[ 30.466778][ T294] br0: port 1(veth1) entered blocking state [ 30.467577][ T294] br0: port 1(veth1) entered disabled state [ 30.468338][ T294] veth1: entered allmulticast mode [ 30.471639][ T294] veth1: entered promiscuous mode [ 30.625225][ T296] br0: port 2(veth3) entered blocking state [ 30.625516][ T296] br0: port 2(veth3) entered disabled state [ 30.626655][ T296] veth3: entered allmulticast mode [ 30.628611][ T296] veth3: entered promiscuous mode [ 30.990656][ T64] br0: port 1(veth1) entered blocking state [ 30.991552][ T64] br0: port 1(veth1) entered forwarding state [ 31.132076][ T7] br0: port 2(veth3) entered blocking state [ 31.132352][ T7] br0: port 2(veth3) entered forwarding state [ 46.391706][ C2] [ 46.391825][ C2] ======================================================== [ 46.392075][ C2] WARNING: possible irq lock inversion dependency detected [ 46.392289][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 46.392434][ C2] -------------------------------------------------------- [ 46.392651][ C2] swapper/2/0 just changed the state of lock: [ 46.392825][ C2] ffff88800732ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.393204][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 46.393407][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 46.393411][ C2] [ 46.393411][ C2] [ 46.393411][ C2] and interrupts could create inverse lock ordering between them. [ 46.393411][ C2] [ 46.393919][ C2] [ 46.393919][ C2] other info that might help us debug this: [ 46.394140][ C2] Chain exists of: [ 46.394140][ C2] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 46.394140][ C2] [ 46.394450][ C2] Possible interrupt unsafe locking scenario: [ 46.394450][ C2] [ 46.394658][ C2] CPU0 CPU1 [ 46.394796][ C2] ---- ---- [ 46.394943][ C2] lock(&p->alloc_lock); [ 46.395049][ C2] local_irq_disable(); [ 46.395222][ C2] lock(&br->lock); [ 46.395396][ C2] lock(lweventlist_lock); [ 46.395569][ C2] [ 46.395673][ C2] lock(&br->lock); [ 46.395782][ C2] [ 46.395782][ C2] *** DEADLOCK *** [ 46.395782][ C2] [ 46.395994][ C2] 1 lock held by swapper/2/0: [ 46.396131][ C2] #0: ffffc90000230b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 46.396418][ C2] [ 46.396418][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 46.396657][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 46.396800][ C2] HARDIRQ-ON-W at: [ 46.396940][ C2] __lock_acquire+0x797/0x1570 [ 46.397148][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.397323][ C2] _raw_spin_lock+0x30/0x40 [ 46.397502][ C2] set_mems_allowed+0x1d/0x210 [ 46.397682][ C2] kernel_init_freeable+0x72/0x310 [ 46.397868][ C2] kernel_init+0x20/0x200 [ 46.398136][ C2] ret_from_fork+0x31/0x70 [ 46.398408][ C2] ret_from_fork_asm+0x1a/0x30 [ 46.398678][ C2] SOFTIRQ-ON-W at: [ 46.398844][ C2] __lock_acquire+0x797/0x1570 [ 46.399117][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.399382][ C2] _raw_spin_lock+0x30/0x40 [ 46.399650][ C2] set_mems_allowed+0x1d/0x210 [ 46.399917][ C2] kernel_init_freeable+0x72/0x310 [ 46.400187][ C2] kernel_init+0x20/0x200 [ 46.400453][ C2] ret_from_fork+0x31/0x70 [ 46.400717][ C2] ret_from_fork_asm+0x1a/0x30 [ 46.400982][ C2] INITIAL USE at: [ 46.401142][ C2] __lock_acquire+0x797/0x1570 [ 46.401411][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.401684][ C2] _raw_spin_lock+0x30/0x40 [ 46.401950][ C2] set_mems_allowed+0x1d/0x210 [ 46.402232][ C2] kernel_init_freeable+0x72/0x310 [ 46.402510][ C2] kernel_init+0x20/0x200 [ 46.402774][ C2] ret_from_fork+0x31/0x70 [ 46.403037][ C2] ret_from_fork_asm+0x1a/0x30 [ 46.403308][ C2] } [ 46.403420][ C2] ... key at: [] __key.387+0x0/0x40 [ 46.403738][ C2] ... acquired at: [ 46.403896][ C2] __lock_acquire+0xaf0/0x1570 [ 46.404127][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.404341][ C2] _raw_spin_lock+0x30/0x40 [ 46.404556][ C2] __get_task_comm+0x27/0x70 [ 46.404775][ C2] ref_tracker_alloc+0x2ee/0x490 [ 46.404993][ C2] linkwatch_fire_event+0x196/0x200 [ 46.405208][ C2] veth_newlink+0x367/0x830 [veth] [ 46.405431][ C2] rtnl_newlink_create+0x341/0x850 [ 46.405649][ C2] __rtnl_newlink+0xac9/0xd80 [ 46.405870][ C2] rtnl_newlink+0x63/0xa0 [ 46.406094][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.406312][ C2] netlink_rcv_skb+0x130/0x360 [ 46.406535][ C2] netlink_unicast+0x449/0x710 [ 46.406762][ C2] netlink_sendmsg+0x723/0xbe0 [ 46.406974][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 46.407196][ C2] ___sys_sendmsg+0xee/0x170 [ 46.407412][ C2] __sys_sendmsg+0xcd/0x170 [ 46.407630][ C2] do_syscall_64+0xc6/0x1e0 [ 46.407855][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.408127][ C2] [ 46.408241][ C2] -> (lweventlist_lock){....