[ 28.866547][ T286] br0: port 1(veth1) entered blocking state [ 28.867019][ T286] br0: port 1(veth1) entered disabled state [ 28.868586][ T286] veth1: entered allmulticast mode [ 28.870606][ T286] veth1: entered promiscuous mode [ 29.007032][ T288] br0: port 2(veth2) entered blocking state [ 29.007854][ T288] br0: port 2(veth2) entered disabled state [ 29.008130][ T288] veth2: entered allmulticast mode [ 29.010128][ T288] veth2: entered promiscuous mode [ 29.246140][ T62] br0: port 1(veth1) entered blocking state [ 29.246613][ T62] br0: port 1(veth1) entered forwarding state [ 39.833178][ T62] br0: port 2(veth2) entered blocking state [ 39.833527][ T62] br0: port 2(veth2) entered forwarding state [ 44.330342][ C3] [ 44.330497][ C3] ======================================================== [ 44.330702][ C3] WARNING: possible irq lock inversion dependency detected [ 44.330904][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 44.331036][ C3] -------------------------------------------------------- [ 44.331229][ C3] swapper/3/0 just changed the state of lock: [ 44.331397][ C3] ffff8880076d2c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.331720][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.331917][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 44.331921][ C3] [ 44.331921][ C3] [ 44.331921][ C3] and interrupts could create inverse lock ordering between them. [ 44.331921][ C3] [ 44.332411][ C3] [ 44.332411][ C3] other info that might help us debug this: [ 44.332623][ C3] Chain exists of: [ 44.332623][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.332623][ C3] [ 44.332925][ C3] Possible interrupt unsafe locking scenario: [ 44.332925][ C3] [ 44.333122][ C3] CPU0 CPU1 [ 44.333253][ C3] ---- ---- [ 44.333391][ C3] lock(&p->alloc_lock); [ 44.333492][ C3] local_irq_disable(); [ 44.333656][ C3] lock(&br->lock); [ 44.333820][ C3] lock(lweventlist_lock); [ 44.333987][ C3] [ 44.334087][ C3] lock(&br->lock); [ 44.334189][ C3] [ 44.334189][ C3] *** DEADLOCK *** [ 44.334189][ C3] [ 44.334388][ C3] 1 lock held by swapper/3/0: [ 44.334522][ C3] #0: ffffc90000288d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.334797][ C3] [ 44.334797][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 44.335028][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.335171][ C3] HARDIRQ-ON-W at: [ 44.335274][ C3] __lock_acquire+0x797/0x1570 [ 44.335454][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.335621][ C3] _raw_spin_lock+0x30/0x40 [ 44.335790][ C3] set_mems_allowed+0x1d/0x210 [ 44.335960][ C3] kernel_init_freeable+0x72/0x310 [ 44.336218][ C3] kernel_init+0x20/0x200 [ 44.336395][ C3] ret_from_fork+0x31/0x70 [ 44.336568][ C3] ret_from_fork_asm+0x1a/0x30 [ 44.336736][ C3] SOFTIRQ-ON-W at: [ 44.336837][ C3] __lock_acquire+0x797/0x1570 [ 44.337007][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.337174][ C3] _raw_spin_lock+0x30/0x40 [ 44.337342][ C3] set_mems_allowed+0x1d/0x210 [ 44.337515][ C3] kernel_init_freeable+0x72/0x310 [ 44.337686][ C3] kernel_init+0x20/0x200 [ 44.337853][ C3] ret_from_fork+0x31/0x70 [ 44.338031][ C3] ret_from_fork_asm+0x1a/0x30 [ 44.338202][ C3] INITIAL USE at: [ 44.338306][ C3] __lock_acquire+0x797/0x1570 [ 44.338472][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.338661][ C3] _raw_spin_lock+0x30/0x40 [ 44.338831][ C3] set_mems_allowed+0x1d/0x210 [ 44.338999][ C3] kernel_init_freeable+0x72/0x310 [ 44.339175][ C3] kernel_init+0x20/0x200 [ 44.339346][ C3] ret_from_fork+0x31/0x70 [ 44.339515][ C3] ret_from_fork_asm+0x1a/0x30 [ 44.339686][ C3] } [ 44.339760][ C3] ... key at: [] __key.387+0x0/0x40 [ 44.339966][ C3] ... acquired at: [ 44.340067][ C3] __lock_acquire+0xaf0/0x1570 [ 44.340204][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.340344][ C3] _raw_spin_lock+0x30/0x40 [ 44.340480][ C3] __get_task_comm+0x27/0x70 [ 44.340614][ C3] ref_tracker_alloc+0x2ee/0x490 [ 44.340752][ C3] linkwatch_fire_event+0x196/0x200 [ 44.340888][ C3] veth_newlink+0x367/0x830 [veth] [ 44.341033][ C3] rtnl_newlink_create+0x341/0x850 [ 44.341167][ C3] __rtnl_newlink+0xac9/0xd80 [ 44.341300][ C3] rtnl_newlink+0x63/0xa0 [ 44.341433][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.341566][ C3] netlink_rcv_skb+0x130/0x360 [ 44.341705][ C3] netlink_unicast+0x449/0x710 [ 44.341844][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.341977][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 44.342113][ C3] ___sys_sendmsg+0xee/0x170 [ 44.342247][ C3] __sys_sendmsg+0xcd/0x170 [ 44.342388][ C3] do_syscall_64+0xc6/0x1e0 [ 44.342522][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.342704][ C3] [ 44.342775][ C3] -> (lweventlist_lock){....}-{2:2} { [ 44.342911][ C3] INITIAL USE at: [ 44.343016][ C3] __lock_acquire+0x797/0x1570 [ 44.343186][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.343362][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.343532][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 44.343700][ C3] rtnl_getlink+0x4c9/0x970 [ 44.343867][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.344041][ C3] netlink_rcv_skb+0x130/0x360 [ 44.344209][ C3] netlink_unicast+0x449/0x710 [ 44.344383][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.344551][ C3] __sys_sendto+0x37d/0x410 [ 44.344722][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 44.344891][ C3] do_syscall_64+0xc6/0x1e0 [ 44.345067][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.345272][ C3] } [ 44.345340][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.345537][ C3] ... acquired at: [ 44.345635][ C3] __lock_acquire+0xaf0/0x1570 [ 44.345772][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.345907][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.346043][ C3] linkwatch_fire_event+0x74/0x200 [ 44.346180][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.346409][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.346609][ C3] dev_set_mac_address+0x28a/0x410 [ 44.346744][ C3] dev_set_mac_address_user+0x31/0x50 [ 44.346884][ C3] do_setlink+0x17b4/0x21e0 [ 44.347020][ C3] rtnl_setlink+0x1f7/0x310 [ 44.347157][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.347289][ C3] netlink_rcv_skb+0x130/0x360 [ 44.347423][ C3] netlink_unicast+0x449/0x710 [ 44.347558][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.347693][ C3] __sys_sendto+0x37d/0x410 [ 44.347838][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 44.347973][ C3] do_syscall_64+0xc6/0x1e0 [ 44.348109][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.348279][ C3] [ 44.348350][ C3] -> (&br->lock){+.-.}-{2:2} { [ 44.348491][ C3] HARDIRQ-ON-W at: [ 44.348601][ C3] __lock_acquire+0x797/0x1570 [ 44.348774][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.348943][ C3] _raw_spin_lock_bh+0x38/0x50 [ 44.349115][ C3] br_set_mac_address+0xd2/0x260 [bridge] [ 44.349353][ C3] dev_set_mac_address+0x28a/0x410 [ 44.349525][ C3] dev_set_mac_address_user+0x31/0x50 [ 44.349693][ C3] do_setlink+0x17b4/0x21e0 [ 44.349861][ C3] rtnl_setlink+0x1f7/0x310 [ 44.350028][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.350203][ C3] netlink_rcv_skb+0x130/0x360 [ 44.350373][ C3] netlink_unicast+0x449/0x710 [ 44.350542][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.350718][ C3] __sys_sendto+0x37d/0x410 [ 44.350886][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 44.351056][ C3] do_syscall_64+0xc6/0x1e0 [ 