[ 28.037619][ T285] br0: port 1(veth1) entered blocking state [ 28.038004][ T285] br0: port 1(veth1) entered disabled state [ 28.038328][ T285] veth1: entered allmulticast mode [ 28.041516][ T285] veth1: entered promiscuous mode [ 28.164720][ T287] br0: port 2(veth2) entered blocking state [ 28.165173][ T287] br0: port 2(veth2) entered disabled state [ 28.165584][ T287] veth2: entered allmulticast mode [ 28.168688][ T287] veth2: entered promiscuous mode [ 28.404264][ T50] br0: port 1(veth1) entered blocking state [ 28.404635][ T50] br0: port 1(veth1) entered forwarding state [ 38.985737][ T51] br0: port 2(veth2) entered blocking state [ 38.986060][ T51] br0: port 2(veth2) entered forwarding state [ 43.830393][ C2] [ 43.830601][ C2] ======================================================== [ 43.830822][ C2] WARNING: possible irq lock inversion dependency detected [ 43.831026][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 43.831164][ C2] -------------------------------------------------------- [ 43.831369][ C2] swapper/2/0 just changed the state of lock: [ 43.831533][ C2] ffff88800668ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.831867][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 43.832067][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 43.832071][ C2] [ 43.832071][ C2] [ 43.832071][ C2] and interrupts could create inverse lock ordering between them. [ 43.832071][ C2] [ 43.832561][ C2] [ 43.832561][ C2] other info that might help us debug this: [ 43.832769][ C2] Chain exists of: [ 43.832769][ C2] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 43.832769][ C2] [ 43.833076][ C2] Possible interrupt unsafe locking scenario: [ 43.833076][ C2] [ 43.833270][ C2] CPU0 CPU1 [ 43.833402][ C2] ---- ---- [ 43.833539][ C2] lock(&p->alloc_lock); [ 43.833647][ C2] local_irq_disable(); [ 43.833809][ C2] lock(&br->lock); [ 43.834028][ C2] lock(lweventlist_lock); [ 43.834255][ C2] [ 43.834369][ C2] lock(&br->lock); [ 43.834480][ C2] [ 43.834480][ C2] *** DEADLOCK *** [ 43.834480][ C2] [ 43.834731][ C2] 1 lock held by swapper/2/0: [ 43.834943][ C2] #0: ffffc90000230d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 43.835382][ C2] [ 43.835382][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 43.835651][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 43.835793][ C2] HARDIRQ-ON-W at: [ 43.835937][ C2] __lock_acquire+0x797/0x1570 [ 43.836114][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.836289][ C2] _raw_spin_lock+0x30/0x40 [ 43.836459][ C2] set_mems_allowed+0x1d/0x210 [ 43.836630][ C2] kernel_init_freeable+0x72/0x310 [ 43.836798][ C2] kernel_init+0x20/0x200 [ 43.836973][ C2] ret_from_fork+0x31/0x70 [ 43.837143][ C2] ret_from_fork_asm+0x1a/0x30 [ 43.837315][ C2] SOFTIRQ-ON-W at: [ 43.837416][ C2] __lock_acquire+0x797/0x1570 [ 43.837587][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.837755][ C2] _raw_spin_lock+0x30/0x40 [ 43.837942][ C2] set_mems_allowed+0x1d/0x210 [ 43.838113][ C2] kernel_init_freeable+0x72/0x310 [ 43.838285][ C2] kernel_init+0x20/0x200 [ 43.838452][ C2] ret_from_fork+0x31/0x70 [ 43.838623][ C2] ret_from_fork_asm+0x1a/0x30 [ 43.838793][ C2] INITIAL USE at: [ 43.838893][ C2] __lock_acquire+0x797/0x1570 [ 43.839060][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.839233][ C2] _raw_spin_lock+0x30/0x40 [ 43.839404][ C2] set_mems_allowed+0x1d/0x210 [ 43.839570][ C2] kernel_init_freeable+0x72/0x310 [ 43.839754][ C2] kernel_init+0x20/0x200 [ 43.839926][ C2] ret_from_fork+0x31/0x70 [ 43.840092][ C2] ret_from_fork_asm+0x1a/0x30 [ 43.840268][ C2] } [ 43.840342][ C2] ... key at: [] __key.387+0x0/0x40 [ 43.840546][ C2] ... acquired at: [ 43.840646][ C2] __lock_acquire+0xaf0/0x1570 [ 43.840781][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.840914][ C2] _raw_spin_lock+0x30/0x40 [ 43.841049][ C2] __get_task_comm+0x27/0x70 [ 43.841184][ C2] ref_tracker_alloc+0x2ee/0x490 [ 43.841323][ C2] linkwatch_fire_event+0x196/0x200 [ 43.841462][ C2] veth_newlink+0x367/0x830 [veth] [ 43.841607][ C2] rtnl_newlink_create+0x341/0x850 [ 43.841740][ C2] __rtnl_newlink+0xac9/0xd80 [ 43.841872][ C2] rtnl_newlink+0x63/0xa0 [ 43.842005][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.842138][ C2] netlink_rcv_skb+0x130/0x360 [ 43.842279][ C2] netlink_unicast+0x449/0x710 [ 43.842422][ C2] netlink_sendmsg+0x723/0xbe0 [ 43.842559][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 43.842697][ C2] ___sys_sendmsg+0xee/0x170 [ 43.842834][ C2] __sys_sendmsg+0xcd/0x170 [ 43.842979][ C2] do_syscall_64+0xc6/0x1e0 [ 43.843114][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.843285][ C2] [ 43.843355][ C2] -> (lweventlist_lock){....}-{2:2} { [ 43.843490][ C2] INITIAL USE at: [ 43.843595][ C2] __lock_acquire+0x797/0x1570 [ 43.843762][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.843933][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.844099][ C2] linkwatch_sync_dev+0x29/0x1f0 [ 43.844267][ C2] rtnl_getlink+0x4c9/0x970 [ 43.844437][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.844611][ C2] netlink_rcv_skb+0x130/0x360 [ 43.844777][ C2] netlink_unicast+0x449/0x710 [ 43.844944][ C2] netlink_sendmsg+0x723/0xbe0 [ 43.845110][ C2] __sys_sendto+0x37d/0x410 [ 43.845280][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 43.845445][ C2] do_syscall_64+0xc6/0x1e0 [ 43.845624][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.845822][ C2] } [ 43.845890][ C2] ... key at: [] lweventlist_lock+0x18/0x60 [ 43.846088][ C2] ... acquired at: [ 43.846189][ C2] __lock_acquire+0xaf0/0x1570 [ 43.846321][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.846453][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.846589][ C2] linkwatch_fire_event+0x74/0x200 [ 43.846727][ C2] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 43.846938][ C2] br_set_mac_address+0x1f3/0x260 [bridge] [ 43.847138][ C2] dev_set_mac_address+0x28a/0x410 [ 43.847273][ C2] dev_set_mac_address_user+0x31/0x50 [ 43.847409][ C2] do_setlink+0x17b4/0x21e0 [ 43.847540][ C2] rtnl_setlink+0x1f7/0x310 [ 43.847673][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.847809][ C2] netlink_rcv_skb+0x130/0x360 [ 43.847943][ C2] netlink_unicast+0x449/0x710 [ 43.848076][ C2] netlink_sendmsg+0x723/0xbe0 [ 43.848209][ C2] __sys_sendto+0x37d/0x410 [ 43.848343][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 43.848477][ C2] do_syscall_64+0xc6/0x1e0 [ 43.848613][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.848779][ C2] [ 43.848846][ C2] -> (&br->lock){+.-.}-{2:2} { [ 43.848990][ C2] HARDIRQ-ON-W at: [ 43.849092][ C2] __lock_acquire+0x797/0x1570 [ 43.849263][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.849431][ C2] _raw_spin_lock_bh+0x38/0x50 [ 43.849601][ C2] br_set_mac_address+0xd2/0x260 [bridge] [ 43.849864][ C2] dev_set_mac_address+0x28a/0x410 [ 43.850031][ C2] dev_set_mac_address_user+0x31/0x50 [ 43.850203][ C2] do_setlink+0x17b4/0x21e0 [ 43.850374][ C2] rtnl_setlink+0x1f7/0x310 [ 43.850547][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.850715][ C2] netlink_rcv_skb+0x130/0x360 [ 43.850885][ C2] netlink_unicast+0x449/0x710 [ 43.851054][ C2] netlink_sendmsg+0x723/0xbe0 [ 43.851231][ C2] __sys_sendto+0x37d/0x410 [ 43.851398][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 43.851567][ C2] do_syscall_64+0xc6/0x1e0 [ 43.851735][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.851931][ C2] IN-SOFTIRQ-W at: [ 43.852033][ C2] __lock_acquire+0x797/0x1570 [ 43.852200][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.852373][ C2] _raw_spin_lock+0x30/0x40 [ 43.852548][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.852788][ C2] call_timer_fn+0x13b/0x230 [ 43.852957][ C2] __run_timers+0x545/0x810 [ 43.853123][ C2] run_timer_softirq+0xe8/0x1b0 [ 43.853305][ C2] __do_softirq+0x1f8/0x5df [ 43.853477][ C2] irq_exit_rcu+0x97/0xc0 [ 43.853644][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.853847][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.854048][ C2] default_idle+0xf/0x20 [ 43.854213][ C2] default_idle_call+0x6d/0xb0 [ 43.854383][ C2] cpuidle_idle_call+0x1f4/0x280 [ 43.854552][ C2] do_idle+0xf9/0x160 [ 43.854687][ C2] cpu_startup_entry+0x54/0x60 [ 43.854860][ C2] start_secondary+0x21c/0x2b0 [ 43.855029][ C2] common_startup_64+0x12c/0x138 [ 43.855197][ C2] INITIAL USE at: [ 43.855297][ C2] __lock_acquire+0x797/0x1570 [ 43.855465][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.855636][ C2] _raw_spin_lock_bh+0x38/0x50 [ 43.855802][ C2] br_set_mac_address+0xd2/0x260 [bridge] [ 43.856038][ C2] dev_set_mac_address+0x28a/0x410 [ 43.856214][ C2] dev_set_mac_address_user+0x31/0x50 [ 43.856382][ C2] do_setlink+0x17b4/0x21e0 [ 43.856549][ C2] rtnl_setlink+0x1f7/0x310 [ 43.856718][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.856887][ C2] netlink_rcv_skb+0x130/0x360 [ 43.857055][ C2] netlink_unicast+0x449/0x710 [ 43.857221][ C2] netlink_sendmsg+0x723/0xbe0 [ 43.857394][ C2] __sys_sendto+0x37d/0x410 [ 43.857562][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 43.857728][ C2] do_syscall_64+0xc6/0x1e0 [ 43.857898][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.858097][ C2] } [ 43.858164][ C2] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 43.858427][ C2] ... acquired at: [ 43.858527][ C2] mark_lock+0x28d/0x3e0 [ 43.858667][ C2] mark_usage+0xd9/0x2a0 [ 43.858800][ C2] __lock_acquire+0x797/0x1570 [ 43.858932][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.859148][ C2] _raw_spin_lock+0x30/0x40 [ 43.859281][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.859483][ C2] call_timer_fn+0x13b/0x230 [ 43.859615][ C2] __run_timers+0x545/0x810 [ 43.859850][ C2] run_timer_softirq+0xe8/0x1b0 [ 43.859982][ C2] __do_softirq+0x1f8/0x5df [ 43.860114][ C2] irq_exit_rcu+0x97/0xc0 [ 43.860245][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.860496][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.860662][ C2] default_idle+0xf/0x20 [ 43.860798][ C2] default_idle_call+0x6d/0xb0 [ 43.860930][ C2] cpuidle_idle_call+0x1f4/0x280 [ 43.861138][ C2] do_idle+0xf9/0x160 [ 43.861238][ C2] cpu_startup_entry+0x54/0x60 [ 43.861369][ C2] start_secondary+0x21c/0x2b0 [ 43.861501][ C2] common_startup_64+0x12c/0x138 [ 43.861638][ C2] [ 43.861778][ C2] [ 43.861778][ C2] stack backtrace: [ 43.861943][ C2] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-virtme #1 [ 43.862141][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 43.862509][ C2] Call Trace: [ 43.862610][ C2] [ 43.862680][ C2] dump_stack_lvl+0x82/0xd0 [ 43.862836][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 43.863085][ C2] ? common_startup_64+0x12c/0x138 [ 43.863218][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 43.863383][ C2] ? __pfx_usage_skip+0x10/0x10 [ 43.863515][ C2] ? __pfx_usage_match+0x10/0x10 [ 43.863723][ C2] ? arch_stack_walk+0x8c/0xf0 [ 43.863858][ C2] mark_lock_irq+0x4cd/0xa10 [ 43.864007][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 43.864144][ C2] ? stack_trace_save+0x94/0xd0 [ 43.864284][ C2] ? add_chain_cache+0x248/0x8b0 [ 