[ 11.027780][ T249] ip (249) used greatest stack depth: 24208 bytes left [ 18.295587][ T354] 8021q: 802.1Q VLAN Support v1.8 [ 18.759386][ T360] gre: GRE over IPv4 demultiplexor driver [ 18.804403][ T360] ip6_gre: GRE over IPv6 tunneling driver [ 19.097257][ T365] ip (365) used greatest stack depth: 23520 bytes left [ 28.979471][ T443] GACT probability NOT on [ 46.180125][ T656] [ 46.180301][ T656] ============================================ [ 46.180498][ T656] WARNING: possible recursive locking detected [ 46.180683][ T656] 6.13.0-rc5-virtme #1 Not tainted [ 46.180840][ T656] -------------------------------------------- [ 46.181034][ T656] ip/656 is trying to acquire lock: [ 46.181183][ T656] ffffffff88fd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 46.181499][ T656] [ 46.181499][ T656] but task is already holding lock: [ 46.181718][ T656] ffffffff88fd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 46.182039][ T656] [ 46.182039][ T656] other info that might help us debug this: [ 46.182259][ T656] Possible unsafe locking scenario: [ 46.182259][ T656] [ 46.182473][ T656] CPU0 [ 46.182588][ T656] ---- [ 46.182698][ T656] lock((netdev_chain).rwsem); [ 46.182848][ T656] lock((netdev_chain).rwsem); [ 46.182998][ T656] [ 46.182998][ T656] *** DEADLOCK *** [ 46.182998][ T656] [ 46.183219][ T656] May be due to missing lock nesting notation [ 46.183219][ T656] [ 46.183437][ T656] 2 locks held by ip/656: [ 46.183551][ T656] #0: ffffffff88fe7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 46.183851][ T656] #1: ffffffff88fd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 46.184151][ T656] [ 46.184151][ T656] stack backtrace: [ 46.184336][ T656] CPU: 3 UID: 0 PID: 656 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 46.184558][ T656] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 46.184740][ T656] Call Trace: [ 46.184853][ T656] [ 46.184928][ T656] dump_stack_lvl+0x82/0xd0 [ 46.185084][ T656] print_deadlock_bug+0x40a/0x650 [ 46.185244][ T656] validate_chain+0x5bf/0xae0 [ 46.185396][ T656] ? __pfx_validate_chain+0x10/0x10 [ 46.185543][ T656] ? hlock_class+0x4e/0x130 [ 46.185690][ T656] ? mark_lock+0x38/0x3e0 [ 46.185803][ T656] __lock_acquire+0xb9a/0x1680 [ 46.185955][ T656] lock_acquire.part.0+0xeb/0x330 [ 46.186105][ T656] ? blocking_notifier_call_chain+0x50/0x90 [ 46.186301][ T656] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 46.186512][ T656] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.186672][ T656] ? trace_lock_acquire+0x14c/0x1f0 [ 46.186820][ T656] ? lock_acquire+0x32/0xc0 [ 46.186967][ T656] ? blocking_notifier_call_chain+0x50/0x90 [ 46.187148][ T656] down_read+0x9f/0x340 [ 46.187267][ T656] ? blocking_notifier_call_chain+0x50/0x90 [ 46.187453][ T656] ? __pfx_down_read+0x10/0x10 [ 46.187605][ T656] ? __lock_release+0x103/0x460 [ 46.187753][ T656] ? netconsole_netdev_event+0x2c1/0x620 [ 46.187900][ T656] ? __pfx___lock_release+0x10/0x10 [ 46.188047][ T656] blocking_notifier_call_chain+0x50/0x90 [ 46.188196][ T656] __netdev_upper_dev_unlink+0xd9/0x220 [ 46.188342][ T656] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 46.188545][ T656] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 46.188695][ T656] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 46.188879][ T656] ? rtnl_is_locked+0x15/0x20 [ 46.189036][ T656] netdev_upper_dev_unlink+0x71/0xa0 [ 46.189184][ T656] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 46.189392][ T656] ? netconsole_netdev_event+0x2c1/0x620 [ 46.189540][ T656] ? mutex_is_locked+0x1c/0x60 [ 46.189696][ T656] ? rtnl_is_locked+0x15/0x20 [ 46.189841][ T656] ? netdev_master_upper_dev_get+0x13/0x120 [ 46.190034][ T656] vrf_device_event+0x78/0xe0 [vrf] [ 46.190198][ T656] notifier_call_chain+0xcd/0x150 [ 46.190362][ T656] blocking_notifier_call_chain+0x66/0x90 [ 46.190530][ T656] unregister_netdevice_many_notify+0xa7b/0x1580 [ 46.190737][ T656] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 46.190946][ T656] ? net_generic+0xb1/0x1f0 [ip6_gre] [ 46.191116][ T656] ? __pfx___lock_release+0x10/0x10 [ 46.191286][ T656] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.191450][ T656] ? rtnl_is_locked+0x15/0x20 [ 46.191612][ T656] ? unregister_netdevice_queue+0x70/0x410 [ 46.191810][ T656] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 46.192019][ T656] ? net_generic+0xbb/0x1f0 [ip6_gre] [ 46.192189][ T656] rtnl_dellink+0x348/0xa40 [ 46.192353][ T656] ? __pfx_rtnl_dellink+0x10/0x10 [ 46.192531][ T656] ? find_held_lock+0x2c/0x110 [ 46.192696][ T656] ? __lock_release+0x103/0x460 [ 46.192860][ T656] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 46.193022][ T656] ? __pfx___lock_release+0x10/0x10 [ 46.193192][ T656] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.193355][ T656] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 46.193518][ T656] ? __pfx_rtnl_dellink+0x10/0x10 [ 46.193679][ T656] rtnetlink_rcv_msg+0x712/0xc10 [ 46.193845][ T656] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 46.194007][ T656] ? hlock_class+0x4e/0x130 [ 46.194164][ T656] ? mark_lock+0x38/0x3e0 [ 46.194288][ T656] ? __lock_acquire+0xb9a/0x1680 [ 46.194457][ T656] netlink_rcv_skb+0x130/0x360 [ 46.194620][ T656] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 46.194802][ T656] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 46.194971][ T656] ? netlink_deliver_tap+0x13e/0x340 [ 46.195136][ T656] ? netlink_deliver_tap+0xc3/0x340 [ 46.195299][ T656] netlink_unicast+0x44b/0x710 [ 46.195464][ T656] ? __pfx_netlink_unicast+0x10/0x10 [ 46.195630][ T656] ? find_held_lock+0x2c/0x110 [ 46.195799][ T656] netlink_sendmsg+0x723/0xbe0 [ 46.195965][ T656] ? __pfx_netlink_sendmsg+0x10/0x10 [ 46.196129][ T656] ____sys_sendmsg+0x7ac/0xa10 [ 46.196297][ T656] ? __pfx_____sys_sendmsg+0x10/0x10 [ 46.196459][ T656] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 46.196667][ T656] ___sys_sendmsg+0xee/0x170 [ 46.196832][ T656] ? __pfx____sys_sendmsg+0x10/0x10 [ 46.196994][ T656] ? kasan_save_stack+0x34/0x50 [ 46.197160][ T656] ? kasan_save_stack+0x24/0x50 [ 46.197327][ T656] ? __kasan_record_aux_stack+0x8e/0xa0 [ 46.197492][ T656] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 46.197694][ T656] ? __x64_sys_close+0x7c/0xd0 [ 46.197857][ T656] ? do_syscall_64+0xc1/0x1d0 [ 46.198025][ T656] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 46.198233][ T656] ? __lock_acquire+0xb9a/0x1680 [ 46.198399][ T656] ? find_held_lock+0x2c/0x110 [ 46.198563][ T656] ? __lock_release+0x103/0x460 [ 46.198723][ T656] ? __virt_addr_valid+0x22b/0x430 [ 46.198887][ T656] ? __pfx___lock_release+0x10/0x10 [ 46.199052][ T656] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.199225][ T656] __sys_sendmsg+0x109/0x1a0 [ 46.199398][ T656] ? __pfx___sys_sendmsg+0x10/0x10 [ 46.199559][ T656] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 46.199765][ T656] do_syscall_64+0xc1/0x1d0 [ 46.199929][ T656] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 46.200132][ T656] RIP: 0033:0x7f751d8d49a7 [ 46.200307][ T656] 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 [ 46.200881][ T656] RSP: 002b:00007ffd11012478 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 46.201126][ T656] RAX: ffffffffffffffda RBX: 00007ffd11012ba0 RCX: 00007f751d8d49a7 [ 46.201371][ T656] RDX: 0000000000000000 RSI: 00007ffd110124e0 RDI: 0000000000000005 [ 46.201620][ T656] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 46.201863][ T656] R10: 00007f751d792ef8 R11: 0000000000000246 R12: 0000000000000002 [ 46.202105][ T656] R13: 00000000677900b8 R14: 0000000000498600 R15: 0000000000000000 [ 46.202349][ T656]