[ 26.300822][ T237] ip (237) used greatest stack depth: 23744 bytes left [ 33.338779][ T317] br: port 1(veth1) entered blocking state [ 33.339418][ T317] br: port 1(veth1) entered disabled state [ 33.339910][ T317] veth1: entered allmulticast mode [ 33.344317][ T317] veth1: entered promiscuous mode [ 33.348636][ T49] br: port 1(veth1) entered blocking state [ 33.349121][ T49] br: port 1(veth1) entered forwarding state [ 33.451064][ T319] br: port 2(veth3) entered blocking state [ 33.451396][ T319] br: port 2(veth3) entered disabled state [ 33.451728][ T319] veth3: entered allmulticast mode [ 33.460469][ T319] veth3: entered promiscuous mode [ 33.462024][ T50] br: port 2(veth3) entered blocking state [ 33.462308][ T50] br: port 2(veth3) entered forwarding state [ 33.585342][ T320] br: port 3(veth4) entered blocking state [ 33.585632][ T320] br: port 3(veth4) entered disabled state [ 33.585886][ T320] veth4: entered allmulticast mode [ 33.587736][ T320] veth4: entered promiscuous mode [ 33.592049][ T7] br: port 3(veth4) entered blocking state [ 33.592305][ T7] br: port 3(veth4) entered forwarding state [ 48.427873][ C1] [ 48.428046][ C1] ======================================================== [ 48.428313][ C1] WARNING: possible irq lock inversion dependency detected [ 48.428584][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 48.428754][ C1] -------------------------------------------------------- [ 48.429009][ C1] swapper/1/0 just changed the state of lock: [ 48.429214][ C1] ffff888008c52c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.429628][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 48.429871][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 48.429875][ C1] [ 48.429875][ C1] [ 48.429875][ C1] and interrupts could create inverse lock ordering between them. [ 48.429875][ C1] [ 48.430473][ C1] [ 48.430473][ C1] other info that might help us debug this: [ 48.430719][ C1] Chain exists of: [ 48.430719][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 48.430719][ C1] [ 48.431118][ C1] Possible interrupt unsafe locking scenario: [ 48.431118][ C1] [ 48.431366][ C1] CPU0 CPU1 [ 48.431532][ C1] ---- ---- [ 48.431698][ C1] lock(&p->alloc_lock); [ 48.431827][ C1] local_irq_disable(); [ 48.432029][ C1] lock(&br->lock); [ 48.432263][ C1] lock(lweventlist_lock); [ 48.432468][ C1] [ 48.432608][ C1] lock(&br->lock); [ 48.432736][ C1] [ 48.432736][ C1] *** DEADLOCK *** [ 48.432736][ C1] [ 48.432974][ C1] 1 lock held by swapper/1/0: [ 48.433141][ C1] #0: ffffc900001d8d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 48.433494][ C1] [ 48.433494][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 48.433781][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 48.433950][ C1] HARDIRQ-ON-W at: [ 48.434080][ C1] __lock_acquire+0x797/0x1570 [ 48.434298][ C1] lock_acquire.part.0+0xeb/0x330 [ 48.434505][ C1] _raw_spin_lock+0x30/0x40 [ 48.434742][ C1] set_mems_allowed+0x1d/0x210 [ 48.434953][ C1] kernel_init_freeable+0x72/0x310 [ 48.435158][ C1] kernel_init+0x20/0x200 [ 48.435370][ C1] ret_from_fork+0x31/0x70 [ 48.435581][ C1] ret_from_fork_asm+0x1a/0x30 [ 48.435787][ C1] SOFTIRQ-ON-W at: [ 48.435919][ C1] __lock_acquire+0x797/0x1570 [ 48.436126][ C1] lock_acquire.part.0+0xeb/0x330 [ 48.436337][ C1] _raw_spin_lock+0x30/0x40 [ 48.436543][ C1] set_mems_allowed+0x1d/0x210 [ 48.436748][ C1] kernel_init_freeable+0x72/0x310 [ 48.436957][ C1] kernel_init+0x20/0x200 [ 48.437172][ C1] ret_from_fork+0x31/0x70 [ 48.437377][ C1] ret_from_fork_asm+0x1a/0x30 [ 48.437584][ C1] INITIAL USE at: [ 48.437713][ C1] __lock_acquire+0x797/0x1570 [ 48.437919][ C1] lock_acquire.part.0+0xeb/0x330 [ 48.438125][ C1] _raw_spin_lock+0x30/0x40 [ 48.438332][ C1] set_mems_allowed+0x1d/0x210 [ 48.438551][ C1] kernel_init_freeable+0x72/0x310 [ 48.438754][ C1] kernel_init+0x20/0x200 [ 48.438956][ C1] ret_from_fork+0x31/0x70 [ 48.439168][ C1] ret_from_fork_asm+0x1a/0x30 [ 48.439379][ C1] } [ 48.439463][ C1] ... key at: [] __key.387+0x0/0x40 [ 48.439723][ C1] ... acquired at: [ 48.439845][ C1] __lock_acquire+0xaf0/0x1570 [ 48.440019][ C1] lock_acquire.part.0+0xeb/0x330 [ 48.440183][ C1] _raw_spin_lock+0x30/0x40 [ 48.440352][ C1] __get_task_comm+0x27/0x70 [ 48.440522][ C1] ref_tracker_alloc+0x2ee/0x490 [ 48.440695][ C1] linkwatch_fire_event+0x196/0x200 [ 48.440861][ C1] veth_newlink+0x367/0x830 [veth] [ 48.441040][ C1] rtnl_newlink_create+0x341/0x850 [ 48.441208][ C1] __rtnl_newlink+0xac9/0xd80 [ 48.441378][ C1] rtnl_newlink+0x63/0xa0 [ 48.441547][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.441712][ C1] netlink_rcv_skb+0x130/0x360 [ 48.441887][ C1] netlink_unicast+0x449/0x710 [ 48.442054][ C1] netlink_sendmsg+0x723/0xbe0 [ 48.442234][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 48.442402][ C1] ___sys_sendmsg+0xee/0x170 [ 48.442575][ C1] __sys_sendmsg+0xcd/0x170 [ 48.442744][ C1] do_syscall_64+0xc6/0x1e0 [ 48.442909][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.443126][ C1] [ 48.443213][ C1] -> (lweventlist_lock){....}-{2:2} { [ 48.443385][ C1] INITIAL USE at: [ 48.443508][ C1] __lock_acquire+0x797/0x1570 [ 48.443716][ C1] lock_acquire.part.0+0xeb/0x330 [ 48.443936][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 48.444150][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 48.444367][ C1] rtnl_getlink+0x4c9/0x970 [ 48.444587][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.444795][ C1] netlink_rcv_skb+0x130/0x360 [ 48.445015][ C1] netlink_unicast+0x449/0x710 [ 48.445235][ C1] netlink_sendmsg+0x723/0xbe0 [ 48.445449][ C1] __sys_sendto+0x37d/0x410 [ 48.445668][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 48.445887][ C1] do_syscall_64+0xc6/0x1e0 [ 48.446101][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.446360][ C1] } [ 48.446451][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 48.446710][ C1] ... acquired at: [ 48.446840][ C1] __lock_acquire+0xaf0/0x1570 [ 48.447013][ C1] lock_acquire.part.0+0xeb/0x330 [ 48.447187][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 48.447359][ C1] linkwatch_fire_event+0x74/0x200 [ 48.447529][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 48.447785][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 48.448020][ C1] dev_set_mac_address+0x28a/0x410 [ 48.448186][ C1] dev_set_mac_address_user+0x31/0x50 [ 48.448355][ C1] do_setlink+0x17b4/0x21e0 [ 48.448522][ C1] rtnl_setlink+0x1f7/0x310 [ 48.448684][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.448854][ C1] netlink_rcv_skb+0x130/0x360 [ 48.449026][ C1] netlink_unicast+0x449/0x710 [ 48.449195][ C1] netlink_sendmsg+0x723/0xbe0 [ 48.449369][ C1] __sys_sendto+0x37d/0x410 [ 48.449538][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 48.449706][ C1] do_syscall_64+0xc6/0x1e0 [ 48.449877][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.450090][ C1] [ 48.450173][ C1] -> (&br->lock){+.-.}-{2:2} { [ 48.450353][ C1] HARDIRQ-ON-W at: [ 48.450478][ C1] __lock_acquire+0x797/0x1570 [ 48.450703][ C1] lock_acquire.part.0+0xeb/0x330 [ 48.450915][ C1] _raw_spin_lock_bh+0x38/0x50 [ 48.451120][ C1] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 48.451412][ C1] br_dev_open+0xa2/0x120 [bridge] [ 48.451668][ C1] __dev_open+0x221/0x430 [ 48.451883][ C1] __dev_change_flags+0x469/0x6c0 [ 48.452098][ C1] rtnl_configure_link+0x118/0x200 [ 48.452331][ C1] rtnl_newlink_create+0x36e/0x850 [ 48.452545][ C1] __rtnl_newlink+0xac9/0xd80 [ 48.452762][ C1] rtnl_newlink+0x63/0xa0 [ 48.452984][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.453191][ C1] netlink_rcv_skb+0x130/0x360 [ 48.453409][ C1] netlink_unicast+0x449/0x710 [ 48.453624][ C1] netlink_sendmsg+0x723/0xbe0 [ 48.453843][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 48.454055][ C1] ___sys_sendmsg+0xee/0x170 [ 48.454259][ C1] __sys_sendmsg+0xcd/0x170 [ 48.454471][ C1] do_syscall_64+0xc6/0x1e0 [ 48.454681][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.454937][ C1] IN-SOFTIRQ-W at: [ 48.455062][ C1] __lock_acquire+0x797/0x1570 [ 48.455270][ C1] lock_acquire.part.0+0xeb/0x330 [ 48.455480][ C1] _raw_spin_lock+0x30/0x40 [ 48.455692][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.455991][ C1] call_timer_fn+0x13b/0x230 [ 48.456203][ C1] __run_timers+0x545/0x810 [ 48.456421][ C1] run_timer_softirq+0xe8/0x1b0 [ 48.456638][ C1] __do_softirq+0x1f8/0x5df [ 48.456852][ C1] irq_exit_rcu+0x97/0xc0 [ 48.457064][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 48.457319][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 48.457577][ C1] default_idle+0xf/0x20 [ 48.457793][ C1] default_idle_call+0x6d/0xb0 [ 48.458006][ C1] cpuidle_idle_call+0x1f4/0x280 [ 48.458231][ C1] do_idle+0xf9/0x160 [ 48.458406][ C1] cpu_startup_entry+0x54/0x60 [ 48.458621][ C1] start_secondary+0x21c/0x2b0 [ 48.458842][ C1] common_startup_64+0x12c/0x138 [ 48.459071][ C1] INITIAL USE at: [ 48.459200][ C1] __lock_acquire+0x797/0x1570 [ 48.459414][ C1] lock_acquire.part.0+0xeb/0x330 [ 48.459638][ C1] _raw_spin_lock_bh+0x38/0x50 [ 48.459856][ C1] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 48.460153][ C1] br_dev_open+0xa2/0x120 [bridge] [ 48.460408][ C1] __dev_open+0x221/0x430 [ 48.460714][ C1] __dev_change_flags+0x469/0x6c0 [ 48.460929][ C1] rtnl_configure_link+0x118/0x200 [ 48.461145][ C1] rtnl_newlink_create+0x36e/0x850 [ 48.461443][ C1] __rtnl_newlink+0xac9/0xd80 [ 48.461659][ C1] rtnl_newlink+0x63/0xa0 [ 48.461865][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.462160][ C1] netlink_rcv_skb+0x130/0x360 [ 48.462498][ C1] netlink_unicast+0x449/0x710 [ 48.462733][ C1] netlink_sendmsg+0x723/0xbe0 [ 48.462940][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 48.463230][ C1] ___sys_sendmsg+0xee/0x170 [ 48.463457][ C1] __sys_sendmsg+0xcd/0x170 [ 48.463669][ C1] do_syscall_64+0xc6/0x1e0 [ 48.463979][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.464262][ C1] } [ 48.464353][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 48.464747][ C1] ... acquired at: [ 48.465041][ C1] mark_lock+0x28d/0x3e0 [ 48.465220][ C1] mark_usage+0xd9/0x2a0 [ 48.465389][ C1] __lock_acquire+0x797/0x1570 [ 48.465571][ C1] lock_acquire.part.0+0xeb/0x330 [ 48.465839][ C1] _raw_spin_lock+0x30/0x40 [ 48.466015][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.466308][ C1] call_timer_fn+0x13b/0x230 [ 48.466493][ C1] __run_timers+0x545/0x810 [ 48.466735][ C1] run_timer_softirq+0xe8/0x1b0 [ 48.466913][ C1] __do_softirq+0x1f8/0x5df [ 48.467080][ C1] irq_exit_rcu+0x97/0xc0 [ 48.467263][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 48.467576][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 48.467795][ C1] default_idle+0xf/0x20 [ 48.467958][ C1] default_idle_call+0x6d/0xb0 [ 48.468148][ C1] cpuidle_idle_call+0x1f4/0x280 [ 48.468434][ C1] do_idle+0xf9/0x160 [ 48.468583][ C1] cpu_startup_entry+0x54/0x60 [ 48.468762][ C1] start_secondary+0x21c/0x2b0 [ 48.468941][ C1] common_startup_64+0x12c/0x138 [ 48.469115][ C1] [ 48.469212][ C1] [ 48.469212][ C1] stack backtrace: [ 48.469414][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 48.469667][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 48.470117][ C1] Call Trace: [ 48.470241][ C1] [ 48.470326][ C1] dump_stack_lvl+0x82/0xd0 [ 48.470500][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 48.470788][ C1] ? common_startup_64+0x12c/0x138 [ 48.470956][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 48.471164][ C1] ? __pfx_usage_skip+0x10/0x10 [ 48.471353][ C1] ? __pfx_usage_match+0x10/0x10 [ 48.471614][ C1] ? arch_stack_walk+0x8c/0xf0 [ 48.471814][ C1] mark_lock_irq+0x4cd/0xa10 [ 48.471976][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 