[ 97.375976][ T692] br0: port 1(veth1) entered blocking state [ 97.376269][ T692] br0: port 1(veth1) entered disabled state [ 97.376545][ T692] veth1: entered allmulticast mode [ 97.378487][ T692] veth1: entered promiscuous mode [ 97.536684][ T693] br0: port 2(veth2) entered blocking state [ 97.536941][ T693] br0: port 2(veth2) entered disabled state [ 97.537215][ T693] veth2: entered allmulticast mode [ 97.539066][ T693] veth2: entered promiscuous mode [ 97.802126][ T51] br0: port 1(veth1) entered blocking state [ 97.802613][ T51] br0: port 1(veth1) entered forwarding state [ 97.912750][ T51] br0: port 2(veth2) entered blocking state [ 97.913448][ T51] br0: port 2(veth2) entered forwarding state [ 106.897598][ T723] veth0: entered promiscuous mode [ 112.948640][ C1] [ 112.948793][ C1] ======================================================== [ 112.949003][ C1] WARNING: possible irq lock inversion dependency detected [ 112.949223][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 112.949366][ C1] -------------------------------------------------------- [ 112.949593][ C1] swapper/1/0 just changed the state of lock: [ 112.949771][ C1] ffff8880053f2c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 112.950138][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 112.950344][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 112.950348][ C1] [ 112.950348][ C1] [ 112.950348][ C1] and interrupts could create inverse lock ordering between them. [ 112.950348][ C1] [ 112.950851][ C1] [ 112.950851][ C1] other info that might help us debug this: [ 112.951055][ C1] Chain exists of: [ 112.951055][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 112.951055][ C1] [ 112.951367][ C1] Possible interrupt unsafe locking scenario: [ 112.951367][ C1] [ 112.951769][ C1] CPU0 CPU1 [ 112.951945][ C1] ---- ---- [ 112.952100][ C1] lock(&p->alloc_lock); [ 112.952223][ C1] local_irq_disable(); [ 112.952408][ C1] lock(&br->lock); [ 112.952598][ C1] lock(lweventlist_lock); [ 112.952790][ C1] [ 112.952906][ C1] lock(&br->lock); [ 112.953025][ C1] [ 112.953025][ C1] *** DEADLOCK *** [ 112.953025][ C1] [ 112.953243][ C1] 1 lock held by swapper/1/0: [ 112.953402][ C1] #0: ffffc900001d8b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 112.953724][ C1] [ 112.953724][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 112.953987][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 112.954145][ C1] HARDIRQ-ON-W at: [ 112.954263][ C1] __lock_acquire+0x797/0x1570 [ 112.954463][ C1] lock_acquire.part.0+0xeb/0x330 [ 112.954659][ C1] _raw_spin_lock+0x30/0x40 [ 112.954856][ C1] set_mems_allowed+0x1d/0x210 [ 112.955048][ C1] kernel_init_freeable+0x72/0x310 [ 112.955239][ C1] kernel_init+0x20/0x200 [ 112.955434][ C1] ret_from_fork+0x31/0x70 [ 112.955628][ C1] ret_from_fork_asm+0x1a/0x30 [ 112.955823][ C1] SOFTIRQ-ON-W at: [ 112.955936][ C1] __lock_acquire+0x797/0x1570 [ 112.956130][ C1] lock_acquire.part.0+0xeb/0x330 [ 112.956319][ C1] _raw_spin_lock+0x30/0x40 [ 112.956509][ C1] set_mems_allowed+0x1d/0x210 [ 112.956706][ C1] kernel_init_freeable+0x72/0x310 [ 112.956901][ C1] kernel_init+0x20/0x200 [ 112.957091][ C1] ret_from_fork+0x31/0x70 [ 112.957283][ C1] ret_from_fork_asm+0x1a/0x30 [ 112.957477][ C1] INITIAL USE at: [ 112.957590][ C1] __lock_acquire+0x797/0x1570 [ 112.957780][ C1] lock_acquire.part.0+0xeb/0x330 [ 112.957977][ C1] _raw_spin_lock+0x30/0x40 [ 112.958174][ C1] set_mems_allowed+0x1d/0x210 [ 112.958363][ C1] kernel_init_freeable+0x72/0x310 [ 112.958554][ C1] kernel_init+0x20/0x200 [ 112.958750][ C1] ret_from_fork+0x31/0x70 [ 112.958943][ C1] ret_from_fork_asm+0x1a/0x30 [ 112.959136][ C1] } [ 112.959215][ C1] ... key at: [] __key.387+0x0/0x40 [ 112.959453][ C1] ... acquired at: [ 112.959566][ C1] __lock_acquire+0xaf0/0x1570 [ 112.959720][ C1] lock_acquire.part.0+0xeb/0x330 [ 112.959871][ C1] _raw_spin_lock+0x30/0x40 [ 112.960023][ C1] __get_task_comm+0x27/0x70 [ 112.960174][ C1] ref_tracker_alloc+0x2ee/0x490 [ 112.960328][ C1] linkwatch_fire_event+0x196/0x200 [ 112.960486][ C1] veth_newlink+0x367/0x830 [veth] [ 112.960647][ C1] rtnl_newlink_create+0x341/0x850 [ 112.960807][ C1] __rtnl_newlink+0xac9/0xd80 [ 112.960960][ C1] rtnl_newlink+0x63/0xa0 [ 112.961114][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 112.961263][ C1] netlink_rcv_skb+0x130/0x360 [ 112.961421][ C1] netlink_unicast+0x449/0x710 [ 112.961591][ C1] netlink_sendmsg+0x723/0xbe0 [ 112.961750][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 112.961913][ C1] ___sys_sendmsg+0xee/0x170 [ 112.962059][ C1] __sys_sendmsg+0xcd/0x170 [ 112.962199][ C1] do_syscall_64+0xc6/0x1e0 [ 112.962337][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 112.962511][ C1] [ 112.962582][ C1] -> (lweventlist_lock){....}-{2:2} { [ 112.962725][ C1] INITIAL USE at: [ 112.962857][ C1] __lock_acquire+0x797/0x1570 [ 112.963053][ C1] lock_acquire.part.0+0xeb/0x330 [ 112.963241][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 112.963431][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 112.963618][ C1] rtnl_getlink+0x4c9/0x970 [ 112.963810][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 112.964006][ C1] netlink_rcv_skb+0x130/0x360 [ 112.964196][ C1] netlink_unicast+0x449/0x710 [ 112.964385][ C1] netlink_sendmsg+0x723/0xbe0 [ 112.964574][ C1] __sys_sendto+0x37d/0x410 [ 112.964769][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 112.964958][ C1] do_syscall_64+0xc6/0x1e0 [ 112.965155][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 112.965385][ C1] } [ 112.965461][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 112.965690][ C1] ... acquired at: [ 112.965804][ C1] __lock_acquire+0xaf0/0x1570 [ 112.965961][ C1] lock_acquire.part.0+0xeb/0x330 [ 112.966114][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 112.966266][ C1] linkwatch_fire_event+0x74/0x200 [ 112.966425][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 112.966662][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 112.966890][ C1] dev_set_mac_address+0x28a/0x410 [ 112.967042][ C1] dev_set_mac_address_user+0x31/0x50 [ 112.967193][ C1] do_setlink+0x17b4/0x21e0 [ 112.967347][ C1] rtnl_setlink+0x1f7/0x310 [ 112.967498][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 112.967655][ C1] netlink_rcv_skb+0x130/0x360 [ 112.967806][ C1] netlink_unicast+0x449/0x710 [ 112.967959][ C1] netlink_sendmsg+0x723/0xbe0 [ 112.968107][ C1] __sys_sendto+0x37d/0x410 [ 112.968256][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 112.968408][ C1] do_syscall_64+0xc6/0x1e0 [ 112.968562][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 112.968752][ C1] [ 112.968828][ C1] -> (&br->lock){+.-.}-{2:2} { [ 112.968989][ C1] HARDIRQ-ON-W at: [ 112.969103][ C1] __lock_acquire+0x797/0x1570 [ 112.969295][ C1] lock_acquire.part.0+0xeb/0x330 [ 112.969482][ C1] _raw_spin_lock_bh+0x38/0x50 [ 112.969674][ C1] br_set_ageing_time+0x2d/0xf0 [bridge] [ 112.969943][ C1] br_changelink+0x231/0x1360 [bridge] [ 112.970170][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 112.970403][ C1] rtnl_newlink_create+0x341/0x850 [ 112.970591][ C1] __rtnl_newlink+0xac9/0xd80 [ 112.970784][ C1] rtnl_newlink+0x63/0xa0 [ 112.970976][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 112.971167][ C1] netlink_rcv_skb+0x130/0x360 [ 112.971365][ C1] netlink_unicast+0x449/0x710 [ 112.971569][ C1] netlink_sendmsg+0x723/0xbe0 [ 112.971770][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 112.971966][ C1] ___sys_sendmsg+0xee/0x170 [ 112.972160][ C1] __sys_sendmsg+0xcd/0x170 [ 112.972350][ C1] do_syscall_64+0xc6/0x1e0 [ 112.972538][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 112.972765][ C1] IN-SOFTIRQ-W at: [ 112.972883][ C1] __lock_acquire+0x797/0x1570 [ 112.973071][ C1] lock_acquire.part.0+0xeb/0x330 [ 112.973264][ C1] _raw_spin_lock+0x30/0x40 [ 112.973454][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 112.973716][ C1] call_timer_fn+0x13b/0x230 [ 112.973904][ C1] __run_timers+0x545/0x810 [ 112.974103][ C1] timer_expire_remote+0x9b/0xe0 [ 112.974290][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 112.974480][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 