[ 38.856281][ T310] veth2: entered promiscuous mode [ 58.589842][ T337] 8021q: 802.1Q VLAN Support v1.8 [ 59.414243][ T348] ip (348) used greatest stack depth: 23344 bytes left [ 440.773232][ T310] veth2: left promiscuous mode [ 482.887447][ T1479] br0: port 1(veth1) entered blocking state [ 482.887735][ T1479] br0: port 1(veth1) entered disabled state [ 482.888051][ T1479] veth1: entered allmulticast mode [ 482.890114][ T1479] veth1: entered promiscuous mode [ 482.891456][ T1479] br0: port 1(veth1) entered blocking state [ 482.891808][ T1479] br0: port 1(veth1) entered forwarding state [ 483.004226][ T1480] br1: port 1(veth3) entered blocking state [ 483.004529][ T1480] br1: port 1(veth3) entered disabled state [ 483.004798][ T1480] veth3: entered allmulticast mode [ 483.006838][ T1480] veth3: entered promiscuous mode [ 483.008015][ T1480] br1: port 1(veth3) entered blocking state [ 483.008559][ T1480] br1: port 1(veth3) entered forwarding state [ 483.842770][ T1493] veth2: entered promiscuous mode [ 498.327128][ C1] [ 498.327299][ C1] ======================================================== [ 498.327517][ C1] WARNING: possible irq lock inversion dependency detected [ 498.327725][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 498.327876][ C1] -------------------------------------------------------- [ 498.328085][ C1] swapper/1/0 just changed the state of lock: [ 498.328260][ C1] ffff888009852c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 498.328605][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 498.328816][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 498.328820][ C1] [ 498.328820][ C1] [ 498.328820][ C1] and interrupts could create inverse lock ordering between them. [ 498.328820][ C1] [ 498.329398][ C1] [ 498.329398][ C1] other info that might help us debug this: [ 498.329608][ C1] Chain exists of: [ 498.329608][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 498.329608][ C1] [ 498.329937][ C1] Possible interrupt unsafe locking scenario: [ 498.329937][ C1] [ 498.330149][ C1] CPU0 CPU1 [ 498.330292][ C1] ---- ---- [ 498.330431][ C1] lock(&p->alloc_lock); [ 498.330542][ C1] local_irq_disable(); [ 498.330716][ C1] lock(&br->lock); [ 498.330891][ C1] lock(lweventlist_lock); [ 498.331066][ C1] [ 498.331173][ C1] lock(&br->lock); [ 498.331288][ C1] [ 498.331288][ C1] *** DEADLOCK *** [ 498.331288][ C1] [ 498.331508][ C1] 1 lock held by swapper/1/0: [ 498.331652][ C1] #0: ffffc900001d8b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 498.331946][ C1] [ 498.331946][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 498.332199][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 498.332362][ C1] HARDIRQ-ON-W at: [ 498.332471][ C1] __lock_acquire+0x797/0x1570 [ 498.332661][ C1] lock_acquire.part.0+0xeb/0x330 [ 498.332844][ C1] _raw_spin_lock+0x30/0x40 [ 498.333030][ C1] set_mems_allowed+0x1d/0x210 [ 498.333208][ C1] kernel_init_freeable+0x72/0x310 [ 498.333394][ C1] kernel_init+0x20/0x200 [ 498.333573][ C1] ret_from_fork+0x31/0x70 [ 498.333753][ C1] ret_from_fork_asm+0x1a/0x30 [ 498.333929][ C1] SOFTIRQ-ON-W at: [ 498.334037][ C1] __lock_acquire+0x797/0x1570 [ 498.334212][ C1] lock_acquire.part.0+0xeb/0x330 [ 498.334392][ C1] _raw_spin_lock+0x30/0x40 [ 498.334574][ C1] set_mems_allowed+0x1d/0x210 [ 498.334800][ C1] kernel_init_freeable+0x72/0x310 [ 498.335041][ C1] kernel_init+0x20/0x200 [ 498.335222][ C1] ret_from_fork+0x31/0x70 [ 498.335401][ C1] ret_from_fork_asm+0x1a/0x30 [ 498.335578][ C1] INITIAL USE at: [ 498.335689][ C1] __lock_acquire+0x797/0x1570 [ 498.335871][ C1] lock_acquire.part.0+0xeb/0x330 [ 498.336052][ C1] _raw_spin_lock+0x30/0x40 [ 498.336234][ C1] set_mems_allowed+0x1d/0x210 [ 498.336409][ C1] kernel_init_freeable+0x72/0x310 [ 498.336584][ C1] kernel_init+0x20/0x200 [ 498.336764][ C1] ret_from_fork+0x31/0x70 [ 498.336946][ C1] ret_from_fork_asm+0x1a/0x30 [ 498.337121][ C1] } [ 498.337202][ C1] ... key at: [] __key.387+0x0/0x40 [ 498.337423][ C1] ... acquired at: [ 498.337530][ C1] __lock_acquire+0xaf0/0x1570 [ 498.337674][ C1] lock_acquire.part.0+0xeb/0x330 [ 498.337831][ C1] _raw_spin_lock+0x30/0x40 [ 498.337972][ C1] __get_task_comm+0x27/0x70 [ 498.338121][ C1] ref_tracker_alloc+0x2ee/0x490 [ 498.338270][ C1] linkwatch_fire_event+0x196/0x200 [ 498.338424][ C1] veth_newlink+0x367/0x830 [veth] [ 498.338572][ C1] rtnl_newlink_create+0x341/0x850 [ 498.338711][ C1] __rtnl_newlink+0xac9/0xd80 [ 498.338853][ C1] rtnl_newlink+0x63/0xa0 [ 498.339011][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 498.339152][ C1] netlink_rcv_skb+0x130/0x360 [ 498.339300][ C1] netlink_unicast+0x449/0x710 [ 498.339443][ C1] netlink_sendmsg+0x723/0xbe0 [ 498.339584][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 498.339732][ C1] ___sys_sendmsg+0xee/0x170 [ 498.339874][ C1] __sys_sendmsg+0xcd/0x170 [ 498.340016][ C1] do_syscall_64+0xc6/0x1e0 [ 498.340161][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 498.340348][ C1] [ 498.340422][ C1] -> (lweventlist_lock){....}-{2:2} { [ 498.340570][ C1] INITIAL USE at: [ 498.340680][ C1] __lock_acquire+0x797/0x1570 [ 498.340857][ C1] lock_acquire.part.0+0xeb/0x330 [ 498.341034][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 498.341217][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 498.341397][ C1] rtnl_getlink+0x4c9/0x970 [ 498.341574][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 498.341747][ C1] netlink_rcv_skb+0x130/0x360 [ 498.341921][ C1] netlink_unicast+0x449/0x710 [ 498.342097][ C1] netlink_sendmsg+0x723/0xbe0 [ 498.342275][ C1] __sys_sendto+0x37d/0x410 [ 498.342458][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 498.342641][ C1] do_syscall_64+0xc6/0x1e0 [ 498.342821][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 498.343035][ C1] } [ 498.343106][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 498.343331][ C1] ... acquired at: [ 498.343434][ C1] __lock_acquire+0xaf0/0x1570 [ 498.343586][ C1] lock_acquire.part.0+0xeb/0x330 [ 498.343725][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 498.343864][ C1] linkwatch_fire_event+0x74/0x200 [ 498.344010][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 498.344246][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 498.344453][ C1] dev_set_mac_address+0x28a/0x410 [ 498.344595][ C1] dev_set_mac_address_user+0x31/0x50 [ 498.344743][ C1] do_setlink+0x17b4/0x21e0 [ 498.344896][ C1] rtnl_setlink+0x1f7/0x310 [ 498.345037][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 498.345177][ C1] netlink_rcv_skb+0x130/0x360 [ 498.345321][ C1] netlink_unicast+0x449/0x710 [ 498.345463][ C1] netlink_sendmsg+0x723/0xbe0 [ 498.345602][ C1] __sys_sendto+0x37d/0x410 [ 498.345743][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 498.345885][ C1] do_syscall_64+0xc6/0x1e0 [ 498.346037][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 498.346214][ C1] [ 498.346284][ C1] -> (&br->lock){+.-.}-{2:2} { [ 498.346429][ C1] HARDIRQ-ON-W at: [ 498.346536][ C1] __lock_acquire+0x797/0x1570 [ 498.346713][ C1] lock_acquire.part.0+0xeb/0x330 [ 498.346893][ C1] _raw_spin_lock_bh+0x38/0x50 [ 498.347082][ C1] br_set_mac_address+0xd2/0x260 [bridge] [ 498.347334][ C1] dev_set_mac_address+0x28a/0x410 [ 498.347511][ C1] dev_set_mac_address_user+0x31/0x50 [ 498.347688][ C1] do_setlink+0x17b4/0x21e0 [ 498.347877][ C1] rtnl_setlink+0x1f7/0x310 [ 498.348059][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 498.348234][ C1] netlink_rcv_skb+0x130/0x360 [ 498.348419][ C1] netlink_unicast+0x449/0x710 [ 498.348595][ C1] netlink_sendmsg+0x723/0xbe0 [ 498.348771][ C1] __sys_sendto+0x37d/0x410 [ 498.348961][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 498.349144][ C1] do_syscall_64+0xc6/0x1e0 [ 