[ 16.102256][ T294] ip (294) used greatest stack depth: 23552 bytes left [ 16.341786][ T296] eth1: renamed from tmp [ 84.591676][ T550] eth1: renamed from tmp [ 153.298826][ T803] eth1: renamed from tmp [ 221.025345][ T1055] eth1: renamed from tmp [ 289.282969][ T1316] eth1: renamed from tmp [ 359.889407][ T1579] eth1: renamed from tmp [ 699.647850][ T2429] eth1: renamed from tmp [ 734.524874][ T2567] eth2: renamed from tmp [ 950.532580][ T3141] eth1: renamed from tmp [ 1296.132954][ T4066] eth1: renamed from tmp [ 1429.846514][ T4548] eth1: renamed from tmp [ 1465.758063][ T4713] eth1: renamed from tmp [ 1520.287468][ T4940] eth1: renamed from tmp [ 1537.189059][ T5054] eth1: renamed from tmp [ 1554.171976][ T5168] eth1: renamed from tmp [ 1571.005782][ T5283] eth1: renamed from tmp [ 1588.757299][ T5402] eth1: renamed from tmp [ 1605.902085][ T5521] eth1: renamed from tmp [ 1623.111591][ T5639] eth1: renamed from tmp [ 1640.413274][ T5757] eth1: renamed from tmp [ 1657.482457][ T5875] eth1: renamed from tmp [ 1674.872127][ T5993] eth1: renamed from tmp [ 1692.273040][ T6111] eth1: renamed from tmp [ 1709.821208][ T6229] eth1: renamed from tmp [ 1727.599869][ T6349] eth1: renamed from tmp [ 1745.452058][ T6467] eth1: renamed from tmp [ 1762.793889][ T6585] eth1: renamed from tmp [ 1780.350957][ T6703] eth1: renamed from tmp [ 1797.949818][ T6821] eth1: renamed from tmp [ 1815.325029][ T6940] eth1: renamed from tmp [ 1832.358576][ T7058] eth1: renamed from tmp [ 1849.784870][ T7176] eth1: renamed from tmp [ 1867.063862][ T7294] eth1: renamed from tmp [ 1884.297209][ T7413] eth1: renamed from tmp [ 1901.773672][ T7531] eth1: renamed from tmp [ 1918.930862][ T7650] eth1: renamed from tmp [ 1936.102926][ T7768] eth1: renamed from tmp [ 1953.357802][ T7887] eth1: renamed from tmp [ 1970.701781][ T8005] eth1: renamed from tmp [ 1988.163362][ T8123] eth1: renamed from tmp [ 2005.417667][ T8241] eth1: renamed from tmp [ 2022.650171][ T8359] eth1: renamed from tmp [ 2039.776556][ T8477] eth1: renamed from tmp [ 2057.306871][ T8595] eth1: renamed from tmp [ 2092.509891][ T8779] eth1: renamed from tmp [ 2177.349647][ T9104] eth1: renamed from tmp [ 2262.403882][ T9431] eth1: renamed from tmp [ 2352.109062][ T9769] eth1: renamed from tmp [ 2440.850260][T10107] eth1: renamed from tmp [ 2723.462686][T10890] eth1: renamed from tmp [ 2769.661860][T11072] eth2: renamed from tmp [ 2980.489908][T11661] eth1: renamed from tmp [ 3289.643988][T12698] eth1: renamed from tmp [ 3443.677677][T13256] eth1: renamed from tmp [ 3470.466792][T13399] eth1: renamed from tmp [ 3508.003786][T13583] eth1: renamed from tmp [ 3523.902659][T13697] eth1: renamed from tmp [ 3537.602561][T13811] eth1: renamed from tmp [ 3554.159929][T13929] eth1: renamed from tmp [ 3570.682643][T14048] eth1: renamed from tmp [ 3587.350553][T14167] eth1: renamed from tmp [ 3603.919184][T14285] eth1: renamed from tmp [ 3620.510839][T14403] eth1: renamed from tmp [ 3637.068801][T14522] eth1: renamed from tmp [ 3653.664966][T14639] eth1: renamed from tmp [ 3670.368846][T14756] eth1: renamed from tmp [ 3687.007782][T14874] eth1: renamed from tmp [ 3703.736956][T14992] eth1: renamed from tmp [ 3720.702348][T15111] eth1: renamed from tmp [ 3737.538835][T15229] eth1: renamed from tmp [ 3754.807219][T15347] eth1: renamed from tmp [ 3772.201209][T15465] eth1: renamed from tmp [ 3789.437878][T15584] eth1: renamed from