[ 24.726402][ T234] ip (234) used greatest stack depth: 24352 bytes left [ 29.569905][ T291] br1: port 1(veth1) entered blocking state [ 29.570401][ T291] br1: port 1(veth1) entered disabled state [ 29.570723][ T291] veth1: entered allmulticast mode [ 29.572715][ T291] veth1: entered promiscuous mode [ 29.692393][ T49] br1: port 1(veth1) entered blocking state [ 29.692812][ T49] br1: port 1(veth1) entered forwarding state [ 29.823623][ T293] br1: port 2(veth2) entered blocking state [ 29.823982][ T293] br1: port 2(veth2) entered disabled state [ 29.824255][ T293] veth2: entered allmulticast mode [ 29.826628][ T293] veth2: entered promiscuous mode [ 29.948522][ T7] br1: port 2(veth2) entered blocking state [ 29.949035][ T7] br1: port 2(veth2) entered forwarding state [ 39.386405][ T325] GACT probability NOT on [ 40.309962][ T334] tc (334) used greatest stack depth: 24064 bytes left [ 44.844612][ C1] [ 44.844757][ C1] ======================================================== [ 44.845047][ C1] WARNING: possible irq lock inversion dependency detected [ 44.845354][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 44.845568][ C1] -------------------------------------------------------- [ 44.845848][ C1] ksoftirqd/1/23 just changed the state of lock: [ 44.846090][ C1] ffff888008c4ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.846607][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.846897][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 44.846904][ C1] [ 44.846904][ C1] [ 44.846904][ C1] and interrupts could create inverse lock ordering between them. [ 44.846904][ C1] [ 44.847619][ C1] [ 44.847619][ C1] other info that might help us debug this: [ 44.847914][ C1] Chain exists of: [ 44.847914][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.847914][ C1] [ 44.848354][ C1] Possible interrupt unsafe locking scenario: [ 44.848354][ C1] [ 44.848639][ C1] CPU0 CPU1 [ 44.848841][ C1] ---- ---- [ 44.849034][ C1] lock(&p->alloc_lock); [ 44.849190][ C1] local_irq_disable(); [ 44.849434][ C1] lock(&br->lock); [ 44.849684][ C1] lock(lweventlist_lock); [ 44.849928][ C1] [ 44.850076][ C1] lock(&br->lock); [ 44.850228][ C1] [ 44.850228][ C1] *** DEADLOCK *** [ 44.850228][ C1] [ 44.850509][ C1] 1 lock held by ksoftirqd/1/23: [ 44.850707][ C1] #0: ffffc900001afc20 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.851125][ C1] [ 44.851125][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 44.851452][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.851656][ C1] HARDIRQ-ON-W at: [ 44.851811][ C1] __lock_acquire+0x797/0x1570 [ 44.852074][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.852315][ C1] _raw_spin_lock+0x30/0x40 [ 44.852570][ C1] set_mems_allowed+0x1d/0x210 [ 44.852818][ C1] kernel_init_freeable+0x72/0x310 [ 44.853063][ C1] kernel_init+0x20/0x200 [ 44.853313][ C1] ret_from_fork+0x31/0x70 [ 44.853567][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.853815][ C1] SOFTIRQ-ON-W at: [ 44.853971][ C1] __lock_acquire+0x797/0x1570 [ 44.854216][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.854471][ C1] _raw_spin_lock+0x30/0x40 [ 44.854708][ C1] set_mems_allowed+0x1d/0x210 [ 44.854943][ C1] kernel_init_freeable+0x72/0x310 [ 44.855181][ C1] kernel_init+0x20/0x200 [ 44.855420][ C1] ret_from_fork+0x31/0x70 [ 44.855661][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.855891][ C1] INITIAL USE at: [ 44.856036][ C1] __lock_acquire+0x797/0x1570 [ 44.856274][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.856512][ C1] _raw_spin_lock+0x30/0x40 [ 44.856751][ C1] set_mems_allowed+0x1d/0x210 [ 44.857002][ C1] kernel_init_freeable+0x72/0x310 [ 44.857237][ C1] kernel_init+0x20/0x200 [ 44.857474][ C1] ret_from_fork+0x31/0x70 [ 44.857716][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.857960][ C1] } [ 44.858060][ C1] ... key at: [] __key.387+0x0/0x40 [ 44.858353][ C1] ... acquired at: [ 44.858499][ C1] __lock_acquire+0xaf0/0x1570 [ 44.858698][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.858893][ C1] _raw_spin_lock+0x30/0x40 [ 44.859084][ C1] __get_task_comm+0x27/0x70 [ 44.859286][ C1] ref_tracker_alloc+0x2ee/0x490 [ 44.859493][ C1] linkwatch_fire_event+0x196/0x200 [ 44.859716][ C1] veth_newlink+0x367/0x830 [veth] [ 44.859931][ C1] rtnl_newlink_create+0x341/0x850 [ 44.860124][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.860322][ C1] rtnl_newlink+0x63/0xa0 [ 44.860515][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.860704][ C1] netlink_rcv_skb+0x130/0x360 [ 44.860900][ C1] netlink_unicast+0x449/0x710 [ 44.861096][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.861292][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.861487][ C1] ___sys_sendmsg+0xee/0x170 [ 44.861681][ C1] __sys_sendmsg+0xcd/0x170 [ 44.861881][ C1] do_syscall_64+0xc6/0x1e0 [ 44.862083][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.862323][ C1] [ 44.862421][ C1] -> (lweventlist_lock){....