[ 26.608684][ T259] ip (259) used greatest stack depth: 23328 bytes left [ 32.530629][ T316] br: port 1(veth1) entered blocking state [ 32.532178][ T316] br: port 1(veth1) entered disabled state [ 32.532643][ T316] veth1: entered allmulticast mode [ 32.544236][ T316] veth1: entered promiscuous mode [ 32.547996][ T51] br: port 1(veth1) entered blocking state [ 32.548461][ T51] br: port 1(veth1) entered forwarding state [ 32.666666][ T319] br: port 2(veth3) entered blocking state [ 32.666949][ T319] br: port 2(veth3) entered disabled state [ 32.667197][ T319] veth3: entered allmulticast mode [ 32.669093][ T319] veth3: entered promiscuous mode [ 32.670588][ T63] br: port 2(veth3) entered blocking state [ 32.670977][ T63] br: port 2(veth3) entered forwarding state [ 32.797578][ T320] br: port 3(veth4) entered blocking state [ 32.797871][ T320] br: port 3(veth4) entered disabled state [ 32.798127][ T320] veth4: entered allmulticast mode [ 32.800037][ T320] veth4: entered promiscuous mode [ 32.807982][ T49] br: port 3(veth4) entered blocking state [ 32.808228][ T49] br: port 3(veth4) entered forwarding state [ 47.923944][ C2] [ 47.924112][ C2] ======================================================== [ 47.924331][ C2] WARNING: possible irq lock inversion dependency detected [ 47.924537][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 47.924678][ C2] -------------------------------------------------------- [ 47.924874][ C2] swapper/2/0 just changed the state of lock: [ 47.925072][ C2] ffff8880051eac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 47.925425][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 47.925627][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 47.925632][ C2] [ 47.925632][ C2] [ 47.925632][ C2] and interrupts could create inverse lock ordering between them. [ 47.925632][ C2] [ 47.926125][ C2] [ 47.926125][ C2] other info that might help us debug this: [ 47.926329][ C2] Chain exists of: [ 47.926329][ C2] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 47.926329][ C2] [ 47.926630][ C2] Possible interrupt unsafe locking scenario: [ 47.926630][ C2] [ 47.926828][ C2] CPU0 CPU1 [ 47.926968][ C2] ---- ---- [ 47.927124][ C2] lock(&p->alloc_lock); [ 47.927229][ C2] local_irq_disable(); [ 47.927396][ C2] lock(&br->lock); [ 47.927563][ C2] lock(lweventlist_lock); [ 47.927738][ C2] [ 47.927843][ C2] lock(&br->lock); [ 47.927951][ C2] [ 47.927951][ C2] *** DEADLOCK *** [ 47.927951][ C2] [ 47.928178][ C2] 1 lock held by swapper/2/0: [ 47.928313][ C2] #0: ffffc90000230d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 47.928595][ C2] [ 47.928595][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 47.928830][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 47.928971][ C2] HARDIRQ-ON-W at: [ 47.929075][ C2] __lock_acquire+0x797/0x1570 [ 47.929254][ C2] lock_acquire.part.0+0xeb/0x330 [ 47.929421][ C2] _raw_spin_lock+0x30/0x40 [ 47.929596][ C2] set_mems_allowed+0x1d/0x210 [ 47.929777][ C2] kernel_init_freeable+0x72/0x310 [ 47.929953][ C2] kernel_init+0x20/0x200 [ 47.930129][ C2] ret_from_fork+0x31/0x70 [ 47.930317][ C2] ret_from_fork_asm+0x1a/0x30 [ 47.930491][ C2] SOFTIRQ-ON-W at: [ 47.930629][ C2] __lock_acquire+0x797/0x1570 [ 47.930816][ C2] lock_acquire.part.0+0xeb/0x330 [ 47.930998][ C2] _raw_spin_lock+0x30/0x40 [ 47.931186][ C2] set_mems_allowed+0x1d/0x210 [ 47.931369][ C2] kernel_init_freeable+0x72/0x310 [ 47.931544][ C2] kernel_init+0x20/0x200 [ 47.931715][ C2] ret_from_fork+0x31/0x70 [ 47.931888][ C2] ret_from_fork_asm+0x1a/0x30 [ 47.932070][ C2] INITIAL USE at: [ 47.932174][ C2] __lock_acquire+0x797/0x1570 [ 47.932348][ C2] lock_acquire.part.0+0xeb/0x330 [ 47.932528][ C2] _raw_spin_lock+0x30/0x40 [ 47.932701][ C2] set_mems_allowed+0x1d/0x210 [ 47.932881][ C2] kernel_init_freeable+0x72/0x310 [ 47.933050][ C2] kernel_init+0x20/0x200 [ 47.933221][ C2] ret_from_fork+0x31/0x70 [ 47.933392][ C2] ret_from_fork_asm+0x1a/0x30 [ 47.933572][ C2] } [ 47.933645][ C2] ... key at: [] __key.387+0x0/0x40 [ 47.933849][ C2] ... acquired at: [ 47.933958][ C2] __lock_acquire+0xaf0/0x1570 [ 47.934102][ C2] lock_acquire.part.0+0xeb/0x330 [ 47.934233][ C2] _raw_spin_lock+0x30/0x40 [ 47.934371][ C2] __get_task_comm+0x27/0x70 [ 47.934509][ C2] ref_tracker_alloc+0x2ee/0x490 [ 47.934651][ C2] linkwatch_fire_event+0x196/0x200 [ 47.934784][ C2] veth_newlink+0x367/0x830 [veth] [ 47.934942][ C2] rtnl_newlink_create+0x341/0x850 [ 47.935093][ C2] __rtnl_newlink+0xac9/0xd80 [ 47.935243][ C2] rtnl_newlink+0x63/0xa0 [ 47.935394][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 47.935549][ C2] netlink_rcv_skb+0x130/0x360 [ 47.935713][ C2] netlink_unicast+0x449/0x710 [ 47.935859][ C2] netlink_sendmsg+0x723/0xbe0 [ 47.936007][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 47.936159][ C2] ___sys_sendmsg+0xee/0x170 [ 47.936314][ C2] __sys_sendmsg+0xcd/0x170 [ 47.936476][ C2] do_syscall_64+0xc6/0x1e0 [ 47.936625][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 47.936811][ C2] [ 47.936892][ C2] -> (lweventlist_lock){....}-{2:2} { [ 47.937050][ C2] INITIAL USE at: [ 47.937164][ C2] __lock_acquire+0x797/0x1570 [ 47.937349][ C2] lock_acquire.part.0+0xeb/0x330 [ 47.937543][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 47.937731][ C2] linkwatch_sync_dev+0x29/0x1f0 [ 47.937918][ C2] rtnl_getlink+0x4c9/0x970 [ 47.938104][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 47.938287][ C2] netlink_rcv_skb+0x130/0x360 [ 47.938468][ C2] netlink_unicast+0x449/0x710 [ 47.938634][ C2] netlink_sendmsg+0x723/0xbe0 [ 47.938799][ C2] __sys_sendto+0x37d/0x410 [ 47.938972][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 47.939140][ C2] do_syscall_64+0xc6/0x1e0 [ 47.939315][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 47.939516][ C2] } [ 47.939583][ C2] ... key at: [] lweventlist_lock+0x18/0x60 [ 47.939778][ C2] ... acquired at: [ 47.939877][ C2] __lock_acquire+0xaf0/0x1570 [ 47.940014][ C2] lock_acquire.part.0+0xeb/0x330 [ 47.940213][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 47.940391][ C2] linkwatch_fire_event+0x74/0x200 [ 47.940536][ C2] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 47.940766][ C2] br_set_mac_address+0x1f3/0x260 [bridge] [ 47.940992][ C2] dev_set_mac_address+0x28a/0x410 [ 47.941127][ C2] dev_set_mac_address_user+0x31/0x50 [ 47.941260][ C2] do_setlink+0x17b4/0x21e0 [ 47.941399][ C2] rtnl_setlink+0x1f7/0x310 [ 47.941545][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 47.941695][ C2] netlink_rcv_skb+0x130/0x360 [ 47.941848][ C2] netlink_unicast+0x449/0x710 [ 47.941997][ C2] netlink_sendmsg+0x723/0xbe0 [ 47.942154][ C2] __sys_sendto+0x37d/0x410 [ 47.942293][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 47.942431][ C2] do_syscall_64+0xc6/0x1e0 [ 47.942583][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 47.942774][ C2] [ 47.942850][ C2] -> (&br->lock){+.-.}-{2:2} { [ 47.943008][ C2] HARDIRQ-ON-W at: [ 47.943121][ C2] __lock_acquire+0x797/0x1570 [ 47.943312][ C2] lock_acquire.part.0+0xeb/0x330 [ 47.943499][ C2] _raw_spin_lock_bh+0x38/0x50 [ 47.943687][ C2] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 47.943965][ C2] br_dev_open+0xa2/0x120 [bridge] [ 47.944192][ C2] __dev_open+0x221/0x430 [ 47.944380][ C2] __dev_change_flags+0x469/0x6c0 [ 47.944567][ C2] rtnl_configure_link+0x118/0x200 [ 47.944755][ C2] rtnl_newlink_create+0x36e/0x850 [ 47.944944][ C2] __rtnl_newlink+0xac9/0xd80 [ 47.945132][ C2] rtnl_newlink+0x63/0xa0 [ 47.945325][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 47.945513][ C2] netlink_rcv_skb+0x130/0x360 [ 47.945704][ C2] netlink_unicast+0x449/0x710 [ 47.945891][ C2] netlink_sendmsg+0x723/0xbe0 [ 47.946090][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 47.946276][ C2] ___sys_sendmsg+0xee/0x170 [ 