[ 27.846591][ T283] ip (283) used greatest stack depth: 24144 bytes left [ 30.285679][ T303] br0: port 1(veth1) entered blocking state [ 30.286971][ T303] br0: port 1(veth1) entered disabled state [ 30.287763][ T303] veth1: entered allmulticast mode [ 30.289865][ T303] veth1: entered promiscuous mode [ 30.421040][ T305] br0: port 2(veth2) entered blocking state [ 30.421328][ T305] br0: port 2(veth2) entered disabled state [ 30.421583][ T305] veth2: entered allmulticast mode [ 30.423515][ T305] veth2: entered promiscuous mode [ 30.545779][ T306] br0: port 3(veth4) entered blocking state [ 30.546049][ T306] br0: port 3(veth4) entered disabled state [ 30.546295][ T306] veth4: entered allmulticast mode [ 30.548157][ T306] veth4: entered promiscuous mode [ 31.140591][ T7] br0: port 1(veth1) entered blocking state [ 31.141069][ T7] br0: port 1(veth1) entered forwarding state [ 31.265075][ T50] br0: port 2(veth2) entered blocking state [ 31.265441][ T50] br0: port 2(veth2) entered forwarding state [ 31.386519][ T50] br0: port 3(veth4) entered blocking state [ 31.386824][ T50] br0: port 3(veth4) entered forwarding state [ 46.417083][ C0] [ 46.417247][ C0] ======================================================== [ 46.417601][ C0] WARNING: possible irq lock inversion dependency detected [ 46.417970][ C0] 6.9.0-rc1-virtme #1 Not tainted [ 46.418218][ C0] -------------------------------------------------------- [ 46.418590][ C0] swapper/0/0 just changed the state of lock: [ 46.418893][ C0] ffff88800522ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.419515][ C0] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 46.419870][ C0] (&p->alloc_lock){+.+.}-{2:2} [ 46.419878][ C0] [ 46.419878][ C0] [ 46.419878][ C0] and interrupts could create inverse lock ordering between them. [ 46.419878][ C0] [ 46.420768][ C0] [ 46.420768][ C0] other info that might help us debug this: [ 46.421121][ C0] Chain exists of: [ 46.421121][ C0] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 46.421121][ C0] [ 46.421671][ C0] Possible interrupt unsafe locking scenario: [ 46.421671][ C0] [ 46.422046][ C0] CPU0 CPU1 [ 46.422298][ C0] ---- ---- [ 46.422541][ C0] lock(&p->alloc_lock); [ 46.422729][ C0] local_irq_disable(); [ 46.423031][ C0] lock(&br->lock); [ 46.423334][ C0] lock(lweventlist_lock); [ 46.423644][ C0] [ 46.423828][ C0] lock(&br->lock); [ 46.424013][ C0] [ 46.424013][ C0] *** DEADLOCK *** [ 46.424013][ C0] [ 46.424370][ C0] 1 lock held by swapper/0/0: [ 46.424617][ C0] #0: ffffc90000007d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 46.425119][ C0] [ 46.425119][ C0] the shortest dependencies between 2nd lock and 1st lock: [ 46.425545][ C0] -> (&p->alloc_lock){+.+.}-{2:2} { [ 46.425803][ C0] HARDIRQ-ON-W at: [ 46.425996][ C0] __lock_acquire+0x797/0x1570 [ 46.426328][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.426656][ C0] _raw_spin_lock+0x30/0x40 [ 46.426976][ C0] set_mems_allowed+0x1d/0x210 [ 46.427281][ C0] kernel_init_freeable+0x72/0x310 [ 46.427586][ C0] kernel_init+0x20/0x200 [ 46.427899][ C0] ret_from_fork+0x31/0x70 [ 46.428200][ C0] ret_from_fork_asm+0x1a/0x30 [ 46.428411][ C0] SOFTIRQ-ON-W at: [ 46.428525][ C0] __lock_acquire+0x797/0x1570 [ 46.428710][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.428901][ C0] _raw_spin_lock+0x30/0x40 [ 46.429108][ C0] set_mems_allowed+0x1d/0x210 [ 46.429291][ C0] kernel_init_freeable+0x72/0x310 [ 46.429476][ C0] kernel_init+0x20/0x200 [ 46.429660][ C0] ret_from_fork+0x31/0x70 [ 46.429843][ C0] ret_from_fork_asm+0x1a/0x30 [ 46.430033][ C0] INITIAL USE at: [ 46.430218][ C0] __lock_acquire+0x797/0x1570 [ 46.430529][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.430839][ C0] _raw_spin_lock+0x30/0x40 [ 46.431091][ C0] set_mems_allowed+0x1d/0x210 [ 46.431275][ C0] kernel_init_freeable+0x72/0x310 [ 46.431459][ C0] kernel_init+0x20/0x200 [ 46.431645][ C0] ret_from_fork+0x31/0x70 [ 46.431840][ C0] ret_from_fork_asm+0x1a/0x30 [ 46.432149][ C0] } [ 46.432225][ C0] ... key at: [] __key.387+0x0/0x40 [ 46.432448][ C0] ... acquired at: [ 46.432559][ C0] __lock_acquire+0xaf0/0x1570 [ 46.432805][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.432954][ C0] _raw_spin_lock+0x30/0x40 [ 46.433113][ C0] __get_task_comm+0x27/0x70 [ 46.433263][ C0] ref_tracker_alloc+0x2ee/0x490 [ 46.433595][ C0] linkwatch_fire_event+0x196/0x200 [ 46.433747][ C0] veth_newlink+0x367/0x830 [veth] [ 46.433897][ C0] rtnl_newlink_create+0x341/0x850 [ 46.434054][ C0] __rtnl_newlink+0xac9/0xd80 [ 46.434318][ C0] rtnl_newlink+0x63/0xa0 [ 46.434577][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.434722][ C0] netlink_rcv_skb+0x130/0x360 [ 46.434875][ C0] netlink_unicast+0x449/0x710 [ 46.435034][ C0] netlink_sendmsg+0x723/0xbe0 [ 46.435290][ C0] ____sys_sendmsg+0x7b2/0xa10 [ 46.435444][ C0] ___sys_sendmsg+0xee/0x170 [ 46.435593][ C0] __sys_sendmsg+0xcd/0x170 [ 46.435741][ C0] do_syscall_64+0xc6/0x1e0 [ 46.435989][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.436182][ C0] [ 46.436257][ C0] -> (lweventlist_lock){....}-{2:2} { [ 46.436410][ C0] INITIAL USE at: [ 46.436521][ C0] __lock_acquire+0x797/0x1570 [ 46.436891][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.437090][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.437280][ C0] linkwatch_sync_dev+0x29/0x1f0 [ 46.437563][ C0] rtnl_getlink+0x4c9/0x970 [ 46.437750][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.437936][ C0] netlink_rcv_skb+0x130/0x360 [ 46.438191][ C0] netlink_unicast+0x449/0x710 [ 46.438677][ C0] netlink_sendmsg+0x723/0xbe0 [ 46.438947][ C0] __sys_sendto+0x37d/0x410 [ 46.439145][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 46.439519][ C0] do_syscall_64+0xc6/0x1e0 [ 46.439702][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.439924][ C0] } [ 46.440003][ C0] ... key at: [] lweventlist_lock+0x18/0x60 [ 46.440332][ C0] ... acquired at: [ 46.440443][ C0] __lock_acquire+0xaf0/0x1570 [ 46.440592][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.440739][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.440977][ C0] linkwatch_fire_event+0x74/0x200 [ 46.441135][ C0] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 46.441464][ C0] br_set_mac_address+0x1f3/0x260 [bridge] [ 46.441684][ C0] dev_set_mac_address+0x28a/0x410 [ 46.441833][ C0] dev_set_mac_address_user+0x31/0x50 [ 46.442093][ C0] do_setlink+0x17b4/0x21e0 [ 46.442246][ C0] rtnl_setlink+0x1f7/0x310 [ 46.442395][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.442545][ C0] netlink_rcv_skb+0x130/0x360 [ 46.442790][ C0] netlink_unicast+0x449/0x710 [ 46.442937][ C0] netlink_sendmsg+0x723/0xbe0 [ 46.443090][ C0] __sys_sendto+0x37d/0x410 [ 46.443331][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 46.443481][ C0] do_syscall_64+0xc6/0x1e0 [ 46.443628][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.443814][ C0] [ 46.443889][ C0] -> (&br->lock){+.-.}-{2:2} { [ 46.444155][ C0] HARDIRQ-ON-W at: [ 46.444268][ C0] __lock_acquire+0x797/0x1570 [ 46.444464][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.444651][ C0] _raw_spin_lock_bh+0x38/0x50 [ 46.444857][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 46.445125][ C0] dev_set_mac_address+0x28a/0x410 [ 46.445318][ C0] dev_set_mac_address_user+0x31/0x50 [ 46.445597][ C0] do_setlink+0x17b4/0x21e0 [ 46.445781][ C0] rtnl_setlink+0x1f7/0x310 [ 46.445961][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.446194][ C0] netlink_rcv_skb+0x130/0x360 [ 46.446476][ C0] netlink_unicast+0x449/0x710 [ 46.446664][ C0] netlink_sendmsg+0x723/0xbe0 [ 46.446850][ C0] __sys_sendto+0x37d/0x410 [ 46.447137][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 46.447324][ C0] do_syscall_64+0xc6/0x1e0 [ 46.447508][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.447731][ C0] IN-SOFTIRQ-W at: [ 46.447844][ C0] __lock_acquire+0x797/0x1570 [ 