[ 37.255306][ T311] veth2: entered promiscuous mode [ 57.051513][ T338] 8021q: 802.1Q VLAN Support v1.8 [ 437.182206][ T311] veth2: left promiscuous mode [ 480.908689][ T1482] br0: port 1(veth1) entered blocking state [ 480.909025][ T1482] br0: port 1(veth1) entered disabled state [ 480.909297][ T1482] veth1: entered allmulticast mode [ 480.912525][ T1482] veth1: entered promiscuous mode [ 480.914076][ T1482] br0: port 1(veth1) entered blocking state [ 480.914466][ T1482] br0: port 1(veth1) entered forwarding state [ 481.059726][ T1483] br1: port 1(veth3) entered blocking state [ 481.060112][ T1483] br1: port 1(veth3) entered disabled state [ 481.060478][ T1483] veth3: entered allmulticast mode [ 481.063398][ T1483] veth3: entered promiscuous mode [ 481.064934][ T1483] br1: port 1(veth3) entered blocking state [ 481.065296][ T1483] br1: port 1(veth3) entered forwarding state [ 482.036408][ T1496] veth2: entered promiscuous mode [ 496.425131][ C0] [ 496.425330][ C0] ======================================================== [ 496.425702][ C0] WARNING: possible irq lock inversion dependency detected [ 496.426071][ C0] 6.9.0-rc1-virtme #1 Not tainted [ 496.426322][ C0] -------------------------------------------------------- [ 496.426700][ C0] swapper/0/0 just changed the state of lock: [ 496.427020][ C0] ffff88800619ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 496.427646][ C0] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 496.428008][ C0] (&p->alloc_lock){+.+.}-{2:2} [ 496.428015][ C0] [ 496.428015][ C0] [ 496.428015][ C0] and interrupts could create inverse lock ordering between them. [ 496.428015][ C0] [ 496.428949][ C0] [ 496.428949][ C0] other info that might help us debug this: [ 496.429335][ C0] Chain exists of: [ 496.429335][ C0] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 496.429335][ C0] [ 496.429947][ C0] Possible interrupt unsafe locking scenario: [ 496.429947][ C0] [ 496.430326][ C0] CPU0 CPU1 [ 496.430586][ C0] ---- ---- [ 496.430856][ C0] lock(&p->alloc_lock); [ 496.431052][ C0] local_irq_disable(); [ 496.431368][ C0] lock(&br->lock); [ 496.431693][ C0] lock(lweventlist_lock); [ 496.432056][ C0] [ 496.432253][ C0] lock(&br->lock); [ 496.432453][ C0] [ 496.432453][ C0] *** DEADLOCK *** [ 496.432453][ C0] [ 496.432861][ C0] 1 lock held by swapper/0/0: [ 496.433131][ C0] #0: ffffc90000007d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 496.433659][ C0] [ 496.433659][ C0] the shortest dependencies between 2nd lock and 1st lock: [ 496.434161][ C0] -> (&p->alloc_lock){+.+.}-{2:2} { [ 496.434427][ C0] HARDIRQ-ON-W at: [ 496.434629][ C0] __lock_acquire+0x797/0x1570 [ 496.434967][ C0] lock_acquire.part.0+0xeb/0x330 [ 496.435292][ C0] _raw_spin_lock+0x30/0x40 [ 496.435615][ C0] set_mems_allowed+0x1d/0x210 [ 496.435940][ C0] kernel_init_freeable+0x72/0x310 [ 496.436261][ C0] kernel_init+0x20/0x200 [ 496.436583][ C0] ret_from_fork+0x31/0x70 [ 496.436897][ C0] ret_from_fork_asm+0x1a/0x30 [ 496.437225][ C0] SOFTIRQ-ON-W at: [ 496.437436][ C0] __lock_acquire+0x797/0x1570 [ 496.437745][ C0] lock_acquire.part.0+0xeb/0x330 [ 496.438049][ C0] _raw_spin_lock+0x30/0x40 [ 496.438363][ C0] set_mems_allowed+0x1d/0x210 [ 496.438678][ C0] kernel_init_freeable+0x72/0x310 [ 496.439006][ C0] kernel_init+0x20/0x200 [ 496.439330][ C0] ret_from_fork+0x31/0x70 [ 496.439641][ C0] ret_from_fork_asm+0x1a/0x30 [ 496.439948][ C0] INITIAL USE at: [ 496.440139][ C0] __lock_acquire+0x797/0x1570 [ 496.440456][ C0] lock_acquire.part.0+0xeb/0x330 [ 496.440786][ C0] _raw_spin_lock+0x30/0x40 [ 496.441117][ C0] set_mems_allowed+0x1d/0x210 [ 496.441422][ C0] kernel_init_freeable+0x72/0x310 [ 496.441728][ C0] kernel_init+0x20/0x200 [ 496.442064][ C0] ret_from_fork+0x31/0x70 [ 496.442377][ C0] ret_from_fork_asm+0x1a/0x30 [ 496.442699][ C0] } [ 496.442855][ C0] ... key at: [] __key.387+0x0/0x40 [ 496.443249][ C0] ... acquired at: [ 496.443442][ C0] __lock_acquire+0xaf0/0x1570 [ 496.443700][ C0] lock_acquire.part.0+0xeb/0x330 [ 496.443946][ C0] _raw_spin_lock+0x30/0x40 [ 496.444193][ C0] __get_task_comm+0x27/0x70 [ 496.444444][ C0] ref_tracker_alloc+0x2ee/0x490 [ 496.444722][ C0] linkwatch_fire_event+0x196/0x200 [ 496.444980][ C0] veth_newlink+0x367/0x830 [veth] [ 496.445251][ C0] rtnl_newlink_create+0x341/0x850 [ 496.445506][ C0] __rtnl_newlink+0xac9/0xd80 [ 496.445763][ C0] rtnl_newlink+0x63/0xa0 [ 496.446016][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 496.446270][ C0] netlink_rcv_skb+0x130/0x360 [ 496.446536][ C0] netlink_unicast+0x449/0x710 [ 496.446805][ C0] netlink_sendmsg+0x723/0xbe0 [ 496.447065][ C0] ____sys_sendmsg+0x7b2/0xa10 [ 496.447309][ C0] ___sys_sendmsg+0xee/0x170 [ 496.447570][ C0] __sys_sendmsg+0xcd/0x170 [ 496.447814][ C0] do_syscall_64+0xc6/0x1e0 [ 496.448059][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 496.448396][ C0] [ 496.448519][ C0] -> (lweventlist_lock){....}-{2:2} { [ 496.448779][ C0] INITIAL USE at: [ 496.448961][ C0] __lock_acquire+0x797/0x1570 [ 496.449270][ C0] lock_acquire.part.0+0xeb/0x330 [ 496.449574][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 496.449880][ C0] linkwatch_sync_dev+0x29/0x1f0 [ 496.450187][ C0] rtnl_getlink+0x4c9/0x970 [ 496.450499][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 496.450802][ C0] netlink_rcv_skb+0x130/0x360 [ 496.451103][ C0] netlink_unicast+0x449/0x710 [ 496.451424][ C0] netlink_sendmsg+0x723/0xbe0 [ 496.451735][ C0] __sys_sendto+0x37d/0x410 [ 496.452070][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 496.452395][ C0] do_syscall_64+0xc6/0x1e0 [ 496.452699][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 496.453063][ C0] } [ 496.453188][ C0] ... key at: [] lweventlist_lock+0x18/0x60 [ 496.453550][ C0] ... acquired at: [ 496.453734][ C0] __lock_acquire+0xaf0/0x1570 [ 496.453974][ C0] lock_acquire.part.0+0xeb/0x330 [ 496.454221][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 496.454464][ C0] linkwatch_fire_event+0x74/0x200 [ 496.454707][ C0] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 496.455082][ C0] br_set_mac_address+0x1f3/0x260 [bridge] [ 496.455451][ C0] dev_set_mac_address+0x28a/0x410 [ 496.455697][ C0] dev_set_mac_address_user+0x31/0x50 [ 496.455940][ C0] do_setlink+0x17b4/0x21e0 [ 496.456181][ C0] rtnl_setlink+0x1f7/0x310 [ 496.456423][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 496.456669][ C0] netlink_rcv_skb+0x130/0x360 [ 496.456910][ C0] netlink_unicast+0x449/0x710 [ 496.457153][ C0] netlink_sendmsg+0x723/0xbe0 [ 496.457394][ C0] __sys_sendto+0x37d/0x410 [ 496.457637][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 496.457879][ C0] do_syscall_64+0xc6/0x1e0 [ 496.458124][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 496.458432][ C0] [ 496.458554][ C0] -> (&br->lock){+.-.}-{2:2} { [ 496.458808][ C0] HARDIRQ-ON-W at: [ 496.459008][ C0] __lock_acquire+0x797/0x1570 [ 496.459317][ C0] lock_acquire.part.0+0xeb/0x330 [ 496.459647][ C0] _raw_spin_lock_bh+0x38/0x50 [ 496.459953][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 496.460412][ C0] dev_set_mac_address+0x28a/0x410 [ 496.460727][ C0] dev_set_mac_address_user+0x31/0x50 [ 496.461035][ C0] do_setlink+0x17b4/0x21e0 [ 496.461342][ C0] rtnl_setlink+0x1f7/0x310 [ 496.461648][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 496.462005][ C0] netlink_rcv_skb+0x130/0x360 [ 496.462197][ C0] netlink_unicast+0x449/0x710 [ 496.462407][ C0] netlink_sendmsg+0x723/0xbe0 [ 496.462595][ C0] __sys_sendto+0x37d/0x410 [ 496.462814][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 496.463005][ C0] do_syscall_64+0xc6/0x1e0 [ 496.463193][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 496.463420][ C0] IN-SOFTIRQ-W at: [ 496.463535][ C0] __lock_acquire+0x797/0x1570 [ 496.463729][ C0] lock_acquire.part.0+0xeb/0x330 [ 496.463915][ C0] _raw_spin_lock+0x30/0x40 [ 496.464103][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 496.464365][ C0] call_timer_fn+0x13b/0x230 [ 496.464557][ C0] __run_timers+0x545/0x810 [ 496.464746][ C0] run_timer_softirq+0xe8/0x1b0 [ 496.464934][ C0] __do_softirq+0x1f8/0x5df [ 496.465123][ C0] irq_exit_rcu+0x97/0xc0 [ 496.465310][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 496.465542][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 496.465762][ C0] default_idle+0xf/0x20 [ 496.465950][ C0] default_idle_call+0x6d/0xb0 [ 496.466142][ C0] cpuidle_idle_call+0x1f4/0x280 [ 496.466332][ C0] do_idle+0xf9/0x160 [ 496.466483][ C0] cpu_startup_entry+0x54/0x60 [ 496.466678][ C0] rest_init+0x14f/0x260 [ 496.466868][ C0] start_kernel+0x318/0x3d0 [ 496.467061][ C0] x86_64_start_reservations+0x18/0x30 [ 496.467254][ C0] x86_64_start_kernel+0xba/0x110 [ 496.467450][ C0] common_startup_64+0x12c/0x138 [ 496.467648][ C0] INITIAL USE at: [ 496.467765][ C0] __lock_acquire+0x797/0x1570 [ 496.467956][ C0] lock_acquire.part.0+0xeb/0x330 [ 496.468151][ C0] _raw_spin_lock_bh+0x38/0x50 [ 496.468345][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 496.468612][ C0] dev_set_mac_address+0x28a/0x410 [ 496.468813][ C0] dev_set_mac_address_user+0x31/0x50 [ 496.469003][ C0] do_setlink+0x17b4/0x21e0 [ 496.469198][ C0] rtnl_setlink+0x1f7/0x310 [ 496.469392][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 496.469586][ C0] netlink_rcv_skb+0x130/0x360 [ 496.469784][ C0] netlink_unicast+0x449/0x710 [ 496.469974][ C0] netlink_sendmsg+0x723/0xbe0 [ 496.470192][ C0] __sys_sendto+0x37d/0x410 [ 496.470411][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 496.470611][ C0] do_syscall_64+0xc6/0x1e0 [ 496.470803][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 496.471031][ C0] } [ 496.471107][ C0] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 496.471417][ C0] ... acquired at: [ 496.471528][ C0] mark_lock+0x28d/0x3e0 [ 496.471678][ C0] mark_usage+0xd9/0x2a0 [ 496.471864][ C0] __lock_acquire+0x797/0x1570 [ 496.472015][ C0] lock_acquire.part.0+0xeb/0x330 [ 496.472259][ C0] _raw_spin_lock+0x30/0x40 [ 496.472406][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 496.472636][ C0] call_timer_fn+0x13b/0x230 [ 496.472797][ C0] __run_timers+0x545/0x810 [ 496.473050][ C0] run_timer_softirq+0xe8/0x1b0 [ 496.473203][ C0] __do_softirq+0x1f8/0x5df [ 496.473356][ C0] irq_exit_rcu+0x97/0xc0 [ 496.473502][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 496.473789][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 496.473993][ C0] default_idle+0xf/0x20 [ 496.474144][ C0] default_idle_call+0x6d/0xb0 [ 496.474302][ C0] cpuidle_idle_call+0x1f4/0x280 [ 496.474635][ C0] do_idle+0xf9/0x160 [ 496.474746][ C0] cpu_startup_entry+0x54/0x60 [ 496.474904][ C0] rest_init+0x14f/0x260 [ 496.475054][ C0] start_kernel+0x318/0x3d0 [ 496.475301][ C0] x86_64_start_reservations+0x18/0x30 [ 496.475454][ C0] x86_64_start_kernel+0xba/0x110 [ 496.475599][ C0] common_startup_64+0x12c/0x138 [ 496.475753][ C0] [ 496.475841][ C0] [ 496.475841][ C0] stack backtrace: [ 496.476141][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc1-virtme #1 [ 496.476421][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 496.476749][ C0] Call Trace: [ 496.476887][ C0] [ 496.476976][ C0] dump_stack_lvl+0x82/0xd0 [ 496.477149][ C0] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 496.477336][ C0] ? common_startup_64+0x12c/0x138 [ 496.477574][ C0] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 496.477756][ C0] ? __pfx_usage_skip+0x10/0x10 [ 496.477936][ C0] ? __pfx_usage_match+0x10/0x10 [ 496.478087][ C0] ? arch_stack_walk+0x8c/0xf0 [ 496.478332][ C0] mark_lock_irq+0x4cd/0xa10 [ 496.478491][ C0] ? __pfx_mark_lock_irq+0x10/0x10 [ 496.478641][ C0] ? stack_trace_save+0x94/0xd0 [ 496.478807][ C0] ? save_trace+0x8f/0x5b0 [ 496.479056][ C0] mark_lock+0x28d/0x3e0 [ 496.479169][ C0] mark_usage+0xd9/0x2a0 [ 496.479288][ C0] __lock_acquire+0x797/0x1570 [ 496.479446][ C0] ? __lock_acquire+0xaf0/0x1570 [ 496.479595][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 496.479860][ C0] lock_acquire.part.0+0xeb/0x330 [ 496.480018][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 496.480249][ C0] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 496.480506][ C0] ? trace_lock_acquire+0x135/0x1c0 [ 496.480660][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 496.480901][ C0] ? lock_acquire+0x32/0xc0 [ 496.481050][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 496.481373][ C0] _raw_spin_lock+0x30/0x40 [ 496.481533][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 496.481756][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 496.482051][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 496.482421][ C0] call_timer_fn+0x13b/0x230 [ 496.482572][ C0] ? call_timer_fn+0xe8/0x230 [ 496.482723][ C0] ? call_timer_fn+0xe8/0x230 [ 496.482883][ C0] ? __pfx_call_timer_fn+0x10/0x10 [ 496.483153][ C0] ? mark_lock+0x38/0x3e0 [ 496.483270][ C0] __run_timers+0x545/0x810 [ 496.483416][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 496.483686][ C0] ? __pfx___run_timers+0x10/0x10 [ 496.483852][ C0] ? do_raw_spin_lock+0x131/0x270 [ 496.484007][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 496.484155][ C0] ? lock_acquire+0x32/0xc0 [ 496.484313][ C0] ? run_timer_softirq+0xe0/0x1b0 [ 496.484729][ C0] run_timer_softirq+0xe8/0x1b0 [ 496.484991][ C0] __do_softirq+0x1f8/0x5df [ 496.485235][ C0] irq_exit_rcu+0x97/0xc0 [ 496.485415][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 496.485808][ C0] [ 496.485932][ C0] [ 496.486054][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 496.486356][ C0] RIP: 0010:default_idle+0xf/0x20 [ 496.486611][ 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 [ 496.487658][ C0] RSP: 0018:ffffffff88807e00 EFLAGS: 00000246 [ 496.487969][ C0] RAX: 0000000000306f1b RBX: 1ffffffff1100fc2 RCX: ffffffff8790e9d5 [ 496.488515][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff852aa4a4 [ 496.488884][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0709c [ 496.489267][ C0] R10: ffff8880360384e3 R11: ffff88803602d9b0 R12: 0000000000000000 [ 496.489813][ C0] R13: ffffffff8881d000 R14: dffffc0000000000 R15: 0000000000014770 [ 496.490183][ C0] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 496.490436][ C0] ? cpuidle_idle_call+0x1f4/0x280 [ 496.490846][ C0] default_idle_call+0x6d/0xb0 [ 496.491080][ C0] cpuidle_idle_call+0x1f4/0x280 [ 496.491319][ C0] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 496.491559][ C0] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 496.491983][ C0] do_idle+0xf9/0x160 [ 496.492171][ C0] cpu_startup_entry+0x54/0x60 [ 496.492407][ C0] rest_init+0x14f/0x260 [ 496.492595][ C0] start_kernel+0x318/0x3d0 [ 496.492852][ C0] x86_64_start_reservations+0x18/0x30 [ 496.493274][ C0] x86_64_start_kernel+0xba/0x110 [ 496.493528][ C0] common_startup_64+0x12c/0x138 [ 496.493785][ C0] WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr [ 797.496504][ T1496] veth2: left promiscuous mode WAIT TIMEOUT stderr