[ 28.740758][ T288] br0: port 1(veth1) entered blocking state [ 28.741152][ T288] br0: port 1(veth1) entered disabled state [ 28.741484][ T288] veth1: entered allmulticast mode [ 28.743459][ T288] veth1: entered promiscuous mode [ 28.750604][ T288] ip (288) used greatest stack depth: 24000 bytes left [ 28.866537][ T290] br0: port 2(veth2) entered blocking state [ 28.866789][ T290] br0: port 2(veth2) entered disabled state [ 28.867026][ T290] veth2: entered allmulticast mode [ 28.868835][ T290] veth2: entered promiscuous mode [ 29.109396][ T196] br0: port 1(veth1) entered blocking state [ 29.109754][ T196] br0: port 1(veth1) entered forwarding state [ 29.235612][ T7] br0: port 2(veth2) entered blocking state [ 29.236000][ T7] br0: port 2(veth2) entered forwarding state [ 41.069388][ T316] GACT probability NOT on [ 44.364556][ C0] [ 44.364718][ C0] ======================================================== [ 44.364968][ C0] WARNING: possible irq lock inversion dependency detected [ 44.365184][ C0] 6.9.0-rc1-virtme #1 Not tainted [ 44.365337][ C0] -------------------------------------------------------- [ 44.365552][ C0] swapper/0/0 just changed the state of lock: [ 44.365737][ C0] ffff8880267f2c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.366120][ C0] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.366352][ C0] (&p->alloc_lock){+.+.}-{2:2} [ 44.366357][ C0] [ 44.366357][ C0] [ 44.366357][ C0] and interrupts could create inverse lock ordering between them. [ 44.366357][ C0] [ 44.366911][ C0] [ 44.366911][ C0] other info that might help us debug this: [ 44.367131][ C0] Chain exists of: [ 44.367131][ C0] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.367131][ C0] [ 44.367458][ C0] Possible interrupt unsafe locking scenario: [ 44.367458][ C0] [ 44.367673][ C0] CPU0 CPU1 [ 44.367827][ C0] ---- ---- [ 44.367978][ C0] lock(&p->alloc_lock); [ 44.368087][ C0] local_irq_disable(); [ 44.368265][ C0] lock(&br->lock); [ 44.368447][ C0] lock(lweventlist_lock); [ 44.368641][ C0] [ 44.368752][ C0] lock(&br->lock); [ 44.368869][ C0] [ 44.368869][ C0] *** DEADLOCK *** [ 44.368869][ C0] [ 44.369085][ C0] 1 lock held by swapper/0/0: [ 44.369232][ C0] #0: ffffc90000007d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.369544][ C0] [ 44.369544][ C0] the shortest dependencies between 2nd lock and 1st lock: [ 44.369792][ C0] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.369945][ C0] HARDIRQ-ON-W at: [ 44.370063][ C0] __lock_acquire+0x797/0x1570 [ 44.370254][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.370436][ C0] _raw_spin_lock+0x30/0x40 [ 44.370621][ C0] set_mems_allowed+0x1d/0x210 [ 44.370816][ C0] kernel_init_freeable+0x72/0x310 [ 44.371001][ C0] kernel_init+0x20/0x200 [ 44.371192][ C0] ret_from_fork+0x31/0x70 [ 44.371377][ C0] ret_from_fork_asm+0x1a/0x30 [ 44.371565][ C0] SOFTIRQ-ON-W at: [ 44.371675][ C0] __lock_acquire+0x797/0x1570 [ 44.371861][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.372043][ C0] _raw_spin_lock+0x30/0x40 [ 44.372237][ C0] set_mems_allowed+0x1d/0x210 [ 44.372422][ C0] kernel_init_freeable+0x72/0x310 [ 44.372605][ C0] kernel_init+0x20/0x200 [ 44.372804][ C0] ret_from_fork+0x31/0x70 [ 44.372987][ C0] ret_from_fork_asm+0x1a/0x30 [ 44.373171][ C0] INITIAL USE at: [ 44.373285][ C0] __lock_acquire+0x797/0x1570 [ 44.373476][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.373658][ C0] _raw_spin_lock+0x30/0x40 [ 44.373851][ C0] set_mems_allowed+0x1d/0x210 [ 44.374033][ C0] kernel_init_freeable+0x72/0x310 [ 44.374215][ C0] kernel_init+0x20/0x200 [ 44.374400][ C0] ret_from_fork+0x31/0x70 [ 44.374590][ C0] ret_from_fork_asm+0x1a/0x30 [ 44.374782][ C0] } [ 44.374859][ C0] ... key at: [] __key.387+0x0/0x40 [ 44.375081][ C0] ... acquired