[ 29.183108][ T284] br1: port 1(veth1) entered blocking state [ 29.184438][ T284] br1: port 1(veth1) entered disabled state [ 29.185074][ T284] veth1: entered allmulticast mode [ 29.187023][ T284] veth1: entered promiscuous mode [ 29.194030][ T284] ip (284) used greatest stack depth: 23792 bytes left [ 29.299442][ T7] br1: port 1(veth1) entered blocking state [ 29.299756][ T7] br1: port 1(veth1) entered forwarding state [ 29.436120][ T287] br1: port 2(veth2) entered blocking state [ 29.436424][ T287] br1: port 2(veth2) entered disabled state [ 29.436702][ T287] veth2: entered allmulticast mode [ 29.438598][ T287] veth2: entered promiscuous mode [ 29.558599][ T7] br1: port 2(veth2) entered blocking state [ 29.558846][ T7] br1: port 2(veth2) entered forwarding state [ 36.130833][ T306] GACT probability NOT on [ 44.335882][ C1] [ 44.336051][ C1] ======================================================== [ 44.336281][ C1] WARNING: possible irq lock inversion dependency detected [ 44.336513][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 44.336664][ C1] -------------------------------------------------------- [ 44.336887][ C1] swapper/1/0 just changed the state of lock: [ 44.337075][ C1] ffff888007ecac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.337520][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.337743][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 44.337747][ C1] [ 44.337747][ C1] [ 44.337747][ C1] and interrupts could create inverse lock ordering between them. [ 44.337747][ C1] [ 44.338326][ C1] [ 44.338326][ C1] other info that might help us debug this: [ 44.338549][ C1] Chain exists of: [ 44.338549][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.338549][ C1] [ 44.338914][ C1] Possible interrupt unsafe locking scenario: [ 44.338914][ C1] [ 44.339141][ C1] CPU0 CPU1 [ 44.339292][ C1] ---- ---- [ 44.339439][ C1] lock(&p->alloc_lock); [ 44.339573][ C1] local_irq_disable(); [ 44.339746][ C1] lock(&br->lock); [ 44.339928][ C1] lock(lweventlist_lock); [ 44.340103][ C1] [ 44.340209][ C1] lock(&br->lock); [ 44.340318][ C1] [ 44.340318][ C1] *** DEADLOCK *** [ 44.340318][ C1] [ 44.340529][ C1] 1 lock held by swapper/1/0: [ 44.340682][ C1] #0: ffffc900001d8b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.341000][ C1] [ 44.341000][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 44.341252][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.341428][ C1] HARDIRQ-ON-W at: [ 44.341545][ C1] __lock_acquire+0x797/0x1570 [ 44.341749][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.341949][ C1] _raw_spin_lock+0x30/0x40 [ 44.342143][ C1] set_mems_allowed+0x1d/0x210 [ 44.342337][ C1] kernel_init_freeable+0x72/0x310 [ 44.342533][ C1] kernel_init+0x20/0x200 [ 44.342729][ C1] ret_from_fork+0x31/0x70 [ 44.342922][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.343118][ C1] SOFTIRQ-ON-W at: [ 44.343236][ C1] __lock_acquire+0x797/0x1570 [ 44.343435][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.343637][ C1] _raw_spin_lock+0x30/0x40 [ 44.343830][ C1] set_mems_allowed+0x1d/0x210 [ 44.344019][ C1] kernel_init_freeable+0x72/0x310 [ 44.344217][ C1] kernel_init+0x20/0x200 [ 44.344407][ C1] ret_from_fork+0x31/0x70 [ 44.344599][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.344788][ C1] INITIAL USE at: [ 44.344903][ C1] __lock_acquire+0x797/0x1570 [ 44.345090][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.345283][ C1] _raw_spin_lock+0x30/0x40 [ 44.345471][ C1] set_mems_allowed+0x1d/0x210 [ 44.345660][ C1] kernel_init_freeable+0x72/0x310 [ 44.345851][ C1] kernel_init+0x20/0x200 [ 44.346041][ C1] ret_from_fork+0x31/0x70 [ 44.346231][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.346428][ C1] } [ 44.346507][ C1] ... key at: [] __key.387+0x0/0x40 [ 44.346737][ C1] ... acquired at: [ 44.346853][ C1] __lock_acquire+0xaf0/0x1570 [ 44.347009][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.347162][ C1] _raw_spin_lock+0x30/0x40 [ 44.347312][ C1] __get_task_comm+0x27/0x70 [ 