[ 11.339950][ T248] ip (248) used greatest stack depth: 23248 bytes left [ 14.276646][ T300] 8021q: 802.1Q VLAN Support v1.8 [ 17.606779][ T345] br1: port 1(vx100) entered blocking state [ 17.608273][ T345] br1: port 1(vx100) entered disabled state [ 17.609052][ T345] vx100: entered allmulticast mode [ 17.612668][ T345] vx100: entered promiscuous mode [ 17.614288][ T345] br1: port 1(vx100) entered blocking state [ 17.614907][ T345] br1: port 1(vx100) entered forwarding state [ 17.842015][ T347] br1: port 2(veth1) entered blocking state [ 17.842510][ T347] br1: port 2(veth1) entered disabled state [ 17.842973][ T347] veth1: entered allmulticast mode [ 17.846600][ T347] veth1: entered promiscuous mode [ 17.957821][ T45] br1: port 2(veth1) entered blocking state [ 17.958286][ T45] br1: port 2(veth1) entered forwarding state [ 18.134684][ T350] br1: port 3(veth2) entered blocking state [ 18.135001][ T350] br1: port 3(veth2) entered disabled state [ 18.135292][ T350] veth2: entered allmulticast mode [ 18.137331][ T350] veth2: entered promiscuous mode [ 18.230558][ T37] br1: port 3(veth2) entered blocking state [ 18.231504][ T37] br1: port 3(veth2) entered forwarding state [ 21.614356][ T396] br2: port 1(w1) entered blocking state [ 21.614739][ T396] br2: port 1(w1) entered disabled state [ 21.615117][ T396] w1: entered allmulticast mode [ 21.618990][ T396] w1: entered promiscuous mode [ 22.198223][ T403] br2: port 2(vx100) entered blocking state [ 22.199508][ T403] br2: port 2(vx100) entered disabled state [ 22.199791][ T403] vx100: entered allmulticast mode [ 22.201738][ T403] vx100: entered promiscuous mode [ 22.202241][ T403] br2: port 2(vx100) entered blocking state [ 22.202492][ T403] br2: port 2(vx100) entered forwarding state [ 22.894852][ T37] br2: port 1(w1) entered blocking state [ 22.895315][ T37] br2: port 1(w1) entered forwarding state [ 25.173713][ T444] br2: port 1(w1) entered blocking state [ 25.174006][ T444] br2: port 1(w1) entered disabled state [ 25.174276][ T444] w1: entered allmulticast mode [ 25.176264][ T444] w1: entered promiscuous mode [ 25.802873][ T451] br2: port 2(vx100) entered blocking state [ 25.803326][ T451] br2: port 2(vx100) entered disabled state [ 25.803870][ T451] vx100: entered allmulticast mode [ 25.806024][ T451] vx100: entered promiscuous mode [ 25.806656][ T451] br2: port 2(vx100) entered blocking state [ 25.806974][ T451] br2: port 2(vx100) entered forwarding state [ 26.527670][ T40] br2: port 1(w1) entered blocking state [ 26.527995][ T40] br2: port 1(w1) entered forwarding state [ 38.735357][ T11] vx100: left allmulticast mode [ 38.735768][ T11] vx100: left promiscuous mode [ 38.736277][ T11] br2: port 2(vx100) entered disabled state [ 38.740173][ T11] w1: left allmulticast mode [ 38.740505][ T11] w1: left promiscuous mode [ 38.740891][ T11] br2: port 1(w1) entered disabled state [ 39.270154][ T11] vx100: left allmulticast mode [ 39.270376][ T11] vx100: left promiscuous mode [ 39.270712][ T11] br2: port 2(vx100) entered disabled state [ 39.273696][ T11] w1: left allmulticast mode [ 39.274097][ T11] w1: left promiscuous mode [ 39.274414][ T11] br2: port 1(w1) entered disabled state [ 41.443465][ T574] br1: port 3(veth2) entered disabled state [ 41.515851][ T576] veth2: left allmulticast mode [ 41.516126][ T576] veth2: left promiscuous mode [ 41.516653][ T576] br1: port 3(veth2) entered disabled state [ 41.676927][ T578] br1: port 2(veth1) entered disabled state [ 41.751706][ T579] veth1: left allmulticast mode [ 41.751939][ T579] veth1: left promiscuous mode [ 41.752256][ T579] br1: port 2(veth1) entered disabled state [ 41.839217][ T580] vx100: left allmulticast mode [ 41.839478][ T580] vx100: left promiscuous mode [ 41.839801][ T580] br1: port 1(vx100) entered disabled state [ 42.687305][ T589] [ 42.687519][ T589] ============================================ [ 42.687711][ T589] WARNING: possible recursive locking detected [ 42.687894][ T589] 6.13.0-rc5-virtme #1 Not tainted [ 42.688040][ T589] -------------------------------------------- [ 42.688221][ T589] ip/589 is trying to acquire lock: [ 42.688371][ T589] ffffffffb49d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 42.688686][ T589] [ 42.688686][ T589] but task is already holding lock: [ 42.688905][ T589] ffffffffb49d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 42.689203][ T589] [ 42.689203][ T589] other info that might help us debug this: [ 42.689431][ T589] Possible unsafe locking scenario: [ 42.689431][ T589] [ 42.689652][ T589] CPU0 [ 42.689762][ T589] ---- [ 42.689872][ T589] lock((netdev_chain).rwsem); [ 42.690018][ T589] lock((netdev_chain).rwsem); [ 42.690167][ T589] [ 42.690167][ T589] *** DEADLOCK *** [ 42.690167][ T589] [ 42.690381][ T589] May be due to missing lock nesting notation [ 42.690381][ T589] [ 42.690595][ T589] 2 locks held by ip/589: [ 42.690714][ T589] #0: ffffffffb49e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 42.690983][ T589] #1: ffffffffb49d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 42.691290][ T589] [ 42.691290][ T589] stack backtrace: [ 42.691475][ T589] CPU: 0 UID: 0 PID: 589 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 42.691697][ T589] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 42.691880][ T589] Call Trace: [ 42.691997][ T589] [ 42.692082][ T589] dump_stack_lvl+0x82/0xd0 [ 42.692240][ T589] print_deadlock_bug+0x40a/0x650 [ 42.692390][ T589] validate_chain+0x5bf/0xae0 [ 42.692538][ T589] ? __pfx_validate_chain+0x10/0x10 [ 42.692689][ T589] ? hlock_class+0x4e/0x130 [ 42.692835][ T589] ? mark_lock+0x38/0x3e0 [ 42.692948][ T589] __lock_acquire+0xb9a/0x1680 [ 42.693095][ T589] lock_acquire.part.0+0xeb/0x330 [ 42.693246][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 42.693427][ T589] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 42.693626][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 42.693782][ T589] ? trace_lock_acquire+0x14c/0x1f0 [ 42.693930][ T589] ? lock_acquire+0x32/0xc0 [ 42.694076][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 42.694257][ T589] down_read+0x9f/0x340 [ 42.694374][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 42.694559][ T589] ? __pfx_down_read+0x10/0x10 [ 42.694705][ T589] ? __lock_release+0x103/0x460 [ 42.694851][ T589] ? netconsole_netdev_event+0x2c1/0x620 [ 42.694996][ T589] ? __pfx___lock_release+0x10/0x10 [ 42.695144][ T589] blocking_notifier_call_chain+0x50/0x90 [ 42.695289][ T589] __netdev_upper_dev_unlink+0xd9/0x220 [ 42.695439][ T589] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 42.695644][ T589] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 42.695789][ T589] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 42.695970][ T589] ? rtnl_is_locked+0x15/0x20 [ 42.696117][ T589] netdev_upper_dev_unlink+0x71/0xa0 [ 42.696280][ T589] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 42.696464][ T589] ? netconsole_netdev_event+0x2c1/0x620 [ 42.696610][ T589] ? mutex_is_locked+0x1c/0x60 [ 42.696757][ T589] ? rtnl_is_locked+0x15/0x20 [ 42.696904][ T589] ? netdev_master_upper_dev_get+0x13/0x120 [ 42.697086][ T589] vrf_device_event+0x78/0xe0 [vrf] [ 42.697235][ T589] notifier_call_chain+0xcd/0x150 [ 42.697382][ T589] blocking_notifier_call_chain+0x66/0x90 [ 42.697533][ T589] unregister_netdevice_many_notify+0xa7b/0x1580 [ 42.697716][ T589] ? hlock_class+0x4e/0x130 [ 42.697860][ T589] ? mark_lock+0x38/0x3e0 [ 42.697973][ T589] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 42.698154][ T589] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 42.698336][ T589] ? kfree+0xf3/0x330 [ 42.698448][ T589] ? vlan_vid_del+0x310/0x5e0 [ 42.698604][ T589] ? vlan_vid_del+0x310/0x5e0 [ 42.698752][ T589] rtnl_dellink+0x348/0xa40 [ 42.698898][ T589] ? __pfx_rtnl_dellink+0x10/0x10 [ 42.699058][ T589] ? find_held_lock+0x2c/0x110 [ 42.699208][ T589] ? __lock_release+0x103/0x460 [ 42.699352][ T589] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 42.699498][ T589] ? __pfx___lock_release+0x10/0x10 [ 42.699644][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 42.699798][ T589] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 42.699943][ T589] ? __pfx_rtnl_dellink+0x10/0x10 [ 42.700089][ T589] rtnetlink_rcv_msg+0x712/0xc10 [ 42.700233][ T589] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 42.700380][ T589] ? hlock_class+0x4e/0x130 [ 42.700524][ T589] ? mark_lock+0x38/0x3e0 [ 42.700635][ T589] ? __lock_acquire+0xb9a/0x1680 [ 42.700787][ T589] netlink_rcv_skb+0x130/0x360 [ 42.700932][ T589] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 42.701077][ T589] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 42.701227][ T589] ? netlink_deliver_tap+0x13e/0x340 [ 42.701376][ T589] ? netlink_deliver_tap+0xc3/0x340 [ 42.701524][ T589] netlink_unicast+0x44b/0x710 [ 42.701673][ T589] ? __pfx_netlink_unicast+0x10/0x10 [ 42.701822][ T589] ? find_held_lock+0x2c/0x110 [ 42.701971][ T589] netlink_sendmsg+0x723/0xbe0 [ 42.702117][ T589] ? __pfx_netlink_sendmsg+0x10/0x10 [ 42.702268][ T589] ____sys_sendmsg+0x7ac/0xa10 [ 42.702416][ T589] ? __pfx_____sys_sendmsg+0x10/0x10 [ 42.702562][ T589] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 42.702747][ T589] ___sys_sendmsg+0xee/0x170 [ 42.702901][ T589] ? __pfx____sys_sendmsg+0x10/0x10 [ 42.703050][ T589] ? kasan_save_stack+0x34/0x50 [ 42.703196][ T589] ? kasan_save_stack+0x24/0x50 [ 42.703342][ T589] ? __kasan_record_aux_stack+0x8e/0xa0 [ 42.703491][ T589] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 42.703684][ T589] ? __x64_sys_close+0x7c/0xd0 [ 42.703830][ T589] ? do_syscall_64+0xc1/0x1d0 [ 42.703984][ T589] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 42.704170][ T589] ? __lock_acquire+0xb9a/0x1680 [ 42.704318][ T589] ? find_held_lock+0x2c/0x110 [ 42.704464][ T589] ? __lock_release+0x103/0x460 [ 42.704610][ T589] ? __virt_addr_valid+0x22b/0x430 [ 42.704759][ T589] ? __pfx___lock_release+0x10/0x10 [ 42.704906][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 42.705056][ T589] __sys_sendmsg+0x109/0x1a0 [ 42.705205][ T589] ? __pfx___sys_sendmsg+0x10/0x10 [ 42.705352][ T589] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 42.705538][ T589] do_syscall_64+0xc1/0x1d0 [ 42.705684][ T589] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 42.705867][ T589] RIP: 0033:0x7f37f7c339a7 [ 42.706025][ T589] 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 [ 42.706542][ T589] RSP: 002b:00007ffcd5629ce8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 42.706763][ T589] RAX: ffffffffffffffda RBX: 00007ffcd562a410 RCX: 00007f37f7c339a7 [ 42.706984][ T589] RDX: 0000000000000000 RSI: 00007ffcd5629d50 RDI: 0000000000000005 [ 42.707209][ T589] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 42.707430][ T589] R10: 00007f37f7af1ef8 R11: 0000000000000246 R12: 0000000000000002 [ 42.707651][ T589] R13: 00000000677957d4 R14: 0000000000498600 R15: 0000000000000000 [ 42.707874][ T589]