth2) entered blocking state [ 301.807309][ T36] br0: port 2(veth2) entered forwarding state [ 306.736817][ C1] [ 306.736945][ C1] ======================================================== [ 306.737087][ C1] WARNING: possible irq lock inversion dependency detected [ 306.737214][ C1] 7.1.0-rc5-virtme #1 Not tainted [ 306.737302][ C1] -------------------------------------------------------- [ 306.737444][ C1] swapper/1/0 just changed the state of lock: [ 306.737559][ C1] ff1100000bdb2578 (&ndev->lock){++-.}-{3:3}, at: addrconf_rs_timer+0xb0/0x770 [ 306.737737][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 306.737864][ C1] (acaddr_hash_lock){+.+.}-{3:3} [ 306.737866][ C1] [ 306.737866][ C1] [ 306.737866][ C1] and interrupts could create inverse lock ordering between them. [ 306.737866][ C1] [ 306.738196][ C1] [ 306.738196][ C1] other info that might help us debug this: [ 306.738333][ C1] Possible interrupt unsafe locking scenario: [ 306.738333][ C1] [ 306.738467][ C1] CPU0 CPU1 [ 306.738559][ C1] ---- ---- [ 306.738659][ C1] lock(acaddr_hash_lock); [ 306.738746][ C1] local_irq_disable(); [ 306.738861][ C1] lock(&ndev->lock); [ 306.738978][ C1] lock(acaddr_hash_lock); [ 306.739090][ C1] [ 306.739158][ C1] lock(&ndev->lock); [ 306.739224][ C1] [ 306.739224][ C1] *** DEADLOCK *** [ 306.739224][ C1] [ 306.739350][ C1] 1 lock held by swapper/1/0: [ 306.739444][ C1] #0: ffa00000001d0c90 ((&ndev->rs_timer)){+.-.}-{0:0}, at: call_timer_fn+0x113/0x4f0 [ 306.739614][ C1] [ 306.739614][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 306.739775][ C1] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 306.739871][ C1] HARDIRQ-ON-W at: [ 306.739937][ C1] __lock_acquire+0x378/0xc10 [ 306.740049][ C1] lock_acquire.part.0+0xbc/0x260 [ 306.740158][ C1] _raw_spin_lock+0x33/0x40 [ 306.740272][ C1] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 306.740413][ C1] __ipv6_dev_ac_inc+0x57e/0x930 [ 306.740521][ C1] addrconf_join_anycast+0x1bc/0x260 [ 306.740639][ C1] __ipv6_ifa_notify+0x75b/0xad0 [ 306.740755][ C1] addrconf_dad_completed+0x14b/0xe10 [ 306.740888][ C1] addrconf_dad_work+0x3c1/0x930 [ 306.741004][ C1] process_one_work+0xdf8/0x1410 [ 306.741114][ C1] worker_thread+0x4f1/0xd60 [ 306.741222][ C1] kthread+0x367/0x460 [ 306.741331][ C1] ret_from_fork+0x474/0x6b0 [ 306.741450][ C1] ret_from_fork_asm+0x11/0x20 [ 306.741560][ C1] SOFTIRQ-ON-W at: [ 306.741632][ C1] __lock_acquire+0x378/0xc10 [ 306.741744][ C1] lock_acquire.part.0+0xbc/0x260 [ 306.741852][ C1] _raw_spin_lock+0x33/0x40 [ 306.741963][ C1] __ipv6_dev_ac_dec+0x236/0x5d0 [ 306.742076][ C1] addrconf_leave_anycast+0x1bc/0x260 [ 306.742206][ C1] __ipv6_ifa_notify+0x6b4/0xad0 [ 306.742313][ C1] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 306.742444][ C1] addrconf_notify+0x2c8/0xf30 [ 306.742557][ C1] notifier_call_chain+0xb0/0x320 [ 306.742705][ C1] __dev_notify_flags+0x165/0x280 [ 306.742816][ C1] netif_change_flags+0xfe/0x190 [ 306.742929][ C1] do_setlink.isra.0+0x1cc3/0x2750 [ 306.743041][ C1] rtnl_newlink+0x8d1/0xef0 [ 306.743151][ C1] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 306.743264][ C1] netlink_rcv_skb+0x14e/0x3a0 [ 306.743378][ C1] netlink_unicast+0x486/0x750 [ 306.743490][ C1] netlink_sendmsg+0x735/0xc60 [ 306.743614][ C1] ____sys_sendmsg+0x419/0x850 [ 306.743727][ C1] ___sys_sendmsg+0x14e/0x1d0 [ 306.743841][ C1] __sys_sendmsg+0x145/0x1f0 [ 306.743951][ C1] do_syscall_64+0x117/0x590 [ 306.744058][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 306.744188][ C1] INITIAL USE at: [ 306.744254][ C1] __lock_acquire+0x378/0xc10 [ 306.744364][ C1] lock_acquire.part.0+0xbc/0x260 [ 306.744483][ C1] _raw_spin_lock+0x33/0x40 [ 306.744601][ C1] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 306.744736][ C1] __ipv6_dev_ac_inc+0x57e/0x930 [ 306.744843][ C1] addrconf_join_anycast+0x1bc/0x260 [ 306.744950][ C1] __ipv6_ifa_notify+0x75b/0xad0 [ 306.745060][ C1] addrconf_dad_completed+0x14b/0xe10 [ 306.745171][ C1] addrconf_dad_work+0x3c1/0x930 [ 306.745279][ C1] process_one_work+0xdf8/0x1410 [ 306.745391][ C1] worker_thread+0x4f1/0xd60 [ 306.745504][ C1] kthread+0x367/0x460 [ 306.745624][ C1] ret_from_fork+0x474/0x6b0 [ 306.745742][ C1] ret_from_fork_asm+0x11/0x20 [ 306.745851][ C1] } [ 306.745895][ C1] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 306.746027][ C1] ... acquired at: [ 306.746091][ C1] __lock_acquire+0x508/0xc10 [ 306.746183][ C1] lock_acquire.part.0+0xbc/0x260 [ 306.746271][ C1] _raw_spin_lock+0x33/0x40 [ 306.746361][ C1] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 306.746466][ C1] __ipv6_dev_ac_inc+0x57e/0x930 [ 306.746555][ C1] addrconf_join_anycast+0x1bc/0x260 [ 306.746652][ C1] __ipv6_ifa_notify+0x75b/0xad0 [ 306.746737][ C1] addrconf_dad_completed+0x14b/0xe10 [ 306.746825][ C1] addrconf_dad_work+0x3c1/0x930 [ 306.746909][ C1] process_one_work+0xdf8/0x1410 [ 306.746999][ C1] worker_thread+0x4f1/0xd60 [ 306.747088][ C1] kthread+0x367/0x460 [ 306.747156][ C1] ret_from_fork+0x474/0x6b0 [ 306.747248][ C1] ret_from_fork_asm+0x11/0x20 [ 306.747335][ C1] [ 306.747381][ C1] -> (&ndev->lock){++-.}-{3:3} { [ 306.747472][ C1] HARDIRQ-ON-W at: [ 306.747537][ C1] __lock_acquire+0x378/0xc10 [ 306.747655][ C1] lock_acquire.part.0+0xbc/0x260 [ 306.747768][ C1] _raw_write_lock_bh+0x38/0x50 [ 306.747876][ C1] addrconf_permanent_addr+0x108/0x9c0 [ 306.747988][ C1] addrconf_notify+0x151/0xf30 [ 306.748106][ C1] notifier_call_chain+0xb0/0x320 [ 306.748215][ C1] __dev_notify_flags+0xde/0x280 [ 306.748327][ C1] netif_change_flags+0xfe/0x190 [ 306.748445][ C1] do_setlink.isra.0+0x1cc3/0x2750 [ 306.748556][ C1] rtnl_newlink+0x8d1/0xef0 [ 306.748673][ C1] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 306.748785][ C1] netlink_rcv_skb+0x14e/0x3a0 [ 306.748891][ C1] netlink_unicast+0x486/0x750 [ 306.748997][ C1] netlink_sendmsg+0x735/0xc60 [ 306.749104][ C1] ____sys_sendmsg+0x419/0x850 [ 306.749211][ C1] ___sys_sendmsg+0x14e/0x1d0 [ 306.749320][ C1] __sys_sendmsg+0x145/0x1f0 [ 306.749435][ C1] do_syscall_64+0x117/0x590 [ 306.749544][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 306.749678][ C1] HARDIRQ-ON-R at: [ 306.749746][ C1] __lock_acquire+0x378/0xc10 [ 306.749856][ C1] lock_acquire.part.0+0xbc/0x260 [ 306.749972][ C1] _raw_read_lock_bh+0x44/0x80 [ 306.750078][ C1] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 306.750206][ C1] inet6_fill_link_af+0x5c/0xe0 [ 306.750313][ C1] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 306.750443][ C1] rtnl_getlink+0x9c9/0xeb0 [ 306.750555][ C1] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 306.750672][ C1] netlink_rcv_skb+0x14e/0x3a0 [ 306.750778][ C1] netlink_unicast+0x486/0x750 [ 306.750884][ C1] netlink_sendmsg+0x735/0xc60 [ 306.750990][ C1] ____sys_sendmsg+0x419/0x850 [ 306.751101][ C1] ___sys_sendmsg+0x14e/0x1d0 [ 306.751217][ C1] __sys_sendmsg+0x145/0x1f0 [ 306.751328][ C1] do_syscall_64+0x117/0x590 [ 306.751440][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 306.751572][ C1] IN-SOFTIRQ-W at: [ 306.751635][ C1] __lock_acquire+0x378/0xc10 [ 306.751741][ C1] lock_acquire.part.0+0xbc/0x260 [ 306.751848][ C1] _raw_write_lock+0x33/0x40 [ 306.751959][ C1] addrconf_rs_timer+0xb0/0x770 [ 306.752070][ C1] call_timer_fn+0x163/0x4f0 [ 306.752184][ C1] __run_timers+0x68f/0xab0 [ 306.752292][ C1] run_timer_softirq+0xf0/0x160 [ 306.752403][ C1] handle_softirqs+0x1d8/0x940 [ 306.752513][ C1] __irq_exit_rcu+0x103/0x1c0 [ 306.752628][ C1] irq_exit_rcu+0xe/0x30 [ 306.752740][ C1] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 306.752871][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 306.753001][ C1] pv_native_safe_halt+0xf/0x10 [ 306.753116][ C1] default_idle+0x9/0x10 [ 306.753228][ C1] default_idle_call+0x6e/0xb0 [ 306.753334][ C1] cpuidle_idle_call.constprop.0+0x237/0x410 [ 306.753465][ C1] do_idle+0xf5/0x160 [ 306.753548][ C1] cpu_startup_entry+0x53/0x70 [ 306.753661][ C1] start_secondary+0x204/0x2b0 [ 306.753767][ C1] common_startup_64+0x13e/0x148 [ 306.753884][ C1] INITIAL USE at: [ 306.753947][ C1] __lock_acquire+0x378/0xc10 [ 306.754052][ C1] lock_acquire.part.0+0xbc/0x260 [ 306.754157][ C1] _raw_write_lock_bh+0x38/0x50 [ 306.754261][ C1] addrconf_permanent_addr+0x108/0x9c0 [ 306.754372][ C1] addrconf_notify+0x151/0xf30 [ 306.754485][ C1] notifier_call_chain+0xb0/0x320 [ 306.754601][ C1] __dev_notify_flags+0xde/0x280 [ 306.754712][ C1] netif_change_flags+0xfe/0x190 [ 306.754819][ C1] do_setlink.isra.0+0x1cc3/0x2750 [ 306.754929][ C1] rtnl_newlink+0x8d1/0xef0 [ 306.755041][ C1] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 306.755151][ C1] netlink_rcv_skb+0x14e/0x3a0 [ 306.755261][ C1] netlink_unicast+0x486/0x750 [ 306.755376][ C1] netlink_sendmsg+0x735/0xc60 [ 306.755483][ C1] ____sys_sendmsg+0x419/0x850 [ 306.755596][ C1] ___sys_sendmsg+0x14e/0x1d0 [ 306.755709][ C1] __sys_sendmsg+0x145/0x1f0 [ 306.755819][ C1] do_syscall_64+0x117/0x590 [ 306.755933][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 306.756063][ C1] INITIAL READ USE at: [ 306.756131][ C1] __lock_acquire+0x378/0xc10 [ 306.756240][ C1] lock_acquire.part.0+0xbc/0x260 [ 306.756356][ C1] _raw_read_lock_bh+0x44/0x80 [ 306.756462][ C1] inet6_fill_ifla6_attrs+0x1aee/0x21e0 [ 306.756596][ C1] inet6_fill_link_af+0x5c/0xe0 [ 306.756707][ C1] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 306.756833][ C1] rtnl_getlink+0x9c9/0xeb0 [ 