47.946465][ C2] __sys_sendmsg+0xcd/0x170 [ 47.946660][ C2] do_syscall_64+0xc6/0x1e0 [ 47.946850][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 47.947076][ C2] IN-SOFTIRQ-W at: [ 47.947191][ C2] __lock_acquire+0x797/0x1570 [ 47.947383][ C2] lock_acquire.part.0+0xeb/0x330 [ 47.947571][ C2] _raw_spin_lock+0x30/0x40 [ 47.947757][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 47.948060][ C2] call_timer_fn+0x13b/0x230 [ 47.948251][ C2] __run_timers+0x545/0x810 [ 47.948430][ C2] run_timer_softirq+0xe8/0x1b0 [ 47.948613][ C2] __do_softirq+0x1f8/0x5df [ 47.948793][ C2] irq_exit_rcu+0x97/0xc0 [ 47.948989][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 47.949232][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 47.949446][ C2] default_idle+0xf/0x20 [ 47.949638][ C2] default_idle_call+0x6d/0xb0 [ 47.949818][ C2] cpuidle_idle_call+0x1f4/0x280 [ 47.950002][ C2] do_idle+0xf9/0x160 [ 47.950155][ C2] cpu_startup_entry+0x54/0x60 [ 47.950347][ C2] start_secondary+0x21c/0x2b0 [ 47.950533][ C2] common_startup_64+0x12c/0x138 [ 47.950714][ C2] INITIAL USE at: [ 47.950825][ C2] __lock_acquire+0x797/0x1570 [ 47.951007][ C2] lock_acquire.part.0+0xeb/0x330 [ 47.951189][ C2] _raw_spin_lock_bh+0x38/0x50 [ 47.951374][ C2] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 47.951636][ C2] br_dev_open+0xa2/0x120 [bridge] [ 47.951853][ C2] __dev_open+0x221/0x430 [ 47.952034][ C2] __dev_change_flags+0x469/0x6c0 [ 47.952212][ C2] rtnl_configure_link+0x118/0x200 [ 47.952394][ C2] rtnl_newlink_create+0x36e/0x850 [ 47.952828][ C2] __rtnl_newlink+0xac9/0xd80 [ 47.953012][ C2] rtnl_newlink+0x63/0xa0 [ 47.953193][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 47.953379][ C2] netlink_rcv_skb+0x130/0x360 [ 47.953560][ C2] netlink_unicast+0x449/0x710 [ 47.953738][ C2] netlink_sendmsg+0x723/0xbe0 [ 47.953920][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 47.954191][ C2] ___sys_sendmsg+0xee/0x170 [ 47.954372][ C2] __sys_sendmsg+0xcd/0x170 [ 47.954552][ C2] do_syscall_64+0xc6/0x1e0 [ 47.954817][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 47.955066][ C2] } [ 47.955149][ C2] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 47.955520][ C2] ... acquired at: [ 47.955636][ C2] mark_lock+0x28d/0x3e0 [ 47.955783][ C2] mark_usage+0xd9/0x2a0 [ 47.955931][ C2] __lock_acquire+0x797/0x1570 [ 47.956081][ C2] lock_acquire.part.0+0xeb/0x330 [ 47.956381][ C2] _raw_spin_lock+0x30/0x40 [ 47.956534][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 47.956754][ C2] call_timer_fn+0x13b/0x230 [ 47.956905][ C2] __run_timers+0x545/0x810 [ 47.957128][ C2] run_timer_softirq+0xe8/0x1b0 [ 47.957268][ C2] __do_softirq+0x1f8/0x5df [ 47.957418][ C2] irq_exit_rcu+0x97/0xc0 [ 47.957565][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 47.957832][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 47.958009][ C2] default_idle+0xf/0x20 [ 47.958142][ C2] default_idle_call+0x6d/0xb0 [ 47.958273][ C2] cpuidle_idle_call+0x1f4/0x280 [ 47.958489][ C2] do_idle+0xf9/0x160 [ 47.958604][ C2] cpu_startup_entry+0x54/0x60 [ 47.958752][ C2] start_secondary+0x21c/0x2b0 [ 47.958903][ C2] common_startup_64+0x12c/0x138 [ 47.959110][ C2] [ 47.959186][ C2] [ 47.959186][ C2] stack backtrace: [ 47.959370][ C2] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-virtme #1 [ 47.959583][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 47.959996][ C2] Call Trace: [ 47.960102][ C2] [ 47.960173][ C2] dump_stack_lvl+0x82/0xd0 [ 47.960320][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 47.960586][ C2] ? common_startup_64+0x12c/0x138 [ 47.960738][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 47.960934][ C2] ? __pfx_usage_skip+0x10/0x10 [ 47.961085][ C2] ? __pfx_usage_match+0x10/0x10 [ 47.961320][ C2] ? arch_stack_walk+0x8c/0xf0 [ 47.961471][ C2] mark_lock_irq+0x4cd/0xa10 [ 47.961620][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 