[ 27.831330][ T284] ip (284) used greatest stack depth: 23792 bytes left [ 30.110220][ T304] br0: port 1(veth1) entered blocking state [ 30.112129][ T304] br0: port 1(veth1) entered disabled state [ 30.112643][ T304] veth1: entered allmulticast mode [ 30.115994][ T304] veth1: entered promiscuous mode [ 30.247989][ T306] br0: port 2(veth2) entered blocking state [ 30.248265][ T306] br0: port 2(veth2) entered disabled state [ 30.248496][ T306] veth2: entered allmulticast mode [ 30.250254][ T306] veth2: entered promiscuous mode [ 30.355030][ T307] br0: port 3(veth4) entered blocking state [ 30.355339][ T307] br0: port 3(veth4) entered disabled state [ 30.356394][ T307] veth4: entered allmulticast mode [ 30.358210][ T307] veth4: entered promiscuous mode [ 30.950489][ T7] br0: port 1(veth1) entered blocking state [ 30.950829][ T7] br0: port 1(veth1) entered forwarding state [ 31.080053][ T49] br0: port 2(veth2) entered blocking state [ 31.080459][ T49] br0: port 2(veth2) entered forwarding state [ 31.199185][ T51] br0: port 3(veth4) entered blocking state [ 31.199508][ T51] br0: port 3(veth4) entered forwarding state [ 46.376672][ C0] [ 46.376882][ C0] ======================================================== [ 46.377109][ C0] WARNING: possible irq lock inversion dependency detected [ 46.377350][ C0] 6.9.0-rc1-virtme #1 Not tainted [ 46.377515][ C0] -------------------------------------------------------- [ 46.377733][ C0] swapper/0/0 just changed the state of lock: [ 46.377919][ C0] ffff88800647ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.378292][ C0] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 46.378509][ C0] (&p->alloc_lock){+.+.}-{2:2} [ 46.378513][ C0] [ 46.378513][ C0] [ 46.378513][ C0] and interrupts could create inverse lock ordering between them. [ 46.378513][ C0] [ 46.379047][ C0] [ 46.379047][ C0] other info that might help us debug this: [ 46.379257][ C0] Chain exists of: [ 46.379257][ C0] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 46.379257][ C0] [ 46.379600][ C0] Possible interrupt unsafe locking scenario: [ 46.379600][ C0] [ 46.379821][ C0] CPU0 CPU1 [ 46.379965][ C0] ---- ---- [ 46.380110][ C0] lock(&p->alloc_lock); [ 46.380220][ C0] local_irq_disable(); [ 46.380404][ C0] lock(&br->lock); [ 46.380595][ C0] lock(lweventlist_lock); [ 46.380775][ C0] [ 46.380884][ C0] lock(&br->lock); [ 46.380995][ C0] [ 46.380995][ C0] *** DEADLOCK *** [ 46.380995][ C0] [ 46.381213][ C0] 1 lock held by swapper/0/0: [ 46.381359][ C0] #0: ffffc90000007d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 46.381664][ C0] [ 46.381664][ C0] the shortest dependencies between 2nd lock and 1st lock: [ 46.381919][ C0] -> (&p->alloc_lock){+.+.}-{2:2} { [ 46.382070][ C0] HARDIRQ-ON-W at: [ 46.382183][ C0] __lock_acquire+0x797/0x1570 [ 46.382373][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.382579][ C0] _raw_spin_lock+0x30/0x40 [ 46.382850][ C0] set_mems_allowed+0x1d/0x210 [ 46.383041][ C0] kernel_init_freeable+0x72/0x310 [ 46.383228][ C0] kernel_init+0x20/0x200 [ 46.383428][ C0] ret_from_fork+0x31/0x70 [ 46.383618][ C0] ret_from_fork_asm+0x1a/0x30 [ 46.383800][ C0] SOFTIRQ-ON-W at: [ 46.383912][ C0] __lock_acquire+0x797/0x1570 [ 46.384098][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.384280][ C0] _raw_spin_lock+0x30/0x40 [ 46.384463][ C0] set_mems_allowed+0x1d/0x210 [ 46.384646][ C0] kernel_init_freeable+0x72/0x310 [ 46.384828][ C0] kernel_init+0x20/0x200 [ 46.385010][ C0] ret_from_fork+0x31/0x70 [ 46.385198][ C0] ret_from_fork_asm+0x1a/0x30 [ 46.385380][ C0] INITIAL USE at: [ 46.385492][ C0] __lock_acquire+0x797/0x1570 [ 46.385675][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.385857][ C0] _raw_spin_lock+0x30/0x40 [ 46.386038][ C0] set_mems_allowed+0x1d/0x210 [ 46.386226][ C0] kernel_init_freeable+0x72/0x310 [ 46.386408][ C0] kernel_init+0x20/0x200 [ 46.386589][ C0] ret_from_fork+0x31/0x70 [ 