[ 28.651767][ T285] br0: port 1(veth1) entered blocking state [ 28.652319][ T285] br0: port 1(veth1) entered disabled state [ 28.653023][ T285] veth1: entered allmulticast mode [ 28.664388][ T285] veth1: entered promiscuous mode [ 28.786621][ T287] br0: port 2(veth2) entered blocking state [ 28.786902][ T287] br0: port 2(veth2) entered disabled state [ 28.787173][ T287] veth2: entered allmulticast mode [ 28.795692][ T287] veth2: entered promiscuous mode [ 29.043711][ T7] br0: port 1(veth1) entered blocking state [ 29.044110][ T7] br0: port 1(veth1) entered forwarding state [ 29.177033][ T49] br0: port 2(veth2) entered blocking state [ 29.177320][ T49] br0: port 2(veth2) entered forwarding state [ 41.035417][ T313] GACT probability NOT on [ 44.328707][ C0] [ 44.328988][ C0] ======================================================== [ 44.329220][ C0] WARNING: possible irq lock inversion dependency detected [ 44.329450][ C0] 6.9.0-rc1-virtme #1 Not tainted [ 44.329606][ C0] -------------------------------------------------------- [ 44.329829][ C0] swapper/0/0 just changed the state of lock: [ 44.330017][ C0] ffff88800882ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.330412][ C0] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.330640][ C0] (&p->alloc_lock){+.+.}-{2:2} [ 44.330644][ C0] [ 44.330644][ C0] [ 44.330644][ C0] and interrupts could create inverse lock ordering between them. [ 44.330644][ C0] [ 44.331178][ C0] [ 44.331178][ C0] other info that might help us debug this: [ 44.331455][ C0] Chain exists of: [ 44.331455][ C0] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.331455][ C0] [ 44.331793][ C0] Possible interrupt unsafe locking scenario: [ 44.331793][ C0] [ 44.332008][ C0] CPU0 CPU1 [ 44.332158][ C0] ---- ---- [ 44.332304][ C0] lock(&p->alloc_lock); [ 44.332416][ C0] local_irq_disable(); [ 44.332605][ C0] lock(&br->lock); [ 44.332790][ C0] lock(lweventlist_lock); [ 44.332976][ C0] [ 44.333089][ C0] lock(&br->lock); [ 44.333204][ C0] [ 44.333204][ C0] *** DEADLOCK *** [ 44.333204][ C0] [ 44.333427][ C0] 1 lock held by swapper/0/0: [ 44.333575][ C0] #0: ffffc90000007d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.333890][ C0] [ 44.333890][ C0] the shortest dependencies between 2nd lock and 1st lock: [ 44.334155][ C0] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.334313][ C0] HARDIRQ-ON-W at: [ 44.334427][ C0] __lock_acquire+0x797/0x1570 [ 44.334619][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.334808][ C0] _raw_spin_lock+0x30/0x40 [ 44.335012][ C0] set_mems_allowed+0x1d/0x210 [ 44.335197][ C0] kernel_init_freeable+0x72/0x310 [ 44.335393][ C0] kernel_init+0x20/0x200 [ 44.335579][ C0] ret_from_fork+0x31/0x70 [ 44.335768][ C0] ret_from_fork_asm+0x1a/0x30 [ 44.335951][ C0] SOFTIRQ-ON-W at: [ 44.336074][ C0] __lock_acquire+0x797/0x1570 [ 44.336261][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.336464][ C0] _raw_spin_lock+0x30/0x40 [ 44.336651][ C0] set_mems_allowed+0x1d/0x210 [ 44.336841][ C0] kernel_init_freeable+0x72/0x310 [ 44.337027][ C0] kernel_init+0x20/0x200 [ 44.337231][ C0] ret_from_fork+0x31/0x70 [ 44.337419][ C0] ret_from_fork_asm+0x1a/0x30 [ 44.337602][ C0] INITIAL USE at: [ 44.337711][ C0] __lock_acquire+0x797/0x1570 [ 44.337896][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.338082][ C0] _raw_spin_lock+0x30/0x40 [ 44.338274][ C0] set_mems_allowed+0x1d/0x210 [ 44.338459][ C0] kernel_init_freeable+0x72/0x310 [ 44.338645][ C0] kernel_init+0x20/0x200 [ 44.338828][ C0] ret_from_fork+0x31/0x70 [ 44.339009][ C0] ret_from_fork_asm+0x1a/0x30 [ 44.339194][ C0] } [ 44.339276][ C0] ... key at: [] __key.387+0x0/0x40 [ 44.339522][ C0] ... acquired at: [ 44.339634][ C0] __lock_acquire+0xaf0/0x1570 [ 