44.347465][ C1] ref_tracker_alloc+0x2ee/0x490 [ 44.347622][ C1] linkwatch_fire_event+0x196/0x200 [ 44.347794][ C1] veth_newlink+0x367/0x830 [veth] [ 44.347958][ C1] rtnl_newlink_create+0x341/0x850 [ 44.348109][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.348265][ C1] rtnl_newlink+0x63/0xa0 [ 44.348421][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.348570][ C1] netlink_rcv_skb+0x130/0x360 [ 44.348725][ C1] netlink_unicast+0x449/0x710 [ 44.348878][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.349035][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.349190][ C1] ___sys_sendmsg+0xee/0x170 [ 44.349344][ C1] __sys_sendmsg+0xcd/0x170 [ 44.349497][ C1] do_syscall_64+0xc6/0x1e0 [ 44.349650][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.349840][ C1] [ 44.349918][ C1] -> (lweventlist_lock){....}-{2:2} { [ 44.350075][ C1] INITIAL USE at: [ 44.350188][ C1] __lock_acquire+0x797/0x1570 [ 44.350390][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.350620][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.350812][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 44.351014][ C1] rtnl_getlink+0x4c9/0x970 [ 44.351207][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.351416][ C1] netlink_rcv_skb+0x130/0x360 [ 44.351623][ C1] netlink_unicast+0x449/0x710 [ 44.351817][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.352007][ C1] __sys_sendto+0x37d/0x410 [ 44.352197][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 44.352387][ C1] do_syscall_64+0xc6/0x1e0 [ 44.352586][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.352815][ C1] } [ 44.352892][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.353124][ C1] ... acquired at: [ 44.353238][ C1] __lock_acquire+0xaf0/0x1570 [ 44.353390][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.353543][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.353696][ C1] linkwatch_fire_event+0x74/0x200 [ 44.353858][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.354098][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.354320][ C1] dev_set_mac_address+0x28a/0x410 [ 44.354477][ C1] dev_set_mac_address_user+0x31/0x50 [ 44.354629][ C1] do_setlink+0x17b4/0x21e0 [ 44.354787][ C1] rtnl_setlink+0x1f7/0x310 [ 44.354941][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.355097][ C1] netlink_rcv_skb+0x130/0x360 [ 44.355254][ C1] netlink_unicast+0x449/0x710 [ 44.355408][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.355561][ C1] __sys_sendto+0x37d/0x410 [ 44.355713][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 44.355869][ C1] do_syscall_64+0xc6/0x1e0 [ 44.356021][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.356211][ C1] [ 44.356288][ C1] -> (&br->lock){+.-.}-{2:2} { [ 44.356453][ C1] HARDIRQ-ON-W at: [ 44.356567][ C1] __lock_acquire+0x797/0x1570 [ 44.356759][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.356950][ C1] _raw_spin_lock_bh+0x38/0x50 [ 44.357152][ C1] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 44.357417][ C1] br_dev_open+0xa2/0x120 [bridge] [ 44.357642][ C1] __dev_open+0x221/0x430 [ 44.357847][ C1] __dev_change_flags+0x469/0x6c0 [ 44.358036][ C1] rtnl_configure_link+0x118/0x200 [ 44.358226][ C1] rtnl_newlink_create+0x36e/0x850 [ 44.358416][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.358610][ C1] rtnl_newlink+0x63/0xa0 [ 44.358803][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.359002][ C1] netlink_rcv_skb+0x130/0x360 [ 44.359196][ C1] netlink_unicast+0x449/0x710 [ 44.359396][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.359586][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.359777][ C1] ___sys_sendmsg+0xee/0x170 [ 44.359972][ C1] __sys_sendmsg+0xcd/0x170 [ 44.360163][ C1] do_syscall_64+0xc6/0x1e0 [ 44.360355][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.360582][ C1] IN-SOFTIRQ-W at: [ 44.360698][ C1] __lock_acquire+0x797/0x1570 [ 44.360887][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.361088][ C1] _raw_spin_lock+0x30/0x40 [ 