46.386773][ C0] ret_from_fork_asm+0x1a/0x30 [ 46.386958][ C0] } [ 46.387034][ C0] ... key at: [] __key.387+0x0/0x40 [ 46.387253][ C0] ... acquired at: [ 46.387384][ C0] __lock_acquire+0xaf0/0x1570 [ 46.387547][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.387693][ C0] _raw_spin_lock+0x30/0x40 [ 46.387840][ C0] __get_task_comm+0x27/0x70 [ 46.387991][ C0] ref_tracker_alloc+0x2ee/0x490 [ 46.388141][ C0] linkwatch_fire_event+0x196/0x200 [ 46.388291][ C0] veth_newlink+0x367/0x830 [veth] [ 46.388442][ C0] rtnl_newlink_create+0x341/0x850 [ 46.388591][ C0] __rtnl_newlink+0xac9/0xd80 [ 46.388739][ C0] rtnl_newlink+0x63/0xa0 [ 46.388884][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.389027][ C0] netlink_rcv_skb+0x130/0x360 [ 46.389175][ C0] netlink_unicast+0x449/0x710 [ 46.389320][ C0] netlink_sendmsg+0x723/0xbe0 [ 46.389464][ C0] ____sys_sendmsg+0x7b2/0xa10 [ 46.389612][ C0] ___sys_sendmsg+0xee/0x170 [ 46.389762][ C0] __sys_sendmsg+0xcd/0x170 [ 46.389908][ C0] do_syscall_64+0xc6/0x1e0 [ 46.390055][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.390237][ C0] [ 46.390311][ C0] -> (lweventlist_lock){....}-{2:2} { [ 46.390460][ C0] INITIAL USE at: [ 46.390571][ C0] __lock_acquire+0x797/0x1570 [ 46.390759][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.390945][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.391129][ C0] linkwatch_sync_dev+0x29/0x1f0 [ 46.391315][ C0] rtnl_getlink+0x4c9/0x970 [ 46.391513][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.391694][ C0] netlink_rcv_skb+0x130/0x360 [ 46.391877][ C0] netlink_unicast+0x449/0x710 [ 46.392063][ C0] netlink_sendmsg+0x723/0xbe0 [ 46.392245][ C0] __sys_sendto+0x37d/0x410 [ 46.392431][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 46.392612][ C0] do_syscall_64+0xc6/0x1e0 [ 46.392797][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.393016][ C0] } [ 46.393089][ C0] ... key at: [] lweventlist_lock+0x18/0x60 [ 46.393309][ C0] ... acquired at: [ 46.393417][ C0] __lock_acquire+0xaf0/0x1570 [ 46.393563][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.393710][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.393855][ C0] linkwatch_fire_event+0x74/0x200 [ 46.394000][ C0] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 46.394222][ C0] br_set_mac_address+0x1f3/0x260 [bridge] [ 46.394453][ C0] dev_set_mac_address+0x28a/0x410 [ 46.394612][ C0] dev_set_mac_address_user+0x31/0x50 [ 46.394757][ C0] do_setlink+0x17b4/0x21e0 [ 46.394902][ C0] rtnl_setlink+0x1f7/0x310 [ 46.395047][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.395192][ C0] netlink_rcv_skb+0x130/0x360 [ 46.395358][ C0] netlink_unicast+0x449/0x710 [ 46.395505][ C0] netlink_sendmsg+0x723/0xbe0 [ 46.395657][ C0] __sys_sendto+0x37d/0x410 [ 46.395810][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 46.395956][ C0] do_syscall_64+0xc6/0x1e0 [ 46.396101][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.396292][ C0] [ 46.396366][ C0] -> (&br->lock){+.-.}-{2:2} { [ 46.396516][ C0] HARDIRQ-ON-W at: [ 46.396634][ C0] __lock_acquire+0x797/0x1570 [ 46.396818][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.397013][ C0] _raw_spin_lock_bh+0x38/0x50 [ 46.397196][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 46.397457][ C0] dev_set_mac_address+0x28a/0x410 [ 46.397648][ C0] dev_set_mac_address_user+0x31/0x50 [ 46.397830][ C0] do_setlink+0x17b4/0x21e0 [ 46.398012][ C0] rtnl_setlink+0x1f7/0x310 [ 46.398201][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.398382][ C0] netlink_rcv_skb+0x130/0x360 [ 46.398566][ C0] netlink_unicast+0x449/0x710 [ 46.398749][ C0] netlink_sendmsg+0x723/0xbe0 [ 46.398932][ C0] __sys_sendto+0x37d/0x410 [ 46.399114][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 46.399301][ C0] do_syscall_64+0xc6/0x1e0 [ 46.399510][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.399732][ C0] IN-SOFTIRQ-W at: [ 46.399842][ C0] __lock_acquire+0x797/0x1570 [ 46.400028][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.400218][ C0] _raw_spin_lock+0x30/0x40 [ 46.400400][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.400659][ C0] call_timer_fn+0x13b/0x230 [ 46.400845][ C0] __run_timers+0x545/0x810 [ 46.401039][ C0] run_timer_softirq+0xe8/0x1b0 [ 46.401227][ C0] __do_softirq+0x1f8/0x5df [ 46.401414][ C0] irq_exit_rcu+0x97/0xc0 [ 46.401600][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.401831][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.402057][ C0] default_idle+0xf/0x20 [ 46.402240][ C0] default_idle_call+0x6d/0xb0 [ 46.402421][ C0] cpuidle_idle_call+0x1f4/0x280 [ 46.402604][ C0] do_idle+0xf9/0x160 [ 46.402760][ C0] cpu_startup_entry+0x54/0x60 [ 46.402951][ C0] rest_init+0x14f/0x260 [ 46.403135][ C0] start_kernel+0x318/0x3d0 [ 46.403320][ C0] x86_64_start_reservations+0x18/0x30 [ 46.403528][ C0] x86_64_start_kernel+0xba/0x110 [ 46.403718][ C0] common_startup_64+0x12c/0x138 [ 46.403910][ C0] INITIAL USE at: [ 46.404021][ C0] __lock_acquire+0x797/0x1570 [ 46.404215][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.404400][ C0] _raw_spin_lock_bh+0x38/0x50 [ 46.404589][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 46.404935][ C0] dev_set_mac_address+0x28a/0x410 [ 46.405129][ C0] dev_set_mac_address_user+0x31/0x50 [ 46.405318][ C0] do_setlink+0x17b4/0x21e0 [ 46.405594][ C0] rtnl_setlink+0x1f7/0x310 [ 46.405785][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.406034][ C0] netlink_rcv_skb+0x130/0x360 [ 46.406372][ C0] netlink_unicast+0x449/0x710 [ 46.406555][ C0] netlink_sendmsg+0x723/0xbe0 [ 46.406756][ C0] __sys_sendto+0x37d/0x410 [ 46.406939][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 46.407307][ C0] do_syscall_64+0xc6/0x1e0 [ 46.407527][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.407753][ C0] } [ 46.407828][ C0] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 46.408210][ C0] ... acquired at: [ 46.408317][ C0] mark_lock+0x28d/0x3e0 [ 46.408464][ C0] mark_usage+0xd9/0x2a0 [ 46.408701][ C0] __lock_acquire+0x797/0x1570 [ 46.408847][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.409000][ C0] _raw_spin_lock+0x30/0x40 [ 46.409146][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.409457][ C0] call_timer_fn+0x13b/0x230 [ 46.409605][ C0] __run_timers+0x545/0x810 [ 46.409750][ C0] run_timer_softirq+0xe8/0x1b0 [ 46.409901][ C0] __do_softirq+0x1f8/0x5df [ 46.410050][ C0] irq_exit_rcu+0x97/0xc0 [ 46.410290][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.410473][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.410663][ C0] default_idle+0xf/0x20 [ 46.410902][ C0] default_idle_call+0x6d/0xb0 [ 46.411052][ C0] cpuidle_idle_call+0x1f4/0x280 [ 46.411202][ C0] do_idle+0xf9/0x160 [ 46.411313][ C0] cpu_startup_entry+0x54/0x60 [ 46.411458][ C0] rest_init+0x14f/0x260 [ 46.411703][ C0] start_kernel+0x318/0x3d0 [ 46.411851][ C0] x86_64_start_reservations+0x18/0x30 [ 46.411997][ C0] x86_64_start_kernel+0xba/0x110 [ 46.412142][ C0] common_startup_64+0x12c/0x138 [ 46.412287][ C0] [ 46.412360][ C0] [ 46.412360][ C0] stack backtrace: [ 46.412540][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc1-virtme #1 [ 46.412759][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 46.413185][ C0] Call Trace: [ 46.413294][ C0] [ 46.413375][ C0] dump_stack_lvl+0x82/0xd0 [ 46.413533][ C0] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 46.413810][ C0] ? common_startup_64+0x12c/0x138 [ 46.413957][ C0] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 46.414151][ C0] ? __pfx_usage_skip+0x10/0x10 [ 46.414298][ C0] ? __pfx_usage_match+0x10/0x10 [ 46.414538][ C0] ? arch_stack_walk+0x8c/0xf0 [ 46.414694][ C0] mark_lock_irq+0x4cd/0xa10 [ 46.414842][ C0] ? __pfx_mark_lock_irq+0x10/0x10 [ 46.414986][ C0] ? stack_trace_save+0x94/0xd0 [ 46.415231][ C0] ? add_chain_cache+0x248/0x8b0 [ 46.415378][ C0] ? save_trace+0x8f/0x5b0 [ 46.415523][ C0] mark_lock+0x28d/0x3e0 [ 46.415638][ C0] mark_usage+0xd9/0x2a0 [ 46.415749][ C0] __lock_acquire+0x797/0x1570 [ 46.415993][ C0] ? __lock_acquire+0xaf0/0x1570 [ 46.416139][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.416393][ C0] lock_acquire.part.0+0xeb/0x330 [ 46.416632][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.416849][ C0] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.416995][ C0] ? trace_lock_acquire+0x135/0x1c0 [ 46.417142][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.417357][ C0] ? lock_acquire+0x32/0xc0 [ 46.417519][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.417743][ C0] _raw_spin_lock+0x30/0x40 [ 46.417889][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.418204][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.418428][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.418685][ C0] call_timer_fn+0x13b/0x230 [ 46.419008][ C0] ? call_timer_fn+0xe8/0x230 [ 46.419158][ C0] ? call_timer_fn+0xe8/0x230 [ 46.419303][ C0] ? __pfx_call_timer_fn+0x10/0x10 [ 46.419449][ C0] ? mark_lock+0x38/0x3e0 [ 46.419563][ C0] __run_timers+0x545/0x810 [ 46.419808][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.420071][ C0] ? __pfx___run_timers+0x10/0x10 [ 46.420217][ C0] ? do_raw_spin_lock+0x131/0x270 [ 46.420362][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 46.420596][ C0] ? lock_acquire+0x32/0xc0 [ 46.420739][ C0] ? run_timer_softirq+0xe0/0x1b0 [ 46.420892][ C0] run_timer_softirq+0xe8/0x1b0 [ 46.421038][ C0] __do_softirq+0x1f8/0x5df [ 46.421273][ C0] irq_exit_rcu+0x97/0xc0 [ 46.421388][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.421538][ C0] [ 46.421613][ C0] [ 46.421687][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.421965][ C0] RIP: 0010:default_idle+0xf/0x20 [ 46.422120][ 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 [ 46.422734][ C0] RSP: 0018:ffffffffb7407e00 EFLAGS: 00000246 [ 46.422927][ C0] RAX: 0000000000095d63 RBX: 1ffffffff6e80fc2 RCX: ffffffffb650e9d5 [ 46.423147][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb3eaa4a4 [ 46.423368][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0709c [ 46.423591][ C0] R10: ffff8880360384e3 R11: ffff88803602d9b0 R12: 0000000000000000 [ 46.423812][ C0] R13: ffffffffb741d000 R14: dffffc0000000000 R15: 0000000000014770 [ 46.424126][ C0] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 46.424272][ C0] ? cpuidle_idle_call+0x1f4/0x280 [ 46.424418][ C0] default_idle_call+0x6d/0xb0 [ 46.424562][ C0] cpuidle_idle_call+0x1f4/0x280 [ 46.424795][ C0] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 46.424940][ C0] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 46.425096][ C0] do_idle+0xf9/0x160 [ 46.425217][ C0] cpu_startup_entry+0x54/0x60 [ 46.425456][ C0] rest_init+0x14f/0x260 [ 46.425567][ C0] start_kernel+0x318/0x3d0 [ 46.425721][ C0] x86_64_start_reservations+0x18/0x30 [ 46.425866][ C0] x86_64_start_kernel+0xba/0x110 [ 46.426011][ C0] common_startup_64+0x12c/0x138 [ 46.426398][ C0] [ 47.356521][ T352] veth3: entered promiscuous mode [ 47.863704][ T358] GACT probability NOT on [ 49.634362][ T365] veth3: left promiscuous mode [ 49.727443][ T366] veth3: entered promiscuous mode [ 51.538704][ T375] veth3: left promiscuous mode [ 51.638772][ T377] br0: port 3(veth4) entered disabled state [ 51.779159][ T378] br0: port 2(veth2) entered disabled state [ 51.874000][ T379] br0: port 1(veth1) entered disabled state [ 51.984945][ T380] veth4: left allmulticast mode [ 51.985188][ T380] veth4: left promiscuous mode [ 51.985571][ T380] br0: port 3(veth4) entered disabled state [ 51.987073][ T380] veth2: left allmulticast mode [ 51.987300][ T380] veth2: left promiscuous mode [ 51.989688][ T380] br0: port 2(veth2) entered disabled state [ 51.991041][ T380] veth1: left allmulticast mode [ 51.991244][ T380] veth1: left promiscuous mode [ 51.992350][ T380] br0: port 1(veth1) entered disabled state