tmp [ 3806.787247][T15702] eth1: renamed from tmp [ 3824.082992][T15820] eth1: renamed from tmp [ 3840.691676][T15939] eth1: renamed from tmp [ 3857.209680][T16057] eth1: renamed from tmp [ 3874.064842][T16175] eth1: renamed from tmp [ 3890.768750][T16293] eth1: renamed from tmp [ 3907.248664][T16410] eth1: renamed from tmp [ 3924.046780][T16527] eth1: renamed from tmp [ 3940.830693][T16645] eth1: renamed from tmp [ 3957.465896][T16763] eth1: renamed from tmp [ 3974.059070][T16881] eth1: renamed from tmp [ 3990.667808][T16999] eth1: renamed from tmp [ 4007.361014][T17117] eth1: renamed from tmp [ 4023.869756][T17235] eth1: renamed from tmp [ 4040.337073][T17353] eth1: renamed from tmp [ 4056.812892][T17471] eth1: renamed from tmp [ 4073.377684][T17589] eth1: renamed from tmp [ 4090.143714][T17707] eth1: renamed from tmp [ 4106.923100][T17826] eth1: renamed from tmp [ 4123.696955][T17944] eth1: renamed from tmp [ 4140.249278][T18063] eth1: renamed from tmp [ 4156.861900][T18180] eth1: renamed from tmp [ 4173.527574][T18297] eth1: renamed from tmp [ 4190.384748][T18415] eth1: renamed from tmp [ 4206.972999][T18535] eth1: renamed from tmp [ 4223.975734][T18654] eth1: renamed from tmp [ 4240.620849][T18772] eth1: renamed from tmp [ 4257.413037][T18890] eth1: renamed from tmp [ 4274.132765][T19008] eth1: renamed from tmp [ 4291.005932][T19126] eth1: renamed from tmp [ 4325.853698][T19307] eth1: renamed from tmp [ 4330.013807][T19354] br0: port 1(eth1) entered blocking state [ 4330.014270][T19354] br0: port 1(eth1) entered disabled state [ 4330.014547][T19354] eth1: entered allmulticast mode [ 4330.015765][T19354] eth1: entered promiscuous mode [ 4330.337454][T19358] br0: port 1(eth1) entered blocking state [ 4330.337873][T19358] br0: port 1(eth1) entered forwarding state [ 4330.493724][T19360] br0: port 1(eth1) entered disabled state [ 4330.496092][T19360] br0: port 1(eth1) entered blocking state [ 4330.496359][T19360] br0: port 1(eth1) entered forwarding state [ 4341.531337][T19389] br0: port 1(eth1) entered disabled state [ 4341.541125][T19389] br0: port 1(eth1) entered blocking state [ 4341.541511][T19389] br0: port 1(eth1) entered forwarding state [ 4349.900512][T19434] eth1: left allmulticast mode [ 4349.900729][T19434] eth1: left promiscuous mode [ 4349.901033][T19434] br0: port 1(eth1) entered disabled state [ 4349.906744][T19434] [ 4349.906842][T19434] ============================================ [ 4349.907030][T19434] WARNING: possible recursive locking detected [ 4349.907213][T19434] 6.13.0-rc5-virtme #1 Not tainted [ 4349.907360][T19434] -------------------------------------------- [ 4349.907540][T19434] ip/19434 is trying to acquire lock: [ 4349.907684][T19434] ffffffff929f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 4349.907984][T19434] [ 4349.907984][T19434] but task is already holding lock: [ 4349.908194][T19434] ffffffff929f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 4349.908486][T19434] [ 4349.908486][T19434] other info that might help us debug this: [ 4349.908698][T19434] Possible unsafe locking scenario: [ 4349.908698][T19434] [ 4349.908909][T19434] CPU0 [ 4349.909024][T19434] ---- [ 4349.909131][T19434] lock((netdev_chain).rwsem); [ 4349.909279][T19434] lock((netdev_chain).rwsem); [ 4349.909427][T19434] [ 4349.909427][T19434] *** DEADLOCK *** [ 4349.909427][T19434] [ 4349.909636][T19434] May be due to missing lock nesting