[ 10.439281][ T249] ip (249) used greatest stack depth: 24056 bytes left [ 10.786791][ T259] ip (259) used greatest stack depth: 23616 bytes left [ 14.633065][ T320] br1: port 1(veth1) entered blocking state [ 14.633814][ T320] br1: port 1(veth1) entered disabled state [ 14.634221][ T320] veth1: entered allmulticast mode [ 14.636454][ T320] veth1: entered promiscuous mode [ 14.725516][ T40] br1: port 1(veth1) entered blocking state [ 14.725947][ T40] br1: port 1(veth1) entered forwarding state [ 14.802957][ T323] br1: port 2(veth2) entered blocking state [ 14.803256][ T323] br1: port 2(veth2) entered disabled state [ 14.804508][ T323] veth2: entered allmulticast mode [ 14.806405][ T323] veth2: entered promiscuous mode [ 14.897114][ T37] br1: port 2(veth2) entered blocking state [ 14.897451][ T37] br1: port 2(veth2) entered forwarding state [ 15.177278][ T327] 8021q: 802.1Q VLAN Support v1.8 [ 16.002597][ T337] GACT probability NOT on [ 23.312620][ T376] Mirror/redirect action on [ 58.189588][ T556] [ 58.189790][ T556] ============================================ [ 58.190005][ T556] WARNING: possible recursive locking detected [ 58.190191][ T556] 6.13.0-rc5-virtme #1 Not tainted [ 58.190347][ T556] -------------------------------------------- [ 58.190540][ T556] ip/556 is trying to acquire lock: [ 58.190691][ T556] ffffffffa81d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 58.191006][ T556] [ 58.191006][ T556] but task is already holding lock: [ 58.191222][ T556] ffffffffa81d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 58.191526][ T556] [ 58.191526][ T556] other info that might help us debug this: [ 58.191739][ T556] Possible unsafe locking scenario: [ 58.191739][ T556] [ 58.191955][ T556] CPU0 [ 58.192064][ T556] ---- [ 58.192175][ T556] lock((netdev_chain).rwsem); [ 58.192322][ T556] lock((netdev_chain).rwsem); [ 58.192471][ T556] [ 58.192471][ T556] *** DEADLOCK *** [ 58.192471][ T556] [ 58.192687][ T556] May be due to missing lock nesting notation [ 58.192687][ T556] [ 58.192904][ T556] 2 locks held by ip/556: [ 58.193015][ T556] #0: ffffffffa81e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 58.193285][ T556] #1: ffffffffa81d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 58.193587][ T556] [ 58.193587][ T556] stack backtrace: [ 58.193771][ T556] CPU: 2 UID: 0 PID: 556 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 58.193992][ T556] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 58.194176][ T556] Call Trace: [ 58.194290][ T556] [ 58.194368][ T556] dump_stack_lvl+0x82/0xd0 [ 58.194528][ T556] print_deadlock_bug+0x40a/0x650 [ 58.194677][ T556] validate_chain+0x5bf/0xae0 [ 58.194826][ T556] ? __pfx_validate_chain+0x10/0x10 [ 58.194978][ T556] ? hlock_class+0x4e/0x130 [ 58.195127][ T556] ? mark_lock+0x38/0x3e0 [ 58.195240][ T556] __lock_acquire+0xb9a/0x1680 [ 58.195392][ T556] lock_acquire.part.0+0xeb/0x330 [ 58.195538][ T556] ? blocking_notifier_call_chain+0x50/0x90 [ 58.195729][ T556] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 58.195915][ T556] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 58.196064][ T556] ? trace_lock_acquire+0x14c/0x1f0 [ 58.196214][ T556] ? lock_acquire+0x32/0xc0 [ 58.196363][ T556] ? blocking_notifier_call_chain+0x50/0x90 [ 58.196548][ T556] down_read+0x9f/0x340 [ 58.196660][ T556] ? blocking_notifier_call_chain+0x50/0x90 [ 58.196848][ T556] ? __pfx_down_read+0x10/0x10 [ 58.196995][ T556] ? __lock_release+0x103/0x460 [ 58.197143][ T556] ? netconsole_netdev_event+0x2c1/0x620 [ 58.197293][ T556] ? __pfx___lock_release+0x10/0x10 [ 58.197444][ T556] blocking_notifier_call_chain+0x50/0x90 [ 58.197592][ T556] __netdev_upper_dev_unlink+0xd9/0x220 [ 58.197744][ T556] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 58.197928][ T556] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 58.198077][ T556] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 58.198262][ T556] ? rtnl_is_locked+0x15/0x20 [ 58.198413][ T556] netdev_upper_dev_unlink+0x71/0xa0 [ 58.198560][ T556] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 58.198744][ T556] ? netconsole_netdev_event+0x2c1/0x620 [ 58.198898][ T556] ? mutex_is_locked+0x1c/0x60 [ 58.199047][ T556] ? rtnl_is_locked+0x15/0x20 [ 58.199195][ T556] ? netdev_master_upper_dev_get+0x13/0x120 [ 58.199381][ T556] vrf_device_event+0x78/0xe0 [vrf] [ 58.199533][ T556] notifier_call_chain+0xcd/0x150 [ 58.199682][ T556] blocking_notifier_call_chain+0x66/0x90 [ 58.199841][ T556] unregister_netdevice_many_notify+0xa7b/0x1580 [ 58.200036][ T556] ? __lock_release+0x103/0x460 [ 58.200183][ T556] ? __pfx___lock_release+0x10/0x10 [ 58.200331][ T556] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 58.200516][ T556] ? hlock_class+0x4e/0x130 [ 58.200664][ T556] ? mark_held_locks+0x9e/0xe0 [ 58.200812][ T556] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 58.200961][ T556] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 58.201153][ T556] rtnl_dellink+0x348/0xa40 [ 58.201302][ T556] ? __pfx_rtnl_dellink+0x10/0x10 [ 58.201465][ T556] ? find_held_lock+0x2c/0x110 [ 58.201616][ T556] ? __lock_release+0x103/0x460 [ 58.201763][ T556] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 58.201911][ T556] ? __pfx___lock_release+0x10/0x10 [ 58.202060][ T556] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 58.202216][ T556] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 58.202364][ T556] ? __pfx_rtnl_dellink+0x10/0x10 [ 58.202512][ T556] rtnetlink_rcv_msg+0x712/0xc10 [ 58.202662][ T556] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 58.202809][ T556] ? hlock_class+0x4e/0x130 [ 58.202954][ T556] ? mark_lock+0x38/0x3e0 [ 58.203067][ T556] ? __lock_acquire+0xb9a/0x1680 [ 58.203221][ T556] netlink_rcv_skb+0x130/0x360 [ 58.203370][ T556] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 58.203521][ T556] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 58.203673][ T556] ? netlink_deliver_tap+0x13e/0x340 [ 58.203824][ T556] ? netlink_deliver_tap+0xc3/0x340 [ 58.203973][ T556] netlink_unicast+0x44b/0x710 [ 58.204122][ T556] ? __pfx_netlink_unicast+0x10/0x10 [ 58.204275][ T556] ? find_held_lock+0x2c/0x110 [ 58.204425][ T556] netlink_sendmsg+0x723/0xbe0 [ 58.204574][ T556] ? __pfx_netlink_sendmsg+0x10/0x10 [ 58.204725][ T556] ____sys_sendmsg+0x7ac/0xa10 [ 58.204873][ T556] ? __pfx_____sys_sendmsg+0x10/0x10 [ 58.205020][ T556] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 58.205209][ T556] ___sys_sendmsg+0xee/0x170 [ 58.205363][ T556] ? __pfx____sys_sendmsg+0x10/0x10 [ 58.205512][ T556] ? kasan_save_stack+0x34/0x50 [ 58.205661][ T556] ? kasan_save_stack+0x24/0x50 [ 58.205808][ T556] ? __kasan_record_aux_stack+0x8e/0xa0 [ 58.205956][ T556] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 58.206139][ T556] ? __x64_sys_close+0x7c/0xd0 [ 58.206288][ T556] ? do_syscall_64+0xc1/0x1d0 [ 58.206436][ T556] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 58.206625][ T556] ? __lock_acquire+0xb9a/0x1680 [ 58.206774][ T556] ? find_held_lock+0x2c/0x110 [ 58.206922][ T556] ? __lock_release+0x103/0x460 [ 58.207070][ T556] ? __virt_addr_valid+0x22b/0x430 [ 58.207219][ T556] ? __pfx___lock_release+0x10/0x10 [ 58.207366][ T556] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 58.207516][ T556] __sys_sendmsg+0x109/0x1a0 [ 58.207670][ T556] ? __pfx___sys_sendmsg+0x10/0x10 [ 58.207817][ T556] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 58.208008][ T556] do_syscall_64+0xc1/0x1d0 [ 58.208156][ T556] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 58.208338][ T556] RIP: 0033:0x7fd6a94b99a7 [ 58.208493][ T556] 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 [ 58.209013][ T556] RSP: 002b:00007ffd5b896e58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 58.209235][ T556] RAX: ffffffffffffffda RBX: 00007ffd5b897580 RCX: 00007fd6a94b99a7 [ 58.209458][ T556] RDX: 0000000000000000 RSI: 00007ffd5b896ec0 RDI: 0000000000000005 [ 58.209682][ T556] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 58.209925][ T556] R10: 00007fd6a9377ef8 R11: 0000000000000246 R12: 0000000000000002 [ 58.210147][ T556] R13: 0000000067792e43 R14: 0000000000498600 R15: 0000000000000000 [ 58.210371][ T556] [ 58.686465][ T563] br1: port 1(veth1) entered disabled state [ 58.738789][ T564] br1: port 2(veth2) entered disabled state [ 58.798787][ T565] veth2: left allmulticast mode [ 58.799047][ T565] veth2: left promiscuous mode [ 58.800781][ T565] br1: port 2(veth2) entered disabled state [ 58.802179][ T565] veth1: left allmulticast mode [ 58.802356][ T565] veth1: left promiscuous mode [ 58.803586][ T565] br1: port 1(veth1) entered disabled state