[ 29.636136][ T286] br0: port 1(veth1) entered blocking state [ 29.636562][ T286] br0: port 1(veth1) entered disabled state [ 29.637443][ T286] veth1: entered allmulticast mode [ 29.639491][ T286] veth1: entered promiscuous mode [ 29.782071][ T288] br0: port 2(veth2) entered blocking state [ 29.782333][ T288] br0: port 2(veth2) entered disabled state [ 29.782594][ T288] veth2: entered allmulticast mode [ 29.784823][ T288] veth2: entered promiscuous mode [ 30.042847][ T49] br0: port 1(veth1) entered blocking state [ 30.043227][ T49] br0: port 1(veth1) entered forwarding state [ 40.734638][ T293] br0: port 2(veth2) entered blocking state [ 40.735097][ T293] br0: port 2(veth2) entered forwarding state [ 45.418580][ C1] [ 45.418792][ C1] ======================================================== [ 45.419104][ C1] WARNING: possible irq lock inversion dependency detected [ 45.419402][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 45.419613][ C1] -------------------------------------------------------- [ 45.419915][ C1] swapper/1/0 just changed the state of lock: [ 45.420170][ C1] ffff888004b8ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.420712][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 45.421018][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 45.421025][ C1] [ 45.421025][ C1] [ 45.421025][ C1] and interrupts could create inverse lock ordering between them. [ 45.421025][ C1] [ 45.421778][ C1] [ 45.421778][ C1] other info that might help us debug this: [ 45.422071][ C1] Chain exists of: [ 45.422071][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 45.422071][ C1] [ 45.422550][ C1] Possible interrupt unsafe locking scenario: [ 45.422550][ C1] [ 45.422862][ C1] CPU0 CPU1 [ 45.423058][ C1] ---- ---- [ 45.423259][ C1] lock(&p->alloc_lock); [ 45.423413][ C1] local_irq_disable(); [ 45.423661][ C1] lock(&br->lock); [ 45.423914][ C1] lock(lweventlist_lock); [ 45.424191][ C1] [ 45.424342][ C1] lock(&br->lock); [ 45.424497][ C1] [ 45.424497][ C1] *** DEADLOCK *** [ 45.424497][ C1] [ 45.424797][ C1] 1 lock held by swapper/1/0: [ 45.425007][ C1] #0: ffffc900001d8d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 45.425447][ C1] [ 45.425447][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 45.425799][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.426015][ C1] HARDIRQ-ON-W at: [ 45.426171][ C1] __lock_acquire+0x797/0x1570 [ 45.426436][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.426693][ C1] _raw_spin_lock+0x30/0x40 [ 45.426955][ C1] set_mems_allowed+0x1d/0x210 [ 45.427214][ C1] kernel_init_freeable+0x72/0x310 [ 45.427468][ C1] kernel_init+0x20/0x200 [ 45.427729][ C1] ret_from_fork+0x31/0x70 [ 45.427985][ C1] ret_from_fork_asm+0x1a/0x30 [ 45.428242][ C1] SOFTIRQ-ON-W at: [ 45.428404][ C1] __lock_acquire+0x797/0x1570 [ 45.428665][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.428932][ C1] _raw_spin_lock+0x30/0x40 [ 45.429187][ C1] set_mems_allowed+0x1d/0x210 [ 45.429443][ C1] kernel_init_freeable+0x72/0x310 [ 45.429702][ C1] kernel_init+0x20/0x200 [ 45.429967][ C1] ret_from_fork+0x31/0x70 [ 45.430229][ C1] ret_from_fork_asm+0x1a/0x30 [ 45.430489][ C1] INITIAL USE at: [ 45.430645][ C1] __lock_acquire+0x797/0x1570 [ 45.430903][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.431163][ C1] _raw_spin_lock+0x30/0x40 [ 45.431426][ C1] set_mems_allowed+0x1d/0x210 [ 45.431681][ C1] kernel_init_freeable+0x72/0x310 [ 45.431942][ C1] kernel_init+0x20/0x200 [ 45.432201][ C1] ret_from_fork+0x31/0x70 [ 45.432457][ C1] ret_from_fork_asm+0x1a/0x30 [ 45.432710][ C1] } [ 45.432825][ C1] ... key at: [] __key.387+0x0/0x40 [ 45.433136][ C1] ... acquired at: [ 45.433298][ C1] __lock_acquire+0xaf0/0x1570 [ 45.433511][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.433715][ C1] _raw_spin_lock+0x30/0x40 [ 45.433918][ C1] __get_task_comm+0x27/0x70 [ 45.434131][ C1] ref_tracker_alloc+0x2ee/0x490 [ 45.434335][ C1] linkwatch_fire_event+0x196/0x200 [ 45.434533][ C1] veth_newlink+0x367/0x830 [veth] [ 45.434751][ C1] rtnl_newlink_create+0x341/0x850 [ 45.434948][ C1] __rtnl_newlink+0xac9/0xd80 [ 45.435148][ C1] rtnl_newlink+0x63/0xa0 [ 45.435350][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.435551][ C1] netlink_rcv_skb+0x130/0x360 [ 45.435760][ C1] netlink_unicast+0x449/0x710 [ 45.435960][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.436159][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 45.436481][ C1] ___sys_sendmsg+0xee/0x170 [ 45.436688][ C1] __sys_sendmsg+0xcd/0x170 [ 45.436889][ C1] do_syscall_64+0xc6/0x1e0 [ 45.437102][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.437357][ C1] [ 45.437465][ C1] -> (lweventlist_lock){....}-{2:2} { [ 45.437673][ C1] INITIAL USE at: [ 45.437824][ C1] __lock_acquire+0x797/0x1570 [ 45.438085][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.438335][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.438587][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 45.438834][ C1] rtnl_getlink+0x4c9/0x970 [ 45.439088][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.439338][ C1] netlink_rcv_skb+0x130/0x360 [ 45.439603][ C1] netlink_unicast+0x449/0x710 [ 45.439853][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.440106][ C1] __sys_sendto+0x37d/0x410 [ 45.440360][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 45.440606][ C1] do_syscall_64+0xc6/0x1e0 [ 45.440858][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.441170][ C1] } [ 45.441276][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 45.441572][ C1] ... acquired at: [ 45.441725][ C1] __lock_acquire+0xaf0/0x1570 [ 45.441932][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.442128][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.442323][ C1] linkwatch_fire_event+0x74/0x200 [ 45.442526][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 45.442856][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 45.443173][ C1] dev_set_mac_address+0x28a/0x410 [ 45.443379][ C1] dev_set_mac_address_user+0x31/0x50 [ 45.443581][ C1] do_setlink+0x17b4/0x21e0 [ 45.443784][ C1] rtnl_setlink+0x1f7/0x310 [ 45.443983][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.444196][ C1] netlink_rcv_skb+0x130/0x360 [ 45.444414][ C1] netlink_unicast+0x449/0x710 [ 45.444613][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.444811][ C1] __sys_sendto+0x37d/0x410 [ 45.445019][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 45.445223][ C1] do_syscall_64+0xc6/0x1e0 [ 45.445424][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.445676][ C1] [ 45.445779][ C1] -> (&br->lock){+.-.}-{2:2} { [ 45.445993][ C1] HARDIRQ-ON-W at: [ 45.446149][ C1] __lock_acquire+0x797/0x1570 [ 45.446413][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.446663][ C1] _raw_spin_lock_bh+0x38/0x50 [ 45.446920][ C1] br_set_mac_address+0xd2/0x260 [bridge] [ 45.447290][ C1] dev_set_mac_address+0x28a/0x410 [ 45.447541][ C1] dev_set_mac_address_user+0x31/0x50 [ 45.447793][ C1] do_setlink+0x17b4/0x21e0 [ 45.448057][ C1] rtnl_setlink+0x1f7/0x310 [ 45.448321][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.448582][ C1] netlink_rcv_skb+0x130/0x360 [ 45.448850][ C1] netlink_unicast+0x449/0x710 [ 45.449108][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.449362][ C1] __sys_sendto+0x37d/0x410 [ 45.449628][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 45.449885][ C1] do_syscall_64+0xc6/0x1e0 [ 