[ 9.653697][ T252] ip (252) used greatest stack depth: 23248 bytes left [ 10.967471][ T283] gre: GRE over IPv4 demultiplexor driver [ 10.982889][ T283] ip6_gre: GRE over IPv6 tunneling driver [ 11.108238][ T61] ip6_tunnel: er6 xmit: Local address not yet configured! [ 11.292221][ T61] ip6_tunnel: gt6 xmit: Local address not yet configured! [ 11.307093][ T61] ip6_tunnel: er6 xmit: Local address not yet configured! [ 11.458316][ T61] ip6_tunnel: gt6 xmit: Local address not yet configured! [ 11.658209][ T67] ip6_tunnel: er6 xmit: Local address not yet configured! [ 12.170250][ T67] ip6_tunnel: gt6 xmit: Local address not yet configured! [ 12.562548][ T293] Mirror/redirect action on [ 17.709213][ T304] [ 17.709394][ T304] ============================================ [ 17.709587][ T304] WARNING: possible recursive locking detected [ 17.709768][ T304] 6.13.0-rc5-virtme #1 Not tainted [ 17.709918][ T304] -------------------------------------------- [ 17.710096][ T304] ip/304 is trying to acquire lock: [ 17.710236][ T304] ffffffff9e9f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 17.710534][ T304] [ 17.710534][ T304] but task is already holding lock: [ 17.710750][ T304] ffffffff9e9f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 17.711037][ T304] [ 17.711037][ T304] other info that might help us debug this: [ 17.711246][ T304] Possible unsafe locking scenario: [ 17.711246][ T304] [ 17.711457][ T304] CPU0 [ 17.711563][ T304] ---- [ 17.711669][ T304] lock((netdev_chain).rwsem); [ 17.711815][ T304] lock((netdev_chain).rwsem); [ 17.711960][ T304] [ 17.711960][ T304] *** DEADLOCK *** [ 17.711960][ T304] [ 17.712168][ T304] May be due to missing lock nesting notation [ 17.712168][ T304] [ 17.712378][ T304] 2 locks held by ip/304: [ 17.712486][ T304] #0: ffffffff9ea07e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 17.712749][ T304] #1: ffffffff9e9f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 17.713042][ T304] [ 17.713042][ T304] stack backtrace: [ 17.713218][ T304] CPU: 0 UID: 0 PID: 304 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 17.713432][ T304] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 17.713617][ T304] Call Trace: [ 17.713726][ T304] [ 17.713801][ T304] dump_stack_lvl+0x82/0xd0 [ 17.713949][ T304] print_deadlock_bug+0x40a/0x650 [ 17.714097][ T304] validate_chain+0x5bf/0xae0 [ 17.714243][ T304] ? __pfx_validate_chain+0x10/0x10 [ 17.714388][ T304] ? hlock_class+0x4e/0x130 [ 17.714532][ T304] ? mark_lock+0x38/0x3e0 [ 17.714645][ T304] __lock_acquire+0xb9a/0x1680 [ 17.714796][ T304] lock_acquire.part.0+0xeb/0x330 [ 17.714939][ T304] ? blocking_notifier_call_chain+0x50/0x90 [ 17.715119][ T304] ? __lock_acquire+0xb9a/0x1680 [ 17.715265][ T304] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 17.715410][ T304] ? trace_lock_acquire+0x14c/0x1f0 [ 17.715555][ T304] ? lock_acquire+0x32/0xc0 [ 17.715700][ T304] ? blocking_notifier_call_chain+0x50/0x90 [ 17.715880][ T304] down_read+0x9f/0x340 [ 17.715992][ T304] ? blocking_notifier_call_chain+0x50/0x90 [ 17.716179][ T304] ? __pfx_down_read+0x10/0x10 [ 17.716323][ T304] ? __lock_release+0x103/0x460 [ 17.716473][ T304] blocking_notifier_call_chain+0x50/0x90 [ 17.716623][ T304] __netdev_upper_dev_unlink+0xd9/0x220 [ 17.716773][ T304] ? mark_held_locks+0x9e/0xe0 [ 17.716916][ T304] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 17.717094][ T304] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 17.717271][ T304] ? __try_to_del_timer_sync+0xe7/0x140 [ 17.717415][ T304] ? __pfx___try_to_del_timer_sync+0x10/0x10 [ 17.717597][ T304] ? mark_held_locks+0x9e/0xe0 [ 17.717740][ T304] netdev_upper_dev_unlink+0x71/0xa0 [ 17.717884][ T304] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 17.718061][ T304] ? mutex_is_locked+0x1c/0x60 [ 17.718205][ T304] ? rtnl_is_locked+0x15/0x20 [ 17.718348][ T304] ? netdev_master_upper_dev_get+0x13/0x120 [ 17.718525][ T304] vrf_device_event+0x78/0xe0 [ 17.718670][ T304] notifier_call_chain+0xcd/0x150 [ 17.718820][ T304] blocking_notifier_call_chain+0x66/0x90 [ 17.718964][ T304] unregister_netdevice_many_notify+0xa83/0x1580 [ 17.719145][ T304] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 17.719325][ T304] ? rtnl_dellink+0x228/0xa40 [ 17.719465][ T304] ? sock_def_readable+0x11e/0x300 [ 17.719613][ T304] ? rtnl_is_locked+0x15/0x20 [ 17.719760][ T304] ? unregister_netdevice_queue+0x70/0x410 [ 17.719937][ T304] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 17.720115][ T304] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 17.720293][ T304] rtnl_dellink+0x348/0xa40 [ 17.720437][ T304] ? __pfx_rtnl_dellink+0x10/0x10 [ 17.720593][ T304] ? find_held_lock+0x2c/0x110 [ 17.720733][ T304] ? __lock_release+0x103/0x460 [ 17.720881][ T304] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 17.721027][ T304] ? __pfx___lock_release+0x10/0x10 [ 17.721169][ T304] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 17.721312][ T304] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 17.721454][ T304] ? __pfx_rtnl_dellink+0x10/0x10 [ 17.721597][ T304] rtnetlink_rcv_msg+0x712/0xc10 [ 17.721739][ T304] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 17.721885][ T304] ? hlock_class+0x4e/0x130 [ 17.722025][ T304] ? mark_lock+0x38/0x3e0 [ 17.722136][ T304] ? __lock_acquire+0xb9a/0x1680 [ 17.722279][ T304] netlink_rcv_skb+0x130/0x360 [ 17.722422][ T304] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 17.722564][ T304] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 17.722711][ T304] ? netlink_deliver_tap+0x13e/0x340 [ 17.722853][ T304] ? netlink_deliver_tap+0xc3/0x340 [ 17.722998][ T304] netlink_unicast+0x44b/0x710 [ 17.723140][ T304] ? __pfx_netlink_unicast+0x10/0x10 [ 17.723284][ T304] ? find_held_lock+0x2c/0x110 [ 17.723428][ T304] netlink_sendmsg+0x723/0xbe0 [ 17.723571][ T304] ? __pfx_netlink_sendmsg+0x10/0x10 [ 17.723716][ T304] ____sys_sendmsg+0x7ac/0xa10 [ 17.723859][ T304] ? __pfx_____sys_sendmsg+0x10/0x10 [ 17.724005][ T304] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 17.724185][ T304] ___sys_sendmsg+0xee/0x170 [ 17.724326][ T304] ? __pfx____sys_sendmsg+0x10/0x10 [ 17.724470][ T304] ? kasan_save_stack+0x34/0x50 [ 17.724613][ T304] ? kasan_save_stack+0x24/0x50 [ 17.724755][ T304] ? __kasan_record_aux_stack+0x8e/0xa0 [ 17.724897][ T304] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 17.725080][ T304] ? __x64_sys_close+0x7c/0xd0 [ 17.725226][ T304] ? do_syscall_64+0xc1/0x1d0 [ 17.725370][ T304] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 17.725547][ T304] ? __lock_acquire+0xb9a/0x1680 [ 17.725693][ T304] ? find_held_lock+0x2c/0x110 [ 17.725835][ T304] ? __lock_release+0x103/0x460 [ 17.725976][ T304] ? __virt_addr_valid+0x22b/0x430 [ 17.726123][ T304] ? __pfx___lock_release+0x10/0x10 [ 17.726267][ T304] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 17.726412][ T304] __sys_sendmsg+0x109/0x1a0 [ 17.726556][ T304] ? __pfx___sys_sendmsg+0x10/0x10 [ 17.726698][ T304] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 17.726882][ T304] do_syscall_64+0xc1/0x1d0 [ 17.727024][ T304] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 17.727204][ T304] RIP: 0033:0x7f5c4dab99a7 [ 17.727353][ T304] 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 [ 17.727852][ T304] RSP: 002b:00007ffe90358d68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 17.728069][ T304] RAX: ffffffffffffffda RBX: 00007ffe90359490 RCX: 00007f5c4dab99a7 [ 17.728286][ T304] RDX: 0000000000000000 RSI: 00007ffe90358dd0 RDI: 0000000000000005 [ 17.728499][ T304] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 17.728711][ T304] R10: 00007f5c4d977ef8 R11: 0000000000000246 R12: 0000000000000002 [ 17.728923][ T304] R13: 0000000067791341 R14: 0000000000498600 R15: 0000000000000000 [ 17.729143][ T304]