[ 10.869558][ T250] ip (250) used greatest stack depth: 24056 bytes left [ 11.603815][ T272] ip (272) used greatest stack depth: 23728 bytes left [ 13.741990][ T300] 8021q: 802.1Q VLAN Support v1.8 [ 17.302590][ T345] br1: port 1(vx10) entered blocking state [ 17.303127][ T345] br1: port 1(vx10) entered disabled state [ 17.303563][ T345] vx10: entered allmulticast mode [ 17.305665][ T345] vx10: entered promiscuous mode [ 17.306652][ T345] br1: port 1(vx10) entered blocking state [ 17.306985][ T345] br1: port 1(vx10) entered forwarding state [ 17.657584][ T350] br1: port 2(vx20) entered blocking state [ 17.657937][ T350] br1: port 2(vx20) entered disabled state [ 17.658245][ T350] vx20: entered allmulticast mode [ 17.660284][ T350] vx20: entered promiscuous mode [ 17.661093][ T350] br1: port 2(vx20) entered blocking state [ 17.661415][ T350] br1: port 2(vx20) entered forwarding state [ 17.837851][ T352] br1: port 3(veth1) entered blocking state [ 17.838234][ T352] br1: port 3(veth1) entered disabled state [ 17.838881][ T352] veth1: entered allmulticast mode [ 17.840862][ T352] veth1: entered promiscuous mode [ 17.928610][ T40] br1: port 3(veth1) entered blocking state [ 17.929121][ T40] br1: port 3(veth1) entered forwarding state [ 18.164771][ T356] br1: port 4(veth2) entered blocking state [ 18.165185][ T356] br1: port 4(veth2) entered disabled state [ 18.165499][ T356] veth2: entered allmulticast mode [ 18.167448][ T356] veth2: entered promiscuous mode [ 18.249841][ T40] br1: port 4(veth2) entered blocking state [ 18.250189][ T40] br1: port 4(veth2) entered forwarding state [ 21.905353][ T406] br2: port 1(w1) entered blocking state [ 21.905741][ T406] br2: port 1(w1) entered disabled state [ 21.906002][ T406] w1: entered allmulticast mode [ 21.908226][ T406] w1: entered promiscuous mode [ 22.549828][ T414] br2: port 2(vx10) entered blocking state [ 22.550143][ T414] br2: port 2(vx10) entered disabled state [ 22.551606][ T414] vx10: entered allmulticast mode [ 22.553604][ T414] vx10: entered promiscuous mode [ 22.554196][ T414] br2: port 2(vx10) entered blocking state [ 22.554479][ T414] br2: port 2(vx10) entered forwarding state [ 23.185298][ T421] br2: port 3(vx20) entered blocking state [ 23.185598][ T421] br2: port 3(vx20) entered disabled state [ 23.185867][ T421] vx20: entered allmulticast mode [ 23.187852][ T421] vx20: entered promiscuous mode [ 23.188403][ T421] br2: port 3(vx20) entered blocking state [ 23.188672][ T421] br2: port 3(vx20) entered forwarding state [ 23.906776][ T37] br2: port 1(w1) entered blocking state [ 23.907201][ T37] br2: port 1(w1) entered forwarding state [ 26.195248][ T461] br2: port 1(w1) entered blocking state [ 26.195601][ T461] br2: port 1(w1) entered disabled state [ 26.196069][ T461] w1: entered allmulticast mode [ 26.198001][ T461] w1: entered promiscuous mode [ 26.828621][ T469] br2: port 2(vx10) entered blocking state [ 26.828926][ T469] br2: port 2(vx10) entered disabled state [ 26.829204][ T469] vx10: entered allmulticast mode [ 26.831547][ T469] vx10: entered promiscuous mode [ 26.832716][ T469] br2: port 2(vx10) entered blocking state [ 26.832998][ T469] br2: port 2(vx10) entered forwarding state [ 27.441838][ T476] br2: port 3(vx20) entered blocking state [ 27.442138][ T476] br2: port 3(vx20) entered disabled state [ 27.442421][ T476] vx20: entered allmulticast mode [ 27.444827][ T476] vx20: entered promiscuous mode [ 27.445359][ T476] br2: port 3(vx20) entered blocking state [ 27.445627][ T476] br2: port 3(vx20) entered forwarding state [ 28.146727][ T39] br2: port 1(w1) entered blocking state [ 28.147114][ T39] br2: port 1(w1) entered forwarding state [ 43.724849][ T585] ip (585) used greatest stack depth: 23360 bytes left [ 43.800049][ T11] vx20: left allmulticast mode [ 43.800369][ T11] vx20: left promiscuous mode [ 43.800766][ T11] br2: port 3(vx20) entered disabled state [ 43.811528][ T11] vx10: left allmulticast mode [ 43.811736][ T11] vx10: left promiscuous mode [ 43.812046][ T11] br2: port 2(vx10) entered disabled state [ 43.814062][ T11] w1: left allmulticast mode [ 43.814253][ T11] w1: left promiscuous mode [ 43.814568][ T11] br2: port 1(w1) entered