[ 85.652997][ T959] br0: port 1(veth0) entered blocking state [ 85.653334][ T959] br0: port 1(veth0) entered disabled state [ 85.653619][ T959] veth0: entered allmulticast mode [ 85.656186][ T959] veth0: entered promiscuous mode [ 85.962071][ T962] br0: port 1(veth0) entered blocking state [ 85.962555][ T962] br0: port 1(veth0) entered forwarding state [ 89.365819][ T1007] veth0: left allmulticast mode [ 89.366108][ T1007] veth0: left promiscuous mode [ 89.366493][ T1007] br0: port 1(veth0) entered disabled state [ 89.667478][ T1010] 8021q: 802.1Q VLAN Support v1.8 [ 89.812429][ T1011] [ 89.812563][ T1011] ============================================ [ 89.812831][ T1011] WARNING: possible recursive locking detected [ 89.813035][ T1011] 6.13.0-rc5-virtme #1 Not tainted [ 89.813203][ T1011] -------------------------------------------- [ 89.813411][ T1011] ip/1011 is trying to acquire lock: [ 89.813568][ T1011] ffffffffa79dfc30 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 89.813907][ T1011] [ 89.813907][ T1011] but task is already holding lock: [ 89.814136][ T1011] ffffffffa79dfc30 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 89.814451][ T1011] [ 89.814451][ T1011] other info that might help us debug this: [ 89.814702][ T1011] Possible unsafe locking scenario: [ 89.814702][ T1011] [ 89.814931][ T1011] CPU0 [ 89.815047][ T1011] ---- [ 89.815164][ T1011] lock((netdev_chain).rwsem); [ 89.815320][ T1011] lock((netdev_chain).rwsem); [ 89.815476][ T1011] [ 89.815476][ T1011] *** DEADLOCK *** [ 89.815476][ T1011] [ 89.815741][ T1011] May be due to missing lock nesting notation [ 89.815741][ T1011] [ 89.815971][ T1011] 2 locks held by ip/1011: [ 89.816126][ T1011] #0: ffffffffa79f1088 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x653/0xa70 [ 89.816410][ T1011] #1: ffffffffa79dfc30 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 89.816741][ T1011] [ 89.816741][ T1011] stack backtrace: [ 89.816944][ T1011] CPU: 3 UID: 0 PID: 1011 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 89.817182][ T1011] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 89.817430][ T1011] Call Trace: [ 89.817557][ T1011] [ 89.817643][ T1011] dump_stack_lvl+0x82/0xd0 [ 89.817821][ T1011] print_deadlock_bug+0x40a/0x650 [ 89.817983][ T1011] validate_chain+0x5bf/0xae0 [ 89.818152][ T1011] ? __pfx_validate_chain+0x10/0x10 [ 89.818317][ T1011] ? hlock_class+0x4e/0x130 [ 89.818482][ T1011] ? mark_lock+0x38/0x3e0 [ 89.818603][ T1011] ? add_lock_to_list+0x61/0x5e0 [ 89.818775][ T1011] __lock_acquire+0xb9a/0x1680 [ 89.818963][ T1011] ? validate_chain+0x5a7/0xae0 [ 89.819122][ T1011] lock_acquire.part.0+0xeb/0x330 [ 89.819282][ T1011] ? blocking_notifier_call_chain+0x50/0x90 [ 89.819485][ T1011] ? __pfx_validate_chain+0x10/0x10 [ 89.819649][ T1011] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 89.819816][ T1011] ? trace_lock_acquire+0x14c/0x1f0 [ 89.819974][ T1011] ? lock_acquire+0x32/0xc0 [ 89.820131][ T1011] ? blocking_notifier_call_chain+0x50/0x90 [ 89.820327][ T1011] down_read+0x9f/0x340 [ 89.820452][ T1011] ? blocking_notifier_call_chain+0x50/0x90 [ 89.820649][ T1011] ? __pfx_down_read+0x10/0x10 [ 89.820850][ T1011] blocking_notifier_call_chain+0x50/0x90 [ 89.821014][ T1011] __dev_open+0x15c/0x430 [ 89.821138][ T1011] ? __pfx___dev_open+0x10/0x10 [ 89.821300][ T1011] ? mark_held_locks+0x9e/0xe0 [ 89.821458][ T1011] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 89.821663][ T1011] __dev_change_flags+0x469/0x6c0 [ 89.821835][ T1011] ? __pfx___dev_change_flags+0x10/0x10 [ 89.821999][ T1011] dev_change_flags+0x80/0x160 [ 89.822160][ T1011] vlan_device_event+0x810/0x2130 [8021q] [ 89.822328][ T1011] ? __pfx_nf_tables_netdev_event+0x10/0x10 [nf_tables] [ 89.822554][ T1011] ? __pfx_vlan_device_event+0x10/0x10 [8021q] [ 89.822768][ T1011] ? nft_offload_netdev_event+0x3d/0x3b0 [nf_tables] [ 89.823003][ T1011] notifier_call_chain+0xcd/0x150 [ 89.823164][ T1011] blocking_notifier_call_chain+0x66/0x90 [ 89.823324][ T1011] __dev_notify_flags+0xe6/0x250 [ 89.823485][ T1011] ? __pfx___dev_notify_flags+0x10/0x10 [ 89.823646][ T1011] ? __pfx___dev_change_flags+0x10/0x10 [ 89.823816][ T1011] ? unwind_get_return_address+0x5e/0xa0 [ 89.823976][ T1011] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 89.824183][ T1011] ? __pfx_validate_chain+0x10/0x10 [ 89.824343][ T1011] dev_change_flags+0xec/0x160 [ 89.824547][ T1011] do_setlink.constprop.0+0x79d/0x2300 [ 89.824717][ T1011] ? __pfx_do_setlink.constprop.0+0x10/0x10 [ 89.824916][ T1011] ? lock_acquire.part.0+0xeb/0x330 [ 89.825070][ T1011] ? rtnl_newlink+0x653/0xa70 [ 89.825235][ T1011] ? rtnl_newlink+0xb9/0xa70 [ 89.825394][ T1011] ? rtnetlink_rcv_msg+0x712/0xc10 [ 89.825556][ T1011] ? __mutex_trylock_common+0xfa/0x260 [ 89.825743][ T1011] ? __pfx___mutex_trylock_common+0x10/0x10 [ 89.825947][ T1011] ? lock_acquire+0x32/0xc0 [ 89.826110][ T1011] ? trace_contention_end+0xef/0x150 [ 89.826271][ T1011] ? __mutex_lock+0x190/0xbc0 [ 89.826433][ T1011] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 89.826594][ T1011] ? rtnl_newlink+0x653/0xa70 [ 89.826763][ T1011] ? __pfx___mutex_lock+0x10/0x10 [ 89.826923][ T1011] ? __create_object+0x5e/0xb0 [ 89.827087][ T1011] ? __rtnl_newlink+0x3f2/0xa80 [ 89.827248][ T1011] rtnl_newlink+0x69c/0xa70 [ 89.827409][ T1011] ? __pfx_rtnl_newlink+0x10/0x10 [ 89.827566][ T1011] ? find_held_lock+0x2c/0x110 [ 89.827738][ T1011] ? __pfx___lock_release+0x10/0x10 [ 89.827896][ T1011] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 89.828055][ T1011] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 89.828218][ T1011] ? __pfx_rtnl_newlink+0x10/0x10 [ 89.828376][ T1011] rtnetlink_rcv_msg+0x712/0xc10 [ 89.828536][ T1011] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 89.828695][ T1011] ? hlock_class+0x4e/0x130 [ 89.828872][ T1011] ? mark_lock+0x38/0x3e0 [ 89.828994][ T1011] ? __lock_acquire+0xb9a/0x1680 [ 89.829153][ T1011] netlink_rcv_skb+0x130/0x360 [ 89.829314][ T1011] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 89.829471][ T1011] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 89.829629][ T1011] ? netlink_deliver_tap+0x13e/0x340 [ 89.829786][ T1011] ? netlink_deliver_tap+0xc3/0x340 [ 89.829952][ T1011] netlink_unicast+0x44b/0x710 [ 89.830108][ T1011] ? __pfx_netlink_unicast+0x10/0x10 [ 89.830264][ T1011] ? find_held_lock+0x2c/0x110 [ 89.830419][ T1011] ? __lock_release+0x103/0x460 [ 89.830599][ T1011] netlink_sendmsg+0x723/0xbe0 [ 89.830799][ T1011] ? __pfx_netlink_sendmsg+0x10/0x10 [ 89.830958][ T1011] ? _copy_from_user+0x55/0xa0 [ 89.831117][ T1011] ____sys_sendmsg+0x7ac/0xa10 [ 89.831283][ T1011] ? __pfx_____sys_sendmsg+0x10/0x10 [ 89.831442][ T1011] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 89.831640][ T1011] ___sys_sendmsg+0xee/0x170 [ 89.831811][ T1011] ? __pfx____sys_sendmsg+0x10/0x10 [ 89.831968][ T1011] ? kasan_save_stack+0x34/0x50 [ 89.832155][ T1011] ? kasan_save_stack+0x24/0x50 [ 89.832346][ T1011] ? __kasan_record_aux_stack+0x8e/0xa0 [ 89.832554][ T1011] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 89.832804][ T1011] ? __x64_sys_close+0x7c/0xd0 [ 89.832990][ T1011] ? do_syscall_64+0xc1/0x1d0 [ 89.833227][ T1011] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.833541][ T1011] ? __lock_acquire+0xb9a/0x1680 [ 89.833791][ T1011] ? find_held_lock+0x2c/0x110 [ 89.834039][ T1011] ? __lock_release+0x103/0x460 [ 89.834273][ T1011] ? __virt_addr_valid+0x22b/0x430 [ 89.834525][ T1011] ? __pfx___lock_release+0x10/0x10 [ 89.834768][ T1011] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 89.835008][ T1011] __sys_sendmsg+0x109/0x1a0 [ 89.835261][ T1011] ? __pfx___sys_sendmsg+0x10/0x10 [ 89.835519][ T1011] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 89.835833][ T1011] do_syscall_64+0xc1/0x1d0 [ 89.836100][ T1011] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.836408][ T1011] RIP: 0033:0x7f6080bbe9a7 [ 89.836668][ T1011] 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 [ 89.837540][ T1011] RSP: 002b:00007ffc95f8e448 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 89.837920][ T1011] RAX: ffffffffffffffda RBX: 00007ffc95f8eb80 RCX: 00007f6080bbe9a7 [ 89.838287][ T1011] RDX: 0000000000000000 RSI: 00007ffc95f8e4b0 RDI: 0000000000000005 [ 89.838655][ T1011] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078 [ 89.839039][ T1011] R10: 00007f6080a7c4a8 R11: 0000000000000246 R12: 0000000000000003 [ 89.839413][ T1011] R13: 0000000067795817 R14: 0000000000498600 R15: 0000000000000000 [ 89.839780][ T1011] [ 89.997086][ T1014] br0: port 1(veth0.10) entered blocking state [ 89.997390][ T1014] br0: port 1(veth0.10) entered disabled state [ 89.997646][ T1014] veth0.10: entered allmulticast mode [ 89.997830][ T1014] veth0: entered allmulticast mode [ 89.999391][ T1014] veth0.10: entered promiscuous mode [ 89.999582][ T1014] veth0: entered promiscuous mode [ 90.000581][ T1014] br0: port 1(veth0.10) entered blocking state [ 90.000812][ T1014] br0: port 1(veth0.10) entered forwarding state [ 92.723323][ T1065] veth0: left allmulticast mode [ 92.723645][ T1065] veth0: left promiscuous mode [ 92.724944][ T1065] br0: port 1(veth0.10) entered disabled state [ 92.887845][ T1067] veth0.10 (unregistering): left allmulticast mode [ 92.888143][ T1067] veth0.10 (unregistering): left promiscuous mode [ 92.888393][ T1067] br0: port 1(veth0.10) entered disabled state [ 94.395043][ T1090] Initializing XFRM netlink socket [ 118.575891][ T1390] br0: port 1(veth0) entered blocking state [ 118.576195][ T1390] br0: port 1(veth0) entered disabled state [ 118.576444][ T1390] veth0: entered allmulticast mode [ 118.577981][ T1390] veth0: entered promiscuous mode [ 118.816868][ T1393] br0: port 1(veth0) entered blocking state [ 118.817149][ T1393] br0: port 1(veth0) entered forwarding state [ 122.608731][ T1438] veth0: left allmulticast mode [ 122.608933][ T1438] veth0: left promiscuous mode [ 122.609218][ T1438] br0: port 1(veth0) entered disabled state [ 123.020142][ T1443] br0: port 1(veth0.10) entered blocking state [ 123.020414][ T1443] br0: port 1(veth0.10) entered disabled state [ 123.020656][ T1443] veth0.10: entered allmulticast mode [ 123.020817][ T1443] veth0: entered allmulticast mode [ 123.022371][ T1443] veth0.10: entered promiscuous mode [ 123.022542][ T1443] veth0: entered promiscuous mode [ 123.024705][ T1443] br0: port 1(veth0.10) entered blocking state [ 123.024941][ T1443] br0: port 1(veth0.10) entered forwarding state [ 127.043017][ T1494] veth0: left allmulticast mode [ 127.043345][ T1494] veth0: left promiscuous mode [ 127.044629][ T1494] br0: port 1(veth0.10) entered disabled state [ 127.207985][ T1496] veth0.10 (unregistering): left allmulticast mode [ 127.208291][ T1496] veth0.10 (unregistering): left promiscuous mode [ 127.208509][ T1496] br0: port 1(veth0.10) entered disabled state