44.361283][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.361553][ C1] call_timer_fn+0x13b/0x230 [ 44.361745][ C1] __run_timers+0x545/0x810 [ 44.361939][ C1] timer_expire_remote+0x9b/0xe0 [ 44.362127][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 44.362318][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.362508][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 44.362701][ C1] __do_softirq+0x1f8/0x5df [ 44.362889][ C1] irq_exit_rcu+0x97/0xc0 [ 44.363079][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.363316][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.363541][ C1] default_idle+0xf/0x20 [ 44.363729][ C1] default_idle_call+0x6d/0xb0 [ 44.363924][ C1] cpuidle_idle_call+0x1f4/0x280 [ 44.364128][ C1] do_idle+0xf9/0x160 [ 44.364280][ C1] cpu_startup_entry+0x54/0x60 [ 44.364474][ C1] start_secondary+0x21c/0x2b0 [ 44.364667][ C1] common_startup_64+0x12c/0x138 [ 44.364856][ C1] INITIAL USE at: [ 44.364970][ C1] __lock_acquire+0x797/0x1570 [ 44.365173][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.365363][ C1] _raw_spin_lock_bh+0x38/0x50 [ 44.365556][ C1] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 44.365830][ C1] br_dev_open+0xa2/0x120 [bridge] [ 44.366053][ C1] __dev_open+0x221/0x430 [ 44.366244][ C1] __dev_change_flags+0x469/0x6c0 [ 44.366437][ C1] rtnl_configure_link+0x118/0x200 [ 44.366633][ C1] rtnl_newlink_create+0x36e/0x850 [ 44.366824][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.367014][ C1] rtnl_newlink+0x63/0xa0 [ 44.367205][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.367393][ C1] netlink_rcv_skb+0x130/0x360 [ 44.367583][ C1] netlink_unicast+0x449/0x710 [ 44.367803][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.368064][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.368237][ C1] ___sys_sendmsg+0xee/0x170 [ 44.368416][ C1] __sys_sendmsg+0xcd/0x170 [ 44.368677][ C1] do_syscall_64+0xc6/0x1e0 [ 44.368850][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.369063][ C1] } [ 44.369133][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.369486][ C1] ... acquired at: [ 44.369611][ C1] mark_lock+0x28d/0x3e0 [ 44.369766][ C1] mark_usage+0xd9/0x2a0 [ 44.369953][ C1] __lock_acquire+0x797/0x1570 [ 44.370291][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.370520][ C1] _raw_spin_lock+0x30/0x40 [ 44.370730][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.371113][ C1] call_timer_fn+0x13b/0x230 [ 44.371476][ C1] __run_timers+0x545/0x810 [ 44.371690][ C1] timer_expire_remote+0x9b/0xe0 [ 44.371912][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 44.372139][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.372505][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 44.372674][ C1] __do_softirq+0x1f8/0x5df [ 44.372899][ C1] irq_exit_rcu+0x97/0xc0 [ 44.373119][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.373521][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.373786][ C1] default_idle+0xf/0x20 [ 44.374003][ C1] default_idle_call+0x6d/0xb0 [ 44.374183][ C1] cpuidle_idle_call+0x1f4/0x280 [ 44.374516][ C1] do_idle+0xf9/0x160 [ 44.374682][ C1] cpu_startup_entry+0x54/0x60 [ 44.374921][ C1] start_secondary+0x21c/0x2b0 [ 44.375140][ C1] common_startup_64+0x12c/0x138 [ 44.375501][ C1] [ 44.375619][ C1] [ 44.375619][ C1] stack backtrace: [ 44.375881][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 44.376216][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.376838][ C1] Call Trace: [ 44.377016][ C1] [ 44.377131][ C1] dump_stack_lvl+0x82/0xd0 [ 44.377370][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.377746][ C1] ? common_startup_64+0x12c/0x138 [ 44.377967][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.378238][ C1] ? __pfx_usage_skip+0x10/0x10 [ 44.378464][ C1] ? __pfx_usage_match+0x10/0x10 [ 44.378976][ C1] ? arch_stack_walk+0x8c/0xf0 [ 44.379208][ C1] mark_lock_irq+0x4cd/0xa10 [ 44.379430][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.379653][ C1] ? stack_trace_save+0x94/0xd0 [ 44.380023][ C1] ? add_chain_cache+0x248/0x8b0 [ 44.380250][ C1] ? save_trace+0x8f/0x5b0 [ 44.380468][ C1] mark_lock+0x28d/0x3e0 [ 44.380636][ C1] mark_usage+0xd9/0x2a0 [ 44.380784][ C1] __lock_acquire+0x797/0x1570 [ 44.381161][ C1] ? __lock_acquire+0xaf0/0x1570 [ 44.381399][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.381793][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.382008][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.382495][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.382707][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 44.382913][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.383394][ C1] ? lock_acquire+0x32/0xc0 [ 44.383624][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.383966][ C1] _raw_spin_lock+0x30/0x40 [ 44.384173][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.384643][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.384982][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.385377][ C1] call_timer_fn+0x13b/0x230 [ 44.385592][ C1] ? call_timer_fn+0xe8/0x230 [ 44.385949][ C1] ? call_timer_fn+0xe8/0x230 [ 44.386161][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 44.386369][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.386576][ C1] __run_timers+0x545/0x810 [ 44.386925][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.387306][ C1] ? __pfx___run_timers+0x10/0x10 [ 44.387522][ C1] ? __lock_release+0x103/0x460 [ 44.387735][ C1] ? do_raw_spin_lock+0x131/0x270 [ 44.388101][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.388311][ C1] ? lock_acquire+0x32/0xc0 [ 44.388533][ C1] ? timer_expire_remote+0x93/0xe0 [ 44.388759][ C1] timer_expire_remote+0x9b/0xe0 [ 44.389104][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 44.389326][ C1] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 44.389610][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.389850][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 44.390209][ C1] ? do_raw_spin_lock+0x131/0x270 [ 44.390427][ C1] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 44.390647][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.390872][ C1] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 44.391328][ C1] __do_softirq+0x1f8/0x5df [ 44.391561][ C1] irq_exit_rcu+0x97/0xc0 [ 44.391735][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.391972][ C1] [ 44.392089][ C1] [ 44.392207][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.392481][ C1] RIP: 0010:default_idle+0xf/0x20 [ 44.392704][ 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 [ 44.393642][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000246 [ 44.393946][ C1] RAX: 000000000008b271 RBX: 1ffff92000029fc1 RCX: ffffffffab30e9d5 [ 44.394422][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa8caa4a4 [ 44.394761][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1709c [ 44.395096][ C1] R10: ffff8880360b84e3 R11: ffff8880360ad9b0 R12: 0000000000000000 [ 44.395579][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 44.395930][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.396155][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 44.396379][ C1] default_idle_call+0x6d/0xb0 [ 44.396898][ C1] cpuidle_idle_call+0x1f4/0x280 [ 44.397126][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.397381][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.397595][ C1] do_idle+0xf9/0x160 [ 44.397855][ C1] cpu_startup_entry+0x54/0x60 [ 44.397999][ C1] start_secondary+0x21c/0x2b0 [ 44.398137][ C1] ? __pfx_start_secondary+0x10/0x10 [ 44.398275][ C1] common_startup_64+0x12c/0x138 [ 44.398417][ C1] [ 57.045975][ T471] br1: port 2(veth2) entered disabled state [ 57.145904][ T472] veth2: left allmulticast mode [ 57.146084][ T472] veth2: left promiscuous mode [ 57.146344][ T472] br1: port 2(veth2) entered disabled state [ 57.243131][ T473] br1: port 1(veth1) entered disabled state [ 57.335733][ T474] veth1: left allmulticast mode [ 57.335901][ T474] veth1: left promiscuous mode [ 57.336146][ T474] br1: port 1(veth1) entered disabled state