112.974671][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 112.974860][ C1] __do_softirq+0x1f8/0x5df [ 112.975046][ C1] irq_exit_rcu+0x97/0xc0 [ 112.975244][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 112.975472][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 112.975700][ C1] default_idle+0xf/0x20 [ 112.975891][ C1] default_idle_call+0x6d/0xb0 [ 112.976080][ C1] cpuidle_idle_call+0x1f4/0x280 [ 112.976267][ C1] do_idle+0xf9/0x160 [ 112.976421][ C1] cpu_startup_entry+0x54/0x60 [ 112.976618][ C1] start_secondary+0x21c/0x2b0 [ 112.976808][ C1] common_startup_64+0x12c/0x138 [ 112.976998][ C1] INITIAL USE at: [ 112.977114][ C1] __lock_acquire+0x797/0x1570 [ 112.977307][ C1] lock_acquire.part.0+0xeb/0x330 [ 112.977496][ C1] _raw_spin_lock_bh+0x38/0x50 [ 112.977690][ C1] br_set_ageing_time+0x2d/0xf0 [bridge] [ 112.977955][ C1] br_changelink+0x231/0x1360 [bridge] [ 112.978180][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 112.978403][ C1] rtnl_newlink_create+0x341/0x850 [ 112.978593][ C1] __rtnl_newlink+0xac9/0xd80 [ 112.978779][ C1] rtnl_newlink+0x63/0xa0 [ 112.978969][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 112.979155][ C1] netlink_rcv_skb+0x130/0x360 [ 112.979348][ C1] netlink_unicast+0x449/0x710 [ 112.979538][ C1] netlink_sendmsg+0x723/0xbe0 [ 112.979729][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 112.979919][ C1] ___sys_sendmsg+0xee/0x170 [ 112.980107][ C1] __sys_sendmsg+0xcd/0x170 [ 112.980304][ C1] do_syscall_64+0xc6/0x1e0 [ 112.980491][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 112.980803][ C1] } [ 112.980879][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 112.981174][ C1] ... acquired at: [ 112.981286][ C1] mark_lock+0x28d/0x3e0 [ 112.981527][ C1] mark_usage+0xd9/0x2a0 [ 112.981677][ C1] __lock_acquire+0x797/0x1570 [ 112.981833][ C1] lock_acquire.part.0+0xeb/0x330 [ 112.981985][ C1] _raw_spin_lock+0x30/0x40 [ 112.982218][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 112.982443][ C1] call_timer_fn+0x13b/0x230 [ 112.982594][ C1] __run_timers+0x545/0x810 [ 112.982743][ C1] timer_expire_remote+0x9b/0xe0 [ 112.983053][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 112.983207][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 112.983355][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 112.983506][ C1] __do_softirq+0x1f8/0x5df [ 112.983737][ C1] irq_exit_rcu+0x97/0xc0 [ 112.983887][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 112.984074][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 112.984259][ C1] default_idle+0xf/0x20 [ 112.984490][ C1] default_idle_call+0x6d/0xb0 [ 112.984643][ C1] cpuidle_idle_call+0x1f4/0x280 [ 112.984795][ C1] do_idle+0xf9/0x160 [ 112.984908][ C1] cpu_startup_entry+0x54/0x60 [ 112.985139][ C1] start_secondary+0x21c/0x2b0 [ 112.985290][ C1] common_startup_64+0x12c/0x138 [ 112.985438][ C1] [ 112.985515][ C1] [ 112.985515][ C1] stack backtrace: [ 112.985702][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 112.986016][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 112.986353][ C1] Call Trace: [ 112.986468][ C1] [ 112.986630][ C1] dump_stack_lvl+0x82/0xd0 [ 112.986785][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 112.986974][ C1] ? common_startup_64+0x12c/0x138 [ 112.987127][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 112.987402][ C1] ? __pfx_usage_skip+0x10/0x10 [ 112.987553][ C1] ? __pfx_usage_match+0x10/0x10 [ 112.987705][ C1] ? arch_stack_walk+0x8c/0xf0 [ 112.987858][ C1] mark_lock_irq+0x4cd/0xa10 [ 112.988088][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 112.988240][ C1] ? stack_trace_save+0x94/0xd0 [ 112.988394][ C1] ? add_chain_cache+0x248/0x8b0 [ 112.988549][ C1] ? save_trace+0x8f/0x5b0 [ 112.988782][ C1] mark_lock+0x28d/0x3e0 [ 112.988906][ C1] mark_usage+0xd9/0x2a0 [ 112.989020][ C1] __lock_acquire+0x797/0x1570 [ 112.989171][ C1] ? __lock_acquire+0xaf0/0x1570 [ 112.989321][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 112.989663][ C1] lock_acquire.part.0+0xeb/0x330 [ 