[ 24.106415][ T236] ip (236) used greatest stack depth: 23744 bytes left [ 25.146337][ T260] ip (260) used greatest stack depth: 23280 bytes left [ 30.983273][ T318] br: port 1(veth1) entered blocking state [ 30.983793][ T318] br: port 1(veth1) entered disabled state [ 30.984136][ T318] veth1: entered allmulticast mode [ 30.986023][ T318] veth1: entered promiscuous mode [ 30.988259][ T50] br: port 1(veth1) entered blocking state [ 30.988570][ T50] br: port 1(veth1) entered forwarding state [ 31.118662][ T319] br: port 2(veth3) entered blocking state [ 31.119043][ T319] br: port 2(veth3) entered disabled state [ 31.128584][ T319] veth3: entered allmulticast mode [ 31.131312][ T319] veth3: entered promiscuous mode [ 31.132969][ T50] br: port 2(veth3) entered blocking state [ 31.133219][ T50] br: port 2(veth3) entered forwarding state [ 31.246262][ T320] br: port 3(veth4) entered blocking state [ 31.246608][ T320] br: port 3(veth4) entered disabled state [ 31.246838][ T320] veth4: entered allmulticast mode [ 31.248695][ T320] veth4: entered promiscuous mode [ 31.252384][ T7] br: port 3(veth4) entered blocking state [ 31.252610][ T7] br: port 3(veth4) entered forwarding state [ 46.378968][ C1] [ 46.379161][ C1] ======================================================== [ 46.379403][ C1] WARNING: possible irq lock inversion dependency detected [ 46.379626][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 46.379792][ C1] -------------------------------------------------------- [ 46.380018][ C1] swapper/1/0 just changed the state of lock: [ 46.380207][ C1] ffff88800455ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.380605][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 46.380841][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 46.380845][ C1] [ 46.380845][ C1] [ 46.380845][ C1] and interrupts could create inverse lock ordering between them. [ 46.380845][ C1] [ 46.381419][ C1] [ 46.381419][ C1] other info that might help us debug this: [ 46.381648][ C1] Chain exists of: [ 46.381648][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 46.381648][ C1] [ 46.382150][ C1] Possible interrupt unsafe locking scenario: [ 46.382150][ C1] [ 46.382504][ C1] CPU0 CPU1 [ 46.382678][ C1] ---- ---- [ 46.382843][ C1] lock(&p->alloc_lock); [ 46.382970][ C1] local_irq_disable(); [ 46.383162][ C1] lock(&br->lock); [ 46.383359][ C1] lock(lweventlist_lock); [ 46.383558][ C1] [ 46.383679][ C1] lock(&br->lock); [ 46.383804][ C1] [ 46.383804][ C1] *** DEADLOCK *** [ 46.383804][ C1] [ 46.384101][ C1] 1 lock held by swapper/1/0: [ 46.384343][ C1] #0: ffffc900001d8b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 46.384821][ C1] [ 46.384821][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 46.385231][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 46.385508][ C1] HARDIRQ-ON-W at: [ 46.385689][ C1] __lock_acquire+0x797/0x1570 [ 46.385989][ C1] lock_acquire.part.0+0xeb/0x330 [ 46.386293][ C1] _raw_spin_lock+0x30/0x40 [ 46.386597][ C1] set_mems_allowed+0x1d/0x210 [ 46.386836][ C1] kernel_init_freeable+0x72/0x310 [ 46.387042][ C1] kernel_init+0x20/0x200 [ 46.387241][ C1] ret_from_fork+0x31/0x70 [ 46.387437][ C1] ret_from_fork_asm+0x1a/0x30 [ 46.387629][ C1] SOFTIRQ-ON-W at: [ 46.387754][ C1] __lock_acquire+0x797/0x1570 [ 46.387972][ C1] lock_acquire.part.0+0xeb/0x330 [ 46.388174][ C1] _raw_spin_lock+0x30/0x40 [ 46.388366][ C1] set_mems_allowed+0x1d/0x210 [ 46.388569][ C1] kernel_init_freeable+0x72/0x310 [ 46.388768][ C1] kernel_init+0x20/0x200 [ 46.388985][ C1] ret_from_fork+0x31/0x70 [ 46.389188][ C1] ret_from_fork_asm+0x1a/0x30 [ 46.389407][ C1] INITIAL USE at: [ 46.389524][ C1] __lock_acquire+0x797/0x1570 [ 46.389718][ C1] lock_acquire.part.0+0xeb/0x330 [ 46.390010][ C1] _raw_spin_lock+0x30/0x40 [ 46.390307][ C1] set_mems_allowed+0x1d/0x210 [ 46.390602][ C1] kernel_init_freeable+0x72/0x310 [ 46.390827][ C1] kernel_init+0x20/0x200 [ 46.391023][ C1] ret_from_fork+0x31/0x70 [ 46.391214][ C1] ret_from_fork_asm+0x1a/0x30 [ 46.391403][ C1] } [ 46.391491][ C1] ... key at: [] __key.387+0x0/0x40 [ 46.391728][ C1] ... acquired at: [ 46.391845][ C1] __lock_acquire+0xaf0/0x1570 [ 46.392001][ C1] lock_acquire.part.0+0xeb/0x330 [ 46.392158][ C1] _raw_spin_lock+0x30/0x40 [ 46.392313][ C1] __get_task_comm+0x27/0x70 [ 46.392469][ C1] ref_tracker_alloc+0x2ee/0x490 [ 46.392627][ C1] linkwatch_fire_event+0x196/0x200 [ 46.392791][ C1] veth_newlink+0x367/0x830 [veth] [ 46.392951][ C1] rtnl_newlink_create+0x341/0x850 [ 46.393106][ C1] __rtnl_newlink+0xac9/0xd80 [ 46.393258][ C1] rtnl_newlink+0x63/0xa0 [ 46.393416][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.393569][ C1] netlink_rcv_skb+0x130/0x360 [ 46.393733][ C1] netlink_unicast+0x449/0x710 [ 46.393900][ C1] netlink_sendmsg+0x723/0xbe0 [ 46.394126][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 46.394353][ C1] ___sys_sendmsg+0xee/0x170 [ 46.394581][ C1] __sys_sendmsg+0xcd/0x170 [ 46.394813][ C1] do_syscall_64+0xc6/0x1e0 [ 46.395053][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.395359][ C1] [ 46.395481][ C1] -> (lweventlist_lock){....}-{2:2} { [ 46.395730][ C1] INITIAL USE at: [ 46.395906][ C1] __lock_acquire+0x797/0x1570 [ 46.396212][ C1] lock_acquire.part.0+0xeb/0x330 [ 46.396510][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.396752][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 46.396956][ C1] rtnl_getlink+0x4c9/0x970 [ 46.397152][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.397346][ C1] netlink_rcv_skb+0x130/0x360 [ 46.397537][ C1] netlink_unicast+0x449/0x710 [ 46.397736][ C1] netlink_sendmsg+0x723/0xbe0 [ 46.398033][ C1] __sys_sendto+0x37d/0x410 [ 46.398326][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 46.398615][ C1] do_syscall_64+0xc6/0x1e0 [ 46.398848][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.399085][ C1] } [ 46.399253][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 46.399593][ C1] ... acquired at: [ 46.399767][ C1] __lock_acquire+0xaf0/0x1570 [ 46.400002][ C1] lock_acquire.part.0+0xeb/0x330 [ 46.400238][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.400475][ C1] linkwatch_fire_event+0x74/0x200 [ 46.400714][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 46.401087][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 46.401447][ C1] dev_set_mac_address+0x28a/0x410 [ 46.401698][ C1] dev_set_mac_address_user+0x31/0x50 [ 46.401924][ C1] do_setlink+0x17b4/0x21e0 [ 46.402096][ C1] rtnl_setlink+0x1f7/0x310 [ 46.402251][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.402406][ C1] netlink_rcv_skb+0x130/0x360 [ 46.402569][ C1] netlink_unicast+0x449/0x710 [ 46.402762][ C1] netlink_sendmsg+0x723/0xbe0 [ 46.402916][ C1] __sys_sendto+0x37d/0x410 [ 46.403087][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 46.403255][ C1] do_syscall_64+0xc6/0x1e0 [ 46.403409][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.403606][ C1] [ 46.403685][ C1] -> (&br->lock){+.-.}-{2:2} { [ 46.403850][ C1] HARDIRQ-ON-W at: [ 46.403990][ C1] __lock_acquire+0x797/0x1570 [ 46.404188][ C1] lock_acquire.part.0+0xeb/0x330 [ 46.404399][ C1] _raw_spin_lock_bh+0x38/0x50 [ 46.404598][ C1] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 46.404890][ C1] br_dev_open+0xa2/0x120 [bridge] [ 46.405115][ C1] __dev_open+0x221/0x430 [ 46.405330][ C1] __dev_change_flags+0x469/0x6c0 [ 46.405522][ C1] rtnl_configure_link+0x118/0x200 [ 46.405749][ C1] rtnl_newlink_create+0x36e/0x850 [ 46.406049][ C1] __rtnl_newlink+0xac9/0xd80 [ 46.406345][ C1] rtnl_newlink+0x63/0xa0 [ 46.406636][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.406853][ C1] netlink_rcv_skb+0x130/0x360 [ 46.407049][ C1] netlink_unicast+0x449/0x710 [ 46.407245][ C1] netlink_sendmsg+0x723/0xbe0 [ 46.407436][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 46.407636][ C1] ___sys_sendmsg+0xee/0x170 [ 46.407836][ C1] __sys_sendmsg+0xcd/0x170 [ 46.408029][ C1] do_syscall_64+0xc6/0x1e0 [ 46.408219][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.408450][ C1] IN-SOFTIRQ-W at: [ 46.408568][ C1] __lock_acquire+0x797/0x1570 [ 46.408764][ C1] lock_acquire.part.0+0xeb/0x330 [ 46.408957][ C1] _raw_spin_lock+0x30/0x40 [ 46.409162][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.409438][ C1] call_timer_fn+0x13b/0x230 [ 46.409631][ C1] __run_timers+0x545/0x810 [ 46.409828][ C1] timer_expire_remote+0x9b/0xe0 [ 46.410021][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 46.410220][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 46.410410][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 46.410602][ C1] __do_softirq+0x1f8/0x5df [ 46.410840][ C1] irq_exit_rcu+0x97/0xc0 [ 46.411132][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.411486][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.411824][ C1] default_idle+0xf/0x20 [ 46.412120][ C1] default_idle_call+0x6d/0xb0 [ 46.412419][ C1] cpuidle_idle_call+0x1f4/0x280 [ 46.412704][ C1] do_idle+0xf9/0x160 [ 46.412874][ C1] cpu_startup_entry+0x54/0x60 [ 46.413066][ C1] start_secondary+0x21c/0x2b0 [ 46.413266][ C1] common_startup_64+0x12c/0x138 [ 46.413458][ C1] INITIAL USE at: [ 46.413573][ C1] __lock_acquire+0x797/0x1570 [ 46.413785][ C1] lock_acquire.part.0+0xeb/0x330 [ 46.413980][ C1] _raw_spin_lock_bh+0x38/0x50 [ 46.414173][ C1] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 46.414440][ C1] br_dev_open+0xa2/0x120 [bridge] [ 46.414668][ C1] __dev_open+0x221/0x430 [ 46.414961][ C1] __dev_change_flags+0x469/0x6c0 [ 46.415151][ C1] rtnl_configure_link+0x118/0x200 [ 46.415344][ C1] rtnl_newlink_create+0x36e/0x850 [ 46.415613][ C1] __rtnl_newlink+0xac9/0xd80 [ 46.415805][ C1] rtnl_newlink+0x63/0xa0 [ 46.416002][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.416277][ C1] netlink_rcv_skb+0x130/0x360 [ 46.416470][ C1] netlink_unicast+0x449/0x710 [ 46.416658][ C1] netlink_sendmsg+0x723/0xbe0 [ 46.416854][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 46.417130][ C1] ___sys_sendmsg+0xee/0x170 [ 46.417345][ C1] __sys_sendmsg+0xcd/0x170 [ 46.417541][ C1] do_syscall_64+0xc6/0x1e0 [ 46.417846][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.418098][ C1] } [ 46.418176][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 46.418497][ C1] ... acquired at: [ 46.418691][ C1] mark_lock+0x28d/0x3e0 [ 46.418879][ C1] mark_usage+0xd9/0x2a0 [ 46.419035][ C1] __lock_acquire+0x797/0x1570 [ 46.419197][ C1] lock_acquire.part.0+0xeb/0x330 [ 46.419431][ C1] _raw_spin_lock+0x30/0x40 [ 46.419583][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.419813][ C1] call_timer_fn+0x13b/0x230 [ 46.419969][ C1] __run_timers+0x545/0x810 [ 46.420202][ C1] timer_expire_remote+0x9b/0xe0 [ 46.420352][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 46.420510][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 46.420661][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 46.420980][ C1] __do_softirq+0x1f8/0x5df [ 46.421135][ C1] irq_exit_rcu+0x97/0xc0 [ 46.421289][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.421478][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.421668][ C1] default_idle+0xf/0x20 [ 46.421836][ C1] default_idle_call+0x6d/0xb0 [ 46.421987][ C1] cpuidle_idle_call+0x1f4/0x280 [ 46.422141][ C1] do_idle+0xf9/0x160 [ 46.422257][ C1] cpu_startup_entry+0x54/0x60 [ 46.422490][ C1] start_secondary+0x21c/0x2b0 [ 46.422645][ C1] common_startup_64+0x12c/0x138 [ 46.422798][ C1] [ 46.422880][ C1] [ 46.422880][ C1] stack backtrace: [ 46.423150][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 46.423390][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 46.423731][ C1] Call Trace: [ 46.423934][ C1] [ 46.424016][ C1] dump_stack_lvl+0x82/0xd0 [ 46.424175][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 46.424366][ C1] ? common_startup_64+0x12c/0x138 [ 46.424601][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 46.424793][ C1] ? __pfx_usage_skip+0x10/0x10 [ 46.424948][ C1] ? __pfx_usage_match+0x10/0x10 [ 46.425101][ C1] ? arch_stack_walk+0x8c/0xf0 [ 46.425338][ C1] mark_lock_irq+0x4cd/0xa10 [ 46.425492][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 46.425644][ C1] ? stack_trace_save+0x94/0xd0 [ 46.425809][ C1] ? add_chain_cache+0x248/0x8b0 [ 46.425964][ C1] ? save_trace+0x8f/0x5b0 [ 46.426231][ C1] mark_lock+0x28d/0x3e0 [ 46.426348][ C1] mark_usage+0xd9/0x2a0 [ 46.426463][ C1] __lock_acquire+0x797/0x1570 [ 46.426639][ C1] ? __lock_acquire+0xaf0/0x1570 [ 46.426877][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.427153][ C1] lock_acquire.part.0+0xeb/0x330 [ 46.427307][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.427559][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.427719][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 46.427872][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.428126][ C1] ? lock_acquire+0x32/0xc0 [ 46.428279][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.428599][ C1] _raw_spin_lock+0x30/0x40 [ 46.428771][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.429011][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.429363][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.429638][ C1] call_timer_fn+0x13b/0x230 [ 46.429797][ C1] ? call_timer_fn+0xe8/0x230 [ 46.429949][ C1] ? call_timer_fn+0xe8/0x230 [ 46.430204][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 46.430362][ C1] ? mark_lock+0x38/0x3e0 [ 46.430509][ C1] __run_timers+0x545/0x810 [ 46.430667][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.431025][ C1] ? __pfx___run_timers+0x10/0x10 [ 46.431177][ C1] ? __lock_release+0x103/0x460 [ 46.431332][ C1] ? do_raw_spin_lock+0x131/0x270 [ 46.431484][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 46.431635][ C1] ? lock_acquire+0x32/0xc0 [ 46.431787][ C1] ? timer_expire_remote+0x93/0xe0 [ 46.431940][ C1] timer_expire_remote+0x9b/0xe0 [ 46.432095][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 46.432254][ C1] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 46.432556][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 46.432712][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 46.432865][ C1] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 46.433040][ C1] __do_softirq+0x1f8/0x5df [ 46.433365][ C1] irq_exit_rcu+0x97/0xc0 [ 46.433482][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.433659][ C1] [ 46.433759][ C1] [ 46.433838][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.434130][ C1] RIP: 0010:default_idle+0xf/0x20 [ 46.434293][ 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 [ 46.434943][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000242 [ 46.435147][ C1] RAX: 00000000000f0ef7 RBX: 1ffff92000029fc1 RCX: ffffffff9210e9d5 [ 46.435399][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8faaa4a4 [ 46.435723][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1709c [ 46.435981][ C1] R10: ffff8880360b84e3 R11: ffff8880360bdc80 R12: 0000000000000000 [ 46.436223][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 46.436565][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 46.436732][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 46.436888][ C1] default_idle_call+0x6d/0xb0 [ 46.437040][ C1] cpuidle_idle_call+0x1f4/0x280 [ 46.437294][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 46.437447][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 46.437625][ C1] do_idle+0xf9/0x160 [ 46.437745][ C1] cpu_startup_entry+0x54/0x60 [ 46.437987][ C1] start_secondary+0x21c/0x2b0 [ 46.438141][ C1] ? __pfx_start_secondary+0x10/0x10 [ 46.438295][ C1] common_startup_64+0x12c/0x138 [ 46.438456][ C1] [ 126.406155][ T653] Mirror/redirect action on [ 164.444745][ T796] br: port 3(veth4) entered disabled state [ 164.445248][ T796] veth4: left allmulticast mode [ 164.445394][ T796] veth4: left promiscuous mode [ 164.445678][ T796] br: port 3(veth4) entered disabled state [ 164.557441][ T798] br: port 2(veth3) entered disabled state [ 164.557882][ T798] veth3: left allmulticast mode [ 164.558020][ T798] veth3: left promiscuous mode [ 164.558265][ T798] br: port 2(veth3) entered disabled state [ 164.659414][ T799] br: port 1(veth1) entered disabled state [ 164.660774][ T799] veth1: left allmulticast mode [ 164.661011][ T799] veth1: left promiscuous mode [ 164.661295][ T799] br: port 1(veth1) entered disabled state