[ 10.414867][ T249] ip (249) used greatest stack depth: 23832 bytes left [ 13.102517][ T301] 8021q: 802.1Q VLAN Support v1.8 [ 16.186263][ T347] br1: port 1(vx10) entered blocking state [ 16.186688][ T347] br1: port 1(vx10) entered disabled state [ 16.187048][ T347] vx10: entered allmulticast mode [ 16.189967][ T347] vx10: entered promiscuous mode [ 16.190901][ T347] br1: port 1(vx10) entered blocking state [ 16.191239][ T347] br1: port 1(vx10) entered forwarding state [ 16.507101][ T352] br1: port 2(vx20) entered blocking state [ 16.507430][ T352] br1: port 2(vx20) entered disabled state [ 16.507716][ T352] vx20: entered allmulticast mode [ 16.509639][ T352] vx20: entered promiscuous mode [ 16.510595][ T352] br1: port 2(vx20) entered blocking state [ 16.510895][ T352] br1: port 2(vx20) entered forwarding state [ 16.672815][ T354] br1: port 3(veth1) entered blocking state [ 16.674691][ T354] br1: port 3(veth1) entered disabled state [ 16.675192][ T354] veth1: entered allmulticast mode [ 16.677926][ T354] veth1: entered promiscuous mode [ 16.742893][ T40] br1: port 3(veth1) entered blocking state [ 16.743350][ T40] br1: port 3(veth1) entered forwarding state [ 16.978538][ T358] br1: port 4(veth2) entered blocking state [ 16.979037][ T358] br1: port 4(veth2) entered disabled state [ 16.979618][ T358] veth2: entered allmulticast mode [ 16.983550][ T358] veth2: entered promiscuous mode [ 17.058794][ T124] br1: port 4(veth2) entered blocking state [ 17.059124][ T124] br1: port 4(veth2) entered forwarding state [ 20.436469][ T408] br2: port 1(w1) entered blocking state [ 20.436695][ T408] br2: port 1(w1) entered disabled state [ 20.436920][ T408] w1: entered allmulticast mode [ 20.438824][ T408] w1: entered promiscuous mode [ 21.095848][ T416] br2: port 2(vx10) entered blocking state [ 21.096183][ T416] br2: port 2(vx10) entered disabled state [ 21.096506][ T416] vx10: entered allmulticast mode [ 21.101056][ T416] vx10: entered promiscuous mode [ 21.101944][ T416] br2: port 2(vx10) entered blocking state [ 21.102397][ T416] br2: port 2(vx10) entered forwarding state [ 21.700647][ T423] br2: port 3(vx20) entered blocking state [ 21.700994][ T423] br2: port 3(vx20) entered disabled state [ 21.701293][ T423] vx20: entered allmulticast mode [ 21.705567][ T423] vx20: entered promiscuous mode [ 21.706462][ T423] br2: port 3(vx20) entered blocking state [ 21.706858][ T423] br2: port 3(vx20) entered forwarding state [ 22.434832][ T37] br2: port 1(w1) entered blocking state [ 22.435276][ T37] br2: port 1(w1) entered forwarding state [ 24.755067][ T463] br2: port 1(w1) entered blocking state [ 24.755385][ T463] br2: port 1(w1) entered disabled state [ 24.755615][ T463] w1: entered allmulticast mode [ 24.757498][ T463] w1: entered promiscuous mode [ 25.350188][ T471] br2: port 2(vx10) entered blocking state [ 25.350708][ T471] br2: port 2(vx10) entered disabled state [ 25.351159][ T471] vx10: entered allmulticast mode [ 25.354558][ T471] vx10: entered promiscuous mode [ 25.355214][ T471] br2: port 2(vx10) entered blocking state [ 25.355478][ T471] br2: port 2(vx10) entered forwarding state [ 25.894473][ T478] br2: port 3(vx20) entered blocking state [ 25.894744][ T478] br2: port 3(vx20) entered disabled state [ 25.895007][ T478] vx20: entered allmulticast mode [ 25.896887][ T478] vx20: entered promiscuous mode [ 25.897444][ T478] br2: port 3(vx20) entered blocking state [ 25.897897][ T478] br2: port 3(vx20) entered forwarding state [ 26.519495][ T37] br2: port 1(w1) entered blocking state [ 26.519738][ T37] br2: port 1(w1) entered forwarding state [ 41.976684][ T66] vx20: left allmulticast mode [ 41.976974][ T66] vx20: left promiscuous mode [ 41.977534][ T66] br2: port 3(vx20) entered disabled state [ 41.980287][ T66] vx10: left allmulticast mode [ 41.980491][ T66] vx10: left promiscuous mode [ 41.980780][ T66] br2: port 2(vx10) entered disabled state [ 41.983056][ T66] w1: left allmulticast mode [ 41.983286][ T66] w1: left promiscuous mode [ 41.983584][ T66] br2: port 1(w1) entered disabled state [ 42.401566][ T66] vx20: left allmulticast mode [ 42.401837][ T66] vx20: left promiscuous mode [ 