47.961768][ C2] ? stack_trace_save+0x94/0xd0 [ 47.961999][ C2] ? add_chain_cache+0x248/0x8b0 [ 47.962150][ C2] ? save_trace+0x8f/0x5b0 [ 47.962301][ C2] mark_lock+0x28d/0x3e0 [ 47.962413][ C2] mark_usage+0xd9/0x2a0 [ 47.962534][ C2] __lock_acquire+0x797/0x1570 [ 47.962702][ C2] ? __lock_acquire+0xaf0/0x1570 [ 47.962852][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 47.963113][ C2] lock_acquire.part.0+0xeb/0x330 [ 47.963262][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 47.963563][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 47.963712][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 47.963861][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 47.964192][ C2] ? lock_acquire+0x32/0xc0 [ 47.964343][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 47.964567][ C2] _raw_spin_lock+0x30/0x40 [ 47.964722][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 47.965019][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 47.965246][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 47.965498][ C2] call_timer_fn+0x13b/0x230 [ 47.965637][ C2] ? call_timer_fn+0xe8/0x230 [ 47.965853][ C2] ? call_timer_fn+0xe8/0x230 [ 47.965994][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 47.966128][ C2] ? mark_lock+0x38/0x3e0 [ 47.966241][ C2] __run_timers+0x545/0x810 [ 47.966458][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 47.966719][ C2] ? __pfx___run_timers+0x10/0x10 [ 47.966869][ C2] ? do_raw_spin_lock+0x131/0x270 [ 47.967002][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 47.967222][ C2] ? lock_acquire+0x32/0xc0 [ 47.967355][ C2] ? run_timer_softirq+0xe0/0x1b0 [ 47.967511][ C2] run_timer_softirq+0xe8/0x1b0 [ 47.967667][ C2] __do_softirq+0x1f8/0x5df [ 47.967981][ C2] irq_exit_rcu+0x97/0xc0 [ 47.968085][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 47.968220][ C2] [ 47.968303][ C2] [ 47.968380][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 47.968554][ C2] RIP: 0010:default_idle+0xf/0x20 [ 47.968709][ 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 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 [ 47.969351][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000242 [ 47.969540][ C2] RAX: 000000000011a713 RBX: 1ffff9200002bfc1 RCX: ffffffff9870e9d5 [ 47.969770][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff960aa4a4 [ 47.970097][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f2709c [ 47.970324][ C2] R10: ffff88802f9384e3 R11: ffff88802f93dc80 R12: 0000000000000000 [ 47.970548][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 47.970865][ C2] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 47.971016][ C2] ? cpuidle_idle_call+0x1f4/0x280 [ 47.971167][ C2] default_idle_call+0x6d/0xb0 [ 47.971312][ C2] cpuidle_idle_call+0x1f4/0x280 [ 47.971547][ C2] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 47.971695][ C2] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 47.971845][ C2] do_idle+0xf9/0x160 [ 47.971958][ C2] cpu_startup_entry+0x54/0x60 [ 47.972118][ C2] start_secondary+0x21c/0x2b0 [ 47.972345][ C2] ? __pfx_start_secondary+0x10/0x10 [ 47.972496][ C2] common_startup_64+0x12c/0x138 [ 47.972671][ C2] [ 130.275385][ T659] Mirror/redirect action on [ 168.064784][ T801] br: port 3(veth4) entered disabled state [ 168.065944][ T801] veth4: left allmulticast mode [ 168.066127][ T801] veth4: left promiscuous mode [ 168.066401][ T801] br: port 3(veth4) entered disabled state [ 168.166514][ T802] br: port 2(veth3) entered disabled state [ 168.166962][ T802] veth3: left allmulticast mode [ 168.167109][ T802] veth3: left promiscuous mode [ 168.167467][ T802] br: port 2(veth3) entered disabled state [ 168.271450][ T803] br: port 1(veth1) entered disabled state [ 168.271945][ T803] veth1: left allmulticast mode [ 168.272087][ T803] veth1: left promiscuous mode [ 168.272328][ T803] br: port 1(veth1) entered disabled state