[ 11.043324][ T247] ip (247) used greatest stack depth: 23136 bytes left [ 13.977967][ T299] 8021q: 802.1Q VLAN Support v1.8 [ 17.058189][ T344] br1: port 1(vx100) entered blocking state [ 17.059586][ T344] br1: port 1(vx100) entered disabled state [ 17.059992][ T344] vx100: entered allmulticast mode [ 17.068696][ T344] vx100: entered promiscuous mode [ 17.069621][ T344] br1: port 1(vx100) entered blocking state [ 17.069977][ T344] br1: port 1(vx100) entered forwarding state [ 17.235222][ T346] br1: port 2(veth1) entered blocking state [ 17.235625][ T346] br1: port 2(veth1) entered disabled state [ 17.235969][ T346] veth1: entered allmulticast mode [ 17.238063][ T346] veth1: entered promiscuous mode [ 17.314321][ T45] br1: port 2(veth1) entered blocking state [ 17.314735][ T45] br1: port 2(veth1) entered forwarding state [ 17.628527][ T352] br2: port 1(vx200) entered blocking state [ 17.628889][ T352] br2: port 1(vx200) entered disabled state [ 17.629261][ T352] vx200: entered allmulticast mode [ 17.631568][ T352] vx200: entered promiscuous mode [ 17.641480][ T352] br2: port 1(vx200) entered blocking state [ 17.641855][ T352] br2: port 1(vx200) entered forwarding state [ 17.914815][ T355] br2: port 2(veth2.20) entered blocking state [ 17.915086][ T355] br2: port 2(veth2.20) entered disabled state [ 17.915367][ T355] veth2.20: entered allmulticast mode [ 17.918148][ T355] veth2.20: entered promiscuous mode [ 17.994242][ T357] veth2: entered allmulticast mode [ 17.994515][ T357] veth2: entered promiscuous mode [ 17.996028][ T357] br2: port 2(veth2.20) entered blocking state [ 17.996454][ T357] br2: port 2(veth2.20) entered forwarding state [ 21.094631][ T402] br3: port 1(w1) entered blocking state [ 21.094863][ T402] br3: port 1(w1) entered disabled state [ 21.095090][ T402] w1: entered allmulticast mode [ 21.097750][ T402] w1: entered promiscuous mode [ 21.567414][ T408] br3: port 2(vx100) entered blocking state [ 21.567727][ T408] br3: port 2(vx100) entered disabled state [ 21.568009][ T408] vx100: entered allmulticast mode [ 21.569922][ T408] vx100: entered promiscuous mode [ 21.570956][ T408] br3: port 2(vx100) entered blocking state [ 21.571234][ T408] br3: port 2(vx100) entered forwarding state [ 22.165675][ T45] br3: port 1(w1) entered blocking state [ 22.166145][ T45] br3: port 1(w1) entered forwarding state [ 24.597109][ T456] br3: port 1(w1) entered blocking state [ 24.597645][ T456] br3: port 1(w1) entered disabled state [ 24.597949][ T456] w1: entered allmulticast mode [ 24.600040][ T456] w1: entered promiscuous mode [ 25.065960][ T462] br3: port 2(vx200) entered blocking state [ 25.066236][ T462] br3: port 2(vx200) entered disabled state [ 25.066541][ T462] vx200: entered allmulticast mode [ 25.068520][ T462] vx200: entered promiscuous mode [ 25.069369][ T462] br3: port 2(vx200) entered blocking state [ 25.069623][ T462] br3: port 2(vx200) entered forwarding state [ 25.678248][ T45] br3: port 1(w1) entered blocking state [ 25.678538][ T45] br3: port 1(w1) entered forwarding state [ 27.423458][ T501] br3: port 3(w1.20) entered blocking state [ 27.423805][ T501] br3: port 3(w1.20) entered disabled state [ 27.424072][ T501] w1.20: entered allmulticast mode [ 27.426257][ T501] w1.20: entered promiscuous mode [ 27.986928][ T514] br3: port 3(w1.20) entered blocking state [ 27.987228][ T514] br3: port 3(w1.20) entered forwarding state [ 37.926529][ T11] w1.20: left allmulticast mode [ 37.926965][ T11] w1.20: left promiscuous mode [ 37.927676][ T11] br3: port 3(w1.20) entered disabled state [ 37.931535][ T11] vx200: left allmulticast mode [ 37.931890][ T11] vx200: left promiscuous mode [ 37.932334][ T11] br3: port 2(vx200) entered disabled state [ 37.934904][ T11] w1: left allmulticast mode [ 37.935166][ T11] w1: left promiscuous mode [ 37.935717][ T11] br3: port 1(w1) entered disabled state [ 38.400078][ T11] vx100: left allmulticast mode [ 38.400292][ T11] vx100: left promiscuous mode [ 38.401017][ T11] br3: port 2(vx100) entered disabled state [ 38.403192][ T11] w1: left allmulticast mode [ 38.403432][ T11] w1: left promiscuous mode [ 38.403780][ T11] br3: port 1(w1) entered disabled state [ 40.392804][ T612] vx200: left allmulticast mode [ 40.393088][ T612] vx200: left promiscuous mode [ 40.393838][ T612] br2: port 1(vx200) entered disabled state [ 40.657314][ T615] veth2: left allmulticast mode [ 40.657649][ T615] veth2: left promiscuous mode [ 40.660428][ T615] br2: port 2(veth2.20) entered disabled state [ 40.681001][ T615] veth2.20 (unregistering): left allmulticast mode [ 40.681459][ T615] veth2.20 (unregistering): left promiscuous mode [ 40.681948][ T615] br2: port 2(veth2.20) entered disabled state [ 40.683016][ T615] [ 40.683125][ T615] ============================================ [ 40.683337][ T615] WARNING: possible recursive locking detected [ 40.683546][ T615] 6.13.0-rc5-virtme #1 Not tainted [ 40.683713][ T615] -------------------------------------------- [ 40.683924][ T615] ip/615 is trying to acquire lock: [ 40.684098][ T615] ffffffffb23d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 40.684447][ T615] [ 40.684447][ T615] but task is already holding lock: [ 40.684693][ T615] ffffffffb23d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 40.685032][ T615] [ 40.685032][ T615] other info that might help us debug this: [ 40.685281][ T615] Possible unsafe locking scenario: [ 40.685281][ T615] [ 40.685531][ T615] CPU0 [ 40.685664][ T615] ---- [ 40.685796][ T615] lock((netdev_chain).rwsem); [ 40.685967][ T615] lock((netdev_chain).rwsem); [ 40.686139][ T615] [ 40.686139][ T615] *** DEADLOCK *** [ 40.686139][ T615] [ 40.686409][ T615] May be due to missing lock nesting notation [ 40.686409][ T615] [ 40.686666][ T615] 2 locks held by ip/615: [ 40.686801][ T615] #0: ffffffffb23e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 40.687154][ T615] #1: ffffffffb23d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 40.687510][ T615] [ 40.687510][ T615] stack backtrace: [ 40.687710][ T615] CPU: 3 UID: 0 PID: 615 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 40.687956][ T615] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 40.688164][ T615] Call Trace: [ 40.688284][ T615] [ 40.688367][ T615] dump_stack_lvl+0x82/0xd0 [ 40.688533][ T615] print_deadlock_bug+0x40a/0x650 [ 40.688691][ T615] validate_chain+0x5bf/0xae0 [ 40.688849][ T615] ? __pfx_validate_chain+0x10/0x10 [ 40.689015][ T615] ? hlock_class+0x4e/0x130 [ 40.689176][ T615] ? mark_lock+0x38/0x3e0 [ 40.689298][ T615] __lock_acquire+0xb9a/0x1680 [ 40.689459][ T615] ? hlock_class+0x4e/0x130 [ 40.689617][ T615] lock_acquire.part.0+0xeb/0x330 [ 40.689775][ T615] ? blocking_notifier_call_chain+0x50/0x90 [ 40.689970][ T615] ? validate_chain+0x5a7/0xae0 [ 40.690139][ T615] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.690298][ T615] ? trace_lock_acquire+0x14c/0x1f0 [ 40.690456][ T615] ? lock_acquire+0x32/0xc0 [ 40.690610][ T615] ? blocking_notifier_call_chain+0x50/0x90 [ 40.690806][ T615] down_read+0x9f/0x340 [ 40.690927][ T615] ? blocking_notifier_call_chain+0x50/0x90 [ 40.691125][ T615] ? __pfx_down_read+0x10/0x10 [ 40.691287][ T615] ? __lock_acquire+0xb9a/0x1680 [ 40.691446][ T615] blocking_notifier_call_chain+0x50/0x90 [ 40.691602][ T615] __netdev_upper_dev_unlink+0xd9/0x220 [ 40.691759][ T615] ? br_fdb_delete_by_port+0x36/0x260 [bridge] [ 40.691999][ T615] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 40.692193][ T615] ? find_held_lock+0x2c/0x110 [ 40.692351][ T615] ? del_nbp+0x377/0xbe0 [bridge] [ 40.692550][ T615] ? hlock_class+0x4e/0x130 [ 40.692705][ T615] netdev_upper_dev_unlink+0x71/0xa0 [ 40.692877][ T615] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 40.693101][ T615] ? mutex_spin_on_owner+0x1f2/0x2b0 [ 40.693259][ T615] ? rtnl_is_locked+0x15/0x20 [ 40.693418][ T615] del_nbp+0x602/0xbe0 [bridge] [ 40.693612][ T615] br_del_if+0xa3/0x1f0 [bridge] [ 40.693807][ T615] br_device_event+0x53d/0x800 [bridge] [ 40.694007][ T615] ? __pfx_br_device_event+0x10/0x10 [bridge] [ 40.694234][ T615] ? netconsole_netdev_event+0x2c1/0x620 [ 40.694392][ T615] ? packet_notifier+0x3b0/0x810 [ 40.694555][ T615] notifier_call_chain+0xcd/0x150 [ 40.694715][ T615] blocking_notifier_call_chain+0x66/0x90 [ 40.694872][ T615] unregister_netdevice_many_notify+0xa7b/0x1580 [ 40.695071][ T615] ? __lock_release+0x103/0x460 [ 40.695229][ T615] ? __pfx___lock_release+0x10/0x10 [ 40.695385][ T615] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 40.695579][ T615] ? hlock_class+0x4e/0x130 [ 40.695735][ T615] ? mark_held_locks+0x9e/0xe0 [ 40.695893][ T615] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 40.696049][ T615] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 40.696269][ T615] rtnl_dellink+0x348/0xa40 [ 40.696430][ T615] ? __pfx_rtnl_dellink+0x10/0x10 [ 40.696601][ T615] ? find_held_lock+0x2c/0x110 [ 40.696763][ T615] ? __lock_release+0x103/0x460 [ 40.696921][ T615] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 40.697076][ T615] ? __pfx___lock_release+0x10/0x10 [ 40.697234][ T615] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.697399][ T615] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 40.697556][ T615] ? __pfx_rtnl_dellink+0x10/0x10 [ 40.697719][ T615] rtnetlink_rcv_msg+0x712/0xc10 [ 40.697875][ T615] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 40.698031][ T615] ? hlock_class+0x4e/0x130 [ 40.698187][ T615] ? mark_lock+0x38/0x3e0 [ 40.698308][ T615] ? __lock_acquire+0xb9a/0x1680 [ 40.698465][ T615] netlink_rcv_skb+0x130/0x360 [ 40.698628][ T615] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 40.698785][ T615] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 40.698946][ T615] ? netlink_deliver_tap+0x13e/0x340 [ 40.699108][ T615] ? netlink_deliver_tap+0xc3/0x340 [ 40.699265][ T615] netlink_unicast+0x44b/0x710 [ 40.699424][ T615] ? __pfx_netlink_unicast+0x10/0x10 [ 40.699581][ T615] ? find_held_lock+0x2c/0x110 [ 40.699745][ T615] netlink_sendmsg+0x723/0xbe0 [ 40.699905][ T615] ? __pfx_netlink_sendmsg+0x10/0x10 [ 40.700062][ T615] ____sys_sendmsg+0x7ac/0xa10 [ 40.700224][ T615] ? __pfx_____sys_sendmsg+0x10/0x10 [ 40.700383][ T615] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 40.700581][ T615] ___sys_sendmsg+0xee/0x170 [ 40.700739][ T615] ? __pfx____sys_sendmsg+0x10/0x10 [ 40.700902][ T615] ? kasan_save_stack+0x34/0x50 [ 40.701064][ T615] ? kasan_save_stack+0x24/0x50 [ 40.701225][ T615] ? __kasan_record_aux_stack+0x8e/0xa0 [ 40.701384][ T615] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 40.701579][ T615] ? __x64_sys_close+0x7c/0xd0 [ 40.701736][ T615] ? do_syscall_64+0xc1/0x1d0 [ 40.701894][ T615] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 40.702108][ T615] ? __lock_acquire+0xb9a/0x1680 [ 40.702279][ T615] ? find_held_lock+0x2c/0x110 [ 40.702437][ T615] ? __lock_release+0x103/0x460 [ 40.702592][ T615] ? __virt_addr_valid+0x22b/0x430 [ 40.702750][ T615] ? __pfx___lock_release+0x10/0x10 [ 40.702907][ T615] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.703065][ T615] __sys_sendmsg+0x109/0x1a0 [ 40.703232][ T615] ? __pfx___sys_sendmsg+0x10/0x10 [ 40.703390][ T615] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 40.703593][ T615] do_syscall_64+0xc1/0x1d0 [ 40.703761][ T615] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 40.703955][ T615] RIP: 0033:0x7f2ad135e9a7 [ 40.704127][ T615] 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 [ 40.704674][ T615] RSP: 002b:00007ffd522e9d78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 40.704911][ T615] RAX: ffffffffffffffda RBX: 00007ffd522ea4a0 RCX: 00007f2ad135e9a7 [ 40.705149][ T615] RDX: 0000000000000000 RSI: 00007ffd522e9de0 RDI: 0000000000000005 [ 40.705389][ T615] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 40.705625][ T615] R10: 00007f2ad121cef8 R11: 0000000000000246 R12: 0000000000000002 [ 40.705862][ T615] R13: 0000000067790483 R14: 0000000000498600 R15: 0000000000000000 [ 40.706103][ T615] [ 40.956827][ T619] br1: port 2(veth1) entered disabled state [ 41.013598][ T621] veth1: left allmulticast mode [ 41.013784][ T621] veth1: left promiscuous mode [ 41.014038][ T621] br1: port 2(veth1) entered disabled state [ 41.065899][ T622] vx100: left allmulticast mode [ 41.066152][ T622] vx100: left promiscuous mode [ 41.066478][ T622] br1: port 1(vx100) entered disabled state