[ 24.441009][ T237] ip (237) used greatest stack depth: 24360 bytes left [ 28.512261][ T286] br0: port 1(veth1) entered blocking state [ 28.512737][ T286] br0: port 1(veth1) entered disabled state [ 28.513052][ T286] veth1: entered allmulticast mode [ 28.515191][ T286] veth1: entered promiscuous mode [ 28.642020][ T288] br0: port 2(veth2) entered blocking state [ 28.642322][ T288] br0: port 2(veth2) entered disabled state [ 28.642599][ T288] veth2: entered allmulticast mode [ 28.644587][ T288] veth2: entered promiscuous mode [ 28.879382][ T62] br0: port 1(veth1) entered blocking state [ 28.879844][ T62] br0: port 1(veth1) entered forwarding state [ 29.022254][ T7] br0: port 2(veth2) entered blocking state [ 29.022526][ T7] br0: port 2(veth2) entered forwarding state [ 38.011259][ T318] veth0: entered promiscuous mode [ 38.629736][ T324] GACT probability NOT on [ 44.331506][ C1] [ 44.331761][ C1] ======================================================== [ 44.332007][ C1] WARNING: possible irq lock inversion dependency detected [ 44.332235][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 44.332393][ C1] -------------------------------------------------------- [ 44.332623][ C1] swapper/1/0 just changed the state of lock: [ 44.332816][ C1] ffff888005b42c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.333192][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.333423][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 44.333428][ C1] [ 44.333428][ C1] [ 44.333428][ C1] and interrupts could create inverse lock ordering between them. [ 44.333428][ C1] [ 44.334002][ C1] [ 44.334002][ C1] other info that might help us debug this: [ 44.334219][ C1] Chain exists of: [ 44.334219][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.334219][ C1] [ 44.334559][ C1] Possible interrupt unsafe locking scenario: [ 44.334559][ C1] [ 44.334783][ C1] CPU0 CPU1 [ 44.334940][ C1] ---- ---- [ 44.335088][ C1] lock(&p->alloc_lock); [ 44.335206][ C1] local_irq_disable(); [ 44.335390][ C1] lock(&br->lock); [ 44.335574][ C1] lock(lweventlist_lock); [ 44.335761][ C1] [ 44.335885][ C1] lock(&br->lock); [ 44.335999][ C1] [ 44.335999][ C1] *** DEADLOCK *** [ 44.335999][ C1] [ 44.336216][ C1] 1 lock held by swapper/1/0: [ 44.336373][ C1] #0: ffffc900001d8b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.336688][ C1] [ 44.336688][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 44.336948][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.337110][ C1] HARDIRQ-ON-W at: [ 44.337224][ C1] __lock_acquire+0x797/0x1570 [ 44.337417][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.337607][ C1] _raw_spin_lock+0x30/0x40 [ 44.337799][ C1] set_mems_allowed+0x1d/0x210 [ 44.337995][ C1] kernel_init_freeable+0x72/0x310 [ 44.338192][ C1] kernel_init+0x20/0x200 [ 44.338380][ C1] ret_from_fork+0x31/0x70 [ 44.338571][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.338759][ C1] SOFTIRQ-ON-W at: [ 44.338871][ C1] __lock_acquire+0x797/0x1570 [ 44.339061][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.339254][ C1] _raw_spin_lock+0x30/0x40 [ 44.339443][ C1] set_mems_allowed+0x1d/0x210 [ 44.339651][ C1] kernel_init_freeable+0x72/0x310 [ 44.339843][ C1] kernel_init+0x20/0x200 [ 44.340030][ C1] ret_from_fork+0x31/0x70 [ 44.340216][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.340409][ C1] INITIAL USE at: [ 44.340521][ C1] __lock_acquire+0x797/0x1570 [ 44.340709][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.340896][ C1] _raw_spin_lock+0x30/0x40 [ 44.341088][ C1] set_mems_allowed+0x1d/0x210 [ 44.341274][ C1] kernel_init_freeable+0x72/0x310 [ 44.341462][ C1] kernel_init+0x20/0x200 [ 44.341665][ C1] ret_from_fork+0x31/0x70 [ 44.341855][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.342044][ C1] } [ 44.342121][ C1] ... key at: [] __key.387+0x0/0x40 [ 44.342353][ C1] ... acquired at: [ 44.342469][ C1] __lock_acquire+0xaf0/0x1570 [ 44.342620][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.342773][ C1] _raw_spin_lock+0x30/0x40 [ 44.342920][ C1] __get_task_comm+0x27/0x70 [ 44.343083][ C1] ref_tracker_alloc+0x2ee/0x490 [ 44.343233][ C1] linkwatch_fire_event+0x196/0x200 [ 44.343385][ C1] veth_newlink+0x367/0x830 [veth] [ 44.343543][ C1] rtnl_newlink_create+0x341/0x850 [ 44.343694][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.343842][ C1] rtnl_newlink+0x63/0xa0 [ 44.343997][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.344148][ C1] netlink_rcv_skb+0x130/0x360 [ 44.344301][ C1] netlink_unicast+0x449/0x710 [ 44.344452][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.344601][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.344760][ C1] ___sys_sendmsg+0xee/0x170 [ 44.344913][ C1] __sys_sendmsg+0xcd/0x170 [ 44.345062][ C1] do_syscall_64+0xc6/0x1e0 [ 44.345213][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.345407][ C1] [ 44.345483][ C1] -> (lweventlist_lock){....}-{2:2} { [ 44.345638][ C1] INITIAL USE at: [ 44.345750][ C1] __lock_acquire+0x797/0x1570 [ 44.345941][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.346127][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.346315][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 44.346505][ C1] rtnl_getlink+0x4c9/0x970 [ 44.346692][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.346878][ C1] netlink_rcv_skb+0x130/0x360 [ 44.347065][ C1] netlink_unicast+0x449/0x710 [ 44.347250][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.347435][ C1] __sys_sendto+0x37d/0x410 [ 44.347627][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 44.347813][ C1] do_syscall_64+0xc6/0x1e0 [ 44.348000][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.348224][ C1] } [ 44.348299][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.348521][ C1] ... acquired at: [ 44.348634][ C1] __lock_acquire+0xaf0/0x1570 [ 44.348786][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.348934][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.349084][ C1] linkwatch_fire_event+0x74/0x200 [ 44.349233][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.349460][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.349696][ C1] dev_set_mac_address+0x28a/0x410 [ 44.349846][ C1] dev_set_mac_address_user+0x31/0x50 [ 44.349999][ C1] do_setlink+0x17b4/0x21e0 [ 44.350156][ C1] rtnl_setlink+0x1f7/0x310 [ 44.350305][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.350454][ C1] netlink_rcv_skb+0x130/0x360 [ 44.350606][ C1] netlink_unicast+0x449/0x710 [ 44.350760][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.350907][ C1] __sys_sendto+0x37d/0x410 [ 44.351057][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 44.351214][ C1] do_syscall_64+0xc6/0x1e0 [ 44.351367][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.351559][ C1] [ 44.351635][ C1] -> (&br->lock){+.-.}-{2:2} { [ 44.351791][ C1] HARDIRQ-ON-W at: [ 44.351903][ C1] __lock_acquire+0x797/0x1570 [ 44.352097][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.352284][ C1] _raw_spin_lock_bh+0x38/0x50 [ 44.352482][ C1] br_set_ageing_time+0x2d/0xf0 [bridge] [ 44.352748][ C1] br_changelink+0x231/0x1360 [bridge] [ 44.352970][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 44.353194][ C1] rtnl_newlink_create+0x341/0x850 [ 44.353382][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.353573][ C1] rtnl_newlink+0x63/0xa0 [ 44.353769][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.353954][ C1] netlink_rcv_skb+0x130/0x360 [ 44.354152][ C1] netlink_unicast+0x449/0x710 [ 44.354340][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.354532][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.354719][ C1] ___sys_sendmsg+0xee/0x170 [ 44.354911][ C1] __sys_sendmsg+0xcd/0x170 [ 44.355104][ C1] do_syscall_64+0xc6/0x1e0 [ 44.355289][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.355517][ C1] IN-SOFTIRQ-W at: [ 44.355635][ C1] __lock_acquire+0x797/0x1570 [ 44.355824][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.356012][ C1] _raw_spin_lock+0x30/0x40 [ 44.356201][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.356470][ C1] call_timer_fn+0x13b/0x230 [ 44.356665][ C1] __run_timers+0x545/0x810 [ 44.356854][ C1] timer_expire_remote+0x9b/0xe0 [ 