45.450143][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.450451][ C1] IN-SOFTIRQ-W at: [ 45.450612][ C1] __lock_acquire+0x797/0x1570 [ 45.450866][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.451119][ C1] _raw_spin_lock+0x30/0x40 [ 45.451383][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.451755][ C1] call_timer_fn+0x13b/0x230 [ 45.452011][ C1] __run_timers+0x545/0x810 [ 45.452265][ C1] run_timer_softirq+0xe8/0x1b0 [ 45.452525][ C1] __do_softirq+0x1f8/0x5df [ 45.452772][ C1] irq_exit_rcu+0x97/0xc0 [ 45.453038][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.453333][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.453639][ C1] default_idle+0xf/0x20 [ 45.453895][ C1] default_idle_call+0x6d/0xb0 [ 45.454152][ C1] cpuidle_idle_call+0x1f4/0x280 [ 45.454413][ C1] do_idle+0xf9/0x160 [ 45.454618][ C1] cpu_startup_entry+0x54/0x60 [ 45.454878][ C1] start_secondary+0x21c/0x2b0 [ 45.455152][ C1] common_startup_64+0x12c/0x138 [ 45.455424][ C1] INITIAL USE at: [ 45.455584][ C1] __lock_acquire+0x797/0x1570 [ 45.455845][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.456105][ C1] _raw_spin_lock_bh+0x38/0x50 [ 45.456363][ C1] br_set_mac_address+0xd2/0x260 [bridge] [ 45.456744][ C1] dev_set_mac_address+0x28a/0x410 [ 45.457009][ C1] dev_set_mac_address_user+0x31/0x50 [ 45.457277][ C1] do_setlink+0x17b4/0x21e0 [ 45.457544][ C1] rtnl_setlink+0x1f7/0x310 [ 45.457819][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.458087][ C1] netlink_rcv_skb+0x130/0x360 [ 45.458357][ C1] netlink_unicast+0x449/0x710 [ 45.458621][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.458881][ C1] __sys_sendto+0x37d/0x410 [ 45.459152][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 45.459411][ C1] do_syscall_64+0xc6/0x1e0 [ 45.459677][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.460009][ C1] } [ 45.460118][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 45.460557][ C1] ... acquired at: [ 45.460710][ C1] mark_lock+0x28d/0x3e0 [ 45.460926][ C1] mark_usage+0xd9/0x2a0 [ 45.461131][ C1] __lock_acquire+0x797/0x1570 [ 45.461338][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.461686][ C1] _raw_spin_lock+0x30/0x40 [ 45.461909][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.462241][ C1] call_timer_fn+0x13b/0x230 [ 45.462456][ C1] __run_timers+0x545/0x810 [ 45.462799][ C1] run_timer_softirq+0xe8/0x1b0 [ 45.463012][ C1] __do_softirq+0x1f8/0x5df [ 45.463227][ C1] irq_exit_rcu+0x97/0xc0 [ 45.463437][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.463832][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.464137][ C1] default_idle+0xf/0x20 [ 45.464348][ C1] default_idle_call+0x6d/0xb0 [ 45.464561][ C1] cpuidle_idle_call+0x1f4/0x280 [ 45.464906][ C1] do_idle+0xf9/0x160 [ 45.465070][ C1] cpu_startup_entry+0x54/0x60 [ 45.465280][ C1] start_secondary+0x21c/0x2b0 [ 45.465492][ C1] common_startup_64+0x12c/0x138 [ 45.465710][ C1] [ 45.465946][ C1] [ 45.465946][ C1] stack backtrace: [ 45.466217][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 45.466555][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.467035][ C1] Call Trace: [ 45.467215][ C1] [ 45.467329][ C1] dump_stack_lvl+0x82/0xd0 [ 45.467570][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 45.467958][ C1] ? common_startup_64+0x12c/0x138 [ 45.468169][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 45.468428][ C1] ? __pfx_usage_skip+0x10/0x10 [ 45.468641][ C1] ? __pfx_usage_match+0x10/0x10 [ 45.468850][ C1] ? arch_stack_walk+0x8c/0xf0 [ 45.469050][ C1] mark_lock_irq+0x4cd/0xa10 [ 45.469259][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 45.469496][ C1] ? stack_trace_save+0x94/0xd0 [ 45.469859][ C1] ? add_chain_cache+0x248/0x8b0 [ 45.470094][ C1] ? save_trace+0x8f/0x5b0 [ 45.470324][ C1] mark_lock+0x28d/0x3e0 [ 45.470493][ C1] mark_usage+0xd9/0x2a0 [ 45.470666][ C1] __lock_acquire+0x797/0x1570 [ 45.471039][ C1] ? __lock_acquire+0xaf0/0x1570 [ 45.471256][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.471657][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.471888][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.472262][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.472480][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 45.472696][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.473038][ C1] ? lock_acquire+0x32/0xc0 [ 45.473391][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.473731][ C1] _raw_spin_lock+0x30/0x40 [ 45.473952][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.474461][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.474799][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.475192][ C1] call_timer_fn+0x13b/0x230 [ 45.475403][ C1] ? call_timer_fn+0xe8/0x230 [ 45.475902][ C1] ? call_timer_fn+0xe8/0x230 [ 45.476325][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 45.476555][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.476801][ C1] __run_timers+0x545/0x810 [ 45.477204][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.477623][ C1] ? __pfx___run_timers+0x10/0x10 [ 45.477851][ C1] ? do_raw_spin_lock+0x131/0x270 [ 45.478080][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.478452][ C1] ? lock_acquire+0x32/0xc0 [ 45.478685][ C1] ? run_timer_softirq+0xe0/0x1b0 [ 45.478921][ C1] run_timer_softirq+0xe8/0x1b0 [ 45.479161][ C1] __do_softirq+0x1f8/0x5df [ 45.479537][ C1] irq_exit_rcu+0x97/0xc0 [ 45.479713][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.479947][ C1] [ 45.480079][ C1] [ 45.480201][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.480640][ C1] RIP: 0010:default_idle+0xf/0x20 [ 45.480890][ 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 [ 45.481868][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000246 [ 45.482171][ C1] RAX: 0000000000070a87 RBX: 1ffff92000029fc1 RCX: ffffffff8c10e9d5 [ 45.482509][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff89aaa4a4 [ 45.482994][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f1709c [ 45.483351][ C1] R10: ffff88802f8b84e3 R11: ffff88802f8ad9b0 R12: 0000000000000000 [ 45.483693][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 45.484047][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 45.484212][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 45.484359][ C1] default_idle_call+0x6d/0xb0 [ 45.484509][ C1] cpuidle_idle_call+0x1f4/0x280 [ 45.484735][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 45.484889][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 45.485038][ C1] do_idle+0xf9/0x160 [ 45.485147][ C1] cpu_startup_entry+0x54/0x60 [ 45.485292][ C1] start_secondary+0x21c/0x2b0 [ 45.485517][ C1] ? __pfx_start_secondary+0x10/0x10 [ 45.485664][ C1] common_startup_64+0x12c/0x138 [ 45.485816][ C1] [ 46.551541][ T305] GACT probability NOT on [ 48.389001][ T312] br0: port 2(veth2) entered disabled state [ 48.710320][ T293] br0: port 2(veth2) entered blocking state [ 48.710534][ T293] br0: port 2(veth2) entered forwarding state [ 55.744709][ T329] br0: port 1(veth1) entered disabled state [ 55.851091][ T330] br0: port 2(veth2) entered disabled state [ 55.948500][ T331] veth2: left allmulticast mode [ 55.948692][ T331] veth2: left promiscuous mode [ 55.949836][ T331] br0: port 2(veth2) entered disabled state [ 55.951150][ T331] veth1: left allmulticast mode [ 55.951300][ T331] veth1: left promiscuous mode [ 55.951544][ T331] br0: port 1(veth1) entered disabled state