[ 28.326861][ T236] ip (236) used greatest stack depth: 23568 bytes left [ 35.552678][ T316] br: port 1(veth1) entered blocking state [ 35.553464][ T316] br: port 1(veth1) entered disabled state [ 35.554764][ T316] veth1: entered allmulticast mode [ 35.556737][ T316] veth1: entered promiscuous mode [ 35.559003][ T49] br: port 1(veth1) entered blocking state [ 35.559357][ T49] br: port 1(veth1) entered forwarding state [ 35.718754][ T318] br: port 2(veth3) entered blocking state [ 35.720018][ T318] br: port 2(veth3) entered disabled state [ 35.720361][ T318] veth3: entered allmulticast mode [ 35.722479][ T318] veth3: entered promiscuous mode [ 35.724642][ T7] br: port 2(veth3) entered blocking state [ 35.724874][ T7] br: port 2(veth3) entered forwarding state [ 35.854713][ T319] br: port 3(veth4) entered blocking state [ 35.855127][ T319] br: port 3(veth4) entered disabled state [ 35.856024][ T319] veth4: entered allmulticast mode [ 35.858023][ T319] veth4: entered promiscuous mode [ 35.859405][ T24] br: port 3(veth4) entered blocking state [ 35.859680][ T24] br: port 3(veth4) entered forwarding state [ 51.020038][ C1] [ 51.020252][ C1] ======================================================== [ 51.020580][ C1] WARNING: possible irq lock inversion dependency detected [ 51.020871][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 51.021021][ C1] -------------------------------------------------------- [ 51.021244][ C1] swapper/1/0 just changed the state of lock: [ 51.021431][ C1] ffff88800619ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 51.021929][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 51.022266][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 51.022273][ C1] [ 51.022273][ C1] [ 51.022273][ C1] and interrupts could create inverse lock ordering between them. [ 51.022273][ C1] [ 51.022977][ C1] [ 51.022977][ C1] other info that might help us debug this: [ 51.023321][ C1] Chain exists of: [ 51.023321][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 51.023321][ C1] [ 51.023740][ C1] Possible interrupt unsafe locking scenario: [ 51.023740][ C1] [ 51.024038][ C1] CPU0 CPU1 [ 51.024257][ C1] ---- ---- [ 51.024478][ C1] lock(&p->alloc_lock); [ 51.024659][ C1] local_irq_disable(); [ 51.024939][ C1] lock(&br->lock); [ 51.025218][ C1] lock(lweventlist_lock); [ 51.025498][ C1] [ 51.025666][ C1] lock(&br->lock); [ 51.025838][ C1] [ 51.025838][ C1] *** DEADLOCK *** [ 51.025838][ C1] [ 51.026168][ C1] 1 lock held by swapper/1/0: [ 51.026398][ C1] #0: ffffc900001d8d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 51.026870][ C1] [ 51.026870][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 51.027258][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 51.027509][ C1] HARDIRQ-ON-W at: [ 51.027686][ C1] __lock_acquire+0x797/0x1570 [ 51.027956][ C1] lock_acquire.part.0+0xeb/0x330 [ 51.028255][ C1] _raw_spin_lock+0x30/0x40 [ 51.028495][ C1] set_mems_allowed+0x1d/0x210 [ 51.028734][ C1] kernel_init_freeable+0x72/0x310 [ 51.028946][ C1] kernel_init+0x20/0x200 [ 51.029211][ C1] ret_from_fork+0x31/0x70 [ 51.029450][ C1] ret_from_fork_asm+0x1a/0x30 [ 51.029649][ C1] SOFTIRQ-ON-W at: [ 51.029762][ C1] __lock_acquire+0x797/0x1570 [ 51.029951][ C1] lock_acquire.part.0+0xeb/0x330 [ 51.030153][ C1] _raw_spin_lock+0x30/0x40 [ 51.030427][ C1] set_mems_allowed+0x1d/0x210 [ 51.030706][ C1] kernel_init_freeable+0x72/0x310 [ 51.031004][ C1] kernel_init+0x20/0x200 [ 51.031285][ C1] ret_from_fork+0x31/0x70 [ 51.031567][ C1] ret_from_fork_asm+0x1a/0x30 [ 51.031847][ C1] INITIAL USE at: [ 51.032018][ C1] __lock_acquire+0x797/0x1570 [ 51.032298][ C1] lock_acquire.part.0+0xeb/0x330 [ 51.032582][ C1] _raw_spin_lock+0x30/0x40 [ 51.032868][ C1] set_mems_allowed+0x1d/0x210 [ 51.033150][ C1] kernel_init_freeable+0x72/0x310 [ 51.033428][ C1] kernel_init+0x20/0x200 [ 51.033707][ C1] ret_from_fork+0x31/0x70 [ 51.033990][ C1] ret_from_fork_asm+0x1a/0x30 [ 51.034276][ C1] } [ 51.034398][ C1] ... key at: [] __key.387+0x0/0x40 [ 51.034734][ C1] ... acquired at: [ 51.034902][ C1] __lock_acquire+0xaf0/0x1570 [ 51.035127][ C1] lock_acquire.part.0+0xeb/0x330 [ 51.035355][ C1] _raw_spin_lock+0x30/0x40 [ 51.035581][ C1] __get_task_comm+0x27/0x70 [ 51.035811][ C1] ref_tracker_alloc+0x2ee/0x490 [ 51.036049][ C1] linkwatch_fire_event+0x196/0x200 [ 51.036280][ C1] veth_newlink+0x367/0x830 [veth] [ 51.036517][ C1] rtnl_newlink_create+0x341/0x850 [ 51.036740][ C1] __rtnl_newlink+0xac9/0xd80 [ 51.036972][ C1] rtnl_newlink+0x63/0xa0 [ 51.037138][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 51.037300][ C1] netlink_rcv_skb+0x130/0x360 [ 51.037451][ C1] netlink_unicast+0x449/0x710 [ 51.037611][ C1] netlink_sendmsg+0x723/0xbe0 [ 51.037795][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 51.038023][ C1] ___sys_sendmsg+0xee/0x170 [ 51.038194][ C1] __sys_sendmsg+0xcd/0x170 [ 51.038376][ C1] do_syscall_64+0xc6/0x1e0 [ 51.038579][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 51.038781][ C1] [ 51.038882][ C1] -> (lweventlist_lock){....}-{2:2} { [ 51.039076][ C1] INITIAL USE at: [ 51.039222][ C1] __lock_acquire+0x797/0x1570 [ 51.039496][ C1] lock_acquire.part.0+0xeb/0x330 [ 51.039778][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 51.040051][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 51.040319][ C1] rtnl_getlink+0x4c9/0x970 [ 51.040587][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 51.040878][ C1] netlink_rcv_skb+0x130/0x360 [ 51.041143][ C1] netlink_unicast+0x449/0x710 [ 51.041425][ C1] netlink_sendmsg+0x723/0xbe0 [ 51.041702][ C1] __sys_sendto+0x37d/0x410 [ 51.041998][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 51.042280][ C1] do_syscall_64+0xc6/0x1e0 [ 51.042572][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 51.042914][ C1] } [ 51.043033][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 51.043370][ C1] ... acquired at: [ 51.043539][ C1] __lock_acquire+0xaf0/0x1570 [ 51.043772][ C1] lock_acquire.part.0+0xeb/0x330 [ 51.043997][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 51.044230][ C1] linkwatch_fire_event+0x74/0x200 [ 51.044455][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 51.044803][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 51.045153][ C1] dev_set_mac_address+0x28a/0x410 [ 51.045373][ C1] dev_set_mac_address_user+0x31/0x50 [ 51.045576][ C1] do_setlink+0x17b4/0x21e0 [ 51.045798][ C1] rtnl_setlink+0x1f7/0x310 [ 51.046001][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 51.046154][ C1] netlink_rcv_skb+0x130/0x360 [ 51.046308][ C1] netlink_unicast+0x449/0x710 [ 51.046455][ C1] netlink_sendmsg+0x723/0xbe0 [ 51.046612][ C1] __sys_sendto+0x37d/0x410 [ 51.046763][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 51.046958][ C1] do_syscall_64+0xc6/0x1e0 [ 51.047131][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 51.047421][ C1] [ 51.047534][ C1] -> (&br->lock){+.-.}-{2:2} { [ 51.047763][ C1] HARDIRQ-ON-W at: [ 51.047924][ C1] __lock_acquire+0x797/0x1570 [ 51.048210][ C1] lock_acquire.part.0+0xeb/0x330 [ 51.048488][ C1] _raw_spin_lock_bh+0x38/0x50 [ 51.048772][ C1] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 51.049181][ C1] br_dev_open+0xa2/0x120 [bridge] [ 51.049533][ C1] __dev_open+0x221/0x430 [ 51.049820][ C1] __dev_change_flags+0x469/0x6c0 [ 51.050098][ C1] rtnl_configure_link+0x118/0x200 [ 51.050380][ C1] rtnl_newlink_create+0x36e/0x850 [ 51.050653][ C1] __rtnl_newlink+0xac9/0xd80 [ 51.050927][ C1] rtnl_newlink+0x63/0xa0 [ 51.051201][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 51.051482][ C1] netlink_rcv_skb+0x130/0x360 [ 51.051767][ C1] netlink_unicast+0x449/0x710 [ 51.052038][ C1] netlink_sendmsg+0x723/0xbe0 [ 51.052312][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 51.052588][ C1] ___sys_sendmsg+0xee/0x170 [ 51.052837][ C1] __sys_sendmsg+0xcd/0x170 [ 51.053121][ C1] do_syscall_64+0xc6/0x1e0 [ 51.053406][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 51.053736][ C1] IN-SOFTIRQ-W at: [ 51.053902][ C1] __lock_acquire+0x797/0x1570 [ 51.054186][ C1] lock_acquire.part.0+0xeb/0x330 [ 51.054465][ C1] _raw_spin_lock+0x30/0x40 [ 51.054743][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 51.055139][ C1] call_timer_fn+0x13b/0x230 [ 51.055385][ C1] __run_timers+0x545/0x810 [ 51.055622][ C1] run_timer_softirq+0xe8/0x1b0 [ 51.055887][ C1] __do_softirq+0x1f8/0x5df [ 51.056174][ C1] irq_exit_rcu+0x97/0xc0 [ 51.056417][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 51.056704][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 51.056981][ C1] default_idle+0xf/0x20 [ 51.057166][ C1] default_idle_call+0x6d/0xb0 [ 51.057491][ C1] cpuidle_idle_call+0x1f4/0x280 [ 51.057703][ C1] do_idle+0xf9/0x160 [ 51.057868][ C1] cpu_startup_entry+0x54/0x60 [ 51.058084][ C1] start_secondary+0x21c/0x2b0 [ 51.058307][ C1] common_startup_64+0x12c/0x138 [ 51.058702][ C1] INITIAL USE at: [ 51.058869][ C1] __lock_acquire+0x797/0x1570 [ 51.059145][ C1] lock_acquire.part.0+0xeb/0x330 [ 51.059392][ C1] _raw_spin_lock_bh+0x38/0x50 [ 51.059792][ C1] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 51.060195][ C1] br_dev_open+0xa2/0x120 [bridge] [ 51.060527][ C1] __dev_open+0x221/0x430 [ 51.060952][ C1] __dev_change_flags+0x469/0x6c0 [ 51.061239][ C1] rtnl_configure_link+0x118/0x200 [ 51.061520][ C1] rtnl_newlink_create+0x36e/0x850 [ 51.061938][ C1] __rtnl_newlink+0xac9/0xd80 [ 51.062231][ C1] rtnl_newlink+0x63/0xa0 [ 51.062507][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 51.062784][ C1] netlink_rcv_skb+0x130/0x360 [ 51.063203][ C1] netlink_unicast+0x449/0x710 [ 51.063482][ C1] netlink_sendmsg+0x723/0xbe0 [ 51.063775][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 51.064196][ C1] ___sys_sendmsg+0xee/0x170 [ 51.064486][ C1] __sys_sendmsg+0xcd/0x170 [ 51.064745][ C1] do_syscall_64+0xc6/0x1e0 [ 51.065012][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 51.065385][ C1] } [ 51.065460][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 51.065771][ C1] ... acquired at: [ 51.065989][ C1] mark_lock+0x28d/0x3e0 [ 51.066198][ C1] mark_usage+0xd9/0x2a0 [ 51.066395][ C1] __lock_acquire+0x797/0x1570 [ 51.066600][ C1] lock_acquire.part.0+0xeb/0x330 [ 51.066775][ C1] _raw_spin_lock+0x30/0x40 [ 51.067080][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 51.067436][ C1] call_timer_fn+0x13b/0x230 [ 51.067651][ C1] __run_timers+0x545/0x810 [ 51.067874][ C1] run_timer_softirq+0xe8/0x1b0 [ 51.068236][ C1] __do_softirq+0x1f8/0x5df [ 51.068466][ C1] irq_exit_rcu+0x97/0xc0 [ 51.068690][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 51.068967][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 51.069385][ C1] default_idle+0xf/0x20 [ 51.069609][ C1] default_idle_call+0x6d/0xb0 [ 51.069828][ C1] cpuidle_idle_call+0x1f4/0x280 [ 51.070056][ C1] do_idle+0xf9/0x160 [ 51.070364][ C1] cpu_startup_entry+0x54/0x60 [ 51.070598][ C1] start_secondary+0x21c/0x2b0 [ 51.070824][ C1] common_startup_64+0x12c/0x138 [ 51.071044][ C1] [ 51.071158][ C1] [ 51.071158][ C1] stack backtrace: [ 51.071572][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 51.071909][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 51.072680][ C1] Call Trace: [ 51.072850][ C1] [ 51.072968][ C1] dump_stack_lvl+0x82/0xd0 [ 51.073196][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 51.073471][ C1] ? common_startup_64+0x12c/0x138 [ 51.073839][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 51.074115][ C1] ? __pfx_usage_skip+0x10/0x10 [ 51.074317][ C1] ? __pfx_usage_match+0x10/0x10 [ 51.074470][ C1] ? arch_stack_walk+0x8c/0xf0 [ 51.074707][ C1] mark_lock_irq+0x4cd/0xa10 [ 51.074852][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 