[ 26.125136][ T236] ip (236) used greatest stack depth: 23200 bytes left [ 30.210011][ T285] br0: port 1(veth1) entered blocking state [ 30.210417][ T285] br0: port 1(veth1) entered disabled state [ 30.210751][ T285] veth1: entered allmulticast mode [ 30.213793][ T285] veth1: entered promiscuous mode [ 30.333202][ T287] br0: port 2(veth2) entered blocking state [ 30.333444][ T287] br0: port 2(veth2) entered disabled state [ 30.333914][ T287] veth2: entered allmulticast mode [ 30.336307][ T287] veth2: entered promiscuous mode [ 30.577928][ T9] br0: port 1(veth1) entered blocking state [ 30.578276][ T9] br0: port 1(veth1) entered forwarding state [ 30.695517][ T49] br0: port 2(veth2) entered blocking state [ 30.695790][ T49] br0: port 2(veth2) entered forwarding state [ 39.685858][ T317] veth0: entered promiscuous mode [ 40.327508][ T323] GACT probability NOT on [ 45.869318][ C0] [ 45.869548][ C0] ======================================================== [ 45.869798][ C0] WARNING: possible irq lock inversion dependency detected [ 45.870044][ C0] 6.9.0-rc1-virtme #1 Not tainted [ 45.870196][ C0] -------------------------------------------------------- [ 45.870422][ C0] swapper/0/0 just changed the state of lock: [ 45.870637][ C0] ffff88800834ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.871093][ C0] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 45.871346][ C0] (&p->alloc_lock){+.+.}-{2:2} [ 45.871351][ C0] [ 45.871351][ C0] [ 45.871351][ C0] and interrupts could create inverse lock ordering between them. [ 45.871351][ C0] [ 45.871974][ C0] [ 45.871974][ C0] other info that might help us debug this: [ 45.872215][ C0] Chain exists of: [ 45.872215][ C0] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 45.872215][ C0] [ 45.872614][ C0] Possible interrupt unsafe locking scenario: [ 45.872614][ C0] [ 45.872880][ C0] CPU0 CPU1 [ 45.873051][ C0] ---- ---- [ 45.873226][ C0] lock(&p->alloc_lock); [ 45.873353][ C0] local_irq_disable(); [ 45.873581][ C0] lock(&br->lock); [ 45.873794][ C0] lock(lweventlist_lock); [ 45.874008][ C0] [ 45.874144][ C0] lock(&br->lock); [ 45.874279][ C0] [ 45.874279][ C0] *** DEADLOCK *** [ 45.874279][ C0] [ 45.874536][ C0] 1 lock held by swapper/0/0: [ 45.874716][ C0] #0: ffffc90000007d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 45.875072][ C0] [ 45.875072][ C0] the shortest dependencies between 2nd lock and 1st lock: [ 45.875371][ C0] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.875552][ C0] HARDIRQ-ON-W at: [ 45.875681][ C0] __lock_acquire+0x797/0x1570 [ 45.875896][ C0] lock_acquire.part.0+0xeb/0x330 [ 45.876104][ C0] _raw_spin_lock+0x30/0x40 [ 45.876312][ C0] set_mems_allowed+0x1d/0x210 [ 45.876530][ C0] kernel_init_freeable+0x72/0x310 [ 45.876752][ C0] kernel_init+0x20/0x200 [ 45.876978][ C0] ret_from_fork+0x31/0x70 [ 45.877188][ C0] ret_from_fork_asm+0x1a/0x30 [ 45.877379][ C0] SOFTIRQ-ON-W at: [ 45.877508][ C0] __lock_acquire+0x797/0x1570 [ 45.877711][ C0] lock_acquire.part.0+0xeb/0x330 [ 45.877923][ C0] _raw_spin_lock+0x30/0x40 [ 45.878117][ C0] set_mems_allowed+0x1d/0x210 [ 45.878317][ C0] kernel_init_freeable+0x72/0x310 [ 45.878524][ C0] kernel_init+0x20/0x200 [ 45.878728][ C0] ret_from_fork+0x31/0x70 [ 45.878935][ C0] ret_from_fork_asm+0x1a/0x30 [ 45.879144][ C0] INITIAL USE at: [ 45.879256][ C0] __lock_acquire+0x797/0x1570 [ 45.879473][ C0] lock_acquire.part.0+0xeb/0x330 [ 45.879675][ C0] _raw_spin_lock+0x30/0x40 [ 45.879867][ C0] set_mems_allowed+0x1d/0x210 [ 45.880059][ C0] kernel_init_freeable+0x72/0x310 [ 45.880266][ C0] kernel_init+0x20/0x200 [ 45.880461][ C0] ret_from_fork+0x31/0x70 [ 45.880661][ C0] ret_from_fork_asm+0x1a/0x30 [ 45.880869][ C0] } [ 45.880956][ C0] ... key at: [] __key.387+0x0/0x40 [ 45.881202][ C0] ... acquired at: [ 45.881326][ C0] __lock_acquire+0xaf0/0x1570 [ 45.881504][ C0] lock_acquire.part.0+0xeb/0x330 [ 45.881672][ C0] _raw_spin_lock+0x30/0x40 [ 45.881834][ C0] __get_task_comm+0x27/0x70 [ 45.882002][ C0] ref_tracker_alloc+0x2ee/0x490 [ 45.882173][ C0] linkwatch_fire_event+0x196/0x200 [ 45.882340][ C0] veth_newlink+0x367/0x830 [veth] [ 45.882523][ C0] rtnl_newlink_create+0x341/0x850 [ 45.882687][ C0] __rtnl_newlink+0xac9/0xd80 [ 45.882857][ C0] rtnl_newlink+0x63/0xa0 [ 45.883026][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.883188][ C0] netlink_rcv_skb+0x130/0x360 [ 45.883355][ C0] netlink_unicast+0x449/0x710 [ 45.883537][ C0] netlink_sendmsg+0x723/0xbe0 [ 45.883707][ C0] ____sys_sendmsg+0x7b2/0xa10 [ 45.883873][ C0] ___sys_sendmsg+0xee/0x170 [ 45.884038][ C0] __sys_sendmsg+0xcd/0x170 [ 45.884202][ C0] do_syscall_64+0xc6/0x1e0 [ 45.884376][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.884588][ C0] [ 45.884674][ C0] -> (lweventlist_lock){....}-{2:2} { [ 45.884841][ C0] INITIAL USE at: [ 45.884963][ C0] __lock_acquire+0x797/0x1570 [ 45.885171][ C0] lock_acquire.part.0+0xeb/0x330 [ 45.885378][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.885600][ C0] linkwatch_sync_dev+0x29/0x1f0 [ 45.885805][ C0] rtnl_getlink+0x4c9/0x970 [ 45.886005][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.886193][ C0] netlink_rcv_skb+0x130/0x360 [ 45.886386][ C0] netlink_unicast+0x449/0x710 [ 45.886593][ C0] netlink_sendmsg+0x723/0xbe0 [ 45.886796][ C0] __sys_sendto+0x37d/0x410 [ 45.887010][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 45.887205][ C0] do_syscall_64+0xc6/0x1e0 [ 45.887393][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.887647][ C0] } [ 45.887720][ C0] ... key at: [] lweventlist_lock+0x18/0x60 [ 45.887951][ C0] ... acquired at: [ 45.888080][ C0] __lock_acquire+0xaf0/0x1570 [ 45.888246][ C0] lock_acquire.part.0+0xeb/0x330 [ 45.888405][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.888570][ C0] linkwatch_fire_event+0x74/0x200 [ 45.888730][ C0] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 45.888981][ C0] br_set_mac_address+0x1f3/0x260 [bridge] [ 45.889205][ C0] dev_set_mac_address+0x28a/0x410 [ 45.889381][ C0] dev_set_mac_address_user+0x31/0x50 [ 45.889551][ C0] do_setlink+0x17b4/0x21e0 [ 45.889715][ C0] rtnl_setlink+0x1f7/0x310 [ 45.889878][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.890044][ C0] netlink_rcv_skb+0x130/0x360 [ 45.890210][ C0] netlink_unicast+0x449/0x710 [ 45.890375][ C0] netlink_sendmsg+0x723/0xbe0 [ 45.890544][ C0] __sys_sendto+0x37d/0x410 [ 45.890713][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 45.890880][ C0] do_syscall_64+0xc6/0x1e0 [ 45.891044][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.891249][ C0] [ 45.891331][ C0] -> (&br->lock){+.