46.448142][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.448335][ C0] _raw_spin_lock+0x30/0x40 [ 46.448522][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.448785][ C0] call_timer_fn+0x13b/0x230 [ 46.449077][ C0] __run_timers+0x545/0x810 [ 46.449265][ C0] run_timer_softirq+0xe8/0x1b0 [ 46.449452][ C0] __do_softirq+0x1f8/0x5df [ 46.449634][ C0] irq_exit_rcu+0x97/0xc0 [ 46.449909][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.450139][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.450359][ C0] default_idle+0xf/0x20 [ 46.450633][ C0] default_idle_call+0x6d/0xb0 [ 46.450815][ C0] cpuidle_idle_call+0x1f4/0x280 [ 46.451001][ C0] do_idle+0xf9/0x160 [ 46.451179][ C0] cpu_startup_entry+0x54/0x60 [ 46.451452][ C0] rest_init+0x14f/0x260 [ 46.451637][ C0] start_kernel+0x318/0x3d0 [ 46.451820][ C0] x86_64_start_reservations+0x18/0x30 [ 46.452129][ C0] x86_64_start_kernel+0xba/0x110 [ 46.452315][ C0] common_startup_64+0x12c/0x138 [ 46.452500][ C0] INITIAL USE at: [ 46.452610][ C0] __lock_acquire+0x797/0x1570 [ 46.452792][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.452974][ C0] _raw_spin_lock_bh+0x38/0x50 [ 46.453168][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 46.453513][ C0] dev_set_mac_address+0x28a/0x410 [ 46.453699][ C0] dev_set_mac_address_user+0x31/0x50 [ 46.453880][ C0] do_setlink+0x17b4/0x21e0 [ 46.454072][ C0] rtnl_setlink+0x1f7/0x310 [ 46.454351][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.454532][ C0] netlink_rcv_skb+0x130/0x360 [ 46.454713][ C0] netlink_unicast+0x449/0x710 [ 46.454989][ C0] netlink_sendmsg+0x723/0xbe0 [ 46.455187][ C0] __sys_sendto+0x37d/0x410 [ 46.455369][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 46.455644][ C0] do_syscall_64+0xc6/0x1e0 [ 46.455826][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.456053][ C0] } [ 46.456128][ C0] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 46.456514][ C0] ... acquired at: [ 46.456622][ C0] mark_lock+0x28d/0x3e0 [ 46.456769][ C0] mark_usage+0xd9/0x2a0 [ 46.456916][ C0] __lock_acquire+0x797/0x1570 [ 46.457161][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.457307][ C0] _raw_spin_lock+0x30/0x40 [ 46.457453][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.457673][ C0] call_timer_fn+0x13b/0x230 [ 46.457913][ C0] __run_timers+0x545/0x810 [ 46.458069][ C0] run_timer_softirq+0xe8/0x1b0 [ 46.458215][ C0] __do_softirq+0x1f8/0x5df [ 46.458368][ C0] irq_exit_rcu+0x97/0xc0 [ 46.458610][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.458791][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.458971][ C0] default_idle+0xf/0x20 [ 46.459149][ C0] default_idle_call+0x6d/0xb0 [ 46.459388][ C0] cpuidle_idle_call+0x1f4/0x280 [ 46.459535][ C0] do_idle+0xf9/0x160 [ 46.459644][ C0] cpu_startup_entry+0x54/0x60 [ 46.459791][ C0] rest_init+0x14f/0x260 [ 46.459935][ C0] start_kernel+0x318/0x3d0 [ 46.460176][ C0] x86_64_start_reservations+0x18/0x30 [ 46.460323][ C0] x86_64_start_kernel+0xba/0x110 [ 46.460472][ C0] common_startup_64+0x12c/0x138 [ 46.460621][ C0] [ 46.460694][ C0] [ 46.460694][ C0] stack backtrace: [ 46.460873][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc1-virtme #1 [ 46.461092][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 46.461506][ C0] Call Trace: [ 46.461616][ C0] [ 46.461691][ C0] dump_stack_lvl+0x82/0xd0 [ 46.461838][ C0] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 46.462124][ C0] ? common_startup_64+0x12c/0x138 [ 46.462274][ C0] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 46.462454][ C0] ? __pfx_usage_skip+0x10/0x10 [ 46.462600][ C0] ? __pfx_usage_match+0x10/0x10 [ 46.462834][ C0] ? arch_stack_walk+0x8c/0xf0 [ 46.462979][ C0] mark_lock_irq+0x4cd/0xa10 [ 46.463126][ C0] ? __pfx_mark_lock_irq+0x10/0x10 [ 46.463274][ C0] ? stack_trace_save+0x94/0xd0 [ 46.463421][ C0] ? add_chain_cache+0x248/0x8b0 [ 46.463657][ C0] ? save_trace+0x8f/0x5b0 [ 46.463803][ C0] mark_lock+0x28d/0x3e0 [ 46.463915][ C0] mark_usage+0xd9/0x2a0 [ 46.464028][ C0] __lock_acquire+0x797/0x1570 [ 46.464265][ C0] ? __lock_acquire+0xaf0/0x1570 [ 46.464411][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.464666][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.464816][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.465129][ C0] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.465275][ C0] ? trace_lock_acquire+0x135/0x1c0 [ 46.465420][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.465637][ C0] ? lock_acquire+0x32/0xc0 [ 46.465783][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.466000][ C0] _raw_spin_lock+0x30/0x40 [ 46.466152][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.466369][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.466681][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.466932][ C0] call_timer_fn+0x13b/0x230 [ 46.467079][ C0] ? call_timer_fn+0xe8/0x230 [ 46.467314][ C0] ? call_timer_fn+0xe8/0x230 [ 46.467459][ C0] ? __pfx_call_timer_fn+0x10/0x10 [ 46.467609][ C0] ? mark_lock+0x38/0x3e0 [ 46.467762][ C0] __run_timers+0x545/0x810 [ 46.467909][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.468267][ C0] ? __pfx___run_timers+0x10/0x10 [ 46.468415][ C0] ? do_raw_spin_lock+0x131/0x270 [ 46.468563][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 46.468708][ C0] ? lock_acquire+0x32/0xc0 [ 46.468872][ C0] ? run_timer_softirq+0xe0/0x1b0 [ 46.469031][ C0] run_timer_softirq+0xe8/0x1b0 [ 46.469179][ C0] __do_softirq+0x1f8/0x5df [ 46.469327][ C0] irq_exit_rcu+0x97/0xc0 [ 46.469439][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.469590][ C0] [ 46.469679][ C0] [ 46.469754][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.469934][ C0] RIP: 0010:default_idle+0xf/0x20 [ 46.470184][ 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 [ 46.470697][ C0] RSP: 0018:ffffffffacc07e00 EFLAGS: 00000246 [ 46.470976][ C0] RAX: 00000000000b19e1 RBX: 1ffffffff5980fc2 RCX: ffffffffabd0e9d5 [ 46.471194][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa96aa4a4 [ 46.471408][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0709c [ 46.471811][ C0] R10: ffff8880360384e3 R11: ffff88803603dc80 R12: 0000000000000000 [ 46.472050][ C0] R13: ffffffffacc1d000 R14: dffffc0000000000 R15: 0000000000014770 [ 46.472369][ C0] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 46.472516][ C0] ? cpuidle_idle_call+0x1f4/0x280 [ 46.472663][ C0] default_idle_call+0x6d/0xb0 [ 46.472810][ C0] cpuidle_idle_call+0x1f4/0x280 [ 46.472956][ C0] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 46.473196][ C0] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 46.473347][ C0] do_idle+0xf9/0x160 [ 46.473466][ C0] cpu_startup_entry+0x54/0x60 [ 46.473614][ C0] rest_init+0x14f/0x260 [ 46.473816][ C0] start_kernel+0x318/0x3d0 [ 46.473963][ C0] x86_64_start_reservations+0x18/0x30 [ 46.474110][ C0] x86_64_start_kernel+0xba/0x110 [ 46.474256][ C0] common_startup_64+0x12c/0x138 [ 46.474406][ C0] [ 47.522442][ T351] veth3: entered promiscuous mode [ 48.006352][ T357] GACT probability NOT on [ 49.747917][ T364] veth3: left promiscuous mode [ 49.854775][ T365] veth3: entered promiscuous mode [ 51.686880][ T374] veth3: left promiscuous mode [ 51.786192][ T376] br0: port 3(veth4) entered disabled state [ 51.883502][ T377] br0: port 2(veth2) entered disabled state [ 51.978875][ T378] br0: port 1(veth1) entered disabled state [ 52.069315][ T379] veth4: left allmulticast mode [ 52.069472][ T379] veth4: left promiscuous mode [ 52.069716][ T379] br0: port 3(veth4) entered disabled state [ 52.070608][ T379] veth2: left allmulticast mode [ 52.070740][ T379] veth2: left promiscuous mode [ 52.071617][ T379] br0: port 2(veth2) entered disabled state [ 52.072458][ T379] veth1: left allmulticast mode [ 52.072591][ T379] veth1: left promiscuous mode [ 52.072816][ T379] br0: port 1(veth1) entered disabled state