42.402181][ T66] br2: port 3(vx20) entered disabled state [ 42.404944][ T66] vx10: left allmulticast mode [ 42.405395][ T66] vx10: left promiscuous mode [ 42.405696][ T66] br2: port 2(vx10) entered disabled state [ 42.407694][ T66] w1: left allmulticast mode [ 42.407915][ T66] w1: left promiscuous mode [ 42.409173][ T66] br2: port 1(w1) entered disabled state [ 42.933397][ T597] ip (597) used greatest stack depth: 23760 bytes left [ 44.605441][ T618] br1: port 4(veth2) entered disabled state [ 44.704549][ T619] veth2: left allmulticast mode [ 44.704826][ T619] veth2: left promiscuous mode [ 44.705210][ T619] br1: port 4(veth2) entered disabled state [ 44.939199][ T622] br1: port 3(veth1) entered disabled state [ 45.027402][ T623] veth1: left allmulticast mode [ 45.027628][ T623] veth1: left promiscuous mode [ 45.027935][ T623] br1: port 3(veth1) entered disabled state [ 45.177547][ T625] vx20: left allmulticast mode [ 45.177876][ T625] vx20: left promiscuous mode [ 45.178225][ T625] br1: port 2(vx20) entered disabled state [ 45.515426][ T629] vx10: left allmulticast mode [ 45.515704][ T629] vx10: left promiscuous mode [ 45.516048][ T629] br1: port 1(vx10) entered disabled state [ 46.407260][ T638] [ 46.407453][ T638] ============================================ [ 46.407636][ T638] WARNING: possible recursive locking detected [ 46.407815][ T638] 6.13.0-rc5-virtme #1 Not tainted [ 46.407970][ T638] -------------------------------------------- [ 46.408151][ T638] ip/638 is trying to acquire lock: [ 46.408296][ T638] ffffffffa43d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 46.408626][ T638] [ 46.408626][ T638] but task is already holding lock: [ 46.408844][ T638] ffffffffa43d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 46.409147][ T638] [ 46.409147][ T638] other info that might help us debug this: [ 46.409369][ T638] Possible unsafe locking scenario: [ 46.409369][ T638] [ 46.409589][ T638] CPU0 [ 46.409701][ T638] ---- [ 46.409811][ T638] lock((netdev_chain).rwsem); [ 46.409962][ T638] lock((netdev_chain).rwsem); [ 46.410115][ T638] [ 46.410115][ T638] *** DEADLOCK *** [ 46.410115][ T638] [ 46.410340][ T638] May be due to missing lock nesting notation [ 46.410340][ T638] [ 46.410561][ T638] 2 locks held by ip/638: [ 46.410672][ T638] #0: ffffffffa43e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 46.410949][ T638] #1: ffffffffa43d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 46.411249][ T638] [ 46.411249][ T638] stack backtrace: [ 46.411429][ T638] CPU: 0 UID: 0 PID: 638 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 46.411653][ T638] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 46.411843][ T638] Call Trace: [ 46.411959][ T638] [ 46.412036][ T638] dump_stack_lvl+0x82/0xd0 [ 46.412196][ T638] print_deadlock_bug+0x40a/0x650 [ 46.412345][ T638] validate_chain+0x5bf/0xae0 [ 46.412494][ T638] ? __pfx_validate_chain+0x10/0x10 [ 46.412643][ T638] ? hlock_class+0x4e/0x130 [ 46.412791][ T638] ? mark_lock+0x38/0x3e0 [ 46.412912][ T638] __lock_acquire+0xb9a/0x1680 [ 46.413061][ T638] lock_acquire.part.0+0xeb/0x330 [ 46.413211][ T638] ? blocking_notifier_call_chain+0x50/0x90 [ 46.413399][ T638] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 46.413597][ T638] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.413750][ T638] ? trace_lock_acquire+0x14c/0x1f0 [ 46.413902][ T638] ? lock_acquire+0x32/0xc0 [ 46.414056][ T638] ? blocking_notifier_call_chain+0x50/0x90 [ 46.414246][ T638] down_read+0x9f/0x340 [ 46.414357][ T638] ? blocking_notifier_call_chain+0x50/0x90 [ 46.414545][ T638] ? __pfx_down_read+0x10/0x10 [ 46.414694][ T638] ? __lock_release+0x103/0x460 [ 46.414842][ T638] ? netconsole_netdev_event+0x2c1/0x620 [ 46.414991][ T638] ? __pfx___lock_release+0x10/0x10 [ 46.415150][ T638] blocking_notifier_call_chain+0x50/0x90 [ 46.415304][ T638] __netdev_upper_dev_unlink+0xd9/0x220 [ 46.415457][ T638] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 46.415641][ T638] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 46.415789][ T638] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 46.415975][ T638] ? rtnl_is_locked+0x15/0x20 [ 