[ 26.883247][ T238] ip (238) used greatest stack depth: 24528 bytes left [ 31.486828][ T288] br0: port 1(veth1) entered blocking state [ 31.487203][ T288] br0: port 1(veth1) entered disabled state [ 31.487538][ T288] veth1: entered allmulticast mode [ 31.495871][ T288] veth1: entered promiscuous mode [ 31.630137][ T290] br0: port 2(veth2) entered blocking state [ 31.630592][ T290] br0: port 2(veth2) entered disabled state [ 31.631272][ T290] veth2: entered allmulticast mode [ 31.633245][ T290] veth2: entered promiscuous mode [ 31.870447][ T50] br0: port 1(veth1) entered blocking state [ 31.870838][ T50] br0: port 1(veth1) entered forwarding state [ 32.007928][ T49] br0: port 2(veth2) entered blocking state [ 32.008163][ T49] br0: port 2(veth2) entered forwarding state [ 44.002809][ T316] GACT probability NOT on [ 46.917577][ C3] [ 46.917821][ C3] ======================================================== [ 46.918142][ C3] WARNING: possible irq lock inversion dependency detected [ 46.918470][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 46.918681][ C3] -------------------------------------------------------- [ 46.918995][ C3] swapper/3/0 just changed the state of lock: [ 46.919343][ C3] ffff888005bcac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.919738][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 46.919953][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 46.919958][ C3] [ 46.919958][ C3] [ 46.919958][ C3] and interrupts could create inverse lock ordering between them. [ 46.919958][ C3] [ 46.920670][ C3] [ 46.920670][ C3] other info that might help us debug this: [ 46.920918][ C3] Chain exists of: [ 46.920918][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 46.920918][ C3] [ 46.921230][ C3] Possible interrupt unsafe locking scenario: [ 46.921230][ C3] [ 46.921433][ C3] CPU0 CPU1 [ 46.921608][ C3] ---- ---- [ 46.921811][ C3] lock(&p->alloc_lock); [ 46.921935][ C3] local_irq_disable(); [ 46.922172][ C3] lock(&br->lock); [ 46.922440][ C3] lock(lweventlist_lock); [ 46.922676][ C3] [ 46.922826][ C3] lock(&br->lock); [ 46.922990][ C3] [ 46.922990][ C3] *** DEADLOCK *** [ 46.922990][ C3] [ 46.923310][ C3] 1 lock held by swapper/3/0: [ 46.923533][ C3] #0: ffffc90000288d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 46.924012][ C3] [ 46.924012][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 46.924378][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 46.924637][ C3] HARDIRQ-ON-W at: [ 46.924817][ C3] __lock_acquire+0x797/0x1570 [ 46.925150][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.925420][ C3] _raw_spin_lock+0x30/0x40 [ 46.925702][ C3] set_mems_allowed+0x1d/0x210 [ 46.925980][ C3] kernel_init_freeable+0x72/0x310 [ 46.926283][ C3] kernel_init+0x20/0x200 [ 46.926578][ C3] ret_from_fork+0x31/0x70 [ 46.926879][ C3] ret_from_fork_asm+0x1a/0x30 [ 46.927187][ C3] SOFTIRQ-ON-W at: [ 46.927376][ C3] __lock_acquire+0x797/0x1570 [ 46.927670][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.927969][ C3] _raw_spin_lock+0x30/0x40 [ 46.928268][ C3] set_mems_allowed+0x1d/0x210 [ 46.928560][ C3] kernel_init_freeable+0x72/0x310 [ 46.928828][ C3] kernel_init+0x20/0x200 [ 46.929088][ C3] ret_from_fork+0x31/0x70 [ 46.929343][ C3] ret_from_fork_asm+0x1a/0x30 [ 46.929625][ C3] INITIAL USE at: [ 46.929789][ C3] __lock_acquire+0x797/0x1570 [ 46.930070][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.930360][ C3] _raw_spin_lock+0x30/0x40 [ 46.930575][ C3] set_mems_allowed+0x1d/0x210 [ 46.930752][ C3] kernel_init_freeable+0x72/0x310 [ 46.930925][ C3] kernel_init+0x20/0x200 [ 46.931097][ C3] ret_from_fork+0x31/0x70 [ 46.931270][ C3] ret_from_fork_asm+0x1a/0x30 [ 46.931467][ C3] } [ 46.931554][ C3] ... key at: [] __key.387+0x0/0x40 [ 46.931782][ C3] ... acquired at: [ 46.931888][ C3] __lock_acquire+0xaf0/0x1570 [ 46.932031][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.932209][ C3] _raw_spin_lock+0x30/0x40 [ 46.932379][ C3] __get_task_comm+0x27/0x70 [ 46.932588][ C3] ref_tracker_alloc+0x2ee/0x490 [ 46.932821][ C3] linkwatch_fire_event+0x196/0x200 [ 46.933022][ C3] veth_newlink+0x367/0x830 [veth] [ 46.933249][ C3] rtnl_newlink_create+0x341/0x850 [ 46.933496][ C3] __rtnl_newlink+0xac9/0xd80 [ 46.933726][ C3] rtnl_newlink+0x63/0xa0 [ 46.933959][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.934192][ C3] netlink_rcv_skb+0x130/0x360 [ 46.934440][ C3] netlink_unicast+0x449/0x710 [ 46.934684][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.934901][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 46.935118][ C3] ___sys_sendmsg+0xee/0x170 [ 46.935334][ C3] __sys_sendmsg+0xcd/0x170 [ 46.935556][ C3] do_syscall_64+0xc6/0x1e0 [ 46.935775][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.936039][ C3] [ 46.936152][ C3] -> (lweventlist_lock){....}-{2:2} { [ 46.936375][ C3] INITIAL USE at: [ 46.936544][ C3] __lock_acquire+0x797/0x1570 [ 46.936819][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.937083][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.937352][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 46.937614][ C3] rtnl_getlink+0x4c9/0x970 [ 46.937900][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.938177][ C3] netlink_rcv_skb+0x130/0x360 [ 46.938467][ C3] netlink_unicast+0x449/0x710 [ 46.938730][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.938999][ C3] __sys_sendto+0x37d/0x410 [ 46.939273][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 46.939499][ C3] do_syscall_64+0xc6/0x1e0 [ 46.939763][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.940077][ C3] } [ 46.940193][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 46.940515][ C3] ... acquired at: [ 46.940669][ C3] __lock_acquire+0xaf0/0x1570 [ 46.940882][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.941096][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.941321][ C3] linkwatch_fire_event+0x74/0x200 [ 46.941540][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 46.941858][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 46.942167][ C3] dev_set_mac_address+0x28a/0x410 [ 46.942386][ C3] dev_set_mac_address_user+0x31/0x50 [ 46.942590][ C3] do_setlink+0x17b4/0x21e0 [ 46.942802][ C3] rtnl_setlink+0x1f7/0x310 [ 46.942957][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.943099][ C3] netlink_rcv_skb+0x130/0x360 [ 46.943244][ C3] netlink_unicast+0x449/0x710 [ 46.943383][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.943549][ C3] __sys_sendto+0x37d/0x410 [ 46.943690][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 46.943828][ C3] do_syscall_64+0xc6/0x1e0 [ 46.943969][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.944141][ C3] [ 46.944224][ C3] -> (&br->lock){+.-.}-{2:2} { [ 46.944368][ C3] HARDIRQ-ON-W at: [ 46.944475][ C3] __lock_acquire+0x797/0x1570 [ 46.944658][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.944834][ C3] _raw_spin_lock_bh+0x38/0x50 [ 46.945015][ C3] br_set_mac_address+0xd2/0x260 [bridge] [ 46.945269][ C3] dev_set_mac_address+0x28a/0x410 [ 46.945449][ C3] dev_set_mac_address_user+0x31/0x50 [ 46.945633][ C3] do_setlink+0x17b4/0x21e0 [ 46.945811][ C3] rtnl_setlink+0x1f7/0x310 [ 46.945983][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.946162][ C3] netlink_rcv_skb+0x130/0x360 [ 46.946355][ C3] netlink_unicast+0x449/0x710 [ 46.946534][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.946727][ C3] __sys_sendto+0x37d/0x410 [ 46.946900][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 46.947071][ C3] do_syscall_64+0xc6/0x1e0 [ 46.947242][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.947451][ C3] IN-SOFTIRQ-W at: [ 46.947562][ C3] __lock_acquire+0x797/0x1570 [ 46.947734][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.947913][ C3] _raw_spin_lock+0x30/0x40 [ 46.948087][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.948333][ C3] call_timer_fn+0x13b/0x230 [ 46.948509][ C3] __run_timers+0x545/0x810 [ 46.948695][ C3] run_timer_softirq+0xe8/0x1b0 [ 46.948867][ C3] __do_softirq+0x1f8/0x5df [ 46.949044][ C3] irq_exit_rcu+0x97/0xc0 [ 46.949236][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.949442][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.949668][ C3] default_idle+0xf/0x20 [ 46.949845][ C3] default_idle_call+0x6d/0xb0 [ 46.950016][ C3] cpuidle_idle_call+0x1f4/0x280 [ 46.950195][ C3] do_idle+0xf9/0x160 [ 46.950334][ C3] cpu_startup_entry+0x54/0x60 [ 46.950513][ C3] start_secondary+0x21c/0x2b0 [ 46.950696][ C3] common_startup_64+0x12c/0x138 [ 46.950869][ C3] INITIAL USE at: [ 46.950977][ C3] __lock_acquire+0x797/0x1570 [ 46.951153][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.951332][ C3] _raw_spin_lock_bh+0x38/0x50 [ 46.951509][ C3] br_set_mac_address+0xd2/0x260 [bridge] [ 46.951844][ C3] dev_set_mac_address+0x28a/0x410 [ 46.952018][ C3] dev_set_mac_address_user+0x31/0x50 [ 46.952194][ C3] do_setlink+0x17b4/0x21e0 [ 46.952444][ C3] rtnl_setlink+0x1f7/0x310 [ 46.952630][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.952802][ C3] netlink_rcv_skb+0x130/0x360 [ 46.952980][ C3] netlink_unicast+0x449/0x710 [ 46.953231][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.953402][ C3] __sys_sendto+0x37d/0x410 [ 46.953596][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 46.953974][ C3] do_syscall_64+0xc6/0x1e0 [ 46.954240][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.954553][ C3] } [ 46.954652][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 46.955218][ C3] ... acquired at: [ 46.955376][ C3] mark_lock+0x28d/0x3e0 [ 46.955626][ C3] mark_usage+0xd9/0x2a0 [ 46.955843][ C3] __lock_acquire+0x797/0x1570 [ 46.956209][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.956429][ C3] _raw_spin_lock+0x30/0x40 [ 46.956683][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.957020][ C3] call_timer_fn+0x13b/0x230 [ 46.957381][ C3] __run_timers+0x545/0x810 [ 46.957621][ C3] run_timer_softirq+0xe8/0x1b0 [ 46.957855][ C3] __do_softirq+0x1f8/0x5df [ 46.958095][ C3] irq_exit_rcu+0x97/0xc0 [ 46.958460][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.958740][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.959008][ C3] default_idle+0xf/0x20 [ 46.959243][ C3] default_idle_call+0x6d/0xb0 [ 46.959601][ C3] cpuidle_idle_call+0x1f4/0x280 [ 46.959821][ C3] do_idle+0xf9/0x160 [ 46.959982][ C3] cpu_startup_entry+0x54/0x60 [ 46.960208][ C3] start_secondary+0x21c/0x2b0 [ 46.960572][ C3] common_startup_64+0x12c/0x138 [ 46.960798][ C3] [ 46.960908][ C3] [ 46.960908][ C3] stack backtrace: [ 46.961172][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 46.961628][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 46.962075][ C3] Call Trace: [ 46.962221][ C3] [ 46.962317][ C3] dump_stack_lvl+0x82/0xd0 [ 46.962663][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 46.962882][ C3] ? common_startup_64+0x12c/0x138 [ 46.963025][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 46.963197][ C3] ? __pfx_usage_skip+0x10/0x10 [ 46.963411][ C3] ? __pfx_usage_match+0x10/0x10 [ 46.963555][ C3] ? arch_stack_walk+0x8c/0xf0 [ 46.963694][ C3] mark_lock_irq+0x4cd/0xa10 [ 46.963836][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 46.964061][ C3] ? stack_trace_save+0x94/0xd0 [ 46.964206][ C3] ? add_chain_cache+0x248/0x8b0 [ 46.964345][ C3] ? save_trace+0x8f/0x5b0 [ 46.964487][ C3] mark_lock+0x28d/0x3e0 [ 46.964680][ C3] mark_usage+0xd9/0x2a0 [ 46.964785][ C3] __lock_acquire+0x797/0x1570 [ 46.964926][ C3] ? __lock_acquire+0xaf0/0x1570 [ 46.965066][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.965424][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.965581][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.965809][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.965958][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 46.966181][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.966402][ C3] ? lock_acquire+0x32/0xc0 [ 46.966560][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.966789][ C3] _raw_spin_lock+0x30/0x40 [ 46.967014][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.967237][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.967462][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.967799][ C3] call_timer_fn+0x13b/0x230 [ 46.967953][ C3] ? call_timer_fn+0xe8/0x230 [ 46.968105][ C3] ? call_timer_fn+0xe8/0x230 [ 46.968264][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 46.968414][ C3] ? mark_lock+0x38/0x3e0 [ 46.968689][ C3] __run_timers+0x545/0x810 [ 46.968841][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.969108][ C3] ? __pfx___run_timers+0x10/0x10 [ 46.969260][ C3] ? do_raw_spin_lock+0x131/0x270 [ 46.969487][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 46.969642][ C3] ? lock_acquire+0x32/0xc0 [ 46.969797][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 46.969949][ C3] run_timer_softirq+0xe8/0x1b0 [ 46.970178][ C3] __do_softirq+0x1f8/0x5df [ 46.970330][ C3] irq_exit_rcu+0x97/0xc0 [ 46.970447][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.970609][ C3] [ 46.970687][ C3] [ 46.970841][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.971028][ C3] RIP: 0010:default_idle+0xf/0x20 [ 46.971187][ C3] 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 [ 46.971814][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000246 [ 46.972004][ C3] RAX: 00000000000763bb RBX: 1ffff9200002dfc1 RCX: ffffffff9190e9d5 [ 46.972308][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8f2aa4a4 [ 46.972539][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 46.972767][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 46.973068][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 46.973293][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 46.973441][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 46.973599][ C3] default_idle_call+0x6d/0xb0 [ 46.973836][ C3] cpuidle_idle_call+0x1f4/0x280 [ 46.973990][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 46.974140][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 46.974291][ C3] do_idle+0xf9/0x160 [ 46.974479][ C3] cpu_startup_entry+0x54/0x60 [ 46.974636][ C3] start_secondary+0x21c/0x2b0 [ 46.974786][ C3] ? __pfx_start_secondary+0x10/0x10 [ 46.974934][ C3] common_startup_64+0x12c/0x138 [ 46.975095][ C3] [ 231.859263][ T1506] br0: port 2(veth2) entered disabled state [ 231.974682][ T1507] br0: port 1(veth1) entered disabled state [ 232.101954][ T1508] veth2: left allmulticast mode [ 232.102210][ T1508] veth2: left promiscuous mode [ 232.102590][ T1508] br0: port 2(veth2) entered disabled state [ 232.103995][ T1508] veth1: left allmulticast mode [ 232.104209][ T1508] veth1: left promiscuous mode [ 232.105392][ T1508] br0: port 1(veth1) entered disabled state