[ 26.076084][ T264] ip (264) used greatest stack depth: 23696 bytes left [ 28.434748][ T286] br1: port 1(veth1) entered blocking state [ 28.435350][ T286] br1: port 1(veth1) entered disabled state [ 28.437581][ T286] veth1: entered allmulticast mode [ 28.439692][ T286] veth1: entered promiscuous mode [ 28.580010][ T285] br1: port 1(veth1) entered blocking state [ 28.580353][ T285] br1: port 1(veth1) entered forwarding state [ 28.704207][ T289] br1: port 2(veth2) entered blocking state [ 28.704483][ T289] br1: port 2(veth2) entered disabled state [ 28.704735][ T289] veth2: entered allmulticast mode [ 28.707633][ T289] veth2: entered promiscuous mode [ 28.841663][ T50] br1: port 2(veth2) entered blocking state [ 28.842087][ T50] br1: port 2(veth2) entered forwarding state [ 35.329190][ T308] GACT probability NOT on [ 43.818041][ C1] [ 43.818208][ C1] ======================================================== [ 43.818420][ C1] WARNING: possible irq lock inversion dependency detected [ 43.818623][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 43.818760][ C1] -------------------------------------------------------- [ 43.818961][ C1] swapper/1/0 just changed the state of lock: [ 43.819150][ C1] ffff88802cbcac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.819544][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 43.819749][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 43.819753][ C1] [ 43.819753][ C1] [ 43.819753][ C1] and interrupts could create inverse lock ordering between them. [ 43.819753][ C1] [ 43.820282][ C1] [ 43.820282][ C1] other info that might help us debug this: [ 43.820483][ C1] Chain exists of: [ 43.820483][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 43.820483][ C1] [ 43.820800][ C1] Possible interrupt unsafe locking scenario: [ 43.820800][ C1] [ 43.821002][ C1] CPU0 CPU1 [ 43.821148][ C1] ---- ---- [ 43.821288][ C1] lock(&p->alloc_lock); [ 43.821392][ C1] local_irq_disable(); [ 43.821563][ C1] lock(&br->lock); [ 43.821741][ C1] lock(lweventlist_lock); [ 43.821914][ C1] [ 43.822022][ C1] lock(&br->lock); [ 43.822134][ C1] [ 43.822134][ C1] *** DEADLOCK *** [ 43.822134][ C1] [ 43.822340][ C1] 1 lock held by swapper/1/0: [ 43.822481][ C1] #0: ffffc900001d8b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 43.822767][ C1] [ 43.822767][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 43.823012][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 43.823170][ C1] HARDIRQ-ON-W at: [ 43.823278][ C1] __lock_acquire+0x797/0x1570 [ 43.823459][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.823631][ C1] _raw_spin_lock+0x30/0x40 [ 43.823815][ C1] set_mems_allowed+0x1d/0x210 [ 43.823990][ C1] kernel_init_freeable+0x72/0x310 [ 43.824187][ C1] kernel_init+0x20/0x200 [ 43.824372][ C1] ret_from_fork+0x31/0x70 [ 43.824548][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.824719][ C1] SOFTIRQ-ON-W at: [ 43.824824][ C1] __lock_acquire+0x797/0x1570 [ 43.825014][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.825194][ C1] _raw_spin_lock+0x30/0x40 [ 43.825365][ C1] set_mems_allowed+0x1d/0x210 [ 43.825541][ C1] kernel_init_freeable+0x72/0x310 [ 43.825714][ C1] kernel_init+0x20/0x200 [ 43.825890][ C1] ret_from_fork+0x31/0x70 [ 43.826069][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.826254][ C1] INITIAL USE at: [ 43.826358][ C1] __lock_acquire+0x797/0x1570 [ 43.826533][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.826709][ C1] _raw_spin_lock+0x30/0x40 [ 43.826881][ C1] set_mems_allowed+0x1d/0x210 [ 43.827059][ C1] kernel_init_freeable+0x72/0x310 [ 43.827242][ C1] kernel_init+0x20/0x200 [ 43.827419][ C1] ret_from_fork+0x31/0x70 [ 43.827595][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.827767][ C1] } [ 43.827841][ C1] ... key at: [] __key.387+0x0/0x40 [ 43.828056][ C1] ... acquired at: [ 43.828175][ C1] __lock_acquire+0xaf0/0x1570 [ 43.828318][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.828456][ C1] _raw_spin_lock+0x30/0x40 [ 43.828597][ C1] __get_task_comm+0x27/0x70 [ 43.828737][ C1] ref_tracker_alloc+0x2ee/0x490 [ 43.828877][ C1] linkwatch_fire_event+0x196/0x200 [ 43.829019][ C1] veth_newlink+0x367/0x830 [veth] [ 43.829185][ C1] rtnl_newlink_create+0x341/0x850 [ 43.829329][ C1] __rtnl_newlink+0xac9/0xd80 [ 43.829475][ C1] rtnl_newlink+0x63/0xa0 [ 43.829615][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.829756][ C1] netlink_rcv_skb+0x130/0x360 [ 43.829895][ C1] netlink_unicast+0x449/0x710 [ 43.830034][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.830182][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 43.830326][ C1] ___sys_sendmsg+0xee/0x170 [ 43.830473][ C1] __sys_sendmsg+0xcd/0x170 [ 43.830613][ C1] do_syscall_64+0xc6/0x1e0 [ 43.830752][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.830925][ C1] [ 43.831001][ C1] -> (lweventlist_lock){....}-{2:2} { [ 43.831151][ C1] INITIAL USE at: [ 43.831257][ C1] __lock_acquire+0x797/0x1570 [ 43.831436][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.831620][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.831794][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 43.831967][ C1] rtnl_getlink+0x4c9/0x970 [ 43.832148][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.832358][ C1] netlink_rcv_skb+0x130/0x360 [ 43.832531][ C1] netlink_unicast+0x449/0x710 [ 43.832710][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.832893][ C1] __sys_sendto+0x37d/0x410 [ 43.833067][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 43.833241][ C1] do_syscall_64+0xc6/0x1e0 [ 43.833423][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.833633][ C1] } [ 43.833703][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 43.833915][ C1] ... acquired at: [ 43.834020][ C1] __lock_acquire+0xaf0/0x1570 [ 43.834159][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.834299][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.834438][ C1] linkwatch_fire_event+0x74/0x200 [ 43.834577][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 43.834800][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 43.835010][ C1] dev_set_mac_address+0x28a/0x410 [ 43.835150][ C1] dev_set_mac_address_user+0x31/0x50 [ 43.835289][ C1] do_setlink+0x17b4/0x21e0 [ 43.835426][ C1] rtnl_setlink+0x1f7/0x310 [ 43.835566][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.835702][ C1] netlink_rcv_skb+0x130/0x360 [ 43.835840][ C1] netlink_unicast+0x449/0x710 [ 43.835979][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.836124][ C1] __sys_sendto+0x37d/0x410 [ 43.836261][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 43.836399][ C1] do_syscall_64+0xc6/0x1e0 [ 43.836538][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.836713][ C1] [ 43.836783][ C1] -> (&br->lock){+.-.}-{2:2} { [ 43.836925][ C1] HARDIRQ-ON-W at: [ 43.837030][ C1] __lock_acquire+0x797/0x1570 [ 43.837207][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.837382][ C1] _raw_spin_lock_bh+0x38/0x50 [ 43.837563][ C1] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 43.837809][ C1] br_dev_open+0xa2/0x120 [bridge] [ 43.838015][ C1] __dev_open+0x221/0x430 [ 43.838191][ C1] __dev_change_flags+0x469/0x6c0 [ 43.838364][ C1] rtnl_configure_link+0x118/0x200 [ 43.838543][ C1] rtnl_newlink_create+0x36e/0x850 [ 43.838719][ C1] __rtnl_newlink+0xac9/0xd80 [ 43.838892][ C1] rtnl_newlink+0x63/0xa0 [ 43.839066][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.839240][ C1] netlink_rcv_skb+0x130/0x360 [ 43.839418][ C1] netlink_unicast+0x449/0x710 [ 43.839603][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.839775][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 43.839949][ C1] ___sys_sendmsg+0xee/0x170 [ 43.840124][ C1] __sys_sendmsg+0xcd/0x170 [ 43.840298][ C1] do_syscall_64+0xc6/0x1e0 [ 43.840468][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.840674][ C1] IN-SOFTIRQ-W at: [ 43.840783][ C1] __lock_acquire+0x797/0x1570 [ 43.840955][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.841128][ C1] _raw_spin_lock+0x30/0x40 [ 43.841300][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.841544][ C1] call_timer_fn+0x13b/0x230 [ 43.841717][ C1] __run_timers+0x545/0x810 [ 43.841891][ C1] timer_expire_remote+0x9b/0xe0 [ 43.842066][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 43.842239][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.842410][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 43.842583][ C1] __do_softirq+0x1f8/0x5df [ 43.842756][ C1] irq_exit_rcu+0x97/0xc0 [ 43.842935][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.843142][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.843352][ C1] default_idle+0xf/0x20 [ 43.843525][ C1] default_idle_call+0x6d/0xb0 [ 43.843702][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.843876][ C1] do_idle+0xf9/0x160 [ 43.844020][ C1] cpu_startup_entry+0x54/0x60 [ 43.844197][ C1] start_secondary+0x21c/0x2b0 [ 43.844374][ C1] common_startup_64+0x12c/0x138 [ 43.844548][ C1] INITIAL USE at: [ 43.844653][ C1] __lock_acquire+0x797/0x1570 [ 43.844826][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.844999][ C1] _raw_spin_lock_bh+0x38/0x50 [ 43.845173][ C1] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 43.845416][ C1] br_dev_open+0xa2/0x120 [bridge] [ 43.845624][ C1] __dev_open+0x221/0x430 [ 43.845796][ C1] __dev_change_flags+0x469/0x6c0 [ 43.845968][ C1] rtnl_configure_link+0x118/0x200 [ 43.846143][ C1] rtnl_newlink_create+0x36e/0x850 [ 43.846317][ C1] __rtnl_newlink+0xac9/0xd80 [ 43.846491][ C1] rtnl_newlink+0x63/0xa0 [ 43.846664][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.846837][ C1] netlink_rcv_skb+0x130/0x360 [ 43.847007][ C1] netlink_unicast+0x449/0x710 [ 43.847184][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.847441][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 43.847615][ C1] ___sys_sendmsg+0xee/0x170 [ 43.847786][ C1] __sys_sendmsg+0xcd/0x170 [ 43.847958][ C1] do_syscall_64+0xc6/0x1e0 [ 43.848215][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.848420][ C1] } [ 43.848489][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 43.848846][ C1] ... acquired at: [ 43.848952][ C1] mark_lock+0x28d/0x3e0 [ 43.849092][ C1] mark_usage+0xd9/0x2a0 [ 43.849230][ C1] __lock_acquire+0x797/0x1570 [ 43.849367][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.849672][ C1] _raw_spin_lock+0x30/0x40 [ 43.849809][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.850016][ C1] call_timer_fn+0x13b/0x230 [ 43.850155][ C1] __run_timers+0x545/0x810 [ 43.850378][ C1] timer_expire_remote+0x9b/0xe0 [ 43.850514][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 43.850651][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.850791][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 43.851015][ C1] __do_softirq+0x1f8/0x5df [ 43.851151][ C1] irq_exit_rcu+0x97/0xc0 [ 43.851287][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.851461][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.851635][ C1] default_idle+0xf/0x20 [ 43.851780][ C1] default_idle_call+0x6d/0xb0 [ 43.851921][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.852059][ C1] do_idle+0xf9/0x160 [ 43.852244][ C1] cpu_startup_entry+0x54/0x60 [ 43.852381][ C1] start_secondary+0x21c/0x2b0 [ 43.852516][ C1] common_startup_64+0x12c/0x138 [ 43.852653][ C1] [ 43.852726][ C1] [ 43.852726][ C1] stack backtrace: [ 43.852974][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 43.853185][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 43.853491][ C1] Call Trace: [ 43.853597][ C1] [ 43.853669][ C1] dump_stack_lvl+0x82/0xd0 [ 43.853811][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 43.853987][ C1] ? common_startup_64+0x12c/0x138 [ 43.854208][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 43.854386][ C1] ? __pfx_usage_skip+0x10/0x10 [ 43.854524][ C1] ? __pfx_usage_match+0x10/0x10 [ 43.854659][ C1] ? arch_stack_walk+0x8c/0xf0 [ 43.854876][ C1] mark_lock_irq+0x4cd/0xa10 [ 43.855013][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 