}-{2:2} { [ 46.408466][ C2] INITIAL USE at: [ 46.408639][ C2] __lock_acquire+0x797/0x1570 [ 46.408926][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.409202][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.409478][ C2] linkwatch_sync_dev+0x29/0x1f0 [ 46.409755][ C2] rtnl_getlink+0x4c9/0x970 [ 46.410042][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.410316][ C2] netlink_rcv_skb+0x130/0x360 [ 46.410598][ C2] netlink_unicast+0x449/0x710 [ 46.410877][ C2] netlink_sendmsg+0x723/0xbe0 [ 46.411156][ C2] __sys_sendto+0x37d/0x410 [ 46.411433][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 46.411713][ C2] do_syscall_64+0xc6/0x1e0 [ 46.412005][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.412339][ C2] } [ 46.412453][ C2] ... key at: [] lweventlist_lock+0x18/0x60 [ 46.412783][ C2] ... acquired at: [ 46.412945][ C2] __lock_acquire+0xaf0/0x1570 [ 46.413171][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.413391][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.413621][ C2] linkwatch_fire_event+0x74/0x200 [ 46.413841][ C2] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 46.414192][ C2] br_set_mac_address+0x1f3/0x260 [bridge] [ 46.414544][ C2] dev_set_mac_address+0x28a/0x410 [ 46.414760][ C2] dev_set_mac_address_user+0x31/0x50 [ 46.414981][ C2] do_setlink+0x17b4/0x21e0 [ 46.415196][ C2] rtnl_setlink+0x1f7/0x310 [ 46.415424][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.415647][ C2] netlink_rcv_skb+0x130/0x360 [ 46.415863][ C2] netlink_unicast+0x449/0x710 [ 46.416079][ C2] netlink_sendmsg+0x723/0xbe0 [ 46.416295][ C2] __sys_sendto+0x37d/0x410 [ 46.416523][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 46.416744][ C2] do_syscall_64+0xc6/0x1e0 [ 46.416959][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.417232][ C2] [ 46.417352][ C2] -> (&br->lock){+.-.}-{2:2} { [ 46.417585][ C2] HARDIRQ-ON-W at: [ 46.417753][ C2] __lock_acquire+0x797/0x1570 [ 46.418027][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.418308][ C2] _raw_spin_lock_bh+0x38/0x50 [ 46.418589][ C2] br_set_mac_address+0xd2/0x260 [bridge] [ 46.418995][ C2] dev_set_mac_address+0x28a/0x410 [ 46.419280][ C2] dev_set_mac_address_user+0x31/0x50 [ 46.419559][ C2] do_setlink+0x17b4/0x21e0 [ 46.419841][ C2] rtnl_setlink+0x1f7/0x310 [ 46.420120][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.420399][ C2] netlink_rcv_skb+0x130/0x360 [ 46.420679][ C2] netlink_unicast+0x449/0x710 [ 46.420955][ C2] netlink_sendmsg+0x723/0xbe0 [ 46.421244][ C2] __sys_sendto+0x37d/0x410 [ 46.421530][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 46.421805][ C2] do_syscall_64+0xc6/0x1e0 [ 46.422080][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.422398][ C2] IN-SOFTIRQ-W at: [ 46.422560][ C2] __lock_acquire+0x797/0x1570 [ 46.422827][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.423090][ C2] _raw_spin_lock+0x30/0x40 [ 46.423359][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.423745][ C2] call_timer_fn+0x13b/0x230 [ 46.424028][ C2] __run_timers+0x545/0x810 [ 46.424443][ C2] timer_expire_remote+0x9b/0xe0 [ 46.424703][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 46.424968][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 46.425378][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 46.425640][ C2] __do_softirq+0x1f8/0x5df [ 46.425903][ C2] irq_exit_rcu+0x97/0xc0 [ 46.426171][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.426666][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.426983][ C2] default_idle+0xf/0x20 [ 46.427247][ C2] default_idle_call+0x6d/0xb0 [ 46.427675][ C2] cpuidle_idle_call+0x1f4/0x280 [ 46.427936][ C2] do_idle+0xf9/0x160 [ 46.428148][ C2] cpu_startup_entry+0x54/0x60 [ 46.428583][ C2] start_secondary+0x21c/0x2b0 [ 46.428876][ C2] common_startup_64+0x12c/0x138 [ 46.429149][ C2] INITIAL USE at: [ 46.429320][ C2] __lock_acquire+0x797/0x1570 [ 46.429895][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.430181][ C2] _raw_spin_lock_bh+0x38/0x50 [ 46.430486][ C2] br_set_mac_address+0xd2/0x260 [bridge] [ 46.430893][ C2] dev_set_mac_address+0x28a/0x410 [ 46.431185][ C2] dev_set_mac_address_user+0x31/0x50 [ 46.431476][ C2] do_setlink+0x17b4/0x21e0 [ 46.431755][ C2] rtnl_setlink+0x1f7/0x310 [ 46.432166][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.432440][ C2] netlink_rcv_skb+0x130/0x360 [ 46.432715][ C2] netlink_unicast+0x449/0x710 [ 46.433174][ C2] netlink_sendmsg+0x723/0xbe0 [ 46.433470][ C2] __sys_sendto+0x37d/0x410 [ 46.433745][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 46.434179][ C2] do_syscall_64+0xc6/0x1e0 [ 46.434460][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.434787][ C2] } [ 46.434896][ C2] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 46.435512][ C2] ... acquired at: [ 46.435674][ C2] mark_lock+0x28d/0x3e0 [ 46.435893][ C2] mark_usage+0xd9/0x2a0 [ 46.436114][ C2] __lock_acquire+0x797/0x1570 [ 46.436481][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.436702][ C2] _raw_spin_lock+0x30/0x40 [ 46.436916][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.437259][ C2] call_timer_fn+0x13b/0x230 [ 46.437629][ C2] __run_timers+0x545/0x810 [ 46.437846][ C2] timer_expire_remote+0x9b/0xe0 [ 46.438061][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 46.438376][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 46.438775][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 46.439015][ C2] __do_softirq+0x1f8/0x5df [ 46.439238][ C2] irq_exit_rcu+0x97/0xc0 [ 46.439461][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.439738][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.440032][ C2] default_idle+0xf/0x20 [ 46.440252][ C2] default_idle_call+0x6d/0xb0 [ 46.440474][ C2] cpuidle_idle_call+0x1f4/0x280 [ 46.440845][ C2] do_idle+0xf9/0x160 [ 46.441022][ C2] cpu_startup_entry+0x54/0x60 [ 46.441242][ C2] start_secondary+0x21c/0x2b0 [ 46.441470][ C2] common_startup_64+0x12c/0x138 [ 46.441701][ C2] [ 46.441949][ C2] [ 46.441949][ C2] stack backtrace: [ 46.442215][ C2] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-virtme #1 [ 46.442549][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 46.443184][ C2] Call Trace: [ 46.443358][ C2] [ 46.443482][ C2] dump_stack_lvl+0x82/0xd0 [ 46.443730][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 46.444157][ C2] ? common_startup_64+0x12c/0x138 [ 46.444389][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 46.444660][ C2] ? __pfx_usage_skip+0x10/0x10 [ 46.444879][ C2] ? __pfx_usage_match+0x10/0x10 [ 46.445248][ C2] ? arch_stack_walk+0x8c/0xf0 [ 46.445473][ C2] mark_lock_irq+0x4cd/0xa10 [ 46.445687][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 46.445903][ C2] ? stack_trace_save+0x94/0xd0 [ 46.446133][ C2] ? add_chain_cache+0x248/0x8b0 [ 46.446504][ C2] ? save_trace+0x8f/0x5b0 [ 46.446700][ C2] mark_lock+0x28d/0x3e0 [ 46.446853][ C2] mark_usage+0xd9/0x2a0 [ 46.447005][ C2] __lock_acquire+0x797/0x1570 [ 46.447522][ C2] ? __lock_acquire+0xaf0/0x1570 [ 46.447749][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.448149][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.448350][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.448818][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.449031][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 46.449246][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.449579][ C2] ? lock_acquire+0x32/0xc0 [ 46.449792][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.450124][ C2] _raw_spin_lock+0x30/0x40 [ 46.450341][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.450669][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.451132][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.451520][ C2] call_timer_fn+0x13b/0x230 [ 46.451740][ C2] ? call_timer_fn+0xe8/0x230 [ 46.452113][ C2] ? call_timer_fn+0xe8/0x230 [ 46.452343][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 