notation [ 4349.909636][T19434] [ 4349.909849][T19434] 2 locks held by ip/19434: [ 4349.909995][T19434] #0: ffffffff92a07e88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 4349.910260][T19434] #1: ffffffff929f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 4349.910551][T19434] [ 4349.910551][T19434] stack backtrace: [ 4349.910729][T19434] CPU: 3 UID: 0 PID: 19434 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 4349.910950][T19434] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4349.911133][T19434] Call Trace: [ 4349.911245][T19434] [ 4349.911322][T19434] dump_stack_lvl+0x82/0xd0 [ 4349.911470][T19434] print_deadlock_bug+0x40a/0x650 [ 4349.911621][T19434] validate_chain+0x5bf/0xae0 [ 4349.911771][T19434] ? __pfx_validate_chain+0x10/0x10 [ 4349.911930][T19434] ? hlock_class+0x4e/0x130 [ 4349.912077][T19434] ? mark_lock+0x38/0x3e0 [ 4349.912188][T19434] __lock_acquire+0xb9a/0x1680 [ 4349.912333][T19434] ? spin_bug+0x191/0x1d0 [ 4349.912446][T19434] ? debug_object_assert_init+0x2a9/0x370 [ 4349.912596][T19434] lock_acquire.part.0+0xeb/0x330 [ 4349.912741][T19434] ? blocking_notifier_call_chain+0x50/0x90 [ 4349.912926][T19434] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4349.913077][T19434] ? trace_lock_acquire+0x14c/0x1f0 [ 4349.913225][T19434] ? lock_acquire+0x32/0xc0 [ 4349.913369][T19434] ? blocking_notifier_call_chain+0x50/0x90 [ 4349.913550][T19434] down_read+0x9f/0x340 [ 4349.913667][T19434] ? blocking_notifier_call_chain+0x50/0x90 [ 4349.913846][T19434] ? __pfx_down_read+0x10/0x10 [ 4349.913993][T19434] blocking_notifier_call_chain+0x50/0x90 [ 4349.914140][T19434] __dev_close_many+0xdf/0x2d0 [ 4349.914285][T19434] ? __pfx___dev_close_many+0x10/0x10 [ 4349.914432][T19434] dev_close_many+0x202/0x650 [ 4349.914575][T19434] ? __pfx_dev_close_many+0x10/0x10 [ 4349.914724][T19434] ? ipv6_mc_down+0x1d8/0x3a0 [ 4349.914872][T19434] vlan_device_event+0x143b/0x2130 [ 4349.915019][T19434] ? __pfx_vlan_device_event+0x10/0x10 [ 4349.915162][T19434] ? __pfx_br_device_event+0x10/0x10 [ 4349.915308][T19434] ? packet_notifier+0x3b0/0x810 [ 4349.915454][T19434] notifier_call_chain+0xcd/0x150 [ 4349.915598][T19434] blocking_notifier_call_chain+0x66/0x90 [ 4349.915746][T19434] dev_close_many+0x2d8/0x650 [ 4349.915895][T19434] ? find_held_lock+0x2c/0x110 [ 4349.916047][T19434] ? __pfx_dev_close_many+0x10/0x10 [ 4349.916190][T19434] ? __lock_release+0x103/0x460 [ 4349.916333][T19434] ? __pfx___lock_release+0x10/0x10 [ 4349.916479][T19434] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4349.916626][T19434] unregister_netdevice_many_notify+0x8ed/0x1580 [ 4349.916809][T19434] ? hlock_class+0x4e/0x130 [ 4349.916952][T19434] ? mark_lock+0x38/0x3e0 [ 4349.917063][T19434] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 4349.917242][T19434] ? __pfx_kernfs_free_rcu+0x10/0x10 [ 4349.917405][T19434] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 4349.917585][T19434] ? mutex_is_locked+0x1c/0x60 [ 4349.917730][T19434] ? rtnl_is_locked+0x15/0x20 [ 4349.917879][T19434] ? unregister_netdevice_queue+0x70/0x410 [ 4349.918056][T19434] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 4349.918237][T19434] ? br_dev_delete+0x10d/0x190 [ 4349.918383][T19434] rtnl_dellink+0x348/0xa40 [ 4349.918527][T19434] ? __pfx_rtnl_dellink+0x10/0x10 [ 4349.918684][T19434] ? find_held_lock+0x2c/0x110 [ 4349.918829][T19434] ? __lock_release+0x103/0x460 [ 