51.075001][ C1] ? stack_trace_save+0x94/0xd0 [ 51.075214][ C1] ? add_chain_cache+0x248/0x8b0 [ 51.075497][ C1] ? save_trace+0x8f/0x5b0 [ 51.075649][ C1] mark_lock+0x28d/0x3e0 [ 51.075759][ C1] mark_usage+0xd9/0x2a0 [ 51.075870][ C1] __lock_acquire+0x797/0x1570 [ 51.076016][ C1] ? __lock_acquire+0xaf0/0x1570 [ 51.076261][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 51.076622][ C1] lock_acquire.part.0+0xeb/0x330 [ 51.076825][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 51.077128][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 51.077276][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 51.077445][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 51.077670][ C1] ? lock_acquire+0x32/0xc0 [ 51.077900][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 51.078136][ C1] _raw_spin_lock+0x30/0x40 [ 51.078327][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 51.078667][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 51.079130][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 51.079397][ C1] call_timer_fn+0x13b/0x230 [ 51.079593][ C1] ? call_timer_fn+0xe8/0x230 [ 51.079818][ C1] ? call_timer_fn+0xe8/0x230 [ 51.080039][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 51.080251][ C1] ? mark_lock+0x38/0x3e0 [ 51.080387][ C1] __run_timers+0x545/0x810 [ 51.080520][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 51.080879][ C1] ? __pfx___run_timers+0x10/0x10 [ 51.081080][ C1] ? do_raw_spin_lock+0x131/0x270 [ 51.081294][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 51.081511][ C1] ? lock_acquire+0x32/0xc0 [ 51.081864][ C1] ? run_timer_softirq+0xe0/0x1b0 [ 51.082079][ C1] run_timer_softirq+0xe8/0x1b0 [ 51.082335][ C1] __do_softirq+0x1f8/0x5df [ 51.082571][ C1] irq_exit_rcu+0x97/0xc0 [ 51.082901][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 51.083119][ C1] [ 51.083235][ C1] [ 51.083350][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 51.083639][ C1] RIP: 0010:default_idle+0xf/0x20 [ 51.084018][ 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 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 [ 51.084771][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000242 [ 51.085182][ C1] RAX: 00000000000c9c0b RBX: 1ffff92000029fc1 RCX: ffffffffb390e9d5 [ 51.085501][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb12aa4a4 [ 51.085816][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1709c [ 51.086278][ C1] R10: ffff8880360b84e3 R11: ffff8880360bdc80 R12: 0000000000000000 [ 51.086522][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 51.086791][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 51.087036][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 51.087177][ C1] default_idle_call+0x6d/0xb0 [ 51.087331][ C1] cpuidle_idle_call+0x1f4/0x280 [ 51.087480][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 51.087887][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 51.088079][ C1] do_idle+0xf9/0x160 [ 51.088236][ C1] cpu_startup_entry+0x54/0x60 [ 51.088443][ C1] start_secondary+0x21c/0x2b0 [ 51.088704][ C1] ? __pfx_start_secondary+0x10/0x10 [ 51.088879][ C1] common_startup_64+0x12c/0x138 [ 51.089040][ C1] [ 134.097040][ T653] Mirror/redirect action on [ 172.405426][ T795] br: port 3(veth4) entered disabled state [ 172.406767][ T795] veth4: left allmulticast mode [ 172.407045][ T795] veth4: left promiscuous mode [ 172.407443][ T795] br: port 3(veth4) entered disabled state [ 172.522279][ T796] br: port 2(veth3) entered disabled state [ 172.522712][ T796] veth3: left allmulticast mode [ 172.522857][ T796] veth3: left promiscuous mode [ 172.523111][ T796] br: port 2(veth3) entered disabled state [ 172.631570][ T797] br: port 1(veth1) entered disabled state [ 172.632073][ T797] veth1: left allmulticast mode [ 172.632226][ T797] veth1: left promiscuous mode [ 172.632478][ T797] br: port 1(veth1) entered disabled state