[ 74.912726][ T1038] 8021q: 802.1Q VLAN Support v1.8 [ 76.672983][ T1063] br1: port 1(veth1) entered blocking state [ 76.673333][ T1063] br1: port 1(veth1) entered disabled state [ 76.673651][ T1063] veth1: entered allmulticast mode [ 76.676108][ T1063] veth1: entered promiscuous mode [ 76.761740][ T45] br1: port 1(veth1) entered blocking state [ 76.762031][ T45] br1: port 1(veth1) entered forwarding state [ 94.466023][ T1202] br1: port 1(veth1) entered disabled state [ 94.542851][ T1203] veth1: left allmulticast mode [ 94.543107][ T1203] veth1: left promiscuous mode [ 94.543448][ T1203] br1: port 1(veth1) entered disabled state [ 95.744010][ T1216] [ 95.744232][ T1216] ============================================ [ 95.744428][ T1216] WARNING: possible recursive locking detected [ 95.744624][ T1216] 6.13.0-rc5-virtme #1 Not tainted [ 95.744774][ T1216] -------------------------------------------- [ 95.744955][ T1216] ip/1216 is trying to acquire lock: [ 95.745100][ T1216] ffffffffa39d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 95.745417][ T1216] [ 95.745417][ T1216] but task is already holding lock: [ 95.745636][ T1216] ffffffffa39d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 95.745943][ T1216] [ 95.745943][ T1216] other info that might help us debug this: [ 95.746158][ T1216] Possible unsafe locking scenario: [ 95.746158][ T1216] [ 95.746371][ T1216] CPU0 [ 95.746480][ T1216] ---- [ 95.746588][ T1216] lock((netdev_chain).rwsem); [ 95.746735][ T1216] lock((netdev_chain).rwsem); [ 95.746877][ T1216] [ 95.746877][ T1216] *** DEADLOCK *** [ 95.746877][ T1216] [ 95.747099][ T1216] May be due to missing lock nesting notation [ 95.747099][ T1216] [ 95.747309][ T1216] 2 locks held by ip/1216: [ 95.747453][ T1216] #0: ffffffffa39e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 95.747719][ T1216] #1: ffffffffa39d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 95.748016][ T1216] [ 95.748016][ T1216] stack backtrace: [ 95.748198][ T1216] CPU: 0 UID: 0 PID: 1216 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 95.748417][ T1216] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 95.748599][ T1216] Call Trace: [ 95.748712][ T1216] [ 95.748790][ T1216] dump_stack_lvl+0x82/0xd0 [ 95.748946][ T1216] print_deadlock_bug+0x40a/0x650 [ 95.749095][ T1216] validate_chain+0x5bf/0xae0 [ 95.749244][ T1216] ? __pfx_validate_chain+0x10/0x10 [ 95.749393][ T1216] ? hlock_class+0x4e/0x130 [ 95.749541][ T1216] ? mark_lock+0x38/0x3e0 [ 95.749655][ T1216] __lock_acquire+0xb9a/0x1680 [ 95.749805][ T1216] lock_acquire.part.0+0xeb/0x330 [ 95.749951][ T1216] ? blocking_notifier_call_chain+0x50/0x90 [ 95.750134][ T1216] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 95.750319][ T1216] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 95.750466][ T1216] ? trace_lock_acquire+0x14c/0x1f0 [ 95.750616][ T1216] ? lock_acquire+0x32/0xc0 [ 95.750763][ T1216] ? blocking_notifier_call_chain+0x50/0x90 [ 95.750946][ T1216] down_read+0x9f/0x340 [ 95.751060][ T1216] ? blocking_notifier_call_chain+0x50/0x90 [ 95.751247][ T1216] ? __pfx_down_read+0x10/0x10 [ 95.751407][ T1216] ? __lock_release+0x103/0x460 [ 95.751568][ T1216] ? netconsole_netdev_event+0x2c1/0x620 [ 95.751721][ T1216] ? __pfx___lock_release+0x10/0x10 [ 95.751871][ T1216] blocking_notifier_call_chain+0x50/0x90 [ 95.752019][ T1216] __netdev_upper_dev_unlink+0xd9/0x220 [ 95.752169][ T1216] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 95.752357][ T1216] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 95.752504][ T1216] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 95.752685][ T1216] ? rtnl_is_locked+0x15/0x20 [ 95.752835][ T1216] netdev_upper_dev_unlink+0x71/0xa0 [ 95.752982][ T1216] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 95.753162][ T1216] ? netconsole_netdev_event+0x2c1/0x620 [ 95.753311][ T1216] ? mutex_is_locked+0x1c/0x60 [ 95.753458][ T1216] ? rtnl_is_locked+0x15/0x20 [ 95.753607][ T1216] ? netdev_master_upper_dev_get+0x13/0x120 [ 95.753788][ T1216] vrf_device_event+0x78/0xe0 [vrf] [ 95.753939][ T1216] notifier_call_chain+0xcd/0x150 [ 95.754089][ T1216] blocking_notifier_call_chain+0x66/0x90 [ 95.754236][ T1216] unregister_netdevice_many_notify+0xa7b/0x1580 [ 95.754419][ T1216] ? __lock_release+0x103/0x460 [ 95.754566][ T1216] ? __pfx___lock_release+0x10/0x10 [ 95.754715][ T1216] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 95.754897][ T1216] ? hlock_class+0x4e/0x130 [ 95.755044][ T1216] ? mark_held_locks+0x9e/0xe0 [ 95.755193][ T1216] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 95.755344][ T1216] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 95.755534][ T1216] rtnl_dellink+0x348/0xa40 [ 95.755682][ T1216] ? __pfx_rtnl_dellink+0x10/0x10 [ 95.755847][ T1216] ? find_held_lock+0x2c/0x110 [ 95.755999][ T1216] ? __lock_release+0x103/0x460 [ 95.756147][ T1216] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 95.756294][ T1216] ? __pfx___lock_release+0x10/0x10 [ 95.756443][ T1216] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 95.756598][ T1216] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 95.756745][ T1216] ? __pfx_rtnl_dellink+0x10/0x10 [ 95.756892][ T1216] rtnetlink_rcv_msg+0x712/0xc10 [ 95.757038][ T1216] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 95.757184][ T1216] ? hlock_class+0x4e/0x130 [ 95.757328][ T1216] ? mark_lock+0x38/0x3e0 [ 95.757442][ T1216] ? __lock_acquire+0xb9a/0x1680 [ 95.757588][ T1216] netlink_rcv_skb+0x130/0x360 [ 95.757738][ T1216] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 95.757883][ T1216] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 95.758034][ T1216] ? netlink_deliver_tap+0x13e/0x340 [ 95.758184][ T1216] ? netlink_deliver_tap+0xc3/0x340 [ 95.758333][ T1216] netlink_unicast+0x44b/0x710 [ 95.758478][ T1216] ? __pfx_netlink_unicast+0x10/0x10 [ 95.758625][ T1216] ? find_held_lock+0x2c/0x110 [ 95.758775][ T1216] netlink_sendmsg+0x723/0xbe0 [ 95.758924][ T1216] ? __pfx_netlink_sendmsg+0x10/0x10 [ 95.759073][ T1216] ____sys_sendmsg+0x7ac/0xa10 [ 95.759221][ T1216] ? __pfx_____sys_sendmsg+0x10/0x10 [ 95.759368][ T1216] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 95.759555][ T1216] ___sys_sendmsg+0xee/0x170 [ 95.759699][ T1216] ? __pfx____sys_sendmsg+0x10/0x10 [ 95.759858][ T1216] ? kasan_save_stack+0x34/0x50 [ 95.760009][ T1216] ? kasan_save_stack+0x24/0x50 [ 95.760155][ T1216] ? __kasan_record_aux_stack+0x8e/0xa0 [ 95.760304][ T1216] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 95.760487][ T1216] ? __x64_sys_close+0x7c/0xd0 [ 95.760636][ T1216] ? do_syscall_64+0xc1/0x1d0 [ 95.760783][ T1216] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.760974][ T1216] ? __lock_acquire+0xb9a/0x1680 [ 95.761124][ T1216] ? find_held_lock+0x2c/0x110 [ 95.761277][ T1216] ? __lock_release+0x103/0x460 [ 95.761434][ T1216] ? __virt_addr_valid+0x22b/0x430 [ 95.761586][ T1216] ? __pfx___lock_release+0x10/0x10 [ 95.761731][ T1216] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 95.761882][ T1216] __sys_sendmsg+0x109/0x1a0 [ 95.762030][ T1216] ? __pfx___sys_sendmsg+0x10/0x10 [ 95.762174][ T1216] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 95.762362][ T1216] do_syscall_64+0xc1/0x1d0 [ 95.762509][ T1216] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.762692][ T1216] RIP: 0033:0x7fa1265429a7 [ 95.762845][ T1216] 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 [ 95.763368][ T1216] RSP: 002b:00007fff09b44958 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 95.763592][ T1216] RAX: ffffffffffffffda RBX: 00007fff09b45080 RCX: 00007fa1265429a7 [ 95.763813][ T1216] RDX: 0000000000000000 RSI: 00007fff09b449c0 RDI: 0000000000000005 [ 95.764037][ T1216] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 95.764349][ T1216] R10: 00007fa126400ef8 R11: 0000000000000246 R12: 0000000000000002 [ 95.764569][ T1216] R13: 0000000067792bdc R14: 0000000000498600 R15: 0000000000000000 [ 95.764794][ T1216]