[ 30.815656][ T318] br: port 1(veth1) entered blocking state [ 30.816005][ T318] br: port 1(veth1) entered disabled state [ 30.823218][ T318] veth1: entered allmulticast mode [ 30.825290][ T318] veth1: entered promiscuous mode [ 30.828429][ T49] br: port 1(veth1) entered blocking state [ 30.828732][ T49] br: port 1(veth1) entered forwarding state [ 30.948575][ T320] br: port 2(veth3) entered blocking state [ 30.948834][ T320] br: port 2(veth3) entered disabled state [ 30.949064][ T320] veth3: entered allmulticast mode [ 30.950896][ T320] veth3: entered promiscuous mode [ 30.953340][ T51] br: port 2(veth3) entered blocking state [ 30.953604][ T51] br: port 2(veth3) entered forwarding state [ 31.072897][ T321] br: port 3(veth4) entered blocking state [ 31.073281][ T321] br: port 3(veth4) entered disabled state [ 31.074566][ T321] veth4: entered allmulticast mode [ 31.077622][ T321] veth4: entered promiscuous mode [ 31.082129][ T49] br: port 3(veth4) entered blocking state [ 31.082482][ T49] br: port 3(veth4) entered forwarding state [ 45.864569][ C2] [ 45.864722][ C2] ======================================================== [ 45.864952][ C2] WARNING: possible irq lock inversion dependency detected [ 45.865185][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 45.865337][ C2] -------------------------------------------------------- [ 45.865557][ C2] swapper/2/0 just changed the state of lock: [ 45.865749][ C2] ffff88800891ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.866139][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 45.866366][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 45.866370][ C2] [ 45.866370][ C2] [ 45.866370][ C2] and interrupts could create inverse lock ordering between them. [ 45.866370][ C2] [ 45.866918][ C2] [ 45.866918][ C2] other info that might help us debug this: [ 45.867136][ C2] Chain exists of: [ 45.867136][ C2] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 45.867136][ C2] [ 45.867481][ C2] Possible interrupt unsafe locking scenario: [ 45.867481][ C2] [ 45.867708][ C2] CPU0 CPU1 [ 45.867861][ C2] ---- ---- [ 45.868017][ C2] lock(&p->alloc_lock); [ 45.868124][ C2] local_irq_disable(); [ 45.868298][ C2] lock(&br->lock); [ 45.868477][ C2] lock(lweventlist_lock); [ 45.868651][ C2] [ 45.868755][ C2] lock(&br->lock); [ 45.868865][ C2] [ 45.868865][ C2] *** DEADLOCK *** [ 45.868865][ C2] [ 45.869083][ C2] 1 lock held by swapper/2/0: [ 45.869225][ C2] #0: ffffc90000230b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 45.869504][ C2] [ 45.869504][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 45.869740][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.869882][ C2] HARDIRQ-ON-W at: [ 45.869990][ C2] __lock_acquire+0x797/0x1570 [ 45.870171][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.870344][ C2] _raw_spin_lock+0x30/0x40 [ 45.870519][ C2] set_mems_allowed+0x1d/0x210 [ 45.870691][ C2] kernel_init_freeable+0x72/0x310 [ 45.870863][ C2] kernel_init+0x20/0x200 [ 45.871040][ C2] ret_from_fork+0x31/0x70 [ 45.871216][ C2] ret_from_fork_asm+0x1a/0x30 [ 45.871387][ C2] SOFTIRQ-ON-W at: [ 45.871491][ C2] __lock_acquire+0x797/0x1570 [ 45.871663][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.871835][ C2] _raw_spin_lock+0x30/0x40 [ 45.872008][ C2] set_mems_allowed+0x1d/0x210 [ 45.872200][ C2] kernel_init_freeable+0x72/0x310 [ 45.872371][ C2] kernel_init+0x20/0x200 [ 45.872545][ C2] ret_from_fork+0x31/0x70 [ 45.872719][ C2] ret_from_fork_asm+0x1a/0x30 [ 45.872891][ C2] INITIAL USE at: [ 45.872994][ C2] __lock_acquire+0x797/0x1570 [ 45.873167][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.873340][ C2] _raw_spin_lock+0x30/0x40 [ 45.873515][ C2] set_mems_allowed+0x1d/0x210 [ 45.873686][ C2] kernel_init_freeable+0x72/0x310 [ 45.873862][ C2] kernel_init+0x20/0x200 [ 45.874035][ C2] ret_from_fork+0x31/0x70 [ 45.874212][ C2] ret_from_fork_asm+0x1a/0x30 [ 45.874384][ C2] } [ 45.874458][ C2] ... key at: [] __key.387+0x0/0x40 [ 45.874665][ C2] ... acquired at: [ 45.874770][ C2] __lock_acquire+0xaf0/0x1570 [ 45.874911][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.875051][ C2] _raw_spin_lock+0x30/0x40 [ 45.875188][ C2] __get_task_comm+0x27/0x70 [ 45.875329][ C2] ref_tracker_alloc+0x2ee/0x490 [ 45.875467][ C2] linkwatch_fire_event+0x196/0x200 [ 45.875605][ C2] veth_newlink+0x367/0x830 [veth] [ 45.875752][ C2] rtnl_newlink_create+0x341/0x850 [ 45.875890][ C2] __rtnl_newlink+0xac9/0xd80 [ 45.876031][ C2] rtnl_newlink+0x63/0xa0 [ 45.876169][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.876309][ C2] netlink_rcv_skb+0x130/0x360 [ 45.876453][ C2] netlink_unicast+0x449/0x710 [ 45.876592][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.876732][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 45.876873][ C2] ___sys_sendmsg+0xee/0x170 [ 45.877013][ C2] __sys_sendmsg+0xcd/0x170 [ 45.877151][ C2] do_syscall_64+0xc6/0x1e0 [ 45.877290][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.877464][ C2] [ 45.877533][ C2] -> (lweventlist_lock){....}-{2:2} { [ 45.877678][ C2] INITIAL USE at: [ 45.877781][ C2] __lock_acquire+0x797/0x1570 [ 45.877953][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.878128][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.878301][ C2] linkwatch_sync_dev+0x29/0x1f0 [ 45.878473][ C2] rtnl_getlink+0x4c9/0x970 [ 45.878652][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.878824][ C2] netlink_rcv_skb+0x130/0x360 [ 45.878998][ C2] netlink_unicast+0x449/0x710 [ 45.879169][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.879344][ C2] __sys_sendto+0x37d/0x410 [ 45.879515][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 45.879691][ C2] do_syscall_64+0xc6/0x1e0 [ 45.879863][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.880067][ C2] } [ 45.880135][ C2] ... key at: [] lweventlist_lock+0x18/0x60 [ 45.880339][ C2] ... acquired at: [ 45.880442][ C2] __lock_acquire+0xaf0/0x1570 [ 45.880580][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.880721][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.880860][ C2] linkwatch_fire_event+0x74/0x200 [ 45.881000][ C2] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 45.881212][ C2] br_set_mac_address+0x1f3/0x260 [bridge] [ 45.881415][ C2] dev_set_mac_address+0x28a/0x410 [ 45.881552][ C2] dev_set_mac_address_user+0x31/0x50 [ 45.881694][ C2] do_setlink+0x17b4/0x21e0 [ 45.881834][ C2] rtnl_setlink+0x1f7/0x310 [ 45.881973][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.882112][ C2] netlink_rcv_skb+0x130/0x360 [ 45.882264][ C2] netlink_unicast+0x449/0x710 [ 45.882400][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.882538][ C2] __sys_sendto+0x37d/0x410 [ 45.882675][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 45.882813][ C2] do_syscall_64+0xc6/0x1e0 [ 45.882950][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.883123][ C2] [ 45.883193][ C2] -> (&br->lock){+.-.}-{2:2} { [ 45.883332][ C2] HARDIRQ-ON-W at: [ 45.883439][ C2] __lock_acquire+0x797/0x1570 [ 45.883611][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.883784][ C2] _raw_spin_lock_bh+0x38/0x50 [ 45.883955][ C2] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 45.884202][ C2] br_dev_open+0xa2/0x120 [bridge] [ 45.884412][ C2] __dev_open+0x221/0x430 [ 45.884586][ C2] __dev_change_flags+0x469/0x6c0 [ 45.884761][ C2] rtnl_configure_link+0x118/0x200 [ 45.884934][ C2] rtnl_newlink_create+0x36e/0x850 [ 45.885106][ C2] __rtnl_newlink+0xac9/0xd80 [ 45.885287][ C2] rtnl_newlink+0x63/0xa0 [ 45.885465][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.885635][ C2] netlink_rcv_skb+0x130/0x360 [ 45.885810][ C2] netlink_unicast+0x449/0x710 [ 45.885984][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.886155][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 45.886326][ C2] ___sys_sendmsg+0xee/0x170 [ 45.886504][ C2] __sys_sendmsg+0xcd/0x170 [ 45.886677][ C2] do_syscall_64+0xc6/0x1e0 [ 45.886849][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.887056][ C2] IN-SOFTIRQ-W at: [ 45.887159][ C2] __lock_acquire+0x797/0x1570 [ 45.887330][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.887503][ C2] _raw_spin_lock+0x30/0x40 [ 45.887681][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.887923][ C2] call_timer_fn+0x13b/0x230 [ 45.888095][ C2] __run_timers+0x545/0x810 [ 45.888271][ C2] timer_expire_remote+0x9b/0xe0 [ 45.888441][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 45.888613][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.888790][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 45.888964][ C2] __do_softirq+0x1f8/0x5df [ 45.889138][ C2] irq_exit_rcu+0x97/0xc0 [ 45.889314][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.889604][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.889811][ C2] default_idle+0xf/0x20 [ 45.889989][ C2] default_idle_call+0x6d/0xb0 [ 45.890244][ C2] cpuidle_idle_call+0x1f4/0x280 [ 45.890417][ C2] do_idle+0xf9/0x160 [ 45.890555][ C2] cpu_startup_entry+0x54/0x60 [ 45.890729][ C2] start_secondary+0x21c/0x2b0 [ 45.890983][ C2] common_startup_64+0x12c/0x138 [ 45.891156][ C2] INITIAL USE at: [ 45.891265][ C2] __lock_acquire+0x797/0x1570 [ 45.891439][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.891775][ C2] _raw_spin_lock_bh+0x38/0x50 [ 45.891948][ C2] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 45.892198][ C2] br_dev_open+0xa2/0x120 [bridge] [ 45.892486][ C2] __dev_open+0x221/0x430 [ 45.892662][ C2] __dev_change_flags+0x469/0x6c0 [ 45.892834][ C2] rtnl_configure_link+0x118/0x200 [ 45.893008][ C2] rtnl_newlink_create+0x36e/0x850 [ 45.893178][ C2] __rtnl_newlink+0xac9/0xd80 [ 45.893354][ C2] rtnl_newlink+0x63/0xa0 [ 45.893523][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.893781][ C2] netlink_rcv_skb+0x130/0x360 [ 45.893954][ C2] netlink_unicast+0x449/0x710 [ 45.894125][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.894380][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 45.894551][ C2] ___sys_sendmsg+0xee/0x170 [ 45.894723][ C2] __sys_sendmsg+0xcd/0x170 [ 45.894976][ C2] do_syscall_64+0xc6/0x1e0 [ 45.895153][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.895359][ C2] } [ 45.895428][ C2] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 45.895781][ C2] ... acquired at: [ 45.895882][ C2] mark_lock+0x28d/0x3e0 [ 45.896019][ C2] mark_usage+0xd9/0x2a0 [ 45.896155][ C2] __lock_acquire+0x797/0x1570 [ 45.896374][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.896518][ C2] _raw_spin_lock+0x30/0x40 [ 45.896655][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.896865][ C2] call_timer_fn+0x13b/0x230 [ 45.897084][ C2] __run_timers+0x545/0x810 [ 45.897225][ C2] timer_expire_remote+0x9b/0xe0 [ 45.897363][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 45.897501][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.897720][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 45.897857][ C2] __do_softirq+0x1f8/0x5df [ 45.897995][ C2] irq_exit_rcu+0x97/0xc0 [ 45.898132][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.898386][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.898556][ C2] default_idle+0xf/0x20 [ 45.898692][ C2] default_idle_call+0x6d/0xb0 [ 45.898828][ C2] cpuidle_idle_call+0x1f4/0x280 [ 45.898969][ C2] do_idle+0xf9/0x160 [ 45.899073][ C2] cpu_startup_entry+0x54/0x60 [ 45.899209][ C2] start_secondary+0x21c/0x2b0 [ 45.899346][ C2] common_startup_64+0x12c/0x138 [ 45.899483][ C2] [ 45.899631][ C2] [ 45.899631][ C2] stack backtrace: [ 45.899800][ C2] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-virtme #1 [ 45.900005][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.900391][ C2] Call Trace: [ 45.900494][ C2] [ 45.900567][ C2] dump_stack_lvl+0x82/0xd0 [ 45.900707][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 45.900957][ C2] ? common_startup_64+0x12c/0x138 [ 45.901094][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 45.901270][ C2] ? __pfx_usage_skip+0x10/0x10 [ 45.901407][ C2] ? __pfx_usage_match+0x10/0x10 [ 45.901624][ C2] ? arch_stack_walk+0x8c/0xf0 [ 45.901766][ C2] mark_lock_irq+0x4cd/0xa10 [ 45.901903][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 45.902040][ C2] ? stack_trace_save+0x94/0xd0 [ 45.902191][ C2] ? add_chain_cache+0x248/0x8b0 [ 45.902502][ C2] ? save_trace+0x8f/0x5b0 [ 45.902640][ C2] mark_lock+0x28d/0x3e0 [ 45.902743][ C2] mark_usage+0xd9/0x2a0 [ 45.902849][ C2] __lock_acquire+0x797/0x1570 [ 45.902987][ C2] ? __lock_acquire+0xaf0/0x1570 [ 45.903123][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.903362][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.903498][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.903785][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.903922][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 45.904059][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.904267][ C2] ? lock_acquire+0x32/0xc0 [ 45.904486][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.904693][ C2] _raw_spin_lock+0x30/0x40 [ 45.904828][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.905034][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.905248][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.905487][ C2] call_timer_fn+0x13b/0x230 [ 45.905623][ C2] ? call_timer_fn+0xe8/0x230 [ 45.905839][ C2] ? call_timer_fn+0xe8/0x230 [ 45.905981][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 45.906118][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.906258][ C2] __run_timers+0x545/0x810 [ 45.906475][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.906715][ C2] ? __pfx___run_timers+0x10/0x10 [ 45.906855][ C2] ? __lock_release+0x103/0x460 [ 45.906992][ C2] ? do_raw_spin_lock+0x131/0x270 [ 45.907207][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.907342][ C2] ? lock_acquire+0x32/0xc0 [ 45.907479][ C2] ? timer_expire_remote+0x93/0xe0 [ 45.907651][ C2] timer_expire_remote+0x9b/0xe0 [ 45.907883][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 45.908033][ C2] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 45.908218][ C2] ? timerqueue_del+0x68/0x120 [ 45.908367][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.908596][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 45.908743][ C2] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 45.908896][ C2] __do_softirq+0x1f8/0x5df [ 45.909047][ C2] irq_exit_rcu+0x97/0xc0 [ 45.909161][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.909389][ C2] [ 45.909469][ C2] [ 45.909544][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.909730][ C2] RIP: 0010:default_idle+0xf/0x20 [ 45.909883][ C2] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d a3 30 35 00 fb f4 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 [ 45.910488][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000246 [ 45.910761][ C2] RAX: 000000000012acf9 RBX: 1ffff9200002bfc1 RCX: ffffffff9e30e9d5 [ 45.910982][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9bcaa4a4 [ 45.911200][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2709c [ 45.911505][ C2] R10: ffff8880361384e3 R11: ffff88803613dc80 R12: 0000000000000000 [ 45.911729][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 45.911954][ C2] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 45.912103][ C2] ? cpuidle_idle_call+0x1f4/0x280 [ 45.912261][ C2] default_idle_call+0x6d/0xb0 [ 45.912410][ C2] cpuidle_idle_call+0x1f4/0x280 [ 45.912556][ C2] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 45.912705][ C2] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 45.912931][ C2] do_idle+0xf9/0x160 [ 45.913042][ C2] cpu_startup_entry+0x54/0x60 [ 45.913190][ C2] start_secondary+0x21c/0x2b0 [ 45.913337][ C2] ? __pfx_start_secondary+0x10/0x10 [ 45.913643][ C2] common_startup_64+0x12c/0x138 [ 45.913794][ C2] [ 126.135928][ T654] Mirror/redirect action on [ 163.633163][ T797] br: port 3(veth4) entered disabled state [ 163.633727][ T797] veth4: left allmulticast mode [ 163.633872][ T797] veth4: left promiscuous mode [ 163.634127][ T797] br: port 3(veth4) entered disabled state [ 163.736555][ T799] br: port 2(veth3) entered disabled state [ 163.737051][ T799] veth3: left allmulticast mode [ 163.737193][ T799] veth3: left promiscuous mode [ 163.737455][ T799] br: port 2(veth3) entered disabled state [ 163.839321][ T800] br: port 1(veth1) entered disabled state [ 163.839837][ T800] veth1: left allmulticast mode [ 163.839975][ T800] veth1: left promiscuous mode [ 163.840209][ T800] br: port 1(veth1) entered disabled state