[ 14.047379][ T314] ip (314) used greatest stack depth: 23904 bytes left [ 32.621469][ T579] [ 32.621580][ T579] ============================================ [ 32.621774][ T579] WARNING: possible recursive locking detected [ 32.621944][ T579] 6.13.0-rc5-virtme #1 Not tainted [ 32.622081][ T579] -------------------------------------------- [ 32.622255][ T579] ip/579 is trying to acquire lock: [ 32.622392][ T579] ffffffffb6ff6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 32.622673][ T579] [ 32.622673][ T579] but task is already holding lock: [ 32.622878][ T579] ffffffffb6ff6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 32.623152][ T579] [ 32.623152][ T579] other info that might help us debug this: [ 32.623361][ T579] Possible unsafe locking scenario: [ 32.623361][ T579] [ 32.623561][ T579] CPU0 [ 32.623663][ T579] ---- [ 32.623766][ T579] lock((netdev_chain).rwsem); [ 32.623906][ T579] lock((netdev_chain).rwsem); [ 32.624045][ T579] [ 32.624045][ T579] *** DEADLOCK *** [ 32.624045][ T579] [ 32.624248][ T579] May be due to missing lock nesting notation [ 32.624248][ T579] [ 32.624450][ T579] 2 locks held by ip/579: [ 32.624556][ T579] #0: ffffffffb7007e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 32.624805][ T579] #1: ffffffffb6ff6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 32.625083][ T579] [ 32.625083][ T579] stack backtrace: [ 32.625256][ T579] CPU: 0 UID: 0 PID: 579 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 32.625486][ T579] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 32.625664][ T579] Call Trace: [ 32.625784][ T579] [ 32.625856][ T579] dump_stack_lvl+0x82/0xd0 [ 32.625999][ T579] print_deadlock_bug+0x40a/0x650 [ 32.626142][ T579] validate_chain+0x5bf/0xae0 [ 32.626300][ T579] ? __pfx_validate_chain+0x10/0x10 [ 32.626447][ T579] ? hlock_class+0x4e/0x130 [ 32.626589][ T579] ? mark_lock+0x38/0x3e0 [ 32.626709][ T579] __lock_acquire+0xb9a/0x1680 [ 32.626849][ T579] ? execlists_create_virtual+0x1327/0x1640 [ 32.627024][ T579] lock_acquire.part.0+0xeb/0x330 [ 32.627163][ T579] ? blocking_notifier_call_chain+0x50/0x90 [ 32.627359][ T579] ? __lock_acquire+0xb9a/0x1680 [ 32.627502][ T579] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 32.627649][ T579] ? trace_lock_acquire+0x14c/0x1f0 [ 32.627792][ T579] ? lock_acquire+0x32/0xc0 [ 32.627935][ T579] ? blocking_notifier_call_chain+0x50/0x90 [ 32.628114][ T579] down_read+0x9f/0x340 [ 32.628223][ T579] ? blocking_notifier_call_chain+0x50/0x90 [ 32.628399][ T579] ? __pfx_down_read+0x10/0x10 [ 32.628582][ T579] ? __lock_release+0x103/0x460 [ 32.628724][ T579] blocking_notifier_call_chain+0x50/0x90 [ 32.628867][ T579] __netdev_upper_dev_unlink+0xd9/0x220 [ 32.629011][ T579] ? mark_held_locks+0x9e/0xe0 [ 32.629152][ T579] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 32.629355][ T579] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 32.629535][ T579] ? __try_to_del_timer_sync+0xe7/0x140 [ 32.629680][ T579] ? __pfx___try_to_del_timer_sync+0x10/0x10 [ 32.629856][ T579] ? mark_held_locks+0x9e/0xe0 [ 32.629998][ T579] netdev_upper_dev_unlink+0x71/0xa0 [ 32.630139][ T579] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 32.630314][ T579] ? mutex_is_locked+0x1c/0x60 [ 32.630455][ T579] ? rtnl_is_locked+0x15/0x20 [ 32.630601][ T579] ? netdev_master_upper_dev_get+0x13/0x120 [ 32.630777][ T579] vrf_device_event+0x78/0xe0 [ 32.630920][ T579] notifier_call_chain+0xcd/0x150 [ 32.631062][ T579] blocking_notifier_call_chain+0x66/0x90 [ 32.631214][ T579] unregister_netdevice_many_notify+0xa83/0x1580 [ 32.631387][ T579] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 32.631557][ T579] ? rtnl_dellink+0x228/0xa40 [ 32.631696][ T579] ? sock_def_readable+0x11e/0x300 [ 32.631836][ T579] ? __pfx___mutex_lock+0x10/0x10 [ 32.631976][ T579] ? rtnl_is_locked+0x15/0x20 [ 32.632112][ T579] ? unregister_netdevice_queue+0x70/0x410 [ 32.632282][ T579] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 32.632453][ T579] ? __nla_validate_parse+0x48/0x3d0 [ 32.632593][ T579] rtnl_dellink+0x348/0xa40 [ 32.632734][ T579] ? __pfx_rtnl_dellink+0x10/0x10 [ 32.632885][ T579] ? find_held_lock+0x2c/0x110 [ 32.633025][ T579] ? __lock_release+0x103/0x460 [ 32.633162][ T579] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 32.633298][ T579] ? __pfx___lock_release+0x10/0x10 [ 32.633436][ T579] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 32.633578][ T579] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 32.633719][ T579] ? __pfx_rtnl_dellink+0x10/0x10 [ 32.633857][ T579] rtnetlink_rcv_msg+0x712/0xc10 [ 32.633995][ T579] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 32.634133][ T579] ? hlock_class+0x4e/0x130 [ 32.634270][ T579] ? mark_lock+0x38/0x3e0 [ 32.634376][ T579] ? __lock_acquire+0xb9a/0x1680 [ 32.634514][ T579] netlink_rcv_skb+0x130/0x360 [ 32.634655][ T579] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 32.634797][ T579] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 32.634938][ T579] ? netlink_deliver_tap+0x13e/0x340 [ 32.635075][ T579] ? netlink_deliver_tap+0xc3/0x340 [ 32.635216][ T579] netlink_unicast+0x44b/0x710 [ 32.635356][ T579] ? __pfx_netlink_unicast+0x10/0x10 [ 32.635493][ T579] ? find_held_lock+0x2c/0x110 [ 32.635634][ T579] netlink_sendmsg+0x723/0xbe0 [ 32.635774][ T579] ? __pfx_netlink_sendmsg+0x10/0x10 [ 32.635915][ T579] ____sys_sendmsg+0x7ac/0xa10 [ 32.636053][ T579] ? __pfx_____sys_sendmsg+0x10/0x10 [ 32.636189][ T579] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 32.636365][ T579] ___sys_sendmsg+0xee/0x170 [ 32.636504][ T579] ? __pfx____sys_sendmsg+0x10/0x10 [ 32.636646][ T579] ? kasan_save_stack+0x34/0x50 [ 32.636785][ T579] ? kasan_save_stack+0x24/0x50 [ 32.636925][ T579] ? __kasan_record_aux_stack+0x8e/0xa0 [ 32.637063][ T579] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 32.637236][ T579] ? __x64_sys_close+0x7c/0xd0 [ 32.637376][ T579] ? do_syscall_64+0xc1/0x1d0 [ 32.637516][ T579] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 32.637689][ T579] ? __lock_acquire+0xb9a/0x1680 [ 32.637832][ T579] ? find_held_lock+0x2c/0x110 [ 32.637971][ T579] ? __lock_release+0x103/0x460 [ 32.638108][ T579] ? __virt_addr_valid+0x22b/0x430 [ 32.638249][ T579] ? __pfx___lock_release+0x10/0x10 [ 32.638388][ T579] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 32.638554][ T579] __sys_sendmsg+0x109/0x1a0 [ 32.638713][ T579] ? __pfx___sys_sendmsg+0x10/0x10 [ 32.638858][ T579] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 32.639042][ T579] do_syscall_64+0xc1/0x1d0 [ 32.639186][ T579] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 32.639361][ T579] RIP: 0033:0x7f206826c9a7 [ 32.639509][ T579] 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 [ 32.640015][ T579] RSP: 002b:00007ffe3b7828f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 32.640225][ T579] RAX: ffffffffffffffda RBX: 00007ffe3b783030 RCX: 00007f206826c9a7 [ 32.640450][ T579] RDX: 0000000000000000 RSI: 00007ffe3b782960 RDI: 0000000000000005 [ 32.640661][ T579] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 32.640877][ T579] R10: 00007f206812a4a8 R11: 0000000000000246 R12: 0000000000000002 [ 32.641088][ T579] R13: 0000000067790eaa R14: 0000000000498600 R15: 0000000000000000 [ 32.641302][ T579] [ 32.659535][ T579] ip (579) used greatest stack depth: 23888 bytes left [ 48.931801][ T871] IPv6: Can't replace route, no match found [ 50.911754][ T941] IPv6: Can't replace route, no match found [ 89.844032][ T1855] Mirror/redirect action on [ 174.238405][ T2483] veth2: entered promiscuous mode [ 174.258678][ T2483] veth2: left promiscuous mode