-.}-{2:2} { [ 45.891509][ C0] HARDIRQ-ON-W at: [ 45.891634][ C0] __lock_acquire+0x797/0x1570 [ 45.891842][ C0] lock_acquire.part.0+0xeb/0x330 [ 45.892045][ C0] _raw_spin_lock_bh+0x38/0x50 [ 45.892262][ C0] br_set_ageing_time+0x2d/0xf0 [bridge] [ 45.892557][ C0] br_changelink+0x231/0x1360 [bridge] [ 45.892803][ C0] br_dev_newlink+0xa5/0x100 [bridge] [ 45.893048][ C0] rtnl_newlink_create+0x341/0x850 [ 45.893253][ C0] __rtnl_newlink+0xac9/0xd80 [ 45.893467][ C0] rtnl_newlink+0x63/0xa0 [ 45.893679][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.893885][ C0] netlink_rcv_skb+0x130/0x360 [ 45.894091][ C0] netlink_unicast+0x449/0x710 [ 45.894288][ C0] netlink_sendmsg+0x723/0xbe0 [ 45.894496][ C0] ____sys_sendmsg+0x7b2/0xa10 [ 45.894702][ C0] ___sys_sendmsg+0xee/0x170 [ 45.894890][ C0] __sys_sendmsg+0xcd/0x170 [ 45.895103][ C0] do_syscall_64+0xc6/0x1e0 [ 45.895310][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.895577][ C0] IN-SOFTIRQ-W at: [ 45.895700][ C0] __lock_acquire+0x797/0x1570 [ 45.895902][ C0] lock_acquire.part.0+0xeb/0x330 [ 45.896104][ C0] _raw_spin_lock+0x30/0x40 [ 45.896318][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.896611][ C0] call_timer_fn+0x13b/0x230 [ 45.896803][ C0] __run_timers+0x545/0x810 [ 45.897014][ C0] run_timer_softirq+0xe8/0x1b0 [ 45.897220][ C0] __do_softirq+0x1f8/0x5df [ 45.897406][ C0] irq_exit_rcu+0x97/0xc0 [ 45.897607][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.897866][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.898116][ C0] default_idle+0xf/0x20 [ 45.898323][ C0] default_idle_call+0x6d/0xb0 [ 45.898530][ C0] cpuidle_idle_call+0x1f4/0x280 [ 45.898742][ C0] do_idle+0xf9/0x160 [ 45.898907][ C0] cpu_startup_entry+0x54/0x60 [ 45.899119][ C0] rest_init+0x14f/0x260 [ 45.899333][ C0] start_kernel+0x318/0x3d0 [ 45.899541][ C0] x86_64_start_reservations+0x18/0x30 [ 45.899746][ C0] x86_64_start_kernel+0xba/0x110 [ 45.899952][ C0] common_startup_64+0x12c/0x138 [ 45.900160][ C0] INITIAL USE at: [ 45.900299][ C0] __lock_acquire+0x797/0x1570 [ 45.900503][ C0] lock_acquire.part.0+0xeb/0x330 [ 45.900711][ C0] _raw_spin_lock_bh+0x38/0x50 [ 45.900918][ C0] br_set_ageing_time+0x2d/0xf0 [bridge] [ 45.901203][ C0] br_changelink+0x231/0x1360 [bridge] [ 45.901452][ C0] br_dev_newlink+0xa5/0x100 [bridge] [ 45.901699][ C0] rtnl_newlink_create+0x341/0x850 [ 45.901906][ C0] __rtnl_newlink+0xac9/0xd80 [ 45.902114][ C0] rtnl_newlink+0x63/0xa0 [ 45.902319][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.902515][ C0] netlink_rcv_skb+0x130/0x360 [ 45.902705][ C0] netlink_unicast+0x449/0x710 [ 45.902912][ C0] netlink_sendmsg+0x723/0xbe0 [ 45.903108][ C0] ____sys_sendmsg+0x7b2/0xa10 [ 45.903301][ C0] ___sys_sendmsg+0xee/0x170 [ 45.903505][ C0] __sys_sendmsg+0xcd/0x170 [ 45.903706][ C0] do_syscall_64+0xc6/0x1e0 [ 45.903913][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.904142][ C0] } [ 45.904217][ C0] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 45.904641][ C0] ... acquired at: [ 45.904767][ C0] mark_lock+0x28d/0x3e0 [ 45.904932][ C0] mark_usage+0xd9/0x2a0 [ 45.905093][ C0] __lock_acquire+0x797/0x1570 [ 45.905340][ C0] lock_acquire.part.0+0xeb/0x330 [ 45.905489][ C0] _raw_spin_lock+0x30/0x40 [ 45.905641][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.905882][ C0] call_timer_fn+0x13b/0x230 [ 45.906056][ C0] __run_timers+0x545/0x810 [ 45.906221][ C0] run_timer_softirq+0xe8/0x1b0 [ 45.906384][ C0] __do_softirq+0x1f8/0x5df [ 45.906554][ C0] irq_exit_rcu+0x97/0xc0 [ 45.906809][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.907027][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.907230][ C0] default_idle+0xf/0x20 [ 45.907398][ C0] default_idle_call+0x6d/0xb0 [ 45.907665][ C0] cpuidle_idle_call+0x1f4/0x280 [ 45.907828][ C0] do_idle+0xf9/0x160 [ 45.907955][ C0] cpu_startup_entry+0x54/0x60 [ 45.908120][ C0] rest_init+0x14f/0x260 [ 45.908378][ C0] start_kernel+0x318/0x3d0 [ 45.908545][ C0] x86_64_start_reservations+0x18/0x30 [ 45.908711][ C0] x86_64_start_kernel+0xba/0x110 [ 45.908874][ C0] common_startup_64+0x12c/0x138 [ 45.909237][ C0] [ 45.909321][ C0] [ 45.909321][ C0] stack backtrace: [ 45.909528][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc1-virtme #1 [ 45.909776][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.910136][ C0] Call Trace: [ 45.910261][ C0] [ 45.910345][ C0] dump_stack_lvl+0x82/0xd0 [ 45.910516][ C0] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 45.910821][ C0] ? common_startup_64+0x12c/0x138 [ 45.910969][ C0] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 45.911170][ C0] ? __pfx_usage_skip+0x10/0x10 [ 45.911319][ C0] ? __pfx_usage_match+0x10/0x10 [ 45.911565][ C0] ? arch_stack_walk+0x8c/0xf0 [ 45.911724][ C0] mark_lock_irq+0x4cd/0xa10 [ 45.911891][ C0] ? __pfx_mark_lock_irq+0x10/0x10 [ 45.912056][ C0] ? stack_trace_save+0x94/0xd0 [ 45.912315][ C0] ? add_chain_cache+0x248/0x8b0 [ 45.912464][ C0] ? save_trace+0x8f/0x5b0 [ 45.912631][ C0] mark_lock+0x28d/0x3e0 [ 45.912748][ C0] mark_usage+0xd9/0x2a0 [ 45.912864][ C0] __lock_acquire+0x797/0x1570 [ 45.913118][ C0] ? __lock_acquire+0xaf0/0x1570 [ 45.913284][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.913557][ C0] lock_acquire.part.0+0xeb/0x330 [ 45.913717][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.914036][ C0] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.914199][ C0] ? trace_lock_acquire+0x135/0x1c0 [ 45.914358][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.914692][ C0] ? lock_acquire+0x32/0xc0 [ 45.914855][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.915095][ C0] _raw_spin_lock+0x30/0x40 [ 45.915265][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.915592][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.915836][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.916114][ C0] call_timer_fn+0x13b/0x230 [ 45.916284][ C0] ? call_timer_fn+0xe8/0x230 [ 45.916546][ C0] ? call_timer_fn+0xe8/0x230 [ 45.916715][ C0] ? __pfx_call_timer_fn+0x10/0x10 [ 45.916893][ C0] ? mark_lock+0x38/0x3e0 [ 45.917024][ C0] __run_timers+0x545/0x810 [ 45.917282][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.917568][ C0] ? __pfx___run_timers+0x10/0x10 [ 45.917733][ C0] ? do_raw_spin_lock+0x131/0x270 [ 45.917902][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.918071][ C0] ? lock_acquire+0x32/0xc0 [ 45.918241][ C0] ? run_timer_softirq+0xe0/0x1b0 [ 45.918425][ C0] run_timer_softirq+0xe8/0x1b0 [ 45.918596][ C0] __do_softirq+0x1f8/0x5df [ 45.918852][ C0] irq_exit_rcu+0x97/0xc0 [ 45.918975][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.919135][ C0] [ 45.919212][ C0] [ 45.919288][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.919570][ C0] RIP: 0010:default_idle+0xf/0x20 [ 45.919736][ 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 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 [ 45.920385][ C0] RSP: 0018:ffffffffac207e00 EFLAGS: 00000246 [ 45.920578][ C0] RAX: 00000000000a702b RBX: 1ffffffff5840fc2 RCX: ffffffffab30e9d5 [ 45.920798][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa8caa4a4 [ 45.921127][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f0709c [ 45.921377][ C0] R10: ffff88802f8384e3 R11: ffff88802f82d9b0 R12: 0000000000000000 [ 45.921625][ C0] R13: ffffffffac21d000 R14: dffffc0000000000 R15: 0000000000014770 [ 45.922047][ C0] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 45.922207][ C0] ? cpuidle_idle_call+0x1f4/0x280 [ 45.922355][ C0] default_idle_call+0x6d/0xb0 [ 45.922526][ C0] cpuidle_idle_call+0x1f4/0x280 [ 45.922777][ C0] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 45.922941][ C0] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 45.923109][ C0] do_idle+0xf9/0x160 [ 45.923234][ C0] cpu_startup_entry+0x54/0x60 [ 45.923397][ C0] rest_init+0x14f/0x260 [ 45.923609][ C0] start_kernel+0x318/0x3d0 [ 45.923773][ C0] x86_64_start_reservations+0x18/0x30 [ 45.923941][ C0] x86_64_start_kernel+0xba/0x110 [ 45.924110][ C0] common_startup_64+0x12c/0x138 [ 45.924371][ C0] [ 66.859461][ T351] veth0: left promiscuous mode [ 67.168380][ T355] veth3: entered promiscuous mode [ 69.063940][ T364] veth3: left promiscuous mode [ 69.284728][ T366] veth3: entered promiscuous mode [ 71.177510][ T375] veth3: left promiscuous mode [ 71.394135][ T378] veth3: entered promiscuous mode [ 73.275849][ T387] veth3: left promiscuous mode [ 73.478975][ T389] veth3: entered promiscuous mode [ 75.421347][ T398] veth3: left promiscuous mode [ 75.615782][ T400] br0: port 2(veth2) entered disabled state [ 75.747987][ T401] br0: port 1(veth1) entered disabled state [ 75.877634][ T402] veth2: left allmulticast mode [ 75.877846][ T402] veth2: left promiscuous mode [ 75.878148][ T402] br0: port 2(veth2) entered disabled state [ 75.879224][ T402] veth1: left allmulticast mode [ 75.879399][ T402] veth1: left promiscuous mode [ 75.879672][ T402] br0: port 1(veth1) entered disabled state