4349.918971][T19434] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 4349.919120][T19434] ? __pfx___lock_release+0x10/0x10 [ 4349.919263][T19434] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4349.919411][T19434] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 4349.919556][T19434] ? __pfx_rtnl_dellink+0x10/0x10 [ 4349.919700][T19434] rtnetlink_rcv_msg+0x712/0xc10 [ 4349.919845][T19434] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 4349.919993][T19434] ? hlock_class+0x4e/0x130 [ 4349.920138][T19434] ? mark_lock+0x38/0x3e0 [ 4349.920248][T19434] ? __lock_acquire+0xb9a/0x1680 [ 4349.920393][T19434] netlink_rcv_skb+0x130/0x360 [ 4349.920539][T19434] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 4349.920685][T19434] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 4349.920837][T19434] ? netlink_deliver_tap+0x13e/0x340 [ 4349.920989][T19434] ? netlink_deliver_tap+0xc3/0x340 [ 4349.921138][T19434] netlink_unicast+0x44b/0x710 [ 4349.921285][T19434] ? __pfx_netlink_unicast+0x10/0x10 [ 4349.921429][T19434] ? find_held_lock+0x2c/0x110 [ 4349.921573][T19434] netlink_sendmsg+0x723/0xbe0 [ 4349.921720][T19434] ? __pfx_netlink_sendmsg+0x10/0x10 [ 4349.921867][T19434] ____sys_sendmsg+0x7ac/0xa10 [ 4349.922012][T19434] ? __pfx_____sys_sendmsg+0x10/0x10 [ 4349.922159][T19434] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 4349.922344][T19434] ___sys_sendmsg+0xee/0x170 [ 4349.922490][T19434] ? __pfx____sys_sendmsg+0x10/0x10 [ 4349.922636][T19434] ? kasan_save_stack+0x34/0x50 [ 4349.922782][T19434] ? kasan_save_stack+0x24/0x50 [ 4349.922928][T19434] ? __kasan_record_aux_stack+0x8e/0xa0 [ 4349.923073][T19434] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 4349.923255][T19434] ? __x64_sys_close+0x7c/0xd0 [ 4349.923399][T19434] ? do_syscall_64+0xc1/0x1d0 [ 4349.923546][T19434] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4349.923724][T19434] ? __lock_acquire+0xb9a/0x1680 [ 4349.923870][T19434] ? find_held_lock+0x2c/0x110 [ 4349.924101][T19434] ? __lock_release+0x103/0x460 [ 4349.924247][T19434] ? __virt_addr_valid+0x22b/0x430 [ 4349.924396][T19434] ? __pfx___lock_release+0x10/0x10 [ 4349.924539][T19434] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4349.924769][T19434] __sys_sendmsg+0x109/0x1a0 [ 4349.924913][T19434] ? __pfx___sys_sendmsg+0x10/0x10 [ 4349.925057][T19434] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 4349.925241][T19434] do_syscall_64+0xc1/0x1d0 [ 4349.925469][T19434] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 4349.925650][T19434] RIP: 0033:0x7f87ef9ea9a7 [ 4349.925800][T19434] 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 [ 4349.926412][T19434] RSP: 002b:00007ffc0d906698 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 4349.926630][T19434] RAX: ffffffffffffffda RBX: 00007ffc0d906dc0 RCX: 00007f87ef9ea9a7 [ 4349.926937][T19434] RDX: 0000000000000000 RSI: 00007ffc0d906700 RDI: 0000000000000005 [ 4349.927154][T19434] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 4349.927454][T19434] R10: 00007f87ef8a8ef8 R11: 0000000000000246 R12: 0000000000000001 [ 4349.927667][T19434] R13: 0000000067793724 R14: 0000000000498600 R15: 0000000000000000 [ 4349.927888][T19434] [ 4350.024728][T19434] ip (19434) used greatest stack depth: 23152 bytes left [ 4355.151210][T19512] eth1: renamed from tmp [ 4355.416163][T19516] eth2: renamed from tmp [ 4375.004412][T19659] eth1: renamed from tmp