[ 16.326124][ T341] ip (341) used greatest stack depth: 24032 bytes left [ 30.472681][ T530] ip (530) used greatest stack depth: 23424 bytes left [ 33.895037][ T580] [ 33.895236][ T580] ============================================ [ 33.895438][ T580] WARNING: possible recursive locking detected [ 33.895633][ T580] 6.13.0-rc5-virtme #1 Not tainted [ 33.895787][ T580] -------------------------------------------- [ 33.895976][ T580] ip/580 is trying to acquire lock: [ 33.896129][ T580] ffffffff8e5f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 33.896456][ T580] [ 33.896456][ T580] but task is already holding lock: [ 33.896699][ T580] ffffffff8e5f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 33.897020][ T580] [ 33.897020][ T580] other info that might help us debug this: [ 33.897249][ T580] Possible unsafe locking scenario: [ 33.897249][ T580] [ 33.897476][ T580] CPU0 [ 33.897597][ T580] ---- [ 33.897718][ T580] lock((netdev_chain).rwsem); [ 33.897878][ T580] lock((netdev_chain).rwsem); [ 33.898036][ T580] [ 33.898036][ T580] *** DEADLOCK *** [ 33.898036][ T580] [ 33.898268][ T580] May be due to missing lock nesting notation [ 33.898268][ T580] [ 33.898501][ T580] 2 locks held by ip/580: [ 33.898630][ T580] #0: ffffffff8e607e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 33.898921][ T580] #1: ffffffff8e5f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 33.899232][ T580] [ 33.899232][ T580] stack backtrace: [ 33.899422][ T580] CPU: 0 UID: 0 PID: 580 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 33.899653][ T580] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 33.899848][ T580] Call Trace: [ 33.899966][ T580] [ 33.900047][ T580] dump_stack_lvl+0x82/0xd0 [ 33.900211][ T580] print_deadlock_bug+0x40a/0x650 [ 33.900371][ T580] validate_chain+0x5bf/0xae0 [ 33.900528][ T580] ? __pfx_validate_chain+0x10/0x10 [ 33.900704][ T580] ? hlock_class+0x4e/0x130 [ 33.900860][ T580] ? mark_lock+0x38/0x3e0 [ 33.900980][ T580] __lock_acquire+0xb9a/0x1680 [ 33.901140][ T580] lock_acquire.part.0+0xeb/0x330 [ 33.901297][ T580] ? blocking_notifier_call_chain+0x50/0x90 [ 33.901492][ T580] ? __lock_acquire+0xb9a/0x1680 [ 33.901650][ T580] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 33.901811][ T580] ? trace_lock_acquire+0x14c/0x1f0 [ 33.901970][ T580] ? lock_acquire+0x32/0xc0 [ 33.902127][ T580] ? blocking_notifier_call_chain+0x50/0x90 [ 33.902321][ T580] down_read+0x9f/0x340 [ 33.902443][ T580] ? blocking_notifier_call_chain+0x50/0x90 [ 33.902643][ T580] ? __pfx_down_read+0x10/0x10 [ 33.902801][ T580] ? __lock_release+0x103/0x460 [ 33.902960][ T580] blocking_notifier_call_chain+0x50/0x90 [ 33.903127][ T580] __netdev_upper_dev_unlink+0xd9/0x220 [ 33.903284][ T580] ? mark_held_locks+0x9e/0xe0 [ 33.903438][ T580] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 33.903651][ T580] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 33.903868][ T580] ? __try_to_del_timer_sync+0xe7/0x140 [ 33.904029][ T580] ? __pfx___try_to_del_timer_sync+0x10/0x10 [ 33.904226][ T580] ? mark_held_locks+0x9e/0xe0 [ 33.904384][ T580] netdev_upper_dev_unlink+0x71/0xa0 [ 33.904543][ T580] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 33.904738][ T580] ? mutex_is_locked+0x1c/0x60 [ 33.904893][ T580] ? rtnl_is_locked+0x15/0x20 [ 33.905055][ T580] ? netdev_master_upper_dev_get+0x13/0x120 [ 33.905250][ T580] vrf_device_event+0x78/0xe0 [ 33.905409][ T580] notifier_call_chain+0xcd/0x150 [ 33.905567][ T580] blocking_notifier_call_chain+0x66/0x90 [ 33.905724][ T580] unregister_netdevice_many_notify+0xa83/0x1580 [ 33.905931][ T580] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 33.906119][ T580] ? rtnl_dellink+0x228/0xa40 [ 33.906290][ T580] ? sock_def_readable+0x11e/0x300 [ 33.906450][ T580] ? __pfx___mutex_lock+0x10/0x10 [ 33.906606][ T580] ? rtnl_is_locked+0x15/0x20 [ 33.906766][ T580] ? unregister_netdevice_queue+0x70/0x410 [ 33.906962][ T580] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 33.907158][ T580] ? __nla_validate_parse+0x48/0x3d0 [ 33.907317][ T580] rtnl_dellink+0x348/0xa40 [ 33.907480][ T580] ? __pfx_rtnl_dellink+0x10/0x10 [ 33.907659][ T580] ? find_held_lock+0x2c/0x110 [ 33.907813][ T580] ? __lock_release+0x103/0x460 [ 33.907964][ T580] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 33.908117][ T580] ? __pfx___lock_release+0x10/0x10 [ 33.908270][ T580] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 33.908428][ T580] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 33.908583][ T580] ? __pfx_rtnl_dellink+0x10/0x10 [ 33.908751][ T580] rtnetlink_rcv_msg+0x712/0xc10 [ 33.908908][ T580] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 33.909066][ T580] ? hlock_class+0x4e/0x130 [ 33.909221][ T580] ? mark_lock+0x38/0x3e0 [ 33.909341][ T580] ? __lock_acquire+0xb9a/0x1680 [ 33.909501][ T580] netlink_rcv_skb+0x130/0x360 [ 33.909662][ T580] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 33.909821][ T580] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 33.910006][ T580] ? netlink_deliver_tap+0x13e/0x340 [ 33.910164][ T580] ? netlink_deliver_tap+0xc3/0x340 [ 33.910323][ T580] netlink_unicast+0x44b/0x710 [ 33.910481][ T580] ? __pfx_netlink_unicast+0x10/0x10 [ 33.910637][ T580] ? find_held_lock+0x2c/0x110 [ 33.910797][ T580] netlink_sendmsg+0x723/0xbe0 [ 33.910955][ T580] ? __pfx_netlink_sendmsg+0x10/0x10 [ 33.911115][ T580] ____sys_sendmsg+0x7ac/0xa10 [ 33.911275][ T580] ? __pfx_____sys_sendmsg+0x10/0x10 [ 33.911432][ T580] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 33.911633][ T580] ___sys_sendmsg+0xee/0x170 [ 33.911790][ T580] ? __pfx____sys_sendmsg+0x10/0x10 [ 33.911973][ T580] ? kasan_save_stack+0x34/0x50 [ 33.912133][ T580] ? kasan_save_stack+0x24/0x50 [ 33.912291][ T580] ? __kasan_record_aux_stack+0x8e/0xa0 [ 33.912448][ T580] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 33.912645][ T580] ? __x64_sys_close+0x7c/0xd0 [ 33.912804][ T580] ? do_syscall_64+0xc1/0x1d0 [ 33.912963][ T580] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 33.913157][ T580] ? __lock_acquire+0xb9a/0x1680 [ 33.913318][ T580] ? find_held_lock+0x2c/0x110 [ 33.913476][ T580] ? __lock_release+0x103/0x460 [ 33.913639][ T580] ? __virt_addr_valid+0x22b/0x430 [ 33.913799][ T580] ? __pfx___lock_release+0x10/0x10 [ 33.913956][ T580] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 33.914117][ T580] __sys_sendmsg+0x109/0x1a0 [ 33.914273][ T580] ? __pfx___sys_sendmsg+0x10/0x10 [ 33.914434][ T580] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 33.914634][ T580] do_syscall_64+0xc1/0x1d0 [ 33.914793][ T580] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 33.914986][ T580] RIP: 0033:0x7ff8e5b9a9a7 [ 33.915148][ T580] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 33.915701][ T580] RSP: 002b:00007ffc9913fb18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 33.915941][ T580] RAX: ffffffffffffffda RBX: 00007ffc99140250 RCX: 00007ff8e5b9a9a7 [ 33.916178][ T580] RDX: 0000000000000000 RSI: 00007ffc9913fb80 RDI: 0000000000000005 [ 33.916412][ T580] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 33.916652][ T580] R10: 00007ff8e5a584a8 R11: 0000000000000246 R12: 0000000000000002 [ 33.916886][ T580] R13: 0000000067796287 R14: 0000000000498600 R15: 0000000000000000 [ 33.917127][ T580] [ 51.150463][ T871] IPv6: Can't replace route, no match found [ 53.304014][ T941] IPv6: Can't replace route, no match found [ 94.693409][ T1856] Mirror/redirect action on [ 181.071304][ T2484] veth2: entered promiscuous mode [ 181.093278][ T2484] veth2: left promiscuous mode