[ 27.853428][ T283] br0: port 1(veth1) entered blocking state [ 27.853847][ T283] br0: port 1(veth1) entered disabled state [ 27.854177][ T283] veth1: entered allmulticast mode [ 27.856335][ T283] veth1: entered promiscuous mode [ 27.980689][ T284] br0: port 2(veth2) entered blocking state [ 27.980976][ T284] br0: port 2(veth2) entered disabled state [ 27.981232][ T284] veth2: entered allmulticast mode [ 27.989951][ T284] veth2: entered promiscuous mode [ 28.223997][ T7] br0: port 1(veth1) entered blocking state [ 28.224366][ T7] br0: port 1(veth1) entered forwarding state [ 28.352836][ T51] br0: port 2(veth2) entered blocking state [ 28.353096][ T51] br0: port 2(veth2) entered forwarding state [ 42.821220][ T334] GACT probability NOT on [ 43.301934][ C2] [ 43.302151][ C2] ======================================================== [ 43.302378][ C2] WARNING: possible irq lock inversion dependency detected [ 43.302585][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 43.302734][ C2] -------------------------------------------------------- [ 43.302937][ C2] swapper/2/0 just changed the state of lock: [ 43.303106][ C2] ffff8880064cac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.303464][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 43.303668][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 43.303673][ C2] [ 43.303673][ C2] [ 43.303673][ C2] and interrupts could create inverse lock ordering between them. [ 43.303673][ C2] [ 43.304180][ C2] [ 43.304180][ C2] other info that might help us debug this: [ 43.304386][ C2] Chain exists of: [ 43.304386][ C2] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 43.304386][ C2] [ 43.304694][ C2] Possible interrupt unsafe locking scenario: [ 43.304694][ C2] [ 43.304900][ C2] CPU0 CPU1 [ 43.305036][ C2] ---- ---- [ 43.305173][ C2] lock(&p->alloc_lock); [ 43.305279][ C2] local_irq_disable(); [ 43.305449][ C2] lock(&br->lock); [ 43.305627][ C2] lock(lweventlist_lock); [ 43.305799][ C2] [ 43.305903][ C2] lock(&br->lock); [ 43.306012][ C2] [ 43.306012][ C2] *** DEADLOCK *** [ 43.306012][ C2] [ 43.306213][ C2] 1 lock held by swapper/2/0: [ 43.306353][ C2] #0: ffffc90000230b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 43.306636][ C2] [ 43.306636][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 43.306873][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 43.307023][ C2] HARDIRQ-ON-W at: [ 43.307128][ C2] __lock_acquire+0x797/0x1570 [ 43.307322][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.307496][ C2] _raw_spin_lock+0x30/0x40 [ 43.307677][ C2] set_mems_allowed+0x1d/0x210 [ 43.307853][ C2] kernel_init_freeable+0x72/0x310 [ 43.308030][ C2] kernel_init+0x20/0x200 [ 43.308203][ C2] ret_from_fork+0x31/0x70 [ 43.308376][ C2] ret_from_fork_asm+0x1a/0x30 [ 43.308549][ C2] SOFTIRQ-ON-W at: [ 43.308652][ C2] __lock_acquire+0x797/0x1570 [ 43.308833][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.309006][ C2] _raw_spin_lock+0x30/0x40 [ 43.309184][ C2] set_mems_allowed+0x1d/0x210 [ 43.309366][ C2] kernel_init_freeable+0x72/0x310 [ 43.309540][ C2] kernel_init+0x20/0x200 [ 43.309713][ C2] ret_from_fork+0x31/0x70 [ 43.309886][ C2] ret_from_fork_asm+0x1a/0x30 [ 43.310062][ C2] INITIAL USE at: [ 43.310171][ C2] __lock_acquire+0x797/0x1570 [ 43.310344][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.310515][ C2] _raw_spin_lock+0x30/0x40 [ 43.310689][ C2] set_mems_allowed+0x1d/0x210 [ 43.310861][ C2] kernel_init_freeable+0x72/0x310 [ 43.311034][ C2] kernel_init+0x20/0x200 [ 43.311213][ C2] ret_from_fork+0x31/0x70 [ 43.311385][ C2] ret_from_fork_asm+0x1a/0x30 [ 43.311558][ C2] } [ 43.311633][ C2] ... key at: [] __key.387+0x0/0x40 [ 43.311841][ C2] ... acquired at: [ 43.311945][ C2] __lock_acquire+0xaf0/0x1570 [ 43.312084][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.312227][ C2] _raw_spin_lock+0x30/0x40 [ 43.312367][ C2] __get_task_comm+0x27/0x70 [ 43.312507][ C2] ref_tracker_alloc+0x2ee/0x490 [ 43.312645][ C2] linkwatch_fire_event+0x196/0x200 [ 43.312783][ C2] veth_newlink+0x367/0x830 [veth] [ 43.312958][ C2] rtnl_newlink_create+0x341/0x850 [ 43.313120][ C2] __rtnl_newlink+0xac9/0xd80 [ 43.313267][ C2] rtnl_newlink+0x63/0xa0 [ 43.313412][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.313567][ C2] netlink_rcv_skb+0x130/0x360 [ 43.313713][ C2] netlink_unicast+0x449/0x710 [ 43.313876][ C2] netlink_sendmsg+0x723/0xbe0 [ 43.314013][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 43.314158][ C2] ___sys_sendmsg+0xee/0x170 [ 43.314299][ C2] __sys_sendmsg+0xcd/0x170 [ 43.314436][ C2] do_syscall_64+0xc6/0x1e0 [ 43.314573][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.314751][ C2] [ 43.314828][ C2] -> (lweventlist_lock){....}-{2:2} { [ 43.314972][ C2] INITIAL USE at: [ 43.315076][ C2] __lock_acquire+0x797/0x1570 [ 43.315249][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.315422][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.315593][ C2] linkwatch_sync_dev+0x29/0x1f0 [ 43.315769][ C2] rtnl_getlink+0x4c9/0x970 [ 43.315940][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.316112][ C2] netlink_rcv_skb+0x130/0x360 [ 43.316286][ C2] netlink_unicast+0x449/0x710 [ 43.316462][ C2] netlink_sendmsg+0x723/0xbe0 [ 43.316639][ C2] __sys_sendto+0x37d/0x410 [ 43.316817][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 43.316988][ C2] do_syscall_64+0xc6/0x1e0 [ 43.317161][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.317385][ C2] } [ 43.317455][ C2] ... key at: [] lweventlist_lock+0x18/0x60 [ 43.317659][ C2] ... acquired at: [ 43.317761][ C2] __lock_acquire+0xaf0/0x1570 [ 43.317906][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.318048][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.318186][ C2] linkwatch_fire_event+0x74/0x200 [ 43.318323][ C2] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 43.318533][ C2] br_set_mac_address+0x1f3/0x260 [bridge] [ 43.318738][ C2] dev_set_mac_address+0x28a/0x410 [ 43.318878][ C2] dev_set_mac_address_user+0x31/0x50 [ 43.319019][ C2] do_setlink+0x17b4/0x21e0 [ 43.319158][ C2] rtnl_setlink+0x1f7/0x310 [ 43.319294][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.319431][ C2] netlink_rcv_skb+0x130/0x360 [ 43.319566][ C2] netlink_unicast+0x449/0x710 [ 43.319704][ C2] netlink_sendmsg+0x723/0xbe0 [ 43.319841][ C2] __sys_sendto+0x37d/0x410 [ 43.319979][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 43.320116][ C2] do_syscall_64+0xc6/0x1e0 [ 43.320258][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.320428][ C2] [ 43.320498][ C2] -> (&br->lock){+.-.}-{2:2} { [ 43.320640][ C2] HARDIRQ-ON-W at: [ 43.320743][ C2] __lock_acquire+0x797/0x1570 [ 43.320921][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.321093][ C2] _raw_spin_lock_bh+0x38/0x50 [ 43.321265][ C2] br_set_mac_address+0xd2/0x260 [bridge] [ 43.321515][ C2] dev_set_mac_address+0x28a/0x410 [ 43.321694][ C2] dev_set_mac_address_user+0x31/0x50 [ 43.321866][ C2] do_setlink+0x17b4/0x21e0 [ 43.322038][ C2] rtnl_setlink+0x1f7/0x310 [ 43.322215][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.322388][ C2] netlink_rcv_skb+0x130/0x360 [ 43.322563][ C2] netlink_unicast+0x449/0x710 [ 43.322734][ C2] netlink_sendmsg+0x723/0xbe0 [ 43.322905][ C2] __sys_sendto+0x37d/0x410 [ 43.323075][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 43.323249][ C2] do_syscall_64+0xc6/0x1e0 [ 43.323420][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.323629][ C2] IN-SOFTIRQ-W at: [ 43.323732][ C2] __lock_acquire+0x797/0x1570 [ 43.323906][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.324079][ C2] _raw_spin_lock+0x30/0x40 [ 43.324253][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.324499][ C2] call_timer_fn+0x13b/0x230 [ 43.324683][ C2] __run_timers+0x545/0x810 [ 43.324863][ C2] timer_expire_remote+0x9b/0xe0 [ 43.325037][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 43.325210][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.325383][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 43.325561][ C2] __do_softirq+0x1f8/0x5df [ 43.325737][ C2] irq_exit_rcu+0x97/0xc0 [ 43.325914][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.326123][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.326329][ C2] default_idle+0xf/0x20 [ 43.326501][ C2] default_idle_call+0x6d/0xb0 [ 43.326671][ C2] cpuidle_idle_call+0x1f4/0x280 [ 43.326845][ C2] do_idle+0xf9/0x160 [ 43.326987][ C2] cpu_startup_entry+0x54/0x60 [ 43.327158][ C2] start_secondary+0x21c/0x2b0 [ 43.327352][ C2] common_startup_64+0x12c/0x138 [ 43.327611][ C2] INITIAL USE at: [ 43.327720][ C2] __lock_acquire+0x797/0x1570 [ 43.327898][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.328083][ C2] _raw_spin_lock_bh+0x38/0x50 [ 43.328346][ C2] br_set_mac_address+0xd2/0x260 [bridge] [ 43.328589][ C2] dev_set_mac_address+0x28a/0x410 [ 43.328767][ C2] dev_set_mac_address_user+0x31/0x50 [ 43.329030][ C2] do_setlink+0x17b4/0x21e0 [ 43.329204][ C2] rtnl_setlink+0x1f7/0x310 [ 43.329382][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.329640][ C2] netlink_rcv_skb+0x130/0x360 [ 43.329817][ C2] netlink_unicast+0x449/0x710 [ 43.329998][ C2] netlink_sendmsg+0x723/0xbe0 [ 43.330178][ C2] __sys_sendto+0x37d/0x410 [ 43.330436][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 43.330607][ C2] do_syscall_64+0xc6/0x1e0 [ 43.330786][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.331082][ C2] } [ 43.331155][ C2] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 43.331432][ C2] ... acquired at: [ 43.331533][ C2] mark_lock+0x28d/0x3e0 [ 43.331755][ C2] mark_usage+0xd9/0x2a0 [ 43.331892][ C2] __lock_acquire+0x797/0x1570 [ 43.332041][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.332179][ C2] _raw_spin_lock+0x30/0x40 [ 43.332402][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.332615][ C2] call_timer_fn+0x13b/0x230 [ 43.332758][ C2] __run_timers+0x545/0x810 [ 43.332899][ C2] timer_expire_remote+0x9b/0xe0 [ 43.333194][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 43.333332][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.333469][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 43.333618][ C2] __do_softirq+0x1f8/0x5df [ 43.333759][ C2] irq_exit_rcu+0x97/0xc0 [ 43.333998][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.334178][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.334352][ C2] default_idle+0xf/0x20 [ 43.334490][ C2] default_idle_call+0x6d/0xb0 [ 43.334626][ C2] cpuidle_idle_call+0x1f4/0x280 [ 43.334770][ C2] do_idle+0xf9/0x160 [ 43.334877][ C2] cpu_startup_entry+0x54/0x60 [ 43.335020][ C2] start_secondary+0x21c/0x2b0 [ 43.335163][ C2] common_startup_64+0x12c/0x138 [ 43.335301][ C2] [ 43.335371][ C2] [ 43.335371][ C2] stack backtrace: [ 43.335539][ C2] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-virtme #1 [ 43.335829][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 43.336145][ C2] Call Trace: [ 43.336249][ C2] [ 43.336323][ C2] dump_stack_lvl+0x82/0xd0 [ 43.336545][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 43.336723][ C2] ? common_startup_64+0x12c/0x138 [ 43.336860][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 43.337111][ C2] ? __pfx_usage_skip+0x10/0x10 [ 43.337256][ C2] ? __pfx_usage_match+0x10/0x10 [ 43.337407][ C2] ? arch_stack_walk+0x8c/0xf0 [ 43.337546][ C2] mark_lock_irq+0x4cd/0xa10 [ 43.337688][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 43.337906][ C2] ? stack_trace_save+0x94/0xd0 [ 43.338043][ C2] ? add_chain_cache+0x248/0x8b0 [ 43.338184][ C2] ? save_trace+0x8f/0x5b0 [ 43.338323][ C2] mark_lock+0x28d/0x3e0 [ 43.338429][ C2] mark_usage+0xd9/0x2a0 [ 43.338534][ C2] __lock_acquire+0x797/0x1570 [ 43.338679][ C2] ? __lock_acquire+0xaf0/0x1570 [ 43.338817][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.339139][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.339276][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.339483][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 43.339621][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 43.339842][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.340053][ C2] ? lock_acquire+0x32/0xc0 [ 43.340189][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.340397][ C2] _raw_spin_lock+0x30/0x40 [ 43.340534][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.340750][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.340957][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.341276][ C2] call_timer_fn+0x13b/0x230 [ 43.341422][ C2] ? call_timer_fn+0xe8/0x230 [ 43.341563][ C2] ? call_timer_fn+0xe8/0x230 [ 43.341701][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 43.341921][ C2] ? mark_lock+0x38/0x3e0 [ 43.342031][ C2] __run_timers+0x545/0x810 [ 43.342168][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.342412][ C2] ? __pfx___run_timers+0x10/0x10 [ 43.342640][ C2] ? __lock_release+0x103/0x460 [ 43.342787][ C2] ? do_raw_spin_lock+0x131/0x270 [ 43.342930][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 43.343066][ C2] ? lock_acquire+0x32/0xc0 [ 43.343202][ C2] ? timer_expire_remote+0x93/0xe0 [ 43.343422][ C2] timer_expire_remote+0x9b/0xe0 [ 43.343561][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 43.343705][ C2] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 43.343886][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.344190][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 43.344331][ C2] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 43.344471][ C2] __do_softirq+0x1f8/0x5df [ 43.344619][ C2] irq_exit_rcu+0x97/0xc0 [ 43.344808][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.344945][ C2] [ 43.345016][ C2] [ 43.345086][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.345259][ C2] RIP: 0010:default_idle+0xf/0x20 [ 43.345493][ 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 [ 43.345985][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000246 [ 43.346247][ C2] RAX: 00000000000e07f9 RBX: 1ffff9200002bfc1 RCX: ffffffffb6d0e9d5 [ 43.346462][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb46aa4a4 [ 43.346679][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2709c [ 43.346984][ C2] R10: ffff8880361384e3 R11: ffff88803612d9b0 R12: 0000000000000000 [ 43.347189][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 43.347416][ C2] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 43.347554][ C2] ? cpuidle_idle_call+0x1f4/0x280 [ 43.347705][ C2] default_idle_call+0x6d/0xb0 [ 43.347842][ C2] cpuidle_idle_call+0x1f4/0x280 [ 43.347983][ C2] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 43.348202][ C2] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 43.348340][ C2] do_idle+0xf9/0x160 [ 43.348448][ C2] cpu_startup_entry+0x54/0x60 [ 43.348584][ C2] start_secondary+0x21c/0x2b0 [ 43.348812][ C2] ? __pfx_start_secondary+0x10/0x10 [ 43.348954][ C2] common_startup_64+0x12c/0x138 [ 43.349104][ C2] [ 205.907176][ T1473] br0: port 2(veth2) entered disabled state [ 205.999856][ T1474] br0: port 1(veth1) entered disabled state [ 206.098802][ T1476] veth2: left allmulticast mode [ 206.098977][ T1476] veth2: left promiscuous mode [ 206.099238][ T1476] br0: port 2(veth2) entered disabled state [ 206.100241][ T1476] veth1: left allmulticast mode [ 206.100395][ T1476] veth1: left promiscuous mode [ 206.100654][ T1476] br0: port 1(veth1) entered disabled state