43.864493][ C2] ? save_trace+0x8f/0x5b0 [ 43.864626][ C2] mark_lock+0x28d/0x3e0 [ 43.864727][ C2] mark_usage+0xd9/0x2a0 [ 43.864835][ C2] __lock_acquire+0x797/0x1570 [ 43.865049][ C2] ? __lock_acquire+0xaf0/0x1570 [ 43.865181][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.865417][ C2] lock_acquire.part.0+0xeb/0x330 [ 43.865556][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.865845][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 43.865977][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 43.866109][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.866314][ C2] ? lock_acquire+0x32/0xc0 [ 43.866527][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.866729][ C2] _raw_spin_lock+0x30/0x40 [ 43.866867][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.867067][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.867351][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.867584][ C2] call_timer_fn+0x13b/0x230 [ 43.867716][ C2] ? call_timer_fn+0xe8/0x230 [ 43.867929][ C2] ? call_timer_fn+0xe8/0x230 [ 43.868062][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 43.868200][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 43.868341][ C2] __run_timers+0x545/0x810 [ 43.868550][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.868784][ C2] ? __pfx___run_timers+0x10/0x10 [ 43.868922][ C2] ? do_raw_spin_lock+0x131/0x270 [ 43.869054][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 43.869356][ C2] ? lock_acquire+0x32/0xc0 [ 43.869493][ C2] ? run_timer_softirq+0xe0/0x1b0 [ 43.869645][ C2] run_timer_softirq+0xe8/0x1b0 [ 43.869779][ C2] __do_softirq+0x1f8/0x5df [ 43.869913][ C2] irq_exit_rcu+0x97/0xc0 [ 43.870015][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.870148][ C2] [ 43.870217][ C2] [ 43.870283][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.870447][ C2] RIP: 0010:default_idle+0xf/0x20 [ 43.870593][ C2] 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 [ 43.871074][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000246 [ 43.871243][ C2] RAX: 00000000000c73e7 RBX: 1ffff9200002bfc1 RCX: ffffffffaef0e9d5 [ 43.871442][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffac8aa4a4 [ 43.871726][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2709c [ 43.871925][ C2] R10: ffff8880361384e3 R11: ffff88803612d9b0 R12: 0000000000000000 [ 43.872134][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 43.872419][ C2] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 43.872553][ C2] ? cpuidle_idle_call+0x1f4/0x280 [ 43.872686][ C2] default_idle_call+0x6d/0xb0 [ 43.872822][ C2] cpuidle_idle_call+0x1f4/0x280 [ 43.873036][ C2] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 43.873171][ C2] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 43.873310][ C2] do_idle+0xf9/0x160 [ 43.873414][ C2] cpu_startup_entry+0x54/0x60 [ 43.873601][ C2] start_secondary+0x21c/0x2b0 [ 43.873835][ C2] ? __pfx_start_secondary+0x10/0x10 [ 43.873986][ C2] common_startup_64+0x12c/0x138 [ 43.874154][ C2] [ 44.694754][ T304] GACT probability NOT on [ 46.524604][ T311] br0: port 2(veth2) entered disabled state [ 46.789309][ T7] br0: port 2(veth2) entered blocking state [ 46.789533][ T7] br0: port 2(veth2) entered forwarding state [ 53.862436][ T328] br0: port 1(veth1) entered disabled state [ 53.956938][ T329] br0: port 2(veth2) entered disabled state [ 54.053138][ T330] veth2: left allmulticast mode [ 54.053883][ T330] veth2: left promiscuous mode [ 54.054144][ T330] br0: port 2(veth2) entered disabled state [ 54.055066][ T330] veth1: left allmulticast mode [ 54.055204][ T330] veth1: left promiscuous mode [ 54.055455][ T330] br0: port 1(veth1) entered disabled state