44.357040][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 44.357227][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.357416][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 44.357609][ C1] __do_softirq+0x1f8/0x5df [ 44.357795][ C1] irq_exit_rcu+0x97/0xc0 [ 44.357997][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.358225][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.358448][ C1] default_idle+0xf/0x20 [ 44.358634][ C1] default_idle_call+0x6d/0xb0 [ 44.358831][ C1] cpuidle_idle_call+0x1f4/0x280 [ 44.359018][ C1] do_idle+0xf9/0x160 [ 44.359177][ C1] cpu_startup_entry+0x54/0x60 [ 44.359368][ C1] start_secondary+0x21c/0x2b0 [ 44.359571][ C1] common_startup_64+0x12c/0x138 [ 44.359758][ C1] INITIAL USE at: [ 44.359869][ C1] __lock_acquire+0x797/0x1570 [ 44.360068][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.360255][ C1] _raw_spin_lock_bh+0x38/0x50 [ 44.360448][ C1] br_set_ageing_time+0x2d/0xf0 [bridge] [ 44.360717][ C1] br_changelink+0x231/0x1360 [bridge] [ 44.360940][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 44.361164][ C1] rtnl_newlink_create+0x341/0x850 [ 44.361370][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.361562][ C1] rtnl_newlink+0x63/0xa0 [ 44.361750][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.361939][ C1] netlink_rcv_skb+0x130/0x360 [ 44.362137][ C1] netlink_unicast+0x449/0x710 [ 44.362325][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.362516][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.362706][ C1] ___sys_sendmsg+0xee/0x170 [ 44.362894][ C1] __sys_sendmsg+0xcd/0x170 [ 44.363082][ C1] do_syscall_64+0xc6/0x1e0 [ 44.363280][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.363595][ C1] } [ 44.363670][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.363983][ C1] ... acquired at: [ 44.364095][ C1] mark_lock+0x28d/0x3e0 [ 44.364330][ C1] mark_usage+0xd9/0x2a0 [ 44.364479][ C1] __lock_acquire+0x797/0x1570 [ 44.364629][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.364787][ C1] _raw_spin_lock+0x30/0x40 [ 44.365024][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.365252][ C1] call_timer_fn+0x13b/0x230 [ 44.365408][ C1] __run_timers+0x545/0x810 [ 44.365555][ C1] timer_expire_remote+0x9b/0xe0 [ 44.365785][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 44.365935][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.366086][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 44.366235][ C1] __do_softirq+0x1f8/0x5df [ 44.366482][ C1] irq_exit_rcu+0x97/0xc0 [ 44.366635][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.366832][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.367017][ C1] default_idle+0xf/0x20 [ 44.367248][ C1] default_idle_call+0x6d/0xb0 [ 44.367396][ C1] cpuidle_idle_call+0x1f4/0x280 [ 44.367545][ C1] do_idle+0xf9/0x160 [ 44.367665][ C1] cpu_startup_entry+0x54/0x60 [ 44.367815][ C1] start_secondary+0x21c/0x2b0 [ 44.368044][ C1] common_startup_64+0x12c/0x138 [ 44.368202][ C1] [ 44.368283][ C1] [ 44.368283][ C1] stack backtrace: [ 44.368466][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 44.368776][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.369111][ C1] Call Trace: [ 44.369225][ C1] [ 44.369389][ C1] dump_stack_lvl+0x82/0xd0 [ 44.369568][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.369760][ C1] ? common_startup_64+0x12c/0x138 [ 44.369914][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.370102][ C1] ? __pfx_usage_skip+0x10/0x10 [ 44.370253][ C1] ? __pfx_usage_match+0x10/0x10 [ 44.370403][ C1] ? arch_stack_walk+0x8c/0xf0 [ 44.370554][ C1] mark_lock_irq+0x4cd/0xa10 [ 44.370790][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.370947][ C1] ? stack_trace_save+0x94/0xd0 [ 44.371100][ C1] ? save_trace+0x8f/0x5b0 [ 44.371250][ C1] mark_lock+0x28d/0x3e0 [ 44.371364][ C1] ? __pfx_validate_chain+0x10/0x10 [ 44.371596][ C1] mark_usage+0xd9/0x2a0 [ 44.371709][ C1] __lock_acquire+0x797/0x1570 [ 44.371860][ C1] ? __lock_acquire+0xaf0/0x1570 [ 