[ 12.340118][ T278] ip (278) used greatest stack depth: 24432 bytes left [ 12.525188][ T282] eth0: renamed from tmp [ 13.826827][ T298] ip (298) used greatest stack depth: 23856 bytes left [ 13.973391][ T300] Initializing XFRM netlink socket [ 19.345583][ T377] IPsec XFRM device driver [ 21.565309][ T404] [ 21.565433][ T404] ============================================ [ 21.565621][ T404] WARNING: possible recursive locking detected [ 21.565803][ T404] 6.13.0-rc5-virtme #1 Not tainted [ 21.565948][ T404] -------------------------------------------- [ 21.566127][ T404] ip/404 is trying to acquire lock: [ 21.566275][ T404] ffffffffbcff6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 21.566583][ T404] [ 21.566583][ T404] but task is already holding lock: [ 21.566800][ T404] ffffffffbcff6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 21.567094][ T404] [ 21.567094][ T404] other info that might help us debug this: [ 21.567312][ T404] Possible unsafe locking scenario: [ 21.567312][ T404] [ 21.567531][ T404] CPU0 [ 21.567643][ T404] ---- [ 21.567757][ T404] lock((netdev_chain).rwsem); [ 21.567903][ T404] lock((netdev_chain).rwsem); [ 21.568056][ T404] [ 21.568056][ T404] *** DEADLOCK *** [ 21.568056][ T404] [ 21.568271][ T404] May be due to missing lock nesting notation [ 21.568271][ T404] [ 21.568483][ T404] 2 locks held by ip/404: [ 21.568595][ T404] #0: ffffffffbd007e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 21.568863][ T404] #1: ffffffffbcff6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 21.569161][ T404] [ 21.569161][ T404] stack backtrace: [ 21.569347][ T404] CPU: 2 UID: 0 PID: 404 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 21.569567][ T404] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 21.569751][ T404] Call Trace: [ 21.569866][ T404] [ 21.569943][ T404] dump_stack_lvl+0x82/0xd0 [ 21.570101][ T404] print_deadlock_bug+0x40a/0x650 [ 21.570255][ T404] validate_chain+0x5bf/0xae0 [ 21.570403][ T404] ? __pfx_validate_chain+0x10/0x10 [ 21.570556][ T404] ? hlock_class+0x4e/0x130 [ 21.570704][ T404] ? mark_lock+0x38/0x3e0 [ 21.570816][ T404] __lock_acquire+0xb9a/0x1680 [ 21.570967][ T404] lock_acquire.part.0+0xeb/0x330 [ 21.571115][ T404] ? blocking_notifier_call_chain+0x50/0x90 [ 21.571302][ T404] ? __lock_acquire+0xb9a/0x1680 [ 21.571449][ T404] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 21.571596][ T404] ? trace_lock_acquire+0x14c/0x1f0 [ 21.571770][ T404] ? lock_acquire+0x32/0xc0 [ 21.571949][ T404] ? blocking_notifier_call_chain+0x50/0x90 [ 21.572142][ T404] down_read+0x9f/0x340 [ 21.572261][ T404] ? blocking_notifier_call_chain+0x50/0x90 [ 21.572462][ T404] ? __pfx_down_read+0x10/0x10 [ 21.572619][ T404] ? __lock_release+0x103/0x460 [ 21.572774][ T404] blocking_notifier_call_chain+0x50/0x90 [ 21.572930][ T404] __netdev_upper_dev_unlink+0xd9/0x220 [ 21.573107][ T404] ? mark_held_locks+0x9e/0xe0 [ 21.573253][ T404] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 21.573434][ T404] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 21.573621][ T404] ? __try_to_del_timer_sync+0xe7/0x140 [ 21.573787][ T404] ? __pfx___try_to_del_timer_sync+0x10/0x10 [ 21.573979][ T404] ? mark_held_locks+0x9e/0xe0 [ 21.574134][ T404] netdev_upper_dev_unlink+0x71/0xa0 [ 21.574287][ T404] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 21.574476][ T404] ? mutex_is_locked+0x1c/0x60 [ 21.574627][ T404] ? rtnl_is_locked+0x15/0x20 [ 21.574783][ T404] ? netdev_master_upper_dev_get+0x13/0x120 [ 21.574975][ T404] vrf_device_event+0x78/0xe0 [ 21.575140][ T404] notifier_call_chain+0xcd/0x150 [ 21.575288][ T404] blocking_notifier_call_chain+0x66/0x90 [ 21.575437][ T404] unregister_netdevice_many_notify+0xa83/0x1580 [ 21.575623][ T404] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 21.575806][ T404] ? rtnl_dellink+0x228/0xa40 [ 21.575956][ T404] ? sock_def_readable+0x11e/0x300 [ 21.576107][ T404] ? __pfx___mutex_lock+0x10/0x10 [ 21.576276][ T404] ? rtnl_is_locked+0x15/0x20 [ 21.576423][ T404] ? unregister_netdevice_queue+0x70/0x410 [ 21.576606][ T404] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 21.576793][ T404] ? __nla_validate_parse+0x48/0x3d0 [ 21.576950][ T404] rtnl_dellink+0x348/0xa40 [ 21.577099][ T404] ? __pfx_rtnl_dellink+0x10/0x10 [ 21.577262][ T404] ? find_held_lock+0x2c/0x110 [ 21.577410][ T404] ? __lock_release+0x103/0x460 [ 21.577559][ T404] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 21.577706][ T404] ? __pfx___lock_release+0x10/0x10 [ 21.577870][ T404] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 21.578020][ T404] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 21.578179][ T404] ? __pfx_rtnl_dellink+0x10/0x10 [ 21.578328][ T404] rtnetlink_rcv_msg+0x712/0xc10 [ 21.578481][ T404] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 21.578627][ T404] ? hlock_class+0x4e/0x130 [ 21.578774][ T404] ? mark_lock+0x38/0x3e0 [ 21.578887][ T404] ? __lock_acquire+0xb9a/0x1680 [ 21.579039][ T404] netlink_rcv_skb+0x130/0x360 [ 21.579196][ T404] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 21.579342][ T404] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 21.579494][ T404] ? netlink_deliver_tap+0x13e/0x340 [ 21.579643][ T404] ? netlink_deliver_tap+0xc3/0x340 [ 21.579791][ T404] netlink_unicast+0x44b/0x710 [ 21.579946][ T404] ? __pfx_netlink_unicast+0x10/0x10 [ 21.580110][ T404] ? find_held_lock+0x2c/0x110 [ 21.580266][ T404] netlink_sendmsg+0x723/0xbe0 [ 21.580417][ T404] ? __pfx_netlink_sendmsg+0x10/0x10 [ 21.580571][ T404] ____sys_sendmsg+0x7ac/0xa10 [ 21.580723][ T404] ? __pfx_____sys_sendmsg+0x10/0x10 [ 21.580873][ T404] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 21.581065][ T404] ___sys_sendmsg+0xee/0x170 [ 21.581214][ T404] ? __pfx____sys_sendmsg+0x10/0x10 [ 21.581368][ T404] ? kasan_save_stack+0x34/0x50 [ 21.581519][ T404] ? kasan_save_stack+0x24/0x50 [ 21.581669][ T404] ? __kasan_record_aux_stack+0x8e/0xa0 [ 21.581842][ T404] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 21.582044][ T404] ? __x64_sys_close+0x7c/0xd0 [ 21.582203][ T404] ? do_syscall_64+0xc1/0x1d0 [ 21.582360][ T404] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 21.582557][ T404] ? __lock_acquire+0xb9a/0x1680 [ 21.582717][ T404] ? find_held_lock+0x2c/0x110 [ 21.582873][ T404] ? __lock_release+0x103/0x460 [ 21.583040][ T404] ? __virt_addr_valid+0x22b/0x430 [ 21.583192][ T404] ? __pfx___lock_release+0x10/0x10 [ 21.583346][ T404] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 21.583508][ T404] __sys_sendmsg+0x109/0x1a0 [ 21.583655][ T404] ? __pfx___sys_sendmsg+0x10/0x10 [ 21.583810][ T404] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 21.583998][ T404] do_syscall_64+0xc1/0x1d0 [ 21.584149][ T404] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 21.584345][ T404] RIP: 0033:0x7f09aefff9a7 [ 21.584504][ T404] 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 [ 21.585024][ T404] RSP: 002b:00007ffc3600a098 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 21.585249][ T404] RAX: ffffffffffffffda RBX: 00007ffc3600a7d0 RCX: 00007f09aefff9a7 [ 21.585474][ T404] RDX: 0000000000000000 RSI: 00007ffc3600a100 RDI: 0000000000000005 [ 21.585692][ T404] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 21.585915][ T404] R10: 00007f09aeebd4a8 R11: 0000000000000246 R12: 0000000000000001 [ 21.586139][ T404] R13: 0000000067793d82 R14: 0000000000498600 R15: 0000000000000000 [ 21.586364][ T404]