[ 12.100764][ T249] modprobe (249) used greatest stack depth: 23976 bytes left [ 15.024752][ T304] 8021q: 802.1Q VLAN Support v1.8 [ 20.652122][ T434] br10: port 1(veth1.10) entered blocking state [ 20.652574][ T434] br10: port 1(veth1.10) entered disabled state [ 20.652937][ T434] veth1.10: entered allmulticast mode [ 20.653138][ T434] veth1: entered allmulticast mode [ 20.662313][ T434] veth1.10: entered promiscuous mode [ 20.662556][ T434] veth1: entered promiscuous mode [ 20.783748][ T439] br10: port 2(veth2.10) entered blocking state [ 20.784229][ T439] br10: port 2(veth2.10) entered disabled state [ 20.784720][ T439] veth2.10: entered allmulticast mode [ 20.785018][ T439] veth2: entered allmulticast mode [ 20.787160][ T439] veth2.10: entered promiscuous mode [ 20.787417][ T439] veth2: entered promiscuous mode [ 20.925064][ T444] br10: port 2(veth2.10) entered blocking state [ 20.925728][ T444] br10: port 2(veth2.10) entered forwarding state [ 20.926549][ T444] br10: port 1(veth1.10) entered blocking state [ 20.926834][ T444] br10: port 1(veth1.10) entered forwarding state [ 22.059029][ T479] br11: port 1(veth1.11) entered blocking state [ 22.059341][ T479] br11: port 1(veth1.11) entered disabled state [ 22.059660][ T479] veth1.11: entered allmulticast mode [ 22.062070][ T479] veth1.11: entered promiscuous mode [ 22.221164][ T485] br11: port 2(veth2.11) entered blocking state [ 22.221666][ T485] br11: port 2(veth2.11) entered disabled state [ 22.222128][ T485] veth2.11: entered allmulticast mode [ 22.225999][ T485] veth2.11: entered promiscuous mode [ 22.373070][ T490] br11: port 2(veth2.11) entered blocking state [ 22.373507][ T490] br11: port 2(veth2.11) entered forwarding state [ 22.374103][ T490] br11: port 1(veth1.11) entered blocking state [ 22.374376][ T490] br11: port 1(veth1.11) entered forwarding state [ 23.561351][ T526] br12: port 1(veth1.12) entered blocking state [ 23.561832][ T526] br12: port 1(veth1.12) entered disabled state [ 23.562287][ T526] veth1.12: entered allmulticast mode [ 23.565488][ T526] veth1.12: entered promiscuous mode [ 23.720963][ T531] br12: port 2(veth2.12) entered blocking state [ 23.721252][ T531] br12: port 2(veth2.12) entered disabled state [ 23.721538][ T531] veth2.12: entered allmulticast mode [ 23.723454][ T531] veth2.12: entered promiscuous mode [ 23.851394][ T536] br12: port 2(veth2.12) entered blocking state [ 23.851752][ T536] br12: port 2(veth2.12) entered forwarding state [ 23.852215][ T536] br12: port 1(veth1.12) entered blocking state [ 23.852492][ T536] br12: port 1(veth1.12) entered forwarding state [ 440.767336][ T1969] br12: port 2(veth2.12) entered disabled state [ 440.890671][ T1971] br12: port 1(veth1.12) entered disabled state [ 441.169073][ T1975] veth2.12: left allmulticast mode [ 441.169339][ T1975] veth2.12: left promiscuous mode [ 441.169714][ T1975] br12: port 2(veth2.12) entered disabled state [ 441.277723][ T1977] veth1.12: left allmulticast mode [ 441.277981][ T1977] veth1.12: left promiscuous mode [ 441.278322][ T1977] br12: port 1(veth1.12) entered disabled state [ 441.975530][ T1987] br11: port 2(veth2.11) entered disabled state [ 442.094680][ T1989] br11: port 1(veth1.11) entered disabled state [ 442.346464][ T1993] veth2.11: left allmulticast mode [ 442.346762][ T1993] veth2.11: left promiscuous mode [ 442.347133][ T1993] br11: port 2(veth2.11) entered disabled state [ 442.461930][ T1995] veth1.11: left allmulticast mode [ 442.462243][ T1995] veth1.11: left promiscuous mode [ 442.462637][ T1995] br11: port 1(veth1.11) entered disabled state [ 443.098630][ T2003] veth2: left allmulticast mode [ 443.098913][ T2003] veth2: left promiscuous mode [ 443.100836][ T2003] br10: port 2(veth2.10) entered disabled state [ 443.109918][ T2003] ip (2003) used greatest stack depth: 23416 bytes left [ 443.211792][ T2005] veth1: left allmulticast mode [ 443.212650][ T2005] veth1: left