44.339794][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.339945][ C0] _raw_spin_lock+0x30/0x40 [ 44.340091][ C0] __get_task_comm+0x27/0x70 [ 44.340241][ C0] ref_tracker_alloc+0x2ee/0x490 [ 44.340400][ C0] linkwatch_fire_event+0x196/0x200 [ 44.340553][ C0] veth_newlink+0x367/0x830 [veth] [ 44.340719][ C0] rtnl_newlink_create+0x341/0x850 [ 44.340865][ C0] __rtnl_newlink+0xac9/0xd80 [ 44.341012][ C0] rtnl_newlink+0x63/0xa0 [ 44.341159][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.341311][ C0] netlink_rcv_skb+0x130/0x360 [ 44.341466][ C0] netlink_unicast+0x449/0x710 [ 44.341613][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.341761][ C0] ____sys_sendmsg+0x7b2/0xa10 [ 44.341921][ C0] ___sys_sendmsg+0xee/0x170 [ 44.342076][ C0] __sys_sendmsg+0xcd/0x170 [ 44.342224][ C0] do_syscall_64+0xc6/0x1e0 [ 44.342382][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.342568][ C0] [ 44.342643][ C0] -> (lweventlist_lock){....}-{2:2} { [ 44.342794][ C0] INITIAL USE at: [ 44.342905][ C0] __lock_acquire+0x797/0x1570 [ 44.343090][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.343289][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.343476][ C0] linkwatch_sync_dev+0x29/0x1f0 [ 44.343660][ C0] rtnl_getlink+0x4c9/0x970 [ 44.343849][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.344040][ C0] netlink_rcv_skb+0x130/0x360 [ 44.344230][ C0] netlink_unicast+0x449/0x710 [ 44.344416][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.344604][ C0] __sys_sendto+0x37d/0x410 [ 44.344792][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.344974][ C0] do_syscall_64+0xc6/0x1e0 [ 44.345160][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.345389][ C0] } [ 44.345466][ C0] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.345694][ C0] ... acquired at: [ 44.345804][ C0] __lock_acquire+0xaf0/0x1570 [ 44.345951][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.346097][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.346243][ C0] linkwatch_fire_event+0x74/0x200 [ 44.346392][ C0] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.346641][ C0] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.346862][ C0] dev_set_mac_address+0x28a/0x410 [ 44.347013][ C0] dev_set_mac_address_user+0x31/0x50 [ 44.347163][ C0] do_setlink+0x17b4/0x21e0 [ 44.347309][ C0] rtnl_setlink+0x1f7/0x310 [ 44.347461][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.347611][ C0] netlink_rcv_skb+0x130/0x360 [ 44.347762][ C0] netlink_unicast+0x449/0x710 [ 44.347913][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.348058][ C0] __sys_sendto+0x37d/0x410 [ 44.348203][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.348358][ C0] do_syscall_64+0xc6/0x1e0 [ 44.348505][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.348689][ C0] [ 44.348764][ C0] -> (&br->lock){+.-.}-{2:2} { [ 44.348916][ C0] HARDIRQ-ON-W at: [ 44.349039][ C0] __lock_acquire+0x797/0x1570 [ 44.349232][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.349418][ C0] _raw_spin_lock_bh+0x38/0x50 [ 44.349609][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 44.349862][ C0] dev_set_mac_address+0x28a/0x410 [ 44.350047][ C0] dev_set_mac_address_user+0x31/0x50 [ 44.350231][ C0] do_setlink+0x17b4/0x21e0 [ 44.350426][ C0] rtnl_setlink+0x1f7/0x310 [ 44.350610][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.350794][ C0] netlink_rcv_skb+0x130/0x360 [ 44.350982][ C0] netlink_unicast+0x449/0x710 [ 44.351166][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.351352][ C0] __sys_sendto+0x37d/0x410 [ 44.351548][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.351738][ C0] do_syscall_64+0xc6/0x1e0 [ 44.351922][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.352147][ C0] IN-SOFTIRQ-W at: [ 44.352260][ C0] __lock_acquire+0x797/0x1570 [ 44.352443][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.352627][ C0] _raw_spin_lock+0x30/0x40 [ 44.352818][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.353080][ C0] call_timer_fn+0x13b/0x230 [ 44.353265][ C0] __run_timers+0x545/0x810 [ 44.353451][ C0] run_timer_softirq+0xe8/0x1b0 [ 44.353638][ C0] __do_softirq+0x1f8/0x5df [ 44.353831][ C0] irq_exit_rcu+0x97/0xc0 [ 44.354018][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.354262][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.354483][ C0] default_idle+0xf/0x20 [ 44.354669][ C0] default_idle_call+0x6d/0xb0 [ 44.354858][ C0] cpuidle_idle_call+0x1f4/0x280 [ 44.355044][ C0] do_idle+0xf9/0x160 [ 44.355190][ C0] cpu_startup_entry+0x54/0x60 [ 44.355383][ C0] rest_init+0x14f/0x260 [ 44.355570][ C0] start_kernel+0x318/0x3d0 [ 44.355756][ C0] x86_64_start_reservations+0x18/0x30 [ 44.355939][ C0] x86_64_start_kernel+0xba/0x110 [ 44.356126][ C0] common_startup_64+0x12c/0x138 [ 44.356312][ C0] INITIAL USE at: [ 44.356427][ C0] __lock_acquire+0x797/0x1570 [ 44.356612][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.356799][ C0] _raw_spin_lock_bh+0x38/0x50 [ 44.356986][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 44.357240][ C0] dev_set_mac_address+0x28a/0x410 [ 44.357521][ C0] dev_set_mac_address_user+0x31/0x50 [ 44.357709][ C0] do_setlink+0x17b4/0x21e0 [ 44.357891][ C0] rtnl_setlink+0x1f7/0x310 [ 44.358072][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.358344][ C0] netlink_rcv_skb+0x130/0x360 [ 44.358526][ C0] netlink_unicast+0x449/0x710 [ 44.358709][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.358983][ C0] __sys_sendto+0x37d/0x410 [ 44.359171][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.359368][ C0] do_syscall_64+0xc6/0x1e0 [ 44.359648][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.359868][ C0] } [ 44.359943][ C0] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.360233][ C0] ... acquired at: [ 44.360434][ C0] mark_lock+0x28d/0x3e0 [ 44.360585][ C0] mark_usage+0xd9/0x2a0 [ 44.360736][ C0] __lock_acquire+0x797/0x1570 [ 44.360885][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.361126][ C0] _raw_spin_lock+0x30/0x40 [ 44.361283][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.361517][ C0] call_timer_fn+0x13b/0x230 [ 44.361666][ C0] __run_timers+0x545/0x810 [ 44.361904][ C0] run_timer_softirq+0xe8/0x1b0 [ 44.362051][ C0] __do_softirq+0x1f8/0x5df [ 44.362209][ C0] irq_exit_rcu+0x97/0xc0 [ 44.362356][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.362628][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.362814][ C0] default_idle+0xf/0x20 [ 44.362959][ C0] default_idle_call+0x6d/0xb0 [ 44.363104][ C0] cpuidle_idle_call+0x1f4/0x280 [ 44.363251][ C0] do_idle+0xf9/0x160 [ 44.363362][ C0] cpu_startup_entry+0x54/0x60 [ 44.363513][ C0] rest_init+0x14f/0x260 [ 44.363664][ C0] start_kernel+0x318/0x3d0 [ 44.363809][ C0] x86_64_start_reservations+0x18/0x30 [ 44.364046][ C0] x86_64_start_kernel+0xba/0x110 [ 44.364191][ C0] common_startup_64+0x12c/0x138 [ 44.364336][ C0] [ 44.364415][ C0] [ 44.364415][ C0] stack backtrace: [ 44.364774][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc1-virtme #1 [ 44.365004][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.365333][ C0] Call Trace: [ 44.365534][ C0] [ 44.365612][ C0] dump_stack_lvl+0x82/0xd0 [ 44.365765][ C0] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.365950][ C0] ? common_startup_64+0x12c/0x138 [ 44.366102][ C0] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.366382][ C0] ? __pfx_usage_skip+0x10/0x10 [ 44.366529][ C0] ? __pfx_usage_match+0x10/0x10 [ 44.366674][ C0] ? arch_stack_walk+0x8c/0xf0 [ 44.366823][ C0] mark_lock_irq+0x4cd/0xa10 [ 44.367063][ C0] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.367209][ C0] ? stack_trace_save+0x94/0xd0 [ 44.367355][ C0] ? add_chain_cache+0x248/0x8b0 [ 44.367501][ C0] ? save_trace+0x8f/0x5b0 [ 44.367742][ C0] mark_lock+0x28d/0x3e0 [ 44.367855][ C0] mark_usage+0xd9/0x2a0 [ 44.367965][ C0] __lock_acquire+0x797/0x1570 [ 44.368113][ C0] ? __lock_acquire+0xaf0/0x1570 [ 44.368259][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.368602][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.368748][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.368966][ C0] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.369218][ C0] ? trace_lock_acquire+0x135/0x1c0 [ 44.369378][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.369612][ C0] ? lock_acquire+0x32/0xc0 [ 44.369780][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.370108][ C0] _raw_spin_lock+0x30/0x40 [ 44.370270][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.370506][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.370749][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.371116][ C0] call_timer_fn+0x13b/0x230 [ 44.371273][ C0] ? call_timer_fn+0xe8/0x230 [ 44.371441][ C0] ? call_timer_fn+0xe8/0x230 [ 44.371694][ C0] ? __pfx_call_timer_fn+0x10/0x10 [ 44.371853][ C0] ? mark_lock+0x38/0x3e0 [ 44.371977][ C0] __run_timers+0x545/0x810 [ 44.372145][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.372520][ C0] ? __pfx___run_timers+0x10/0x10 [ 44.372688][ C0] ? do_raw_spin_lock+0x131/0x270 [ 44.372844][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.373010][ C0] ? lock_acquire+0x32/0xc0 [ 44.373169][ C0] ? run_timer_softirq+0xe0/0x1b0 [ 44.373330][ C0] run_timer_softirq+0xe8/0x1b0 [ 44.373490][ C0] __do_softirq+0x1f8/0x5df [ 44.373651][ C0] irq_exit_rcu+0x97/0xc0 [ 44.373775][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.374028][ C0] [ 44.374111][ C0] [ 44.374192][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.374391][ C0] RIP: 0010:default_idle+0xf/0x20 [ 44.374559][ C0] 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 93 20 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 [ 44.375228][ C0] RSP: 0018:ffffffff9ba07e00 EFLAGS: 00000242 [ 44.375432][ C0] RAX: 00000000000a3fb3 RBX: 1ffffffff3740fc2 RCX: ffffffff9ab0f9e5 [ 44.375769][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff984aa4a4 [ 44.376009][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0709c [ 44.376248][ C0] R10: ffff8880360384e3 R11: ffff88803602d9b0 R12: 0000000000000000 [ 44.376498][ C0] R13: ffffffff9ba1d000 R14: dffffc0000000000 R15: 0000000000014770 [ 44.376739][ C0] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.376907][ C0] ? cpuidle_idle_call+0x1f4/0x280 [ 44.377262][ C0] default_idle_call+0x6d/0xb0 [ 44.377422][ C0] cpuidle_idle_call+0x1f4/0x280 [ 44.377583][ C0] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.377743][ C0] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.377998][ C0] do_idle+0xf9/0x160 [ 44.378128][ C0] cpu_startup_entry+0x54/0x60 [ 44.378288][ C0] rest_init+0x14f/0x260 [ 44.378410][ C0] start_kernel+0x318/0x3d0 [ 44.378573][ C0] x86_64_start_reservations+0x18/0x30 [ 44.378824][ C0] x86_64_start_kernel+0xba/0x110 [ 44.378987][ C0] common_startup_64+0x12c/0x138 [ 44.379150][ C0] [ 214.308878][ T1503] br0: port 2(veth2) entered disabled state [ 214.415021][ T1504] br0: port 1(veth1) entered disabled state [ 214.508768][ T1505] veth2: left allmulticast mode [ 214.508951][ T1505] veth2: left promiscuous mode [ 214.509206][ T1505] br0: port 2(veth2) entered disabled state [ 214.510183][ T1505] veth1: left allmulticast mode [ 214.510322][ T1505] veth1: left promiscuous mode [ 214.511390][ T1505] br0: port 1(veth1) entered disabled state