at: [ 44.375190][ C0] __lock_acquire+0xaf0/0x1570 [ 44.375340][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.375487][ C0] _raw_spin_lock+0x30/0x40 [ 44.375646][ C0] __get_task_comm+0x27/0x70 [ 44.375796][ C0] ref_tracker_alloc+0x2ee/0x490 [ 44.375942][ C0] linkwatch_fire_event+0x196/0x200 [ 44.376090][ C0] veth_newlink+0x367/0x830 [veth] [ 44.376254][ C0] rtnl_newlink_create+0x341/0x850 [ 44.376406][ C0] __rtnl_newlink+0xac9/0xd80 [ 44.376554][ C0] rtnl_newlink+0x63/0xa0 [ 44.376699][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.376851][ C0] netlink_rcv_skb+0x130/0x360 [ 44.377020][ C0] netlink_unicast+0x449/0x710 [ 44.377165][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.377311][ C0] ____sys_sendmsg+0x7b2/0xa10 [ 44.377459][ C0] ___sys_sendmsg+0xee/0x170 [ 44.377616][ C0] __sys_sendmsg+0xcd/0x170 [ 44.377762][ C0] do_syscall_64+0xc6/0x1e0 [ 44.377916][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.378098][ C0] [ 44.378181][ C0] -> (lweventlist_lock){....}-{2:2} { [ 44.378332][ C0] INITIAL USE at: [ 44.378441][ C0] __lock_acquire+0x797/0x1570 [ 44.378626][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.378817][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.378999][ C0] linkwatch_sync_dev+0x29/0x1f0 [ 44.379184][ C0] rtnl_getlink+0x4c9/0x970 [ 44.379369][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.379558][ C0] netlink_rcv_skb+0x130/0x360 [ 44.379739][ C0] netlink_unicast+0x449/0x710 [ 44.379938][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.380126][ C0] __sys_sendto+0x37d/0x410 [ 44.380315][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.380503][ C0] do_syscall_64+0xc6/0x1e0 [ 44.380687][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.380910][ C0] } [ 44.380983][ C0] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.381211][ C0] ... acquired at: [ 44.381321][ C0] __lock_acquire+0xaf0/0x1570 [ 44.381474][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.381624][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.381769][ C0] linkwatch_fire_event+0x74/0x200 [ 44.381914][ C0] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.382135][ C0] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.382356][ C0] dev_set_mac_address+0x28a/0x410 [ 44.382501][ C0] dev_set_mac_address_user+0x31/0x50 [ 44.382649][ C0] do_setlink+0x17b4/0x21e0 [ 44.382798][ C0] rtnl_setlink+0x1f7/0x310 [ 44.382942][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.383097][ C0] netlink_rcv_skb+0x130/0x360 [ 44.383242][ C0] netlink_unicast+0x449/0x710 [ 44.383390][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.383537][ C0] __sys_sendto+0x37d/0x410 [ 44.383682][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.383834][ C0] do_syscall_64+0xc6/0x1e0 [ 44.383985][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.384168][ C0] [ 44.384241][ C0] -> (&br->lock){+.-.}-{2:2} { [ 44.384393][ C0] HARDIRQ-ON-W at: [ 44.384510][ C0] __lock_acquire+0x797/0x1570 [ 44.384697][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.384889][ C0] _raw_spin_lock_bh+0x38/0x50 [ 44.385075][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 44.385336][ C0] dev_set_mac_address+0x28a/0x410 [ 44.385523][ C0] dev_set_mac_address_user+0x31/0x50 [ 44.385704][ C0] do_setlink+0x17b4/0x21e0 [ 44.385897][ C0] rtnl_setlink+0x1f7/0x310 [ 44.386086][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.386272][ C0] netlink_rcv_skb+0x130/0x360 [ 44.386462][ C0] netlink_unicast+0x449/0x710 [ 44.386665][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.386855][ C0] __sys_sendto+0x37d/0x410 [ 44.387038][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.387221][ C0] do_syscall_64+0xc6/0x1e0 [ 44.387411][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.387632][ C0] IN-SOFTIRQ-W at: [ 44.387756][ C0] __lock_acquire+0x797/0x1570 [ 44.387972][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.388229][ C0] _raw_spin_lock+0x30/0x40 [ 44.388492][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.388778][ C0] call_timer_fn+0x13b/0x230 [ 44.388965][ C0] __run_timers+0x545/0x810 [ 44.389156][ C0] run_timer_softirq+0xe8/0x1b0 [ 44.389343][ C0] __do_softirq+0x1f8/0x5df [ 44.389527][ C0] irq_exit_rcu+0x97/0xc0 [ 44.389725][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.389942][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.390166][ C0] default_idle+0xf/0x20 [ 44.390354][ C0] default_idle_call+0x6d/0xb0 [ 44.390539][ C0] cpuidle_idle_call+0x1f4/0x280 [ 44.390729][ C0] do_idle+0xf9/0x160 [ 44.390877][ C0] cpu_startup_entry+0x54/0x60 [ 44.391057][ C0] rest_init+0x14f/0x260 [ 44.391240][ C0] start_kernel+0x318/0x3d0 [ 44.391423][ C0] x86_64_start_reservations+0x18/0x30 [ 44.391611][ C0] x86_64_start_kernel+0xba/0x110 [ 44.391798][ C0] common_startup_64+0x12c/0x138 [ 44.392076][ C0] INITIAL USE at: [ 44.392188][ C0] __lock_acquire+0x797/0x1570 [ 44.392378][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.392564][ C0] _raw_spin_lock_bh+0x38/0x50 [ 44.392943][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 44.393206][ C0] dev_set_mac_address+0x28a/0x410 [ 44.393389][ C0] dev_set_mac_address_user+0x31/0x50 [ 44.393674][ C0] do_setlink+0x17b4/0x21e0 [ 44.393859][ C0] rtnl_setlink+0x1f7/0x310 [ 44.394043][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.394324][ C0] netlink_rcv_skb+0x130/0x360 [ 44.394520][ C0] netlink_unicast+0x449/0x710 [ 44.394712][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.394912][ C0] __sys_sendto+0x37d/0x410 [ 44.395189][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.395379][ C0] do_syscall_64+0xc6/0x1e0 [ 44.395577][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.395901][ C0] } [ 44.395980][ C0] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.396271][ C0] ... acquired at: [ 44.396381][ C0] mark_lock+0x28d/0x3e0 [ 44.396623][ C0] mark_usage+0xd9/0x2a0 [ 44.396782][ C0] __lock_acquire+0x797/0x1570 [ 44.396929][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.397076][ C0] _raw_spin_lock+0x30/0x40 [ 44.397321][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.397547][ C0] call_timer_fn+0x13b/0x230 [ 44.397712][ C0] __run_timers+0x545/0x810 [ 44.397862][ C0] run_timer_softirq+0xe8/0x1b0 [ 44.398101][ C0] __do_softirq+0x1f8/0x5df [ 44.398250][ C0] irq_exit_rcu+0x97/0xc0 [ 44.398396][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.398583][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.398860][ C0] default_idle+0xf/0x20 [ 44.399013][ C0] default_idle_call+0x6d/0xb0 [ 44.399158][ C0] cpuidle_idle_call+0x1f4/0x280 [ 44.399306][ C0] do_idle+0xf9/0x160 [ 44.399415][ C0] cpu_startup_entry+0x54/0x60 [ 44.399658][ C0] rest_init+0x14f/0x260 [ 44.399804][ C0] start_kernel+0x318/0x3d0 [ 44.399954][ C0] x86_64_start_reservations+0x18/0x30 [ 44.400099][ C0] x86_64_start_kernel+0xba/0x110 [ 44.400248][ C0] common_startup_64+0x12c/0x138 [ 44.400394][ C0] [ 44.400467][ C0] [ 44.400467][ C0] stack backtrace: [ 44.400647][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc1-virtme #1 [ 44.400870][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.401195][ C0] Call Trace: [ 44.401305][ C0] [ 44.401384][ C0] dump_stack_lvl+0x82/0xd0 [ 44.401636][ C0] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.401817][ C0] ? common_startup_64+0x12c/0x138 [ 44.401966][ C0] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.402145][ C0] ? __pfx_usage_skip+0x10/0x10 [ 44.402295][ C0] ? __pfx_usage_match+0x10/0x10 [ 44.402439][ C0] ? arch_stack_walk+0x8c/0xf0 [ 44.402588][ C0] mark_lock_irq+0x4cd/0xa10 [ 44.402739][ C0] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.402884][ C0] ? stack_trace_save+0x94/0xd0 [ 44.403030][ C0] ? add_chain_cache+0x248/0x8b0 [ 44.403179][ C0] ? save_trace+0x8f/0x5b0 [ 44.403326][ C0] mark_lock+0x28d/0x3e0 [ 44.403537][ C0] mark_usage+0xd9/0x2a0 [ 44.403648][ C0] __lock_acquire+0x797/0x1570 [ 44.403795][ C0] ? __lock_acquire+0xaf0/0x1570 [ 44.403941][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.404199][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.404343][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.404560][ C0] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.404706][ C0] ? trace_lock_acquire+0x135/0x1c0 [ 44.404956][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.405177][ C0] ? lock_acquire+0x32/0xc0 [ 44.405327][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.405552][ C0] _raw_spin_lock+0x30/0x40 [ 44.405789][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.406005][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.406223][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.406572][ C0] call_timer_fn+0x13b/0x230 [ 44.406719][ C0] ? call_timer_fn+0xe8/0x230 [ 44.406869][ C0] ? call_timer_fn+0xe8/0x230 [ 44.407019][ C0] ? __pfx_call_timer_fn+0x10/0x10 [ 44.407164][ C0] ? mark_lock+0x38/0x3e0 [ 44.407279][ C0] __run_timers+0x545/0x810 [ 44.407424][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.407681][ C0] ? __pfx___run_timers+0x10/0x10 [ 44.407827][ C0] ? do_raw_spin_lock+0x131/0x270 [ 44.407972][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.408119][ C0] ? lock_acquire+0x32/0xc0 [ 44.408265][ C0] ? run_timer_softirq+0xe0/0x1b0 [ 44.408411][ C0] run_timer_softirq+0xe8/0x1b0 [ 44.408652][ C0] __do_softirq+0x1f8/0x5df [ 44.408798][ C0] irq_exit_rcu+0x97/0xc0 [ 44.408912][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.409058][ C0] [ 44.409140][ C0] [ 44.409214][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.409395][ C0] RIP: 0010:default_idle+0xf/0x20 [ 44.409551][ C0] 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 [ 44.410071][ C0] RSP: 0018:ffffffff90007e00 EFLAGS: 00000242 [ 44.410258][ C0] RAX: 000000000008a5bf RBX: 1ffffffff2000fc2 RCX: ffffffff8f10e9d5 [ 44.410572][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8caaa4a4 [ 44.410795][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0709c [ 44.411012][ C0] R10: ffff8880360384e3 R11: ffff88803602d9b0 R12: 0000000000000000 [ 44.411231][ C0] R13: ffffffff9001d000 R14: dffffc0000000000 R15: 0000000000014770 [ 44.411489][ C0] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.411636][ C0] ? cpuidle_idle_call+0x1f4/0x280 [ 44.411786][ C0] default_idle_call+0x6d/0xb0 [ 44.411932][ C0] cpuidle_idle_call+0x1f4/0x280 [ 44.412076][ C0] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.412228][ C0] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.412377][ C0] do_idle+0xf9/0x160 [ 44.412582][ C0] cpu_startup_entry+0x54/0x60 [ 44.412728][ C0] rest_init+0x14f/0x260 [ 44.412839][ C0] start_kernel+0x318/0x3d0 [ 44.412986][ C0] x86_64_start_reservations+0x18/0x30 [ 44.413131][ C0] x86_64_start_kernel+0xba/0x110 [ 44.413276][ C0] common_startup_64+0x12c/0x138 [ 44.413424][ C0] [ 215.032798][ T1506] br0: port 2(veth2) entered disabled state [ 215.145575][ T1507] br0: port 1(veth1) entered disabled state [ 215.237866][ T1509] veth2: left allmulticast mode [ 215.238059][ T1509] veth2: left promiscuous mode [ 215.238314][ T1509] br0: port 2(veth2) entered disabled state [ 215.239228][ T1509] veth1: left allmulticast mode [ 215.239361][ T1509] veth1: left promiscuous mode [ 215.239610][ T1509] br0: port 1(veth1) entered disabled state