[ 13.205203][ T287] 8021q: 802.1Q VLAN Support v1.8 [ 14.890318][ T308] br0: port 1(veth1) entered blocking state [ 14.891094][ T308] br0: port 1(veth1) entered disabled state [ 14.891537][ T308] veth1: entered allmulticast mode [ 14.893599][ T308] veth1: entered promiscuous mode [ 14.976362][ T310] br0: port 2(veth2) entered blocking state [ 14.976708][ T310] br0: port 2(veth2) entered disabled state [ 14.977143][ T310] veth2: entered allmulticast mode [ 14.979103][ T310] veth2: entered promiscuous mode [ 15.233222][ T39] br0: port 1(veth1) entered blocking state [ 15.233787][ T39] br0: port 1(veth1) entered forwarding state [ 15.329315][ T37] br0: port 2(veth2) entered blocking state [ 15.329644][ T37] br0: port 2(veth2) entered forwarding state [ 70.489777][ T581] Mirror/redirect action on [ 78.162586][ T617] br0: port 2(veth2) entered disabled state [ 78.171733][ T617] ip (617) used greatest stack depth: 23632 bytes left [ 78.240769][ T619] br0: port 1(veth1) entered disabled state [ 78.350164][ T621] veth2: left allmulticast mode [ 78.350708][ T621] veth2: left promiscuous mode [ 78.351233][ T621] br0: port 2(veth2) entered disabled state [ 78.354183][ T621] veth1: left allmulticast mode [ 78.354925][ T621] veth1: left promiscuous mode [ 78.355467][ T621] br0: port 1(veth1) entered disabled state [ 78.537187][ T622] [ 78.537384][ T622] ============================================ [ 78.537704][ T622] WARNING: possible recursive locking detected [ 78.538009][ T622] 6.13.0-rc5-virtme #1 Not tainted [ 78.538259][ T622] -------------------------------------------- [ 78.538562][ T622] ip/622 is trying to acquire lock: [ 78.538808][ T622] ffffffff8f1d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 78.539327][ T622] [ 78.539327][ T622] but task is already holding lock: [ 78.539699][ T622] ffffffff8f1d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 78.540212][ T622] [ 78.540212][ T622] other info that might help us debug this: [ 78.540572][ T622] Possible unsafe locking scenario: [ 78.540572][ T622] [ 78.540926][ T622] CPU0 [ 78.541116][ T622] ---- [ 78.541298][ T622] lock((netdev_chain).rwsem); [ 78.541545][ T622] lock((netdev_chain).rwsem); [ 78.541801][ T622] [ 78.541801][ T622] *** DEADLOCK *** [ 78.541801][ T622] [ 78.542171][ T622] May be due to missing lock nesting notation [ 78.542171][ T622] [ 78.542528][ T622] 2 locks held by ip/622: [ 78.542719][ T622] #0: ffffffff8f1e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 78.543178][ T622] #1: ffffffff8f1d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 78.543703][ T622] [ 78.543703][ T622] stack backtrace: [ 78.544012][ T622] CPU: 3 UID: 0 PID: 622 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 78.544391][ T622] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 78.544705][ T622] Call Trace: [ 78.544899][ T622] [ 78.545029][ T622] dump_stack_lvl+0x82/0xd0 [ 78.545288][ T622] print_deadlock_bug+0x40a/0x650 [ 78.545554][ T622] validate_chain+0x5bf/0xae0 [ 78.545805][ T622] ? __pfx_validate_chain+0x10/0x10 [ 78.546060][ T622] ? hlock_class+0x4e/0x130 [ 78.546313][ T622] ? mark_lock+0x38/0x3e0 [ 78.546504][ T622] __lock_acquire+0xb9a/0x1680 [ 78.546771][ T622] lock_acquire.part.0+0xeb/0x330 [ 78.547023][ T622] ? blocking_notifier_call_chain+0x50/0x90 [ 78.547341][ T622] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 78.547667][ T622] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 78.547918][ T622] ? trace_lock_acquire+0x14c/0x1f0 [ 78.548177][ T622] ? lock_acquire+0x32/0xc0 [ 78.548416][ T622] ? blocking_notifier_call_chain+0x50/0x90 [ 78.548682][ T622] down_read+0x9f/0x340 [ 78.548880][ T622] ? blocking_notifier_call_chain+0x50/0x90 [ 78.549191][ T622] ? __pfx_down_read+0x10/0x10 [ 78.549448][ T622] ? __lock_release+0x103/0x460 [ 78.549694][ T622] ? netconsole_netdev_event+0x2c1/0x620 [ 78.549947][ T622] ? __pfx___lock_release+0x10/0x10 [ 78.550198][ T622] blocking_notifier_call_chain+0x50/0x90 [ 78.550451][ T622] __netdev_upper_dev_unlink+0xd9/0x220 [ 78.550707][ T622] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 78.551031][ T622] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 78.551282][ T622] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 78.551596][ T622] ? rtnl_is_locked+0x15/0x20 [ 78.551848][ T622] netdev_upper_dev_unlink+0x71/0xa0 [ 78.552100][ T622] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 78.552409][ T622] ? netconsole_netdev_event+0x2c1/0x620 [ 78.552665][ T622] ? mutex_is_locked+0x1c/0x60 [ 78.552928][ T622] ? rtnl_is_locked+0x15/0x20 [ 78.553191][ T622] ? netdev_master_upper_dev_get+0x13/0x120 [ 78.553509][ T622] vrf_device_event+0x78/0xe0 [vrf] [ 78.553768][ T622] notifier_call_chain+0xcd/0x150 [ 78.554019][ T622] blocking_notifier_call_chain+0x66/0x90 [ 78.554269][ T622] unregister_netdevice_many_notify+0xa7b/0x1580 [ 78.554580][ T622] ? __lock_release+0x103/0x460 [ 78.554834][ T622] ? __pfx___lock_release+0x10/0x10 [ 78.555087][ T622] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 78.555396][ T622] ? hlock_class+0x4e/0x130 [ 78.555647][ T622] ? mark_held_locks+0x9e/0xe0 [ 78.555902][ T622] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 78.556161][ T622] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 78.556480][ T622] rtnl_dellink+0x348/0xa40 [ 78.556754][ T622] ? __pfx_rtnl_dellink+0x10/0x10 [ 78.557029][ T622] ? find_held_lock+0x2c/0x110 [ 78.557282][ T622] ? __lock_release+0x103/0x460 [ 78.557529][ T622] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 78.557774][ T622] ? __pfx___lock_release+0x10/0x10 [ 78.558026][ T622] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 78.558282][ T622] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 78.558541][ T622] ? __pfx_rtnl_dellink+0x10/0x10 [ 78.558796][ T622] rtnetlink_rcv_msg+0x712/0xc10 [ 78.559046][ T622] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 78.559297][ T622] ? hlock_class+0x4e/0x130 [ 78.559543][ T622] ? mark_lock+0x38/0x3e0 [ 78.559729][ T622] ? __lock_acquire+0xb9a/0x1680 [ 78.559975][ T622] netlink_rcv_skb+0x130/0x360 [ 78.560230][ T622] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 78.560507][ T622] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 78.560770][ T622] ? netlink_deliver_tap+0x13e/0x340 [ 78.561017][ T622] ? netlink_deliver_tap+0xc3/0x340 [ 78.561271][ T622] netlink_unicast+0x44b/0x710 [ 78.561533][ T622] ? __pfx_netlink_unicast+0x10/0x10 [ 78.561779][ T622] ? find_held_lock+0x2c/0x110 [ 78.562041][ T622] netlink_sendmsg+0x723/0xbe0 [ 78.562288][ T622] ? __pfx_netlink_sendmsg+0x10/0x10 [ 78.562539][ T622] ____sys_sendmsg+0x7ac/0xa10 [ 78.562789][ T622] ? __pfx_____sys_sendmsg+0x10/0x10 [ 78.563036][ T622] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 78.563350][ T622] ___sys_sendmsg+0xee/0x170 [ 78.563595][ T622] ? __pfx____sys_sendmsg+0x10/0x10 [ 78.563850][ T622] ? kasan_save_stack+0x34/0x50 [ 78.564097][ T622] ? kasan_save_stack+0x24/0x50 [ 78.564347][ T622] ? __kasan_record_aux_stack+0x8e/0xa0 [ 78.564596][ T622] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 78.564907][ T622] ? __x64_sys_close+0x7c/0xd0 [ 78.565152][ T622] ? do_syscall_64+0xc1/0x1d0 [ 78.565408][ T622] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 78.565723][ T622] ? __lock_acquire+0xb9a/0x1680 [ 78.565996][ T622] ? find_held_lock+0x2c/0x110 [ 78.566253][ T622] ? __lock_release+0x103/0x460 [ 78.566502][ T622] ? __virt_addr_valid+0x22b/0x430 [ 78.566763][ T622] ? __pfx___lock_release+0x10/0x10 [ 78.567015][ T622] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 78.567273][ T622] __sys_sendmsg+0x109/0x1a0 [ 78.567526][ T622] ? __pfx___sys_sendmsg+0x10/0x10 [ 78.567792][ T622] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 78.568114][ T622] do_syscall_64+0xc1/0x1d0 [ 78.568367][ T622] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 78.568684][ T622] RIP: 0033:0x7f50c85869a7 [ 78.568945][ T622] 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 [ 78.569849][ T622] RSP: 002b:00007ffdf48207b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 78.570236][ T622] RAX: ffffffffffffffda RBX: 00007ffdf4820ee0 RCX: 00007f50c85869a7 [ 78.570608][ T622] RDX: 0000000000000000 RSI: 00007ffdf4820820 RDI: 0000000000000005 [ 78.570979][ T622] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 78.571367][ T622] R10: 00007f50c8444ef8 R11: 0000000000000246 R12: 0000000000000002 [ 78.571751][ T622] R13: 000000006779039b R14: 0000000000498600 R15: 0000000000000000 [ 78.572133][ T622]