44.351232][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.351432][ C3] IN-SOFTIRQ-W at: [ 44.351532][ C3] __lock_acquire+0x797/0x1570 [ 44.351702][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.351873][ C3] _raw_spin_lock+0x30/0x40 [ 44.352048][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.352287][ C3] call_timer_fn+0x13b/0x230 [ 44.352457][ C3] __run_timers+0x545/0x810 [ 44.352636][ C3] run_timer_softirq+0xe8/0x1b0 [ 44.352806][ C3] __do_softirq+0x1f8/0x5df [ 44.352976][ C3] irq_exit_rcu+0x97/0xc0 [ 44.353143][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.353343][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.353545][ C3] default_idle+0xf/0x20 [ 44.353718][ C3] default_idle_call+0x6d/0xb0 [ 44.353893][ C3] cpuidle_idle_call+0x1f4/0x280 [ 44.354067][ C3] do_idle+0xf9/0x160 [ 44.354207][ C3] cpu_startup_entry+0x54/0x60 [ 44.354389][ C3] start_secondary+0x21c/0x2b0 [ 44.354558][ C3] common_startup_64+0x12c/0x138 [ 44.354741][ C3] INITIAL USE at: [ 44.354842][ C3] __lock_acquire+0x797/0x1570 [ 44.355012][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.355183][ C3] _raw_spin_lock_bh+0x38/0x50 [ 44.355352][ C3] br_set_mac_address+0xd2/0x260 [bridge] [ 44.355612][ C3] dev_set_mac_address+0x28a/0x410 [ 44.355781][ C3] dev_set_mac_address_user+0x31/0x50 [ 44.355949][ C3] do_setlink+0x17b4/0x21e0 [ 44.356116][ C3] rtnl_setlink+0x1f7/0x310 [ 44.356294][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.356461][ C3] netlink_rcv_skb+0x130/0x360 [ 44.356631][ C3] netlink_unicast+0x449/0x710 [ 44.356807][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.356976][ C3] __sys_sendto+0x37d/0x410 [ 44.357144][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 44.357312][ C3] do_syscall_64+0xc6/0x1e0 [ 44.357482][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.357682][ C3] } [ 44.357750][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.358016][ C3] ... acquired at: [ 44.358116][ C3] mark_lock+0x28d/0x3e0 [ 44.358250][ C3] mark_usage+0xd9/0x2a0 [ 44.358391][ C3] __lock_acquire+0x797/0x1570 [ 44.358538][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.358675][ C3] _raw_spin_lock+0x30/0x40 [ 44.358886][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.359090][ C3] call_timer_fn+0x13b/0x230 [ 44.359225][ C3] __run_timers+0x545/0x810 [ 44.359359][ C3] run_timer_softirq+0xe8/0x1b0 [ 44.359571][ C3] __do_softirq+0x1f8/0x5df [ 44.359703][ C3] irq_exit_rcu+0x97/0xc0 [ 44.359835][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.360010][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.360256][ C3] default_idle+0xf/0x20 [ 44.360389][ C3] default_idle_call+0x6d/0xb0 [ 44.360521][ C3] cpuidle_idle_call+0x1f4/0x280 [ 44.360654][ C3] do_idle+0xf9/0x160 [ 44.360836][ C3] cpu_startup_entry+0x54/0x60 [ 44.360969][ C3] start_secondary+0x21c/0x2b0 [ 44.361103][ C3] common_startup_64+0x12c/0x138 [ 44.361240][ C3] [ 44.361307][ C3] [ 44.361307][ C3] stack backtrace: [ 44.361545][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 44.361744][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.362118][ C3] Call Trace: [ 44.362225][ C3] [ 44.362296][ C3] dump_stack_lvl+0x82/0xd0 [ 44.362441][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.362607][ C3] ? common_startup_64+0x12c/0x138 [ 44.362823][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.362988][ C3] ? __pfx_usage_skip+0x10/0x10 [ 44.363125][ C3] ? __pfx_usage_match+0x10/0x10 [ 44.363259][ C3] ? arch_stack_walk+0x8c/0xf0 [ 44.363474][ C3] mark_lock_irq+0x4cd/0xa10 [ 44.363608][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.363754][ C3] ? stack_trace_save+0x94/0xd0 [ 44.363888][ C3] ? add_chain_cache+0x248/0x8b0 [ 44.364098][ C3] ? save_trace+0x8f/0x5b0 [ 44.364240][ C3] mark_lock+0x28d/0x3e0 [ 44.364341][ C3] mark_usage+0xd9/0x2a0 [ 44.364442][ C3] __lock_acquire+0x797/0x1570 [ 44.364577][ C3] ? __lock_acquire+0xaf0/0x1570 [ 44.364866][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.365103][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.365236][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.365513][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.365648][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 44.365786][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.365987][ C3] ? lock_acquire+0x32/0xc0 [ 44.366195][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.366400][ C3] _raw_spin_lock+0x30/0x40 [ 44.366533][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.366734][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.367021][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.367254][ C3] call_timer_fn+0x13b/0x230 [ 44.367391][ C3] ? call_timer_fn+0xe8/0x230 [ 44.367525][ C3] ? call_timer_fn+0xe8/0x230 [ 44.367736][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 44.367871][ C3] ? mark_lock+0x38/0x3e0 [ 44.367976][ C3] __run_timers+0x545/0x810 [ 44.368109][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.368426][ C3] ? __pfx___run_timers+0x10/0x10 [ 44.368574][ C3] ? do_raw_spin_lock+0x131/0x270 [ 44.368709][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.368842][ C3] ? lock_acquire+0x32/0xc0 [ 44.369055][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 44.369196][ C3] run_timer_softirq+0xe8/0x1b0 [ 44.369329][ C3] __do_softirq+0x1f8/0x5df [ 44.369462][ C3] irq_exit_rcu+0x97/0xc0 [ 44.369640][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.369773][ C3] [ 44.369842][ C3] [ 44.369909][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.370082][ C3] RIP: 0010:default_idle+0xf/0x20 [ 44.370300][ 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 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 [ 44.370782][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000246 [ 44.371028][ C3] RAX: 000000000006df65 RBX: 1ffff9200002dfc1 RCX: ffffffffb1f0f9e5 [ 44.371227][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffaf8aa4a4 [ 44.371435][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 44.371712][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 44.371913][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 44.372112][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.372328][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 44.372481][ C3] default_idle_call+0x6d/0xb0 [ 44.372625][ C3] cpuidle_idle_call+0x1f4/0x280 [ 44.372759][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.372969][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.373107][ C3] do_idle+0xf9/0x160 [ 44.373212][ C3] cpu_startup_entry+0x54/0x60 [ 44.373360][ C3] start_secondary+0x21c/0x2b0 [ 44.373494][ C3] ? __pfx_start_secondary+0x10/0x10 [ 44.373705][ C3] common_startup_64+0x12c/0x138 [ 44.373844][ C3] [ 45.514001][ T304] GACT probability NOT on [ 47.357958][ T311] br0: port 2(veth2) entered disabled state [ 47.648378][ T51] br0: port 2(veth2) entered blocking state [ 47.648651][ T51] br0: port 2(veth2) entered forwarding state [ 54.681308][ T328] br0: port 1(veth1) entered disabled state [ 54.776429][ T329] br0: port 2(veth2) entered disabled state [ 54.883374][ T331] veth2: left allmulticast mode [ 54.883711][ T331] veth2: left promiscuous mode [ 54.884088][ T331] br0: port 2(veth2) entered disabled state [ 54.886292][ T331] veth1: left allmulticast mode [ 54.886520][ T331] veth1: left promiscuous mode [ 54.886889][ T331] br0: port 1(veth1) entered disabled state