[ 12.859908][ T287] 8021q: 802.1Q VLAN Support v1.8 [ 16.139176][ T330] br1: port 1(veth1.100) entered blocking state [ 16.139682][ T330] br1: port 1(veth1.100) entered disabled state [ 16.140411][ T330] veth1.100: entered allmulticast mode [ 16.140607][ T330] veth1: entered allmulticast mode [ 16.143566][ T330] veth1.100: entered promiscuous mode [ 16.143767][ T330] veth1: entered promiscuous mode [ 16.389573][ T333] br1: port 1(veth1.100) entered blocking state [ 16.390016][ T333] br1: port 1(veth1.100) entered forwarding state [ 17.003281][ T343] br2: port 1(veth1.200) entered blocking state [ 17.003710][ T343] br2: port 1(veth1.200) entered disabled state [ 17.004106][ T343] veth1.200: entered allmulticast mode [ 17.006892][ T343] veth1.200: entered promiscuous mode [ 17.268850][ T346] br2: port 1(veth1.200) entered blocking state [ 17.269212][ T346] br2: port 1(veth1.200) entered forwarding state [ 28.657323][ T408] veth1.100: left allmulticast mode [ 28.657590][ T408] veth1.100: left promiscuous mode [ 28.658115][ T408] br1: port 1(veth1.100) entered disabled state [ 28.746743][ T409] veth1.200: left allmulticast mode [ 28.747119][ T409] veth1: left allmulticast mode [ 28.747351][ T409] veth1.200: left promiscuous mode [ 28.748255][ T409] veth1: left promiscuous mode [ 28.748809][ T409] br2: port 1(veth1.200) entered disabled state [ 30.906754][ T411] br2: port 1(veth1.200) entered blocking state [ 30.907145][ T411] br2: port 1(veth1.200) entered disabled state [ 30.907516][ T411] veth1.200: entered allmulticast mode [ 30.907748][ T411] veth1: entered allmulticast mode [ 30.909766][ T411] veth1.200: entered promiscuous mode [ 30.910064][ T411] veth1: entered promiscuous mode [ 30.911897][ T411] br2: port 1(veth1.200) entered blocking state [ 30.912247][ T411] br2: port 1(veth1.200) entered forwarding state [ 30.983288][ T412] br1: port 1(veth1.100) entered blocking state [ 30.984611][ T412] br1: port 1(veth1.100) entered disabled state [ 30.985008][ T412] veth1.100: entered allmulticast mode [ 30.987083][ T412] veth1.100: entered promiscuous mode [ 30.988198][ T412] br1: port 1(veth1.100) entered blocking state [ 30.988566][ T412] br1: port 1(veth1.100) entered forwarding state [ 36.820097][ T464] veth1.200: left allmulticast mode [ 36.820425][ T464] veth1.200: left promiscuous mode [ 36.820962][ T464] br2: port 1(veth1.200) entered disabled state [ 37.350032][ T471] veth1.100: left allmulticast mode [ 37.350306][ T471] veth1: left allmulticast mode [ 37.350536][ T471] veth1.100: left promiscuous mode [ 37.350773][ T471] veth1: left promiscuous mode [ 37.351291][ T471] br1: port 1(veth1.100) entered disabled state [ 39.285528][ T492] [ 39.285754][ T492] ============================================ [ 39.285964][ T492] WARNING: possible recursive locking detected [ 39.286168][ T492] 6.13.0-rc5-virtme #1 Not tainted [ 39.286314][ T492] -------------------------------------------- [ 39.286504][ T492] ip/492 is trying to acquire lock: [ 39.286658][ T492] ffffffff9f1d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 39.286989][ T492] [ 39.286989][ T492] but task is already holding lock: [ 39.287204][ T492] ffffffff9f1d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 39.287527][ T492] [ 39.287527][ T492] other info that might help us debug this: [ 39.287744][ T492] Possible unsafe locking scenario: [ 39.287744][ T492] [ 39.287960][ T492] CPU0 [ 39.288072][ T492] ---- [ 39.288198][ T492] lock((netdev_chain).rwsem); [ 39.288361][ T492] lock((netdev_chain).rwsem); [ 39.288513][ T492] [ 39.288513][ T492] *** DEADLOCK *** [ 39.288513][ T492] [ 39.288740][ T492] May be due to missing lock nesting notation [ 39.288740][ T492] [ 39.288961][ T492] 2 locks held by ip/492: [ 39.289082][ T492] #0: ffffffff9f1e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 39.289380][ T492] #1: ffffffff9f1d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 39.289693][ T492] [ 39.289693][ T492] stack backtrace: [ 39.289877][ T492] CPU: 2 UID: 0 PID: 492 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 39.290146][ T492] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 39.290337][ T492] Call Trace: [ 39.290471][ T492] [ 39.290551][ T492] dump_stack_lvl+0x82/0xd0 [ 39.290707][ T492] print_deadlock_bug+0x40a/0x650 [ 39.290858][ T492] validate_chain+0x5bf/0xae0 [ 39.291025][ T492] ? __pfx_validate_chain+0x10/0x10 [ 39.291182][ T492] ? hlock_class+0x4e/0x130 [ 39.291337][ T492] ? mark_lock+0x38/0x3e0 [ 39.291452][ T492] __lock_acquire+0xb9a/0x1680 [ 39.291621][ T492] lock_acquire.part.0+0xeb/0x330 [ 39.291789][ T492] ? blocking_notifier_call_chain+0x50/0x90 [ 39.291992][ T492] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 39.292194][ T492] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 39.292361][ T492] ? trace_lock_acquire+0x14c/0x1f0 [ 39.292510][ T492] ? lock_acquire+0x32/0xc0 [ 39.292670][ T492] ? blocking_notifier_call_chain+0x50/0x90 [ 39.292875][ T492] down_read+0x9f/0x340 [ 39.293004][ T492] ? blocking_notifier_call_chain+0x50/0x90 [ 39.293203][ T492] ? __pfx_down_read+0x10/0x10 [ 39.293347][ T492] ? __lock_release+0x103/0x460 [ 39.293500][ T492] ? netconsole_netdev_event+0x2c1/0x620 [ 39.293652][ T492] ? __pfx___lock_release+0x10/0x10 [ 39.293800][ T492] blocking_notifier_call_chain+0x50/0x90 [ 39.293950][ T492] __netdev_upper_dev_unlink+0xd9/0x220 [ 39.294102][ T492] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 39.294283][ T492] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 39.294429][ T492] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 39.294613][ T492] ? rtnl_is_locked+0x15/0x20 [ 39.294761][ T492] netdev_upper_dev_unlink+0x71/0xa0 [ 39.294906][ T492] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 39.295099][ T492] ? netconsole_netdev_event+0x2c1/0x620 [ 39.295245][ T492] ? mutex_is_locked+0x1c/0x60 [ 39.295394][ T492] ? rtnl_is_locked+0x15/0x20 [ 39.295558][ T492] ? netdev_master_upper_dev_get+0x13/0x120 [ 39.295737][ T492] vrf_device_event+0x78/0xe0 [vrf] [ 39.295886][ T492] notifier_call_chain+0xcd/0x150 [ 39.296041][ T492] blocking_notifier_call_chain+0x66/0x90 [ 39.296189][ T492] unregister_netdevice_many_notify+0xa7b/0x1580 [ 39.296369][ T492] ? hlock_class+0x4e/0x130 [ 39.296512][ T492] ? mark_lock+0x38/0x3e0 [ 39.296623][ T492] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 39.296802][ T492] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 39.296986][ T492] ? kfree+0xf3/0x330 [ 39.297101][ T492] ? vlan_vid_del+0x310/0x5e0 [ 39.297254][ T492] ? vlan_vid_del+0x310/0x5e0 [ 39.297399][ T492] rtnl_dellink+0x348/0xa40 [ 39.297546][ T492] ? __pfx_rtnl_dellink+0x10/0x10 [ 39.297705][ T492] ? find_held_lock+0x2c/0x110 [ 39.297853][ T492] ? __lock_release+0x103/0x460 [ 39.297997][ T492] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 39.298143][ T492] ? __pfx___lock_release+0x10/0x10 [ 39.298299][ T492] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 39.298452][ T492] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 39.298604][ T492] ? __pfx_rtnl_dellink+0x10/0x10 [ 39.298754][ T492] rtnetlink_rcv_msg+0x712/0xc10 [ 39.298899][ T492] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 39.299048][ T492] ? hlock_class+0x4e/0x130 [ 39.299198][ T492] ? mark_lock+0x38/0x3e0 [ 39.299310][ T492] ? __lock_acquire+0xb9a/0x1680 [ 39.299473][ T492] netlink_rcv_skb+0x130/0x360 [ 39.299626][ T492] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 39.299773][ T492] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 39.299931][ T492] ? netlink_deliver_tap+0x13e/0x340 [ 39.300081][ T492] ? netlink_deliver_tap+0xc3/0x340 [ 39.300227][ T492] netlink_unicast+0x44b/0x710 [ 39.300377][ T492] ? __pfx_netlink_unicast+0x10/0x10 [ 39.300526][ T492] ? find_held_lock+0x2c/0x110 [ 39.300675][ T492] netlink_sendmsg+0x723/0xbe0 [ 39.300822][ T492] ? __pfx_netlink_sendmsg+0x10/0x10 [ 39.300972][ T492] ____sys_sendmsg+0x7ac/0xa10 [ 39.301122][ T492] ? __pfx_____sys_sendmsg+0x10/0x10 [ 39.301270][ T492] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 39.301462][ T492] ___sys_sendmsg+0xee/0x170 [ 39.301608][ T492] ? __pfx____sys_sendmsg+0x10/0x10 [ 39.301754][ T492] ? kasan_save_stack+0x34/0x50 [ 39.301900][ T492] ? kasan_save_stack+0x24/0x50 [ 39.302045][ T492] ? __kasan_record_aux_stack+0x8e/0xa0 [ 39.302191][ T492] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 39.302374][ T492] ? __x64_sys_close+0x7c/0xd0 [ 39.302521][ T492] ? do_syscall_64+0xc1/0x1d0 [ 39.302667][ T492] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 39.302862][ T492] ? __lock_acquire+0xb9a/0x1680 [ 39.303020][ T492] ? find_held_lock+0x2c/0x110 [ 39.303165][ T492] ? __lock_release+0x103/0x460 [ 39.303309][ T492] ? __virt_addr_valid+0x22b/0x430 [ 39.303460][ T492] ? __pfx___lock_release+0x10/0x10 [ 39.303612][ T492] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 39.303758][ T492] __sys_sendmsg+0x109/0x1a0 [ 39.303906][ T492] ? __pfx___sys_sendmsg+0x10/0x10 [ 39.304056][ T492] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 39.304244][ T492] do_syscall_64+0xc1/0x1d0 [ 39.304396][ T492] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 39.304583][ T492] RIP: 0033:0x7fdf744cb9a7 [ 39.304744][ T492] 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 [ 39.305272][ T492] RSP: 002b:00007ffd27d0cb78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 39.305498][ T492] RAX: ffffffffffffffda RBX: 00007ffd27d0d2a0 RCX: 00007fdf744cb9a7 [ 39.305746][ T492] RDX: 0000000000000000 RSI: 00007ffd27d0cbe0 RDI: 0000000000000005 [ 39.305973][ T492] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 39.306206][ T492] R10: 00007fdf74389ef8 R11: 0000000000000246 R12: 0000000000000002 [ 39.306430][ T492] R13: 00000000677957e8 R14: 0000000000498600 R15: 0000000000000000 [ 39.306671][ T492]