[ 32.326926][ T275] ip (275) used greatest stack depth: 23648 bytes left [ 34.146836][ T292] veth1: entered promiscuous mode [ 58.941184][ T374] veth1: entered allmulticast mode [ 65.457085][ T389] veth1: left allmulticast mode [ 75.238193][ T459] veth1: left promiscuous mode [ 79.234650][ T490] br0: port 1(veth1) entered blocking state [ 79.234936][ T490] br0: port 1(veth1) entered disabled state [ 79.235206][ T490] veth1: entered allmulticast mode [ 79.237646][ T490] veth1: entered promiscuous mode [ 79.362254][ T47] br0: port 1(veth1) entered blocking state [ 79.362654][ T47] br0: port 1(veth1) entered forwarding state [ 80.009263][ T497] br0: port 1(veth1) entered disabled state [ 80.011472][ T497] br0: port 1(veth1) entered blocking state [ 80.011765][ T497] br0: port 1(veth1) entered forwarding state [ 80.832814][ T504] br0: entered promiscuous mode [ 95.019503][ C1] [ 95.019730][ C1] ======================================================== [ 95.020025][ C1] WARNING: possible irq lock inversion dependency detected [ 95.020299][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 95.020473][ C1] -------------------------------------------------------- [ 95.020785][ C1] swapper/1/0 just changed the state of lock: [ 95.020975][ C1] ffff88800616ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 95.021345][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 95.021560][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 95.021564][ C1] [ 95.021564][ C1] [ 95.021564][ C1] and interrupts could create inverse lock ordering between them. [ 95.021564][ C1] [ 95.022164][ C1] [ 95.022164][ C1] other info that might help us debug this: [ 95.022362][ C1] Chain exists of: [ 95.022362][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 95.022362][ C1] [ 95.022676][ C1] Possible interrupt unsafe locking scenario: [ 95.022676][ C1] [ 95.022881][ C1] CPU0 CPU1 [ 95.023013][ C1] ---- ---- [ 95.023146][ C1] lock(&p->alloc_lock); [ 95.023252][ C1] local_irq_disable(); [ 95.023422][ C1] lock(&br->lock); [ 95.023589][ C1] lock(lweventlist_lock); [ 95.023772][ C1] [ 95.023877][ C1] lock(&br->lock); [ 95.023984][ C1] [ 95.023984][ C1] *** DEADLOCK *** [ 95.023984][ C1] [ 95.024176][ C1] 1 lock held by swapper/1/0: [ 95.024316][ C1] #0: ffffc900001d8d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 95.024604][ C1] [ 95.024604][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 95.024844][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 95.024986][ C1] HARDIRQ-ON-W at: [ 95.025094][ C1] __lock_acquire+0x797/0x1570 [ 95.025273][ C1] lock_acquire.part.0+0xeb/0x330 [ 95.025440][ C1] _raw_spin_lock+0x30/0x40 [ 95.025613][ C1] set_mems_allowed+0x1d/0x210 [ 95.025793][ C1] kernel_init_freeable+0x72/0x310 [ 95.025974][ C1] kernel_init+0x20/0x200 [ 95.026143][ C1] ret_from_fork+0x31/0x70 [ 95.026321][ C1] ret_from_fork_asm+0x1a/0x30 [ 95.026488][ C1] SOFTIRQ-ON-W at: [ 95.026589][ C1] __lock_acquire+0x797/0x1570 [ 95.026813][ C1] lock_acquire.part.0+0xeb/0x330 [ 95.026988][ C1] _raw_spin_lock+0x30/0x40 [ 95.027154][ C1] set_mems_allowed+0x1d/0x210 [ 95.027320][ C1] kernel_init_freeable+0x72/0x310 [ 95.027493][ C1] kernel_init+0x20/0x200 [ 95.027673][ C1] ret_from_fork+0x31/0x70 [ 95.027842][ C1] ret_from_fork_asm+0x1a/0x30 [ 95.028018][ C1] INITIAL USE at: [ 95.028122][ C1] __lock_acquire+0x797/0x1570 [ 95.028291][ C1] lock_acquire.part.0+0xeb/0x330 [ 95.028458][ C1] _raw_spin_lock+0x30/0x40 [ 95.028633][ C1] set_mems_allowed+0x1d/0x210 [ 95.028805][ C1] kernel_init_freeable+0x72/0x310 [ 95.028977][ C1] kernel_init+0x20/0x200 [ 95.029145][ C1] ret_from_fork+0x31/0x70 [ 95.029318][ C1] ret_from_fork_asm+0x1a/0x30 [ 95.029485][ C1] } [ 95.029555][ C1] ... key at: [] __key.387+0x0/0x40 [ 95.029769][ C1] ... acquired at: [ 95.029871][ C1] __lock_acquire+0xaf0/0x1570 [ 95.030010][ C1] lock_acquire.part.0+0xeb/0x330 [ 95.030150][ C1] _raw_spin_lock+0x30/0x40 [ 95.030288][ C1] __get_task_comm+0x27/0x70 [ 95.030426][ C1] ref_tracker_alloc+0x2ee/0x490 [ 95.030580][ C1] linkwatch_fire_event+0x196/0x200 [ 95.030736][ C1] veth_newlink+0x367/0x830 [veth] [ 95.030880][ C1] rtnl_newlink_create+0x341/0x850 [ 95.031014][ C1] __rtnl_newlink+0xac9/0xd80 [ 95.031160][ C1] rtnl_newlink+0x63/0xa0 [ 95.031306][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 95.031440][ C1] netlink_rcv_skb+0x130/0x360 [ 95.031574][ C1] netlink_unicast+0x449/0x710 [ 95.031717][ C1] netlink_sendmsg+0x723/0xbe0 [ 95.031853][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 95.031989][ C1] ___sys_sendmsg+0xee/0x170 [ 95.032122][ C1] __sys_sendmsg+0xcd/0x170 [ 95.032262][ C1] do_syscall_64+0xc6/0x1e0 [ 95.032409][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 95.032643][ C1] [ 95.032735][ C1] -> (lweventlist_lock){....}-{2:2} { [ 95.032932][ C1] INITIAL USE at: [ 95.033079][ C1] __lock_acquire+0x797/0x1570 [ 95.033334][ C1] lock_acquire.part.0+0xeb/0x330 [ 95.033584][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 95.033854][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 95.034114][ C1] rtnl_getlink+0x4c9/0x970 [ 95.034379][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 95.034640][ C1] netlink_rcv_skb+0x130/0x360 [ 95.034913][ C1] netlink_unicast+0x449/0x710 [ 95.035180][ C1] netlink_sendmsg+0x723/0xbe0 [ 95.035454][ C1] __sys_sendto+0x37d/0x410 [ 95.035730][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 95.035999][ C1] do_syscall_64+0xc6/0x1e0 [ 95.036265][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 95.036589][ C1] } [ 95.036686][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 95.036904][ C1] ... acquired at: [ 95.037009][ C1] __lock_acquire+0xaf0/0x1570 [ 95.037145][ C1] lock_acquire.part.0+0xeb/0x330 [ 95.037295][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 95.037430][ C1] linkwatch_fire_event+0x74/0x200 [ 95.037563][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 95.037780][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 95.037981][ C1] dev_set_mac_address+0x28a/0x410 [ 95.038124][ C1] dev_set_mac_address_user+0x31/0x50 [ 95.038257][ C1] do_setlink+0x17b4/0x21e0 [ 95.038439][ C1] rtnl_setlink+0x1f7/0x310 [ 95.038645][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 95.038849][ C1] netlink_rcv_skb+0x130/0x360 [ 95.039046][ C1] netlink_unicast+0x449/0x710 [ 95.039241][ C1] netlink_sendmsg+0x723/0xbe0 [ 95.039445][ C1] __sys_sendto+0x37d/0x410 [ 95.039646][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 95.039852][ C1] do_syscall_64+0xc6/0x1e0 [ 95.040054][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 95.040308][ C1] [ 95.040409][ C1] -> (&br->lock){+.-.}-{2:2} { [ 95.040630][ C1] HARDIRQ-ON-W at: [ 95.040782][ C1] __lock_acquire+0x797/0x1570 [ 95.041031][ C1] lock_acquire.part.0+0xeb/0x330 [ 95.041280][ C1] _raw_spin_lock_bh+0x38/0x50 [ 95.041539][ C1] br_set_mac_address+0xd2/0x260 [bridge] [ 95.041906][ C1] dev_set_mac_address+0x28a/0x410 [ 95.042165][ C1] dev_set_mac_address_user+0x31/0x50 [ 95.042417][ C1] do_setlink+0x17b4/0x21e0 [ 95.042676][ C1] rtnl_setlink+0x1f7/0x310 [ 95.042929][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 95.043196][ C1] netlink_rcv_skb+0x130/0x360 [ 95.043464][ C1] netlink_unicast+0x449/0x710 [ 95.043719][ C1] netlink_sendmsg+0x723/0xbe0 [ 95.043974][ C1] __sys_sendto+0x37d/0x410 [ 95.044223][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 95.044475][ C1] do_syscall_64+0xc6/0x1e0 [ 95.044741][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 95.045060][ C1] IN-SOFTIRQ-W at: [ 95.045208][ C1] __lock_acquire+0x797/0x1570 [ 95.045457][ C1] lock_acquire.part.0+0xeb/0x330 [ 95.045717][ C1] _raw_spin_lock+0x30/0x40 [ 95.045963][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 95.046325][ C1] call_timer_fn+0x13b/0x230 [ 95.046602][ C1] __run_timers+0x545/0x810 [ 95.046861][ C1] run_timer_softirq+0xe8/0x1b0 [ 95.047125][ C1] __do_softirq+0x1f8/0x5df [ 95.047400][ C1] irq_exit_rcu+0x97/0xc0 [ 95.047670][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 95.047990][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 95.048321][ C1] default_idle+0xf/0x20 [ 95.048588][ C1] default_idle_call+0x6d/0xb0 [ 95.048853][ C1] cpuidle_idle_call+0x1f4/0x280 [ 95.049121][ C1] do_idle+0xf9/0x160 [ 95.049339][ C1] cpu_startup_entry+0x54/0x60 [ 95.049601][ C1] start_secondary+0x21c/0x2b0 [ 95.049846][ C1] common_startup_64+0x12c/0x138 [ 95.050121][ C1] INITIAL USE at: [ 95.050276][ C1] __lock_acquire+0x797/0x1570 [ 95.050558][ C1] lock_acquire.part.0+0xeb/0x330 [ 95.050830][ C1] _raw_spin_lock_bh+0x38/0x50 [ 95.051105][ C1] br_set_mac_address+0xd2/0x260 [bridge] [ 95.051494][ C1] dev_set_mac_address+0x28a/0x410 [ 95.051759][ C1] dev_set_mac_address_user+0x31/0x50 [ 95.052009][ C1] do_setlink+0x17b4/0x21e0 [ 95.052250][ C1] rtnl_setlink+0x1f7/0x310 [ 95.052503][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 95.052754][ C1] netlink_rcv_skb+0x130/0x360 [ 95.053006][ C1] netlink_unicast+0x449/0x710 [ 95.053255][ C1] netlink_sendmsg+0x723/0xbe0 [ 95.053511][ C1] __sys_sendto+0x37d/0x410 [ 95.053920][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 95.054187][ C1] do_syscall_64+0xc6/0x1e0 [ 95.054451][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 95.054769][ C1] } [ 95.055024][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 95.055476][ C1] ... acquired at: [ 95.055636][ C1] mark_lock+0x28d/0x3e0 [ 95.055848][ C1] mark_usage+0xd9/0x2a0 [ 95.056201][ C1] __lock_acquire+0x797/0x1570 [ 95.056419][ C1] lock_acquire.part.0+0xeb/0x330 [ 95.056638][ C1] _raw_spin_lock+0x30/0x40 [ 95.056869][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 95.057519][ C1] call_timer_fn+0x13b/0x230 [ 95.057742][ C1] __run_timers+0x545/0x810 [ 95.057969][ C1] run_timer_softirq+0xe8/0x1b0 [ 95.058184][ C1] __do_softirq+0x1f8/0x5df [ 95.058400][ C1] irq_exit_rcu+0x97/0xc0 [ 95.058613][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 95.058877][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 95.059151][ C1] default_idle+0xf/0x20 [ 95.059362][ C1] default_idle_call+0x6d/0xb0 [ 95.059567][ C1] cpuidle_idle_call+0x1f4/0x280 [ 95.059789][ C1] do_idle+0xf9/0x160 [ 95.059950][ C1] cpu_startup_entry+0x54/0x60 [ 95.060288][ C1] start_secondary+0x21c/0x2b0 [ 95.060506][ C1] common_startup_64+0x12c/0x138 [ 95.060734][ C1] [ 95.060839][ C1] [ 95.060839][ C1] stack backtrace: [ 95.061099][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 95.061559][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 95.062030][ C1] Call Trace: [ 95.062206][ C1] [ 95.062326][ C1] dump_stack_lvl+0x82/0xd0 [ 95.062544][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 95.062811][ C1] ? common_startup_64+0x12c/0x138 [ 95.063022][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 95.063289][ C1] ? __pfx_usage_skip+0x10/0x10 [ 95.063505][ C1] ? __pfx_usage_match+0x10/0x10 [ 95.063723][ C1] ? arch_stack_walk+0x8c/0xf0 [ 95.063942][ C1] mark_lock_irq+0x4cd/0xa10 [ 95.064293][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 95.064504][ C1] ? stack_trace_save+0x94/0xd0 [ 95.064719][ C1] ? add_chain_cache+0x248/0x8b0 [ 95.064931][ C1] ? save_trace+0x8f/0x5b0 [ 95.065272][ C1] mark_lock+0x28d/0x3e0 [ 95.065440][ C1] mark_usage+0xd9/0x2a0 [ 95.065621][ C1] __lock_acquire+0x797/0x1570 [ 95.065848][ C1] ? __lock_acquire+0xaf0/0x1570 [ 95.066076][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 95.066632][ C1] lock_acquire.part.0+0xeb/0x330 [ 95.066832][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 95.067057][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 95.067204][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 95.067350][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 95.067571][ C1] ? lock_acquire+0x32/0xc0 [ 95.067726][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 95.067944][ C1] _raw_spin_lock+0x30/0x40 [ 95.068097][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 95.068315][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 95.068529][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 95.068886][ C1] call_timer_fn+0x13b/0x230 [ 95.069036][ C1] ? call_timer_fn+0xe8/0x230 [ 95.069182][ C1] ? call_timer_fn+0xe8/0x230 [ 95.069328][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 95.069551][ C1] ? mark_lock+0x38/0x3e0 [ 95.069678][ C1] __run_timers+0x545/0x810 [ 95.069834][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 95.070089][ C1] ? __pfx___run_timers+0x10/0x10 [ 95.070317][ C1] ? do_raw_spin_lock+0x131/0x270 [ 95.070462][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 95.070621][ C1] ? lock_acquire+0x32/0xc0 [ 95.070766][ C1] ? run_timer_softirq+0xe0/0x1b0 [ 95.070993][ C1] run_timer_softirq+0xe8/0x1b0 [ 95.071138][ C1] __do_softirq+0x1f8/0x5df [ 95.071284][ C1] irq_exit_rcu+0x97/0xc0 [ 95.071393][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 95.071540][ C1] [ 95.071778][ C1] [ 95.071853][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 95.072031][ C1] RIP: 0010:default_idle+0xf/0x20 [ 95.072185][ 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 [ 95.072794][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000246 [ 95.072984][ C1] RAX: 0000000000116c95 RBX: 1ffff92000029fc1 RCX: ffffffff8f70e9d5 [ 95.073278][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8d0aa4a4 [ 95.073496][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1709c [ 95.073715][ C1] R10: ffff8880360b84e3 R11: ffff8880360ad9b0 R12: 0000000000000000 [ 95.074018][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 95.074246][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 95.074390][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 95.074615][ C1] default_idle_call+0x6d/0xb0 [ 95.074763][ C1] cpuidle_idle_call+0x1f4/0x280 [ 95.074905][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 95.075049][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 95.075273][ C1] do_idle+0xf9/0x160 [ 95.075384][ C1] cpu_startup_entry+0x54/0x60 [ 95.075535][ C1] start_secondary+0x21c/0x2b0 [ 95.075680][ C1] ? __pfx_start_secondary+0x10/0x10 [ 95.075826][ C1] common_startup_64+0x12c/0x138 [ 95.076055][ C1] [ 105.236779][ T586] br0: entered allmulticast mode [ 111.394934][ T601] br0: left allmulticast mode [ 119.720487][ T671] br0: left promiscuous mode [ 120.053091][ T676] br0: port 1(veth1) entered disabled state [ 120.637777][ T681] veth1: left allmulticast mode [ 120.637996][ T681] veth1: left promiscuous mode [ 120.638257][ T681] br0: port 1(veth1) entered disabled state