44.372010][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.372355][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.372503][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.372725][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.372876][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 44.373107][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.373329][ C1] ? lock_acquire+0x32/0xc0 [ 44.373480][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.373710][ C1] _raw_spin_lock+0x30/0x40 [ 44.373941][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.374173][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.374397][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.374736][ C1] call_timer_fn+0x13b/0x230 [ 44.374887][ C1] ? call_timer_fn+0xe8/0x230 [ 44.375036][ C1] ? call_timer_fn+0xe8/0x230 [ 44.375190][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 44.375422][ C1] ? mark_lock+0x38/0x3e0 [ 44.375539][ C1] __run_timers+0x545/0x810 [ 44.375687][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.375951][ C1] ? __pfx___run_timers+0x10/0x10 [ 44.376101][ C1] ? __lock_release+0x103/0x460 [ 44.376251][ C1] ? do_raw_spin_lock+0x131/0x270 [ 44.376400][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.376551][ C1] ? lock_acquire+0x32/0xc0 [ 44.376782][ C1] ? timer_expire_remote+0x93/0xe0 [ 44.376933][ C1] timer_expire_remote+0x9b/0xe0 [ 44.377083][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 44.377232][ C1] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 44.377519][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.377668][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 44.377823][ C1] ? do_raw_spin_lock+0x131/0x270 [ 44.377976][ C1] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 44.378125][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.378275][ C1] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 44.378458][ C1] __do_softirq+0x1f8/0x5df [ 44.378606][ C1] irq_exit_rcu+0x97/0xc0 [ 44.378718][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.379038][ C1] [ 44.379116][ C1] [ 44.379196][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.379382][ C1] RIP: 0010:default_idle+0xf/0x20 [ 44.379555][ C1] 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 [ 44.380168][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000242 [ 44.380457][ C1] RAX: 0000000000095fd5 RBX: 1ffff92000029fc1 RCX: ffffffffadd0e9d5 [ 44.380691][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffab6aa4a4 [ 44.380915][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1709c [ 44.381139][ C1] R10: ffff8880360b84e3 R11: ffff8880360ad9b0 R12: 0000000000000000 [ 44.381360][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 44.381584][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.381831][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 44.381981][ C1] default_idle_call+0x6d/0xb0 [ 44.382139][ C1] cpuidle_idle_call+0x1f4/0x280 [ 44.382289][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.382440][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.382671][ C1] do_idle+0xf9/0x160 [ 44.382783][ C1] cpu_startup_entry+0x54/0x60 [ 44.382932][ C1] start_secondary+0x21c/0x2b0 [ 44.383086][ C1] ? __pfx_start_secondary+0x10/0x10 [ 44.383319][ C1] common_startup_64+0x12c/0x138 [ 44.383470][ C1] [ 65.087759][ T352] veth0: left promiscuous mode [ 65.411718][ T356] veth3: entered promiscuous mode [ 67.222764][ T365] veth3: left promiscuous mode [ 67.412721][ T367] veth3: entered promiscuous mode [ 69.214808][ T376] veth3: left promiscuous mode [ 69.410130][ T379] veth3: entered promiscuous mode [ 71.250582][ T388] veth3: left promiscuous mode [ 71.433876][ T390] veth3: entered promiscuous mode [ 73.265090][ T399] veth3: left promiscuous mode [ 96.954135][ T429] br0: port 2(veth2) entered disabled state [ 97.050828][ T430] br0: port 1(veth1) entered disabled state [ 97.140003][ T431] veth2: left allmulticast mode [ 97.140189][ T431] veth2: left promiscuous mode [ 97.140445][ T431] br0: port 2(veth2) entered disabled state [ 97.141356][ T431] veth1: left allmulticast mode [ 97.141506][ T431] veth1: left promiscuous mode [ 97.141749][ T431] br0: port 1(veth1) entered disabled state