112.989813][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 112.990039][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 112.990190][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 112.990425][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 112.990650][ C1] ? lock_acquire+0x32/0xc0 [ 112.990800][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 112.991103][ C1] _raw_spin_lock+0x30/0x40 [ 112.991252][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 112.991487][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 112.991719][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 112.992076][ C1] call_timer_fn+0x13b/0x230 [ 112.992214][ C1] ? call_timer_fn+0xe8/0x230 [ 112.992352][ C1] ? call_timer_fn+0xe8/0x230 [ 112.992494][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 112.992713][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 112.992851][ C1] __run_timers+0x545/0x810 [ 112.992987][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 112.993231][ C1] ? __pfx___run_timers+0x10/0x10 [ 112.993448][ C1] ? __lock_release+0x103/0x460 [ 112.993585][ C1] ? do_raw_spin_lock+0x131/0x270 [ 112.993724][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 112.993863][ C1] ? lock_acquire+0x32/0xc0 [ 112.994091][ C1] ? timer_expire_remote+0x93/0xe0 [ 112.994234][ C1] timer_expire_remote+0x9b/0xe0 [ 112.994369][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 112.994514][ C1] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 112.994853][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 112.994991][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 112.995128][ C1] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 112.995267][ C1] __do_softirq+0x1f8/0x5df [ 112.995498][ C1] irq_exit_rcu+0x97/0xc0 [ 112.995613][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 112.995765][ C1] [ 112.995854][ C1] [ 112.995924][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 112.996177][ C1] RIP: 0010:default_idle+0xf/0x20 [ 112.996321][ 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 [ 112.996898][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000246 [ 112.997076][ C1] RAX: 000000000015172b RBX: 1ffff92000029fc1 RCX: ffffffff88d0e9d5 [ 112.997279][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff866aa4a4 [ 112.997567][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f1709c [ 112.997769][ C1] R10: ffff88802f8b84e3 R11: ffff88802f8ad9b0 R12: 0000000000000000 [ 112.997972][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 112.998266][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 112.998401][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 112.998542][ C1] default_idle_call+0x6d/0xb0 [ 112.998679][ C1] cpuidle_idle_call+0x1f4/0x280 [ 112.998897][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 112.999033][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 112.999171][ C1] do_idle+0xf9/0x160 [ 112.999279][ C1] cpu_startup_entry+0x54/0x60 [ 112.999415][ C1] start_secondary+0x21c/0x2b0 [ 112.999633][ C1] ? __pfx_start_secondary+0x10/0x10 [ 112.999770][ C1] common_startup_64+0x12c/0x138 [ 112.999912][ C1] [ 133.648405][ T753] veth0: left promiscuous mode [ 133.976194][ T757] veth3: entered promiscuous mode [ 135.860681][ T766] veth3: left promiscuous mode [ 136.073066][ T768] veth3: entered promiscuous mode [ 137.931337][ T777] veth3: left promiscuous mode [ 138.135544][ T780] veth3: entered promiscuous mode [ 139.988953][ T789] veth3: left promiscuous mode [ 140.239292][ T791] veth3: entered promiscuous mode [ 142.066456][ T800] veth3: left promiscuous mode [ 142.177287][ T802] br0: port 2(veth2) entered disabled state [ 142.296470][ T803] br0: port 1(veth1) entered disabled state [ 142.391204][ T804] veth2: left allmulticast mode [ 142.391407][ T804] veth2: left promiscuous mode [ 142.391669][ T804] br0: port 2(veth2) entered disabled state [ 142.392655][ T804] veth1: left allmulticast mode [ 142.392817][ T804] veth1: left promiscuous mode [ 142.393068][ T804] br0: port 1(veth1) entered disabled state