46.452559][ C2] ? mark_lock+0x38/0x3e0 [ 46.452727][ C2] __run_timers+0x545/0x810 [ 46.452945][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.453477][ C2] ? __pfx___run_timers+0x10/0x10 [ 46.453691][ C2] ? __lock_release+0x103/0x460 [ 46.453902][ C2] ? do_raw_spin_lock+0x131/0x270 [ 46.454284][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 46.454524][ C2] ? lock_acquire+0x32/0xc0 [ 46.454752][ C2] ? timer_expire_remote+0x93/0xe0 [ 46.454979][ C2] timer_expire_remote+0x9b/0xe0 [ 46.455229][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 46.455592][ C2] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 46.455871][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 46.456096][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 46.456315][ C2] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 46.456694][ C2] __do_softirq+0x1f8/0x5df [ 46.456931][ C2] irq_exit_rcu+0x97/0xc0 [ 46.457107][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.457321][ C2] [ 46.457439][ C2] [ 46.457695][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.457970][ C2] RIP: 0010:default_idle+0xf/0x20 [ 46.458200][ C2] 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 93 20 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 [ 46.458959][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000246 [ 46.459241][ C2] RAX: 0000000000149e77 RBX: 1ffff9200002bfc1 RCX: ffffffffa850f9e5 [ 46.459731][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa5eaa4a4 [ 46.460048][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2709c [ 46.460393][ C2] R10: ffff8880361384e3 R11: ffff88803613dc80 R12: 0000000000000000 [ 46.460715][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 46.461045][ C2] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 46.461274][ C2] ? cpuidle_idle_call+0x1f4/0x280 [ 46.461506][ C2] default_idle_call+0x6d/0xb0 [ 46.461874][ C2] cpuidle_idle_call+0x1f4/0x280 [ 46.462114][ C2] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 46.462348][ C2] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 46.462579][ C2] do_idle+0xf9/0x160 [ 46.462753][ C2] cpu_startup_entry+0x54/0x60 [ 46.462972][ C2] start_secondary+0x21c/0x2b0 [ 46.463201][ C2] ? __pfx_start_secondary+0x10/0x10 [ 46.463433][ C2] common_startup_64+0x12c/0x138 [ 46.463806][ C2] [ 50.154276][ T534] br0: port 3(veth5) entered blocking state [ 50.154501][ T534] br0: port 3(veth5) entered disabled state [ 50.155683][ T534] veth5: entered allmulticast mode [ 50.157126][ T534] veth5: entered promiscuous mode [ 50.356518][ T539] veth5: left allmulticast mode [ 50.356714][ T539] veth5: left promiscuous mode [ 50.356977][ T539] br0: port 3(veth5) entered disabled state [ 51.348187][ T554] br0: port 3(veth5) entered blocking state [ 51.348422][ T554] br0: port 3(veth5) entered disabled state [ 51.348652][ T554] veth5: entered allmulticast mode [ 51.350136][ T554] veth5: entered promiscuous mode [ 51.350397][ T554] br0: adding interface veth5 with same address as a received packet (addr:de:ad:be:ef:42:00, vlan:0) [ 51.561369][ T559] veth5: left allmulticast mode [ 51.561538][ T559] veth5: left promiscuous mode [ 51.561805][ T559] br0: port 3(veth5) entered disabled state [ 105.192787][ T1291] br0: port 3(veth5) entered blocking state [ 105.193016][ T1291] br0: port 3(veth5) entered disabled state [ 105.193229][ T1291] veth5: entered allmulticast mode [ 105.194738][ T1291] veth5: entered promiscuous mode [ 105.451834][ T1297] br0: port 3(veth5) entered disabled state [ 105.554767][ T1298] br0: port 2(veth3) entered disabled state [ 105.643382][ T1299] br0: port 1(veth1) entered disabled state [ 105.763174][ T1301] veth5: left allmulticast mode [ 105.763345][ T1301] veth5: left promiscuous mode [ 105.763595][ T1301] br0: port 3(veth5) entered disabled state [ 105.764610][ T1301] veth3: left allmulticast mode [ 105.764766][ T1301] veth3: left promiscuous mode [ 105.765002][ T1301] br0: port 2(veth3) entered disabled state [ 105.766149][ T1301] veth1: left allmulticast mode [ 105.766298][ T1301] veth1: left promiscuous mode [ 105.766542][ T1301] br0: port 1(veth1) entered disabled state