48.472188][ C1] ? stack_trace_save+0x94/0xd0 [ 48.472459][ C1] ? add_chain_cache+0x248/0x8b0 [ 48.472642][ C1] ? save_trace+0x8f/0x5b0 [ 48.472822][ C1] mark_lock+0x28d/0x3e0 [ 48.472957][ C1] mark_usage+0xd9/0x2a0 [ 48.473106][ C1] __lock_acquire+0x797/0x1570 [ 48.473271][ C1] ? __lock_acquire+0xaf0/0x1570 [ 48.473438][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 48.473719][ C1] lock_acquire.part.0+0xeb/0x330 [ 48.473885][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.474211][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 48.474374][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 48.474540][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.474779][ C1] ? lock_acquire+0x32/0xc0 [ 48.475015][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.475259][ C1] _raw_spin_lock+0x30/0x40 [ 48.475420][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.475733][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.475971][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 48.476269][ C1] call_timer_fn+0x13b/0x230 [ 48.476433][ C1] ? call_timer_fn+0xe8/0x230 [ 48.476675][ C1] ? call_timer_fn+0xe8/0x230 [ 48.476840][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 48.477013][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 48.477184][ C1] __run_timers+0x545/0x810 [ 48.477430][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 48.477714][ C1] ? __pfx___run_timers+0x10/0x10 [ 48.477877][ C1] ? do_raw_spin_lock+0x131/0x270 [ 48.478039][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 48.478288][ C1] ? lock_acquire+0x32/0xc0 [ 48.478454][ C1] ? run_timer_softirq+0xe0/0x1b0 [ 48.478619][ C1] run_timer_softirq+0xe8/0x1b0 [ 48.478780][ C1] __do_softirq+0x1f8/0x5df [ 48.479018][ C1] irq_exit_rcu+0x97/0xc0 [ 48.479147][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 48.479311][ C1] [ 48.479403][ C1] [ 48.479484][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 48.479765][ C1] RIP: 0010:default_idle+0xf/0x20 [ 48.479936][ 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 [ 48.480626][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000242 [ 48.480858][ C1] RAX: 000000000009f0e3 RBX: 1ffff92000029fc1 RCX: ffffffff9a50f9e5 [ 48.481104][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff97eaa4a4 [ 48.481436][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1709c [ 48.481707][ C1] R10: ffff8880360b84e3 R11: ffff8880360ad9b0 R12: 0000000000000000 [ 48.481956][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 48.482219][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 48.482385][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 48.482549][ C1] default_idle_call+0x6d/0xb0 [ 48.482722][ C1] cpuidle_idle_call+0x1f4/0x280 [ 48.482959][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 48.483120][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 48.483285][ C1] do_idle+0xf9/0x160 [ 48.483409][ C1] cpu_startup_entry+0x54/0x60 [ 48.483574][ C1] start_secondary+0x21c/0x2b0 [ 48.483736][ C1] ? __pfx_start_secondary+0x10/0x10 [ 48.483899][ C1] common_startup_64+0x12c/0x138 [ 48.484072][ C1] [ 129.370713][ T653] Mirror/redirect action on [ 167.148196][ T797] br: port 3(veth4) entered disabled state [ 167.148698][ T797] veth4: left allmulticast mode [ 167.148840][ T797] veth4: left promiscuous mode [ 167.149092][ T797] br: port 3(veth4) entered disabled state [ 167.261018][ T798] br: port 2(veth3) entered disabled state [ 167.261579][ T798] veth3: left allmulticast mode [ 167.261740][ T798] veth3: left promiscuous mode [ 167.262006][ T798] br: port 2(veth3) entered disabled state [ 167.373737][ T799] br: port 1(veth1) entered disabled state [ 167.374251][ T799] veth1: left allmulticast mode [ 167.375172][ T799] veth1: left promiscuous mode [ 167.375626][ T799] br: port 1(veth1) entered disabled state