promiscuous mode [ 443.215359][ T2005] br10: port 1(veth1.10) entered disabled state [ 443.455650][ T2009] veth2.10: left allmulticast mode [ 443.455924][ T2009] veth2.10: left promiscuous mode [ 443.456324][ T2009] br10: port 2(veth2.10) entered disabled state [ 443.584729][ T2011] veth1.10: left allmulticast mode [ 443.585032][ T2011] veth1.10: left promiscuous mode [ 443.585421][ T2011] br10: port 1(veth1.10) entered disabled state [ 444.659322][ T2027] [ 444.659516][ T2027] ============================================ [ 444.659737][ T2027] WARNING: possible recursive locking detected [ 444.659953][ T2027] 6.13.0-rc5-virtme #1 Not tainted [ 444.660147][ T2027] -------------------------------------------- [ 444.660343][ T2027] ip/2027 is trying to acquire lock: [ 444.660544][ T2027] ffffffff93fd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 444.660910][ T2027] [ 444.660910][ T2027] but task is already holding lock: [ 444.661165][ T2027] ffffffff93fd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 444.661509][ T2027] [ 444.661509][ T2027] other info that might help us debug this: [ 444.661737][ T2027] Possible unsafe locking scenario: [ 444.661737][ T2027] [ 444.661961][ T2027] CPU0 [ 444.662082][ T2027] ---- [ 444.662202][ T2027] lock((netdev_chain).rwsem); [ 444.662362][ T2027] lock((netdev_chain).rwsem); [ 444.662534][ T2027] [ 444.662534][ T2027] *** DEADLOCK *** [ 444.662534][ T2027] [ 444.662819][ T2027] May be due to missing lock nesting notation [ 444.662819][ T2027] [ 444.663036][ T2027] 2 locks held by ip/2027: [ 444.663186][ T2027] #0: ffffffff93fe7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 444.663475][ T2027] #1: ffffffff93fd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 444.663814][ T2027] [ 444.663814][ T2027] stack backtrace: [ 444.663997][ T2027] CPU: 3 UID: 0 PID: 2027 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 444.664221][ T2027] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 444.664412][ T2027] Call Trace: [ 444.664550][ T2027] [ 444.664636][ T2027] dump_stack_lvl+0x82/0xd0 [ 444.664822][ T2027] print_deadlock_bug+0x40a/0x650 [ 444.664998][ T2027] validate_chain+0x5bf/0xae0 [ 444.665154][ T2027] ? __pfx_validate_chain+0x10/0x10 [ 444.665334][ T2027] ? hlock_class+0x4e/0x130 [ 444.665511][ T2027] ? mark_lock+0x38/0x3e0 [ 444.665638][ T2027] __lock_acquire+0xb9a/0x1680 [ 444.665805][ T2027] lock_acquire.part.0+0xeb/0x330 [ 444.665958][ T2027] ? blocking_notifier_call_chain+0x50/0x90 [ 444.666158][ T2027] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 444.666365][ T2027] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 444.666542][ T2027] ? trace_lock_acquire+0x14c/0x1f0 [ 444.666713][ T2027] ? lock_acquire+0x32/0xc0 [ 444.666867][ T2027] ? blocking_notifier_call_chain+0x50/0x90 [ 444.667068][ T2027] down_read+0x9f/0x340 [ 444.667181][ T2027] ? blocking_notifier_call_chain+0x50/0x90 [ 444.667366][ T2027] ? __pfx_down_read+0x10/0x10 [ 444.667527][ T2027] ? __lock_release+0x103/0x460 [ 444.667674][ T2027] ? netconsole_netdev_event+0x2c1/0x620 [ 444.667825][ T2027] ? __pfx___lock_release+0x10/0x10 [ 444.667973][ T2027] blocking_notifier_call_chain+0x50/0x90 [ 444.668130][ T2027] __netdev_upper_dev_unlink+0xd9/0x220 [ 444.668283][ T2027] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 444.668473][ T2027] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 444.668636][ T2027] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 444.668822][ T2027] ? rtnl_is_locked+0x15/0x20 [ 444.668972][ T2027] netdev_upper_dev_unlink+0x71/0xa0 [ 444.669126][ T2027] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 444.669312][ T2027] ? netconsole_netdev_event+0x2c1/0x620 [ 444.669466][ T2027] ? mutex_is_locked+0x1c/0x60 [ 444.669637][ T2027] ? rtnl_is_locked+0x15/0x20 [ 444.669792][ T2027] ? netdev_master_upper_dev_get+0x13/0x120 [ 444.669977][ T2027] vrf_device_event+0x78/0xe0 [vrf] [ 444.670130][ T2027] notifier_call_chain+0xcd/0x150 [ 444.670285][ T2027] blocking_notifier_call_chain+0x66/0x90 [ 444.670434][ T2027] unregister_netdevice_many_notify+0xa7b/0x1580 [ 444.670627][ T2027] ? hlock_class+0x4e/0x130 [ 444.670787][ T2027] ? mark_lock+0x38/0x3e0 [ 444.670901][ T2027] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 444.671099][ T2027] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 444.671285][ T2027] ? kfree+0xf3/0x330 [ 444.671405][ T2027] ? vlan_vid_del+0x310/0x5e0 [ 444.671587][ T2027] ? vlan_vid_del+0x310/0x5e0 [ 444.671738][ T2027] rtnl_dellink+0x348/0xa40 [ 444.671890][ T2027] ? __pfx_rtnl_dellink+0x10/0x10 [ 444.672067][ T2027] ? find_held_lock+0x2c/0x110 [ 444.672222][ T2027] ? __lock_release+0x103/0x460 [ 444.672383][ T2027] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 444.672593][ T2027] ? __pfx___lock_release+0x10/0x10 [ 444.672801][ T2027] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 444.672956][ T2027] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 444.673136][ T2027] ? __pfx_rtnl_dellink+0x10/0x10 [ 444.673290][ T2027] rtnetlink_rcv_msg+0x712/0xc10 [ 444.673436][ T2027] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 444.673595][ T2027] ? hlock_class+0x4e/0x130 [ 444.673745][ T2027] ? mark_lock+0x38/0x3e0 [ 444.673867][ T2027] ? __lock_acquire+0xb9a/0x1680 [ 444.674022][ T2027] netlink_rcv_skb+0x130/0x360 [ 444.674216][ T2027] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 444.674367][ T2027] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 444.674532][ T2027] ? netlink_deliver_tap+0x13e/0x340 [ 444.674683][ T2027] ? netlink_deliver_tap+0xc3/0x340 [ 444.674832][ T2027] netlink_unicast+0x44b/0x710 [ 444.674992][ T2027] ? __pfx_netlink_unicast+0x10/0x10 [ 444.675143][ T2027] ? find_held_lock+0x2c/0x110 [ 444.675299][ T2027] netlink_sendmsg+0x723/0xbe0 [ 444.675474][ T2027] ? __pfx_netlink_sendmsg+0x10/0x10 [ 444.675632][ T2027] ____sys_sendmsg+0x7ac/0xa10 [ 444.675784][ T2027] ? __pfx_____sys_sendmsg+0x10/0x10 [ 444.675934][ T2027] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 444.676156][ T2027] ___sys_sendmsg+0xee/0x170 [ 444.676306][ T2027] ? __pfx____sys_sendmsg+0x10/0x10 [ 444.676475][ T2027] ? kasan_save_stack+0x34/0x50 [ 444.676641][ T2027] ? kasan_save_stack+0x24/0x50 [ 444.676802][ T2027] ? __kasan_record_aux_stack+0x8e/0xa0 [ 444.676960][ T2027] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 444.677160][ T2027] ? __x64_sys_close+0x7c/0xd0 [ 444.677318][ T2027] ? do_syscall_64+0xc1/0x1d0 [ 444.677483][ T2027] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 444.677710][ T2027] ? __lock_acquire+0xb9a/0x1680 [ 444.677893][ T2027] ? find_held_lock+0x2c/0x110 [ 444.678051][ T2027] ? __lock_release+0x103/0x460 [ 444.678229][ T2027] ? __virt_addr_valid+0x22b/0x430 [ 444.678395][ T2027] ? __pfx___lock_release+0x10/0x10 [ 444.678571][ T2027] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 444.678740][ T2027] __sys_sendmsg+0x109/0x1a0 [ 444.678901][ T2027] ? __pfx___sys_sendmsg+0x10/0x10 [ 444.679059][ T2027] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 444.679267][ T2027] do_syscall_64+0xc1/0x1d0 [ 444.679462][ T2027] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 444.679724][ T2027] RIP: 0033:0x7fa346b169a7 [ 444.679973][ T2027] 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 [ 444.680834][ T2027] RSP: 002b:00007ffe725d3938 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 444.681187][ T2027] RAX: ffffffffffffffda RBX: 00007ffe725d4060 RCX: 00007fa346b169a7 [ 444.681558][ T2027] RDX: 0000000000000000 RSI: 00007ffe725d39a0 RDI: 0000000000000005 [ 444.681922][ T2027] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 444.682292][ T2027] R10: 00007fa3469d4ef8 R11: 0000000000000246 R12: 0000000000000002 [ 444.682667][ T2027] R13: 0000000067792792 R14: 0000000000498600 R15: 0000000000000000 [ 444.683041][ T2027]