43.855150][ C1] ? stack_trace_save+0x94/0xd0 [ 43.855293][ C1] ? add_chain_cache+0x248/0x8b0 [ 43.855512][ C1] ? save_trace+0x8f/0x5b0 [ 43.855649][ C1] mark_lock+0x28d/0x3e0 [ 43.855754][ C1] mark_usage+0xd9/0x2a0 [ 43.855858][ C1] __lock_acquire+0x797/0x1570 [ 43.856000][ C1] ? __lock_acquire+0xaf0/0x1570 [ 43.856220][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.856461][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.856602][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.856892][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 43.857030][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 43.857168][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.857373][ C1] ? lock_acquire+0x32/0xc0 [ 43.857509][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.857716][ C1] _raw_spin_lock+0x30/0x40 [ 43.857857][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.858064][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.858352][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.858592][ C1] call_timer_fn+0x13b/0x230 [ 43.858728][ C1] ? call_timer_fn+0xe8/0x230 [ 43.858866][ C1] ? call_timer_fn+0xe8/0x230 [ 43.859079][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 43.859220][ C1] ? mark_lock+0x38/0x3e0 [ 43.859330][ C1] __run_timers+0x545/0x810 [ 43.859476][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.859799][ C1] ? __pfx___run_timers+0x10/0x10 [ 43.859936][ C1] ? __lock_release+0x103/0x460 [ 43.860076][ C1] ? do_raw_spin_lock+0x131/0x270 [ 43.860213][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 43.860511][ C1] ? lock_acquire+0x32/0xc0 [ 43.860651][ C1] ? timer_expire_remote+0x93/0xe0 [ 43.860790][ C1] timer_expire_remote+0x9b/0xe0 [ 43.860926][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 43.861147][ C1] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 43.861319][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.861456][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 43.861592][ C1] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 43.861731][ C1] __do_softirq+0x1f8/0x5df [ 43.861874][ C1] irq_exit_rcu+0x97/0xc0 [ 43.861979][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.862115][ C1] [ 43.862186][ C1] [ 43.862256][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.862504][ C1] RIP: 0010:default_idle+0xf/0x20 [ 43.862648][ 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 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 [ 43.863242][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000242 [ 43.863418][ C1] RAX: 000000000008cc51 RBX: 1ffff92000029fc1 RCX: ffffffff93d0f9e5 [ 43.863626][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff916aa4a4 [ 43.863913][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1709c [ 43.864120][ C1] R10: ffff8880360b84e3 R11: ffff8880360ad9b0 R12: 0000000000000000 [ 43.864408][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 43.864614][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 43.864755][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 43.864895][ C1] default_idle_call+0x6d/0xb0 [ 43.865111][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.865247][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 43.865388][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 43.865524][ C1] do_idle+0xf9/0x160 [ 43.865629][ C1] cpu_startup_entry+0x54/0x60 [ 43.865846][ C1] start_secondary+0x21c/0x2b0 [ 43.865981][ C1] ? __pfx_start_secondary+0x10/0x10 [ 43.866119][ C1] common_startup_64+0x12c/0x138 [ 43.866257][ C1] [ 55.829440][ T474] br1: port 2(veth2) entered disabled state [ 55.927299][ T475] veth2: left allmulticast mode [ 55.927556][ T475] veth2: left promiscuous mode [ 55.927817][ T475] br1: port 2(veth2) entered disabled state [ 56.037184][ T476] br1: port 1(veth1) entered disabled state [ 56.160312][ T477] veth1: left allmulticast mode [ 56.160535][ T477] veth1: left promiscuous mode [ 56.160814][ T477] br1: port 1(veth1) entered disabled state