498.349320][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 498.349545][ C1] IN-SOFTIRQ-W at: [ 498.349653][ C1] __lock_acquire+0x797/0x1570 [ 498.349838][ C1] lock_acquire.part.0+0xeb/0x330 [ 498.350019][ C1] _raw_spin_lock+0x30/0x40 [ 498.350201][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 498.350450][ C1] call_timer_fn+0x13b/0x230 [ 498.350625][ C1] __run_timers+0x545/0x810 [ 498.350804][ C1] timer_expire_remote+0x9b/0xe0 [ 498.350988][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 498.351166][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 498.351341][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 498.351523][ C1] __do_softirq+0x1f8/0x5df [ 498.351699][ C1] irq_exit_rcu+0x97/0xc0 [ 498.351881][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 498.352104][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 498.352324][ C1] default_idle+0xf/0x20 [ 498.352499][ C1] default_idle_call+0x6d/0xb0 [ 498.352678][ C1] cpuidle_idle_call+0x1f4/0x280 [ 498.352856][ C1] do_idle+0xf9/0x160 [ 498.353002][ C1] cpu_startup_entry+0x54/0x60 [ 498.353180][ C1] start_secondary+0x21c/0x2b0 [ 498.353365][ C1] common_startup_64+0x12c/0x138 [ 498.353541][ C1] INITIAL USE at: [ 498.353654][ C1] __lock_acquire+0x797/0x1570 [ 498.353829][ C1] lock_acquire.part.0+0xeb/0x330 [ 498.354094][ C1] _raw_spin_lock_bh+0x38/0x50 [ 498.354284][ C1] br_set_mac_address+0xd2/0x260 [bridge] [ 498.354539][ C1] dev_set_mac_address+0x28a/0x410 [ 498.354813][ C1] dev_set_mac_address_user+0x31/0x50 [ 498.354991][ C1] do_setlink+0x17b4/0x21e0 [ 498.355172][ C1] rtnl_setlink+0x1f7/0x310 [ 498.355347][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 498.355618][ C1] netlink_rcv_skb+0x130/0x360 [ 498.355797][ C1] netlink_unicast+0x449/0x710 [ 498.355973][ C1] netlink_sendmsg+0x723/0xbe0 [ 498.356315][ C1] __sys_sendto+0x37d/0x410 [ 498.356492][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 498.356666][ C1] do_syscall_64+0xc6/0x1e0 [ 498.356926][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 498.357149][ C1] } [ 498.357221][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 498.357506][ C1] ... acquired at: [ 498.357692][ C1] mark_lock+0x28d/0x3e0 [ 498.357836][ C1] mark_usage+0xd9/0x2a0 [ 498.357978][ C1] __lock_acquire+0x797/0x1570 [ 498.358122][ C1] lock_acquire.part.0+0xeb/0x330 [ 498.358343][ C1] _raw_spin_lock+0x30/0x40 [ 498.358487][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 498.358699][ C1] call_timer_fn+0x13b/0x230 [ 498.358851][ C1] __run_timers+0x545/0x810 [ 498.359083][ C1] timer_expire_remote+0x9b/0xe0 [ 498.359224][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 498.359363][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 498.359505][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 498.359652][ C1] __do_softirq+0x1f8/0x5df [ 498.359874][ C1] irq_exit_rcu+0x97/0xc0 [ 498.360019][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 498.360200][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 498.360456][ C1] default_idle+0xf/0x20 [ 498.360610][ C1] default_idle_call+0x6d/0xb0 [ 498.360757][ C1] cpuidle_idle_call+0x1f4/0x280 [ 498.360900][ C1] do_idle+0xf9/0x160 [ 498.361013][ C1] cpu_startup_entry+0x54/0x60 [ 498.361243][ C1] start_secondary+0x21c/0x2b0 [ 498.361388][ C1] common_startup_64+0x12c/0x138 [ 498.361539][ C1] [ 498.361616][ C1] [ 498.361616][ C1] stack backtrace: [ 498.361870][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 498.362083][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 498.362406][ C1] Call Trace: [ 498.362602][ C1] [ 498.362678][ C1] dump_stack_lvl+0x82/0xd0 [ 498.362832][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 498.363006][ C1] ? common_startup_64+0x12c/0x138 [ 498.363150][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 498.363403][ C1] ? __pfx_usage_skip+0x10/0x10 [ 498.363543][ C1] ? __pfx_usage_match+0x10/0x10 [ 498.363687][ C1] ? arch_stack_walk+0x8c/0xf0 [ 498.363835][ C1] mark_lock_irq+0x4cd/0xa10 [ 498.364070][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 498.364218][ C1] ? stack_trace_save+0x94/0xd0 [ 498.364363][ C1] ? add_chain_cache+0x248/0x8b0 [ 498.364504][ C1] ? save_trace+0x8f/0x5b0 [ 498.364731][ C1] mark_lock+0x28d/0x3e0 [ 498.364839][ C1] mark_usage+0xd9/0x2a0 [ 498.364948][ C1] __lock_acquire+0x797/0x1570 [ 498.365094][ C1] ? __lock_acquire+0xaf0/0x1570 [ 498.365236][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 498.365572][ C1] lock_acquire.part.0+0xeb/0x330 [ 498.365713][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 498.365924][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 498.366153][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 498.366293][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 498.366512][ C1] ? lock_acquire+0x32/0xc0 [ 498.366651][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 498.366943][ C1] _raw_spin_lock+0x30/0x40 [ 498.367090][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 498.367301][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 498.367512][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 498.367913][ C1] call_timer_fn+0x13b/0x230 [ 498.368060][ C1] ? call_timer_fn+0xe8/0x230 [ 498.368199][ C1] ? call_timer_fn+0xe8/0x230 [ 498.368420][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 498.368559][ C1] ? mark_lock+0x38/0x3e0 [ 498.368671][ C1] __run_timers+0x545/0x810 [ 498.368811][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 498.369166][ C1] ? __pfx___run_timers+0x10/0x10 [ 498.369307][ C1] ? __lock_release+0x103/0x460 [ 498.369461][ C1] ? do_raw_spin_lock+0x131/0x270 [ 498.369603][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 498.369743][ C1] ? lock_acquire+0x32/0xc0 [ 498.369981][ C1] ? timer_expire_remote+0x93/0xe0 [ 498.370136][ C1] timer_expire_remote+0x9b/0xe0 [ 498.370277][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 498.370418][ C1] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 498.370685][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 498.370831][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 498.370970][ C1] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 498.371111][ C1] __do_softirq+0x1f8/0x5df [ 498.371332][ C1] irq_exit_rcu+0x97/0xc0 [ 498.371437][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 498.371577][ C1] [ 498.371650][ C1] [ 498.371723][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 498.371984][ C1] RIP: 0010:default_idle+0xf/0x20 [ 498.372137][ 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 [ 498.372722][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000246 [ 498.372907][ C1] RAX: 0000000000362e21 RBX: 1ffff92000029fc1 RCX: ffffffffb510e9d5 [ 498.373117][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb2aaa4a4 [ 498.373421][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1709c [ 498.373635][ C1] R10: ffff8880360b84e3 R11: ffff8880360ad9b0 R12: 0000000000000000 [ 498.373845][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 498.374146][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 498.374288][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 498.374436][ C1] default_idle_call+0x6d/0xb0 [ 498.374592][ C1] cpuidle_idle_call+0x1f4/0x280 [ 498.374820][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 498.374961][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 498.375103][ C1] do_idle+0xf9/0x160 [ 498.375209][ C1] cpu_startup_entry+0x54/0x60 [ 498.375438][ C1] start_secondary+0x21c/0x2b0 [ 498.375582][ C1] ? __pfx_start_secondary+0x10/0x10 [ 498.375729][ C1] common_startup_64+0x12c/0x138 [ 498.375874][ C1] WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr [ 799.358201][ T1493] veth2: left promiscuous mode WAIT TIMEOUT stderr