disabled state [ 44.403334][ T11] vx20: left allmulticast mode [ 44.403895][ T11] vx20: left promiscuous mode [ 44.404252][ T11] br2: port 3(vx20) entered disabled state [ 44.406290][ T11] vx10: left allmulticast mode [ 44.406945][ T11] vx10: left promiscuous mode [ 44.407309][ T11] br2: port 2(vx10) entered disabled state [ 44.410464][ T11] w1: left allmulticast mode [ 44.410730][ T11] w1: left promiscuous mode [ 44.411087][ T11] br2: port 1(w1) entered disabled state [ 46.799839][ T617] br1: port 4(veth2) entered disabled state [ 46.870931][ T619] veth2: left allmulticast mode [ 46.871176][ T619] veth2: left promiscuous mode [ 46.871524][ T619] br1: port 4(veth2) entered disabled state [ 47.131498][ T622] br1: port 3(veth1) entered disabled state [ 47.208222][ T623] veth1: left allmulticast mode [ 47.209523][ T623] veth1: left promiscuous mode [ 47.209963][ T623] br1: port 3(veth1) entered disabled state [ 47.364409][ T625] vx20: left allmulticast mode [ 47.365119][ T625] vx20: left promiscuous mode [ 47.365469][ T625] br1: port 2(vx20) entered disabled state [ 47.710942][ T629] vx10: left allmulticast mode [ 47.711245][ T629] vx10: left promiscuous mode [ 47.711578][ T629] br1: port 1(vx10) entered disabled state [ 48.523133][ T638] [ 48.523313][ T638] ============================================ [ 48.523526][ T638] WARNING: possible recursive locking detected [ 48.523722][ T638] 6.13.0-rc5-virtme #1 Not tainted [ 48.523881][ T638] -------------------------------------------- [ 48.524079][ T638] ip/638 is trying to acquire lock: [ 48.524242][ T638] ffffffffb43d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 48.524572][ T638] [ 48.524572][ T638] but task is already holding lock: [ 48.524815][ T638] ffffffffb43d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 48.525146][ T638] [ 48.525146][ T638] other info that might help us debug this: [ 48.525390][ T638] Possible unsafe locking scenario: [ 48.525390][ T638] [ 48.525630][ T638] CPU0 [ 48.525752][ T638] ---- [ 48.525876][ T638] lock((netdev_chain).rwsem); [ 48.526039][ T638] lock((netdev_chain).rwsem); [ 48.526202][ T638] [ 48.526202][ T638] *** DEADLOCK *** [ 48.526202][ T638] [ 48.526440][ T638] May be due to missing lock nesting notation [ 48.526440][ T638] [ 48.526677][ T638] 2 locks held by ip/638: [ 48.526800][ T638] #0: ffffffffb43e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 48.527090][ T638] #1: ffffffffb43d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 48.527419][ T638] [ 48.527419][ T638] stack backtrace: [ 48.527616][ T638] CPU: 3 UID: 0 PID: 638 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 48.527866][ T638] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 48.528075][ T638] Call Trace: [ 48.528201][ T638] [ 48.528285][ T638] dump_stack_lvl+0x82/0xd0 [ 48.528454][ T638] print_deadlock_bug+0x40a/0x650 [ 48.528623][ T638] validate_chain+0x5bf/0xae0 [ 48.528791][ T638] ? __pfx_validate_chain+0x10/0x10 [ 48.528959][ T638] ? hlock_class+0x4e/0x130 [ 48.529118][ T638] ? mark_lock+0x38/0x3e0 [ 48.529241][ T638] __lock_acquire+0xb9a/0x1680 [ 48.529406][ T638] lock_acquire.part.0+0xeb/0x330 [ 48.529570][ T638] ? blocking_notifier_call_chain+0x50/0x90 [ 48.529778][ T638] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 48.529986][ T638] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 48.530150][ T638] ? trace_lock_acquire+0x14c/0x1f0 [ 48.530312][ T638] ? lock_acquire+0x32/0xc0 [ 48.530482][ T638] ? blocking_notifier_call_chain+0x50/0x90 [ 48.530685][ T638] down_read+0x9f/0x340 [ 48.530808][ T638] ? blocking_notifier_call_chain+0x50/0x90 [ 48.531029][ T638] ? __pfx_down_read+0x10/0x10 [ 48.531185][ T638] ? __lock_release+0x103/0x460 [ 48.531340][ T638] ? netconsole_netdev_event+0x2c1/0x620 [ 48.531501][ T638] ? __pfx___lock_release+0x10/0x10 [ 48.531670][ T638] blocking_notifier_call_chain+0x50/0x90 [ 48.531837][ T638] __netdev_upper_dev_unlink+0xd9/0x220 [ 48.532002][ T638] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 48.532203][ T638] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 48.532363][ T638] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 48.532566][ T638] ? rtnl_is_locked+0x15/0x20 [ 48.532730][ T638] netdev_upper_dev_unlink+0x71/0xa0 [ 48.532898][ T638] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 48.533098][ T638] ? netconsole_netdev_event+0x2c1/0x620 [ 48.533261][ T638] ? mutex_is_locked+0x1c/0x60 [ 48.533423][ T638] ? rtnl_is_locked+0x15/0x20 [ 48.533588][ T638] ? netdev_master_upper_dev_get+0x13/0x120 [ 48.533790][ T638] vrf_device_event+0x78/0xe0 [vrf] [ 48.533955][ T638] notifier_call_chain+0xcd/0x150 [ 48.534125][ T638] blocking_notifier_call_chain+0x66/0x90 [ 48.534286][ T638] unregister_netdevice_many_notify+0xa7b/0x1580 [ 48.534488][ T638] ? hlock_class+0x4e/0x130 [ 48.534649][ T638] ? mark_lock+0x38/0x3e0 [ 48.534773][ T638] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 48.534975][ T638] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 48.535186][ T638] ? kfree+0xf3/0x330 [ 48.535310][ T638] ? vlan_vid_del+0x310/0x5e0 [ 48.535477][ T638] ? vlan_vid_del+0x310/0x5e0 [ 48.535637][ T638] rtnl_dellink+0x348/0xa40 [ 48.535802][ T638] ? __pfx_rtnl_dellink+0x10/0x10 [ 48.535980][ T638] ? find_held_lock+0x2c/0x110 [ 48.536145][ T638] ? __lock_release+0x103/0x460 [ 48.536306][ T638] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 48.536473][ T638] ? __pfx___lock_release+0x10/0x10 [ 48.536638][ T638] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 48.536800][ T638] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 48.536961][ T638] ? __pfx_rtnl_dellink+0x10/0x10 [ 48.537125][ T638] rtnetlink_rcv_msg+0x712/0xc10 [ 48.537285][ T638] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 48.537447][ T638] ? hlock_class+0x4e/0x130 [ 48.537612][ T638] ? mark_lock+0x38/0x3e0 [ 48.537737][ T638] ? __lock_acquire+0xb9a/0x1680 [ 48.537901][ T638] netlink_rcv_skb+0x130/0x360 [ 48.538064][ T638] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 48.538225][ T638] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 48.538391][ T638] ? netlink_deliver_tap+0x13e/0x340 [ 48.538554][ T638] ? netlink_deliver_tap+0xc3/0x340 [ 48.538721][ T638] netlink_unicast+0x44b/0x710 [ 48.538884][ T638] ? __pfx_netlink_unicast+0x10/0x10 [ 48.539047][ T638] ? find_held_lock+0x2c/0x110 [ 48.539213][ T638] netlink_sendmsg+0x723/0xbe0 [ 48.539374][ T638] ? __pfx_netlink_sendmsg+0x10/0x10 [ 48.539538][ T638] ____sys_sendmsg+0x7ac/0xa10 [ 48.539704][ T638] ? __pfx_____sys_sendmsg+0x10/0x10 [ 48.539868][ T638] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 48.540085][ T638] ___sys_sendmsg+0xee/0x170 [ 48.540248][ T638] ? __pfx____sys_sendmsg+0x10/0x10 [ 48.540413][ T638] ? kasan_save_stack+0x34/0x50 [ 48.540576][ T638] ? kasan_save_stack+0x24/0x50 [ 48.540738][ T638] ? __kasan_record_aux_stack+0x8e/0xa0 [ 48.540902][ T638] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 48.541126][ T638] ? __x64_sys_close+0x7c/0xd0 [ 48.541299][ T638] ? do_syscall_64+0xc1/0x1d0 [ 48.541462][ T638] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 48.541665][ T638] ? __lock_acquire+0xb9a/0x1680 [ 48.541831][ T638] ? find_held_lock+0x2c/0x110 [ 48.541996][ T638] ? __lock_release+0x103/0x460 [ 48.542158][ T638] ? __virt_addr_valid+0x22b/0x430 [ 48.542324][ T638] ? __pfx___lock_release+0x10/0x10 [ 48.542488][ T638] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 48.542654][ T638] __sys_sendmsg+0x109/0x1a0 [ 48.542817][ T638] ? __pfx___sys_sendmsg+0x10/0x10 [ 48.542980][ T638] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 48.543184][ T638] do_syscall_64+0xc1/0x1d0 [ 48.543346][ T638] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 48.543545][ T638] RIP: 0033:0x7f79913659a7 [ 48.543726][ T638] 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 [ 48.544290][ T638] RSP: 002b:00007ffeb1e55118 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 48.544533][ T638] RAX: ffffffffffffffda RBX: 00007ffeb1e55840 RCX: 00007f79913659a7 [ 48.544779][ T638] RDX: 0000000000000000 RSI: 00007ffeb1e55180 RDI: 0000000000000005 [ 48.545025][ T638] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 48.545262][ T638] R10: 00007f7991223ef8 R11: 0000000000000246 R12: 0000000000000002 [ 48.545504][ T638] R13: 0000000067792e9a R14: 0000000000498600 R15: 0000000000000000 [ 48.545757][ T638]