306.756942][ C1] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 306.757050][ C1] netlink_rcv_skb+0x14e/0x3a0 [ 306.757160][ C1] netlink_unicast+0x486/0x750 [ 306.757273][ C1] netlink_sendmsg+0x735/0xc60 [ 306.757385][ C1] ____sys_sendmsg+0x419/0x850 [ 306.757494][ C1] ___sys_sendmsg+0x14e/0x1d0 [ 306.757605][ C1] __sys_sendmsg+0x145/0x1f0 [ 306.757712][ C1] do_syscall_64+0x117/0x590 [ 306.757816][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 306.757945][ C1] } [ 306.757992][ C1] ... key at: [] __key.37+0x0/0x40 [ 306.758123][ C1] ... acquired at: [ 306.758185][ C1] mark_lock+0x1d7/0xa00 [ 306.758271][ C1] mark_usage+0x42/0x170 [ 306.758357][ C1] __lock_acquire+0x378/0xc10 [ 306.758446][ C1] lock_acquire.part.0+0xbc/0x260 [ 306.758534][ C1] _raw_write_lock+0x33/0x40 [ 306.758626][ C1] addrconf_rs_timer+0xb0/0x770 [ 306.758719][ C1] call_timer_fn+0x163/0x4f0 [ 306.758801][ C1] __run_timers+0x68f/0xab0 [ 306.758884][ C1] run_timer_softirq+0xf0/0x160 [ 306.758967][ C1] handle_softirqs+0x1d8/0x940 [ 306.759050][ C1] __irq_exit_rcu+0x103/0x1c0 [ 306.759135][ C1] irq_exit_rcu+0xe/0x30 [ 306.759222][ C1] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 306.759332][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 306.759439][ C1] pv_native_safe_halt+0xf/0x10 [ 306.759522][ C1] default_idle+0x9/0x10 [ 306.759610][ C1] default_idle_call+0x6e/0xb0 [ 306.759699][ C1] cpuidle_idle_call.constprop.0+0x237/0x410 [ 306.759803][ C1] do_idle+0xf5/0x160 [ 306.759865][ C1] cpu_startup_entry+0x53/0x70 [ 306.759952][ C1] start_secondary+0x204/0x2b0 [ 306.760041][ C1] common_startup_64+0x13e/0x148 [ 306.760129][ C1] [ 306.760170][ C1] [ 306.760170][ C1] stack backtrace: [ 306.760274][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 306.760277][ C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 306.760279][ C1] Call Trace: [ 306.760281][ C1] [ 306.760284][ C1] dump_stack_lvl+0x6f/0xa0 [ 306.760288][ C1] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 306.760291][ C1] mark_lock_irq+0x989/0x9c0 [ 306.760294][ C1] mark_lock+0x1d7/0xa00 [ 306.760296][ C1] mark_usage+0x42/0x170 [ 306.760298][ C1] __lock_acquire+0x378/0xc10 [ 306.760299][ C1] ? add_chain_cache+0x12d/0x570 [ 306.760301][ C1] lock_acquire.part.0+0xbc/0x260 [ 306.760303][ C1] ? addrconf_rs_timer+0xb0/0x770 [ 306.760305][ C1] ? rcu_is_watching+0x15/0xd0 [ 306.760308][ C1] ? lock_acquire+0x134/0x160 [ 306.760309][ C1] ? ipv6_get_lladdr+0x3f0/0x3f0 [ 306.760311][ C1] _raw_write_lock+0x33/0x40 [ 306.760313][ C1] ? addrconf_rs_timer+0xb0/0x770 [ 306.760315][ C1] addrconf_rs_timer+0xb0/0x770 [ 306.760317][ C1] ? lock_acquire.part.0+0xbc/0x260 [ 306.760318][ C1] ? ipv6_get_lladdr+0x3f0/0x3f0 [ 306.760321][ C1] ? lock_acquire+0x134/0x160 [ 306.760322][ C1] ? ipv6_get_lladdr+0x3f0/0x3f0 [ 306.760324][ C1] call_timer_fn+0x163/0x4f0 [ 306.760326][ C1] ? detach_if_pending+0x1d0/0x1d0 [ 306.760327][ C1] ? debug_object_active_state+0x430/0x430 [ 306.760331][ C1] ? find_held_lock+0x2b/0x80 [ 306.760334][ C1] ? __lock_release.isra.0+0x6b/0x1a0 [ 306.760336][ C1] ? rcu_is_watching+0x15/0xd0 [ 306.760338][ C1] __run_timers+0x68f/0xab0 [ 306.760340][ C1] ? ipv6_get_lladdr+0x3f0/0x3f0 [ 306.760342][ C1] ? __bpf_trace_itimer_expire+0x10/0x10 [ 306.760344][ C1] ? __lock_acquire+0x508/0xc10 [ 306.760347][ C1] ? __rwlock_init+0x150/0x150 [ 306.760351][ C1] run_timer_softirq+0xf0/0x160 [ 306.760354][ C1] ? __run_timers+0xab0/0xab0 [ 306.760356][ C1] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 306.760360][ C1] ? rcu_is_watching+0x15/0xd0 [ 306.760362][ C1] handle_softirqs+0x1d8/0x940 [ 306.760363][ C1] ? find_held_lock+0x2b/0x80 [ 306.760365][ C1] ? __lock_release.isra.0+0x6b/0x1a0 [ 306.760367][ C1] ? _local_bh_enable+0xd0/0xd0 [ 306.760369][ C1] __irq_exit_rcu+0x103/0x1c0 [ 306.760370][ C1] irq_exit_rcu+0xe/0x30 [ 306.760372][ C1] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 306.760374][ C1] [ 306.760374][ C1] [ 306.760375][ C1] ? rcu_is_watching+0x15/0xd0 [ 306.760377][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 306.760379][ C1] RIP: 0010:pv_native_safe_halt+0xf/0x10 [ 306.760382][ C1] Code: 48 8b 3d 44 93 00 02 e8 1f 00 00 00 48 2b 05 c8 31 a3 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 43 b4 22 00 fb f4 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01 [ 306.760383][ C1] RSP: 0018:ffa0000000147de8 EFLAGS: 00000296 [ 306.760386][ C1] RAX: 000000000145e269 RBX: ff11000001bb2340 RCX: ffffffff9aad9667 [ 306.760387][ C1] RDX: ff11000001bb2340 RSI: ffffffff9d80221d RDI: ffffffff9d26f6c0 [ 306.760388][ C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 306.760389][ C1] R10: 0000000000000001 R11: 0000000000000001 R12: 1ff4000000028fc0 [ 306.760390][ C1] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 [ 306.760391][ C1] ? cpuidle_idle_call.constprop.0+0x237/0x410 [ 306.760393][ C1] ? lockdep_hardirqs_on+0x8c/0x130 [ 306.760395][ C1] default_idle+0x9/0x10 [ 306.760397][ C1] default_idle_call+0x6e/0xb0 [ 306.760399][ C1] cpuidle_idle_call.constprop.0+0x237/0x410 [ 306.760400][ C1] ? arch_cpu_idle_exit+0x40/0x40 [ 306.760402][ C1] ? mark_tsc_async_resets+0x30/0x30 [ 306.760403][ C1] ? rcu_is_watching+0x15/0xd0 [ 306.760405][ C1] do_idle+0xf5/0x160 [ 306.760407][ C1] cpu_startup_entry+0x53/0x70 [ 306.760408][ C1] start_secondary+0x204/0x2b0 [ 306.760410][ C1] ? set_cpu_sibling_map+0x1fb0/0x1fb0 [ 306.760412][ C1] common_startup_64+0x13e/0x148 [ 306.760415][ C1] [ 420.685069][ T4531] br0: port 1(veth1) entered disabled state [ 425.728855][ T4536] br0: port 1(veth1) entered forwarding state [ 430.804478][ T4544] br0: vlan filtering disabled, automatically disabling multicast vlan snooping [ 441.001005][ T4568] br0: vlan filtering disabled, automatically disabling multicast vlan snooping [ 441.041743][ T4575] br0: port 2(veth2) entered disabled state [ 441.057845][ T4576] br0: port 1(veth1) entered disabled state [ 441.080032][ T4577] veth2: left allmulticast mode [ 441.080142][ T4577] veth2: left promiscuous mode [ 441.080283][ T4577] br0: port 2(veth2) entered disabled state [ 441.080779][ T4577] veth1: left allmulticast mode [ 441.080867][ T4577] veth1: left promiscuous mode [ 441.080999][ T4577] br0: port 1(veth1) entered disabled state