}-{2:2} { [ 44.862627][ C1] INITIAL USE at: [ 44.862772][ C1] __lock_acquire+0x797/0x1570 [ 44.863011][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.863254][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.863496][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 44.863740][ C1] rtnl_getlink+0x4c9/0x970 [ 44.863985][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.864217][ C1] netlink_rcv_skb+0x130/0x360 [ 44.864471][ C1] netlink_unicast+0x449/0x710 [ 44.864708][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.864945][ C1] __sys_sendto+0x37d/0x410 [ 44.865195][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 44.865429][ C1] do_syscall_64+0xc6/0x1e0 [ 44.865670][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.865953][ C1] } [ 44.866053][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.866329][ C1] ... acquired at: [ 44.866470][ C1] __lock_acquire+0xaf0/0x1570 [ 44.866662][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.866853][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.867045][ C1] linkwatch_fire_event+0x74/0x200 [ 44.867237][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.867545][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.867847][ C1] dev_set_mac_address+0x28a/0x410 [ 44.868044][ C1] dev_set_mac_address_user+0x31/0x50 [ 44.868229][ C1] do_setlink+0x17b4/0x21e0 [ 44.868434][ C1] rtnl_setlink+0x1f7/0x310 [ 44.868644][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.868834][ C1] netlink_rcv_skb+0x130/0x360 [ 44.869026][ C1] netlink_unicast+0x449/0x710 [ 44.869215][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.869409][ C1] __sys_sendto+0x37d/0x410 [ 44.869604][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 44.869801][ C1] do_syscall_64+0xc6/0x1e0 [ 44.870000][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.870244][ C1] [ 44.870339][ C1] -> (&br->lock){+.-.}-{2:2} { [ 44.870531][ C1] HARDIRQ-ON-W at: [ 44.870669][ C1] __lock_acquire+0x797/0x1570 [ 44.870912][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.871151][ C1] _raw_spin_lock_bh+0x38/0x50 [ 44.871389][ C1] recalculate_group_addr+0x55/0x130 [bridge] [ 44.871734][ C1] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 44.872081][ C1] br_changelink+0x36c/0x1360 [bridge] [ 44.872373][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 44.872668][ C1] rtnl_newlink_create+0x341/0x850 [ 44.872912][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.873147][ C1] rtnl_newlink+0x63/0xa0 [ 44.873378][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.873611][ C1] netlink_rcv_skb+0x130/0x360 [ 44.873849][ C1] netlink_unicast+0x449/0x710 [ 44.874081][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.874315][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.874594][ C1] ___sys_sendmsg+0xee/0x170 [ 44.874839][ C1] __sys_sendmsg+0xcd/0x170 [ 44.875086][ C1] do_syscall_64+0xc6/0x1e0 [ 44.875328][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.875621][ C1] IN-SOFTIRQ-W at: [ 44.875767][ C1] __lock_acquire+0x797/0x1570 [ 44.875999][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.876240][ C1] _raw_spin_lock+0x30/0x40 [ 44.876474][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.876824][ C1] call_timer_fn+0x13b/0x230 [ 44.877066][ C1] __run_timers+0x545/0x810 [ 44.877300][ C1] run_timer_softirq+0xe8/0x1b0 [ 44.877549][ C1] __do_softirq+0x1f8/0x5df [ 44.877786][ C1] run_ksoftirqd+0x2e/0x60 [ 44.878015][ C1] smpboot_thread_fn+0x306/0x840 [ 44.878248][ C1] kthread+0x28a/0x350 [ 44.878445][ C1] ret_from_fork+0x31/0x70 [ 44.878689][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.878937][ C1] INITIAL USE at: [ 44.879080][ C1] __lock_acquire+0x797/0x1570 [ 44.879321][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.879566][ C1] _raw_spin_lock_bh+0x38/0x50 [ 44.879799][ C1] recalculate_group_addr+0x55/0x130 [bridge] [ 44.880149][ C1] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 44.880495][ C1] br_changelink+0x36c/0x1360 [bridge] [ 44.880805][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 44.881105][ C1] rtnl_newlink_create+0x341/0x850 [ 44.881354][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.881603][ C1] rtnl_newlink+0x63/0xa0 [ 44.881847][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.882085][ C1] netlink_rcv_skb+0x130/0x360 [ 44.882326][ C1] netlink_unicast+0x449/0x710 [ 44.882559][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.882913][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.883154][ C1] ___sys_sendmsg+0xee/0x170 [ 44.883529][ C1] __sys_sendmsg+0xcd/0x170 [ 44.883770][ C1] do_syscall_64+0xc6/0x1e0 [ 44.884008][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.884291][ C1] } [ 44.884516][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.884898][ C1] ... acquired at: [ 44.885045][ C1] mark_lock+0x28d/0x3e0 [ 44.885354][ C1] mark_usage+0xd9/0x2a0 [ 44.885541][ C1] __lock_acquire+0x797/0x1570 [ 44.885732][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.885920][ C1] _raw_spin_lock+0x30/0x40 [ 44.886228][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.886530][ C1] call_timer_fn+0x13b/0x230 [ 44.886730][ C1] __run_timers+0x545/0x810 [ 44.886919][ C1] run_timer_softirq+0xe8/0x1b0 [ 44.887226][ C1] __do_softirq+0x1f8/0x5df [ 44.887419][ C1] run_ksoftirqd+0x2e/0x60 [ 44.887613][ C1] smpboot_thread_fn+0x306/0x840 [ 44.887802][ C1] kthread+0x28a/0x350 [ 44.887948][ C1] ret_from_fork+0x31/0x70 [ 44.888256][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.888460][ C1] [ 44.888556][ C1] [ 44.888556][ C1] stack backtrace: [ 44.888781][ C1] CPU: 1 PID: 23 Comm: ksoftirqd/1 Not tainted 6.9.0-rc1-virtme #1 [ 44.889176][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.889720][ C1] Call Trace: [ 44.889868][ C1] [ 44.889991][ C1] dump_stack_lvl+0x82/0xd0 [ 44.890201][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.890457][ C1] ? kernel_text_address+0x17/0xe0 [ 44.890671][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.891193][ C1] ? __pfx_usage_skip+0x10/0x10 [ 44.891399][ C1] ? __pfx_usage_match+0x10/0x10 [ 44.891590][ C1] ? arch_stack_walk+0x8c/0xf0 [ 44.891804][ C1] mark_lock_irq+0x4cd/0xa10 [ 44.892013][ C1] ? ret_from_fork_asm+0x1a/0x30 [ 44.892217][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.892422][ C1] ? __pfx_stack_trace_save+0x10/0x10 [ 44.892628][ C1] ? add_chain_cache+0x248/0x8b0 [ 44.892835][ C1] ? save_trace+0x8f/0x5b0 [ 44.893166][ C1] mark_lock+0x28d/0x3e0 [ 44.893342][ C1] mark_usage+0xd9/0x2a0 [ 44.893501][ C1] __lock_acquire+0x797/0x1570 [ 44.893715][ C1] ? __lock_acquire+0xaf0/0x1570 [ 44.894045][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.894425][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.894631][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.894956][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.895285][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 44.895493][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.895819][ C1] ? lock_acquire+0x32/0xc0 [ 44.896156][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.896611][ C1] _raw_spin_lock+0x30/0x40 [ 44.896815][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.897276][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.897605][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.897978][ C1] call_timer_fn+0x13b/0x230 [ 44.898315][ C1] ? call_timer_fn+0xe8/0x230 [ 44.898521][ C1] ? call_timer_fn+0xe8/0x230 [ 44.898858][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 44.899059][ C1] ? mark_lock+0x38/0x3e0 [ 44.899220][ C1] __run_timers+0x545/0x810 [ 44.899435][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.899944][ C1] ? __pfx___run_timers+0x10/0x10 [ 44.900283][ C1] ? do_raw_spin_lock+0x131/0x270 [ 44.900486][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.900691][ C1] ? lock_acquire+0x32/0xc0 [ 44.901024][ C1] ? run_timer_softirq+0xe0/0x1b0 [ 44.901253][ C1] run_timer_softirq+0xe8/0x1b0 [ 44.901471][ C1] __do_softirq+0x1f8/0x5df [ 44.901675][ C1] ? __pfx_run_ksoftirqd+0x10/0x10 [ 44.901881][ C1] run_ksoftirqd+0x2e/0x60 [ 44.902216][ C1] smpboot_thread_fn+0x306/0x840 [ 44.902548][ C1] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 44.902756][ C1] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 44.902961][ C1] kthread+0x28a/0x350 [ 44.903245][ C1] ? __pfx_kthread+0x10/0x10 [ 44.903450][ C1] ret_from_fork+0x31/0x70 [ 44.903652][ C1] ? __pfx_kthread+0x10/0x10 [ 44.903867][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.904208][ C1] [ 136.321074][ T1616] br1: port 2(veth2) entered disabled state [ 136.425277][ T1618] veth2: left allmulticast mode [ 136.425484][ T1618] veth2: left promiscuous mode [ 136.425755][ T1618] br1: port 2(veth2) entered disabled state [ 136.528052][ T1619] br1: port 1(veth1) entered disabled state [ 136.623155][ T1621] veth1: left allmulticast mode [ 136.623442][ T1621] veth1: left promiscuous mode [ 136.623699][ T1621] br1: port 1(veth1) entered disabled state