[ 11.140895][ T248] ip (248) used greatest stack depth: 23952 bytes left [ 14.191381][ T299] 8021q: 802.1Q VLAN Support v1.8 [ 17.689327][ T346] br1: port 1(vx100) entered blocking state [ 17.689876][ T346] br1: port 1(vx100) entered disabled state [ 17.690619][ T346] vx100: entered allmulticast mode [ 17.693088][ T346] vx100: entered promiscuous mode [ 17.695321][ T346] br1: port 1(vx100) entered blocking state [ 17.695837][ T346] br1: port 1(vx100) entered forwarding state [ 17.861392][ T348] br1: port 2(veth1) entered blocking state [ 17.861744][ T348] br1: port 2(veth1) entered disabled state [ 17.862016][ T348] veth1: entered allmulticast mode [ 17.864652][ T348] veth1: entered promiscuous mode [ 17.940394][ T39] br1: port 2(veth1) entered blocking state [ 17.940792][ T39] br1: port 2(veth1) entered forwarding state [ 18.107935][ T351] br1: port 3(veth2) entered blocking state [ 18.108287][ T351] br1: port 3(veth2) entered disabled state [ 18.108627][ T351] veth2: entered allmulticast mode [ 18.110936][ T351] veth2: entered promiscuous mode [ 18.200175][ T68] br1: port 3(veth2) entered blocking state [ 18.200638][ T68] br1: port 3(veth2) entered forwarding state [ 21.544804][ T398] br2: port 1(w1) entered blocking state [ 21.545040][ T398] br2: port 1(w1) entered disabled state [ 21.545284][ T398] w1: entered allmulticast mode [ 21.547223][ T398] w1: entered promiscuous mode [ 22.147679][ T405] br2: port 2(vx100) entered blocking state [ 22.147960][ T405] br2: port 2(vx100) entered disabled state [ 22.148231][ T405] vx100: entered allmulticast mode [ 22.150395][ T405] vx100: entered promiscuous mode [ 22.150888][ T405] br2: port 2(vx100) entered blocking state [ 22.151168][ T405] br2: port 2(vx100) entered forwarding state [ 22.784058][ T68] br2: port 1(w1) entered blocking state [ 22.784419][ T68] br2: port 1(w1) entered forwarding state [ 24.992636][ T445] br2: port 1(w1) entered blocking state [ 24.992871][ T445] br2: port 1(w1) entered disabled state [ 24.993126][ T445] w1: entered allmulticast mode [ 24.995230][ T445] w1: entered promiscuous mode [ 25.544559][ T452] br2: port 2(vx100) entered blocking state [ 25.544864][ T452] br2: port 2(vx100) entered disabled state [ 25.545136][ T452] vx100: entered allmulticast mode [ 25.547048][ T452] vx100: entered promiscuous mode [ 25.554108][ T452] br2: port 2(vx100) entered blocking state [ 25.554422][ T452] br2: port 2(vx100) entered forwarding state [ 26.296905][ T68] br2: port 1(w1) entered blocking state [ 26.297143][ T68] br2: port 1(w1) entered forwarding state [ 38.199126][ T11] vx100: left allmulticast mode [ 38.199551][ T11] vx100: left promiscuous mode [ 38.200014][ T11] br2: port 2(vx100) entered disabled state [ 38.203233][ T11] w1: left allmulticast mode [ 38.203539][ T11] w1: left promiscuous mode [ 38.203996][ T11] br2: port 1(w1) entered disabled state [ 38.729016][ T11] vx100: left allmulticast mode [ 38.729298][ T11] vx100: left promiscuous mode [ 38.729636][ T11] br2: port 2(vx100) entered disabled state [ 38.732019][ T11] w1: left allmulticast mode [ 38.732284][ T11] w1: left promiscuous mode [ 38.732614][ T11] br2: port 1(w1) entered disabled state [ 40.751162][ T575] br1: port 3(veth2) entered disabled state [ 40.857816][ T576] veth2: left allmulticast mode [ 40.859146][ T576] veth2: left promiscuous mode [ 40.859717][ T576] br1: port 3(veth2) entered disabled state [ 41.024107][ T578] br1: port 2(veth1) entered disabled state [ 41.115429][ T579] veth1: left allmulticast mode [ 41.115674][ T579] veth1: left promiscuous mode [ 41.116048][ T579] br1: port 2(veth1) entered disabled state [ 41.195630][ T580] vx100: left allmulticast mode [ 41.195894][ T580] vx100: left promiscuous mode [ 41.196229][ T580] br1: port 1(vx100) entered disabled state [ 42.031917][ T589] [ 42.032090][ T589] ============================================ [ 42.032280][ T589] WARNING: possible recursive locking detected [ 42.032459][ T589] 6.13.0-rc5-virtme #1 Not tainted [ 42.032602][ T589] -------------------------------------------- [ 42.032778][ T589] ip/589 is trying to acquire lock: [ 42.032923][ T589] ffffffff9dbd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 42.033234][ T589] [ 42.033234][ T589] but task is already holding lock: [ 42.033456][ T589] ffffffff9dbd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 42.033747][ T589] [ 42.033747][ T589] other info that might help us debug this: [ 42.033960][ T589] Possible unsafe locking scenario: [ 42.033960][ T589] [ 42.034171][ T589] CPU0 [ 42.034280][ T589] ---- [ 42.034388][ T589] lock((netdev_chain).rwsem); [ 42.034535][ T589] lock((netdev_chain).rwsem); [ 42.034683][ T589] [ 42.034683][ T589] *** DEADLOCK *** [ 42.034683][ T589] [ 42.034896][ T589] May be due to missing lock nesting notation [ 42.034896][ T589] [ 42.035109][ T589] 2 locks held by ip/589: [ 42.035219][ T589] #0: ffffffff9dbe7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 42.035495][ T589] #1: ffffffff9dbd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 42.035792][ T589] [ 42.035792][ T589] stack backtrace: [ 42.035992][ T589] CPU: 2 UID: 0 PID: 589 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 42.036264][ T589] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 42.036546][ T589] Call Trace: [ 42.036715][ T589] [ 42.036812][ T589] dump_stack_lvl+0x82/0xd0 [ 42.037005][ T589] print_deadlock_bug+0x40a/0x650 [ 42.037240][ T589] validate_chain+0x5bf/0xae0 [ 42.037468][ T589] ? __pfx_validate_chain+0x10/0x10 [ 42.037708][ T589] ? hlock_class+0x4e/0x130 [ 42.037924][ T589] ? mark_lock+0x38/0x3e0 [ 42.038101][ T589] __lock_acquire+0xb9a/0x1680 [ 42.038325][ T589] lock_acquire.part.0+0xeb/0x330 [ 42.038549][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 42.038827][ T589] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 42.039109][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 42.039329][ T589] ? trace_lock_acquire+0x14c/0x1f0 [ 42.039566][ T589] ? lock_acquire+0x32/0xc0 [ 42.039793][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 42.040118][ T589] down_read+0x9f/0x340 [ 42.040294][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 42.040577][ T589] ? __pfx_down_read+0x10/0x10 [ 42.040807][ T589] ? __lock_release+0x103/0x460 [ 42.041035][ T589] ? netconsole_netdev_event+0x2c1/0x620 [ 42.041257][ T589] ? __pfx___lock_release+0x10/0x10 [ 42.041483][ T589] blocking_notifier_call_chain+0x50/0x90 [ 42.041714][ T589] __netdev_upper_dev_unlink+0xd9/0x220 [ 42.041944][ T589] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 42.042231][ T589] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 42.042466][ T589] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 42.042764][ T589] ? rtnl_is_locked+0x15/0x20 [ 42.043002][ T589] netdev_upper_dev_unlink+0x71/0xa0 [ 42.043236][ T589] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 42.043509][ T589] ? netconsole_netdev_event+0x2c1/0x620 [ 42.043730][ T589] ? mutex_is_locked+0x1c/0x60 [ 42.043962][ T589] ? rtnl_is_locked+0x15/0x20 [ 42.044195][ T589] ? netdev_master_upper_dev_get+0x13/0x120 [ 42.044493][ T589] vrf_device_event+0x78/0xe0 [vrf] [ 42.044739][ T589] notifier_call_chain+0xcd/0x150 [ 42.044986][ T589] blocking_notifier_call_chain+0x66/0x90 [ 42.045243][ T589] unregister_netdevice_many_notify+0xa7b/0x1580 [ 42.045545][ T589] ? hlock_class+0x4e/0x130 [ 42.045777][ T589] ? mark_lock+0x38/0x3e0 [ 42.045961][ T589] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 42.046272][ T589] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 42.046585][ T589] ? kfree+0xf3/0x330 [ 42.046760][ T589] ? vlan_vid_del+0x310/0x5e0 [ 42.046996][ T589] ? vlan_vid_del+0x310/0x5e0 [ 42.047188][ T589] rtnl_dellink+0x348/0xa40 [ 42.047425][ T589] ? __pfx_rtnl_dellink+0x10/0x10 [ 42.047685][ T589] ? find_held_lock+0x2c/0x110 [ 42.047929][ T589] ? __lock_release+0x103/0x460 [ 42.048172][ T589] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 42.048405][ T589] ? __pfx___lock_release+0x10/0x10 [ 42.048631][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 42.048865][ T589] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 42.049081][ T589] ? __pfx_rtnl_dellink+0x10/0x10 [ 42.049313][ T589] rtnetlink_rcv_msg+0x712/0xc10 [ 42.049535][ T589] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 42.049773][ T589] ? hlock_class+0x4e/0x130 [ 42.050009][ T589] ? mark_lock+0x38/0x3e0 [ 42.050196][ T589] ? __lock_acquire+0xb9a/0x1680 [ 42.050432][ T589] netlink_rcv_skb+0x130/0x360 [ 42.050667][ T589] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 42.050900][ T589] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 42.051146][ T589] ? netlink_deliver_tap+0x13e/0x340 [ 42.051391][ T589] ? netlink_deliver_tap+0xc3/0x340 [ 42.051624][ T589] netlink_unicast+0x44b/0x710 [ 42.051851][ T589] ? __pfx_netlink_unicast+0x10/0x10 [ 42.052092][ T589] ? find_held_lock+0x2c/0x110 [ 42.052329][ T589] netlink_sendmsg+0x723/0xbe0 [ 42.052560][ T589] ? __pfx_netlink_sendmsg+0x10/0x10 [ 42.052791][ T589] ____sys_sendmsg+0x7ac/0xa10 [ 42.053028][ T589] ? __pfx_____sys_sendmsg+0x10/0x10 [ 42.053248][ T589] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 42.053536][ T589] ___sys_sendmsg+0xee/0x170 [ 42.053768][ T589] ? __pfx____sys_sendmsg+0x10/0x10 [ 42.053998][ T589] ? kasan_save_stack+0x34/0x50 [ 42.054228][ T589] ? kasan_save_stack+0x24/0x50 [ 42.054457][ T589] ? __kasan_record_aux_stack+0x8e/0xa0 [ 42.054703][ T589] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 42.054996][ T589] ? __x64_sys_close+0x7c/0xd0 [ 42.055254][ T589] ? do_syscall_64+0xc1/0x1d0 [ 42.055503][ T589] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 42.055790][ T589] ? __lock_acquire+0xb9a/0x1680 [ 42.056030][ T589] ? find_held_lock+0x2c/0x110 [ 42.056262][ T589] ? __lock_release+0x103/0x460 [ 42.056482][ T589] ? __virt_addr_valid+0x22b/0x430 [ 42.056721][ T589] ? __pfx___lock_release+0x10/0x10 [ 42.056949][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 42.057182][ T589] __sys_sendmsg+0x109/0x1a0 [ 42.057419][ T589] ? __pfx___sys_sendmsg+0x10/0x10 [ 42.057648][ T589] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 42.057944][ T589] do_syscall_64+0xc1/0x1d0 [ 42.058186][ T589] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 42.058470][ T589] RIP: 0033:0x7f30ad3f19a7 [ 42.058716][ T589] 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 [ 42.059530][ T589] RSP: 002b:00007ffdc7a37408 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 42.059888][ T589] RAX: ffffffffffffffda RBX: 00007ffdc7a37b30 RCX: 00007f30ad3f19a7 [ 42.060233][ T589] RDX: 0000000000000000 RSI: 00007ffdc7a37470 RDI: 0000000000000005 [ 42.060577][ T589] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 42.060922][ T589] R10: 00007f30ad2afef8 R11: 0000000000000246 R12: 0000000000000002 [ 42.061282][ T589] R13: 0000000067790107 R14: 0000000000498600 R15: 0000000000000000 [ 42.061635][ T589]