46.416129][ T638] netdev_upper_dev_unlink+0x71/0xa0 [ 46.416280][ T638] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 46.416470][ T638] ? netconsole_netdev_event+0x2c1/0x620 [ 46.416616][ T638] ? mutex_is_locked+0x1c/0x60 [ 46.416761][ T638] ? rtnl_is_locked+0x15/0x20 [ 46.416907][ T638] ? netdev_master_upper_dev_get+0x13/0x120 [ 46.417088][ T638] vrf_device_event+0x78/0xe0 [vrf] [ 46.417238][ T638] notifier_call_chain+0xcd/0x150 [ 46.417390][ T638] blocking_notifier_call_chain+0x66/0x90 [ 46.417539][ T638] unregister_netdevice_many_notify+0xa7b/0x1580 [ 46.417722][ T638] ? hlock_class+0x4e/0x130 [ 46.417866][ T638] ? mark_lock+0x38/0x3e0 [ 46.417979][ T638] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 46.418177][ T638] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 46.418368][ T638] ? kfree+0xf3/0x330 [ 46.418482][ T638] ? vlan_vid_del+0x310/0x5e0 [ 46.418640][ T638] ? vlan_vid_del+0x310/0x5e0 [ 46.418794][ T638] rtnl_dellink+0x348/0xa40 [ 46.418945][ T638] ? __pfx_rtnl_dellink+0x10/0x10 [ 46.419114][ T638] ? find_held_lock+0x2c/0x110 [ 46.419268][ T638] ? __lock_release+0x103/0x460 [ 46.419417][ T638] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 46.419567][ T638] ? __pfx___lock_release+0x10/0x10 [ 46.419711][ T638] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.419864][ T638] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 46.420010][ T638] ? __pfx_rtnl_dellink+0x10/0x10 [ 46.420156][ T638] rtnetlink_rcv_msg+0x712/0xc10 [ 46.420303][ T638] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 46.420447][ T638] ? hlock_class+0x4e/0x130 [ 46.420597][ T638] ? mark_lock+0x38/0x3e0 [ 46.420727][ T638] ? __lock_acquire+0xb9a/0x1680 [ 46.420879][ T638] netlink_rcv_skb+0x130/0x360 [ 46.421024][ T638] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 46.421173][ T638] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 46.421351][ T638] ? netlink_deliver_tap+0x13e/0x340 [ 46.421505][ T638] ? netlink_deliver_tap+0xc3/0x340 [ 46.421661][ T638] netlink_unicast+0x44b/0x710 [ 46.421814][ T638] ? __pfx_netlink_unicast+0x10/0x10 [ 46.421961][ T638] ? find_held_lock+0x2c/0x110 [ 46.422112][ T638] netlink_sendmsg+0x723/0xbe0 [ 46.422263][ T638] ? __pfx_netlink_sendmsg+0x10/0x10 [ 46.422412][ T638] ____sys_sendmsg+0x7ac/0xa10 [ 46.422557][ T638] ? __pfx_____sys_sendmsg+0x10/0x10 [ 46.422703][ T638] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 46.422894][ T638] ___sys_sendmsg+0xee/0x170 [ 46.423042][ T638] ? __pfx____sys_sendmsg+0x10/0x10 [ 46.423188][ T638] ? kasan_save_stack+0x34/0x50 [ 46.423349][ T638] ? kasan_save_stack+0x24/0x50 [ 46.423494][ T638] ? __kasan_record_aux_stack+0x8e/0xa0 [ 46.423653][ T638] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 46.423843][ T638] ? __x64_sys_close+0x7c/0xd0 [ 46.424000][ T638] ? do_syscall_64+0xc1/0x1d0 [ 46.424152][ T638] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 46.424339][ T638] ? __lock_acquire+0xb9a/0x1680 [ 46.424496][ T638] ? find_held_lock+0x2c/0x110 [ 46.424643][ T638] ? __lock_release+0x103/0x460 [ 46.424799][ T638] ? __virt_addr_valid+0x22b/0x430 [ 46.424947][ T638] ? __pfx___lock_release+0x10/0x10 [ 46.425099][ T638] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.425281][ T638] __sys_sendmsg+0x109/0x1a0 [ 46.425430][ T638] ? __pfx___sys_sendmsg+0x10/0x10 [ 46.425581][ T638] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 46.425776][ T638] do_syscall_64+0xc1/0x1d0 [ 46.425924][ T638] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 46.426114][ T638] RIP: 0033:0x7fec2055a9a7 [ 46.426270][ 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 [ 46.426779][ T638] RSP: 002b:00007ffefab29b18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 46.427001][ T638] RAX: ffffffffffffffda RBX: 00007ffefab2a240 RCX: 00007fec2055a9a7 [ 46.427234][ T638] RDX: 0000000000000000 RSI: 00007ffefab29b80 RDI: 0000000000000005 [ 46.427459][ T638] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 46.427678][ T638] R10: 00007fec20418ef8 R11: 0000000000000246 R12: 0000000000000002 [ 46.427895][ T638] R13: 0000000067790438 R14: 0000000000498600 R15: 0000000000000000 [ 46.428119][ T638]