[ 11.388615][ T278] ip (278) used greatest stack depth: 23424 bytes left [ 11.545244][ T280] eth0: renamed from tmp [ 12.888915][ T298] Initializing XFRM netlink socket [ 17.974510][ T376] IPsec XFRM device driver [ 20.042416][ T403] [ 20.042592][ T403] ============================================ [ 20.042768][ T403] WARNING: possible recursive locking detected [ 20.042937][ T403] 6.13.0-rc5-virtme #1 Not tainted [ 20.043072][ T403] -------------------------------------------- [ 20.043239][ T403] ip/403 is trying to acquire lock: [ 20.043377][ T403] ffffffffa09f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 20.043662][ T403] [ 20.043662][ T403] but task is already holding lock: [ 20.043864][ T403] ffffffffa09f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 20.044145][ T403] [ 20.044145][ T403] other info that might help us debug this: [ 20.044351][ T403] Possible unsafe locking scenario: [ 20.044351][ T403] [ 20.044552][ T403] CPU0 [ 20.044655][ T403] ---- [ 20.044757][ T403] lock((netdev_chain).rwsem); [ 20.044892][ T403] lock((netdev_chain).rwsem); [ 20.045029][ T403] [ 20.045029][ T403] *** DEADLOCK *** [ 20.045029][ T403] [ 20.045227][ T403] May be due to missing lock nesting notation [ 20.045227][ T403] [ 20.045429][ T403] 2 locks held by ip/403: [ 20.045533][ T403] #0: ffffffffa0a07e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 20.045781][ T403] #1: ffffffffa09f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 20.046056][ T403] [ 20.046056][ T403] stack backtrace: [ 20.046222][ T403] CPU: 2 UID: 0 PID: 403 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 20.046430][ T403] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 20.046603][ T403] Call Trace: [ 20.046708][ T403] [ 20.046779][ T403] dump_stack_lvl+0x82/0xd0 [ 20.046922][ T403] print_deadlock_bug+0x40a/0x650 [ 20.047062][ T403] validate_chain+0x5bf/0xae0 [ 20.047202][ T403] ? __pfx_validate_chain+0x10/0x10 [ 20.047342][ T403] ? hlock_class+0x4e/0x130 [ 20.047506][ T403] ? mark_lock+0x38/0x3e0 [ 20.047615][ T403] __lock_acquire+0xb9a/0x1680 [ 20.047759][ T403] lock_acquire.part.0+0xeb/0x330 [ 20.047898][ T403] ? blocking_notifier_call_chain+0x50/0x90 [ 20.048075][ T403] ? __lock_acquire+0xb9a/0x1680 [ 20.048215][ T403] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 20.048357][ T403] ? trace_lock_acquire+0x14c/0x1f0 [ 20.048504][ T403] ? lock_acquire+0x32/0xc0 [ 20.048655][ T403] ? blocking_notifier_call_chain+0x50/0x90 [ 20.048827][ T403] down_read+0x9f/0x340 [ 20.048932][ T403] ? blocking_notifier_call_chain+0x50/0x90 [ 20.049101][ T403] ? __pfx_down_read+0x10/0x10 [ 20.049239][ T403] ? __lock_release+0x103/0x460 [ 20.049377][ T403] blocking_notifier_call_chain+0x50/0x90 [ 20.049517][ T403] __netdev_upper_dev_unlink+0xd9/0x220 [ 20.049654][ T403] ? mark_held_locks+0x9e/0xe0 [ 20.049791][ T403] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 20.049961][ T403] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 20.050132][ T403] ? __try_to_del_timer_sync+0xe7/0x140 [ 20.050270][ T403] ? __pfx___try_to_del_timer_sync+0x10/0x10 [ 20.050443][ T403] ? mark_held_locks+0x9e/0xe0 [ 20.050583][ T403] netdev_upper_dev_unlink+0x71/0xa0 [ 20.050720][ T403] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 20.050889][ T403] ? mutex_is_locked+0x1c/0x60 [ 20.051028][ T403] ? rtnl_is_locked+0x15/0x20 [ 20.051163][ T403] ? netdev_master_upper_dev_get+0x13/0x120 [ 20.051351][ T403] vrf_device_event+0x78/0xe0 [ 20.051504][ T403] notifier_call_chain+0xcd/0x150 [ 20.051644][ T403] blocking_notifier_call_chain+0x66/0x90 [ 20.051781][ T403] unregister_netdevice_many_notify+0xa83/0x1580 [ 20.051952][ T403] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 20.052122][ T403] ? rtnl_dellink+0x228/0xa40 [ 20.052259][ T403] ? sock_def_readable+0x11e/0x300 [ 20.052395][ T403] ? __pfx___mutex_lock+0x10/0x10 [ 20.052536][ T403] ? rtnl_is_locked+0x15/0x20 [ 20.052672][ T403] ? unregister_netdevice_queue+0x70/0x410 [ 20.052843][ T403] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 20.053011][ T403] ? __nla_validate_parse+0x48/0x3d0 [ 20.053150][ T403] rtnl_dellink+0x348/0xa40 [ 20.053288][ T403] ? __pfx_rtnl_dellink+0x10/0x10 [ 20.053440][ T403] ? find_held_lock+0x2c/0x110 [ 20.053575][ T403] ? __lock_release+0x103/0x460 [ 20.053713][ T403] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 20.053849][ T403] ? __pfx___lock_release+0x10/0x10 [ 20.053985][ T403] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 20.054123][ T403] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 20.054259][ T403] ? __pfx_rtnl_dellink+0x10/0x10 [ 20.054396][ T403] rtnetlink_rcv_msg+0x712/0xc10 [ 20.054532][ T403] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 20.054670][ T403] ? hlock_class+0x4e/0x130 [ 20.054805][ T403] ? mark_lock+0x38/0x3e0 [ 20.054911][ T403] ? __lock_acquire+0xb9a/0x1680 [ 20.055048][ T403] netlink_rcv_skb+0x130/0x360 [ 20.055184][ T403] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 20.055321][ T403] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 20.055461][ T403] ? netlink_deliver_tap+0x13e/0x340 [ 20.055601][ T403] ? netlink_deliver_tap+0xc3/0x340 [ 20.055737][ T403] netlink_unicast+0x44b/0x710 [ 20.055874][ T403] ? __pfx_netlink_unicast+0x10/0x10 [ 20.056011][ T403] ? find_held_lock+0x2c/0x110 [ 20.056149][ T403] netlink_sendmsg+0x723/0xbe0 [ 20.056286][ T403] ? __pfx_netlink_sendmsg+0x10/0x10 [ 20.056425][ T403] ____sys_sendmsg+0x7ac/0xa10 [ 20.056583][ T403] ? __pfx_____sys_sendmsg+0x10/0x10 [ 20.056722][ T403] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 20.056900][ T403] ___sys_sendmsg+0xee/0x170 [ 20.057041][ T403] ? __pfx____sys_sendmsg+0x10/0x10 [ 20.057183][ T403] ? kasan_save_stack+0x34/0x50 [ 20.057324][ T403] ? kasan_save_stack+0x24/0x50 [ 20.057469][ T403] ? __kasan_record_aux_stack+0x8e/0xa0 [ 20.057613][ T403] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 20.057789][ T403] ? __x64_sys_close+0x7c/0xd0 [ 20.057931][ T403] ? do_syscall_64+0xc1/0x1d0 [ 20.058070][ T403] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 20.058245][ T403] ? __lock_acquire+0xb9a/0x1680 [ 20.058388][ T403] ? find_held_lock+0x2c/0x110 [ 20.058526][ T403] ? __lock_release+0x103/0x460 [ 20.058674][ T403] ? __virt_addr_valid+0x22b/0x430 [ 20.058817][ T403] ? __pfx___lock_release+0x10/0x10 [ 20.058954][ T403] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 20.059092][ T403] __sys_sendmsg+0x109/0x1a0 [ 20.059227][ T403] ? __pfx___sys_sendmsg+0x10/0x10 [ 20.059364][ T403] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 20.059539][ T403] do_syscall_64+0xc1/0x1d0 [ 20.059677][ T403] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 20.059844][ T403] RIP: 0033:0x7f2b3554a9a7 [ 20.059987][ T403] 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 [ 20.060465][ T403] RSP: 002b:00007fff149382b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 20.060674][ T403] RAX: ffffffffffffffda RBX: 00007fff149389f0 RCX: 00007f2b3554a9a7 [ 20.060878][ T403] RDX: 0000000000000000 RSI: 00007fff14938320 RDI: 0000000000000005 [ 20.061085][ T403] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 20.061289][ T403] R10: 00007f2b354084a8 R11: 0000000000000246 R12: 0000000000000001 [ 20.061494][ T403] R13: 0000000067790bb1 R14: 0000000000498600 R15: 0000000000000000 [ 20.061702][ T403]