[ 12.214016][ T286] 8021q: 802.1Q VLAN Support v1.8 [ 14.310409][ T314] br1: port 1(veth1) entered blocking state [ 14.310882][ T314] br1: port 1(veth1) entered disabled state [ 14.311260][ T314] veth1: entered allmulticast mode [ 14.313240][ T314] veth1: entered promiscuous mode [ 14.395073][ T40] br1: port 1(veth1) entered blocking state [ 14.395606][ T40] br1: port 1(veth1) entered forwarding state [ 27.647379][ T414] br1: port 1(veth1) entered disabled state [ 27.725060][ T415] veth1: left allmulticast mode [ 27.725311][ T415] veth1: left promiscuous mode [ 27.725636][ T415] br1: port 1(veth1) entered disabled state [ 28.993079][ T432] [ 28.993296][ T432] ============================================ [ 28.993499][ T432] WARNING: possible recursive locking detected [ 28.993675][ T432] 6.13.0-rc5-virtme #1 Not tainted [ 28.993820][ T432] -------------------------------------------- [ 28.993995][ T432] ip/432 is trying to acquire lock: [ 28.994141][ T432] ffffffff95dd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 28.994442][ T432] [ 28.994442][ T432] but task is already holding lock: [ 28.994650][ T432] ffffffff95dd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 28.994940][ T432] [ 28.994940][ T432] other info that might help us debug this: [ 28.995157][ T432] Possible unsafe locking scenario: [ 28.995157][ T432] [ 28.995392][ T432] CPU0 [ 28.995501][ T432] ---- [ 28.995616][ T432] lock((netdev_chain).rwsem); [ 28.995759][ T432] lock((netdev_chain).rwsem); [ 28.995902][ T432] [ 28.995902][ T432] *** DEADLOCK *** [ 28.995902][ T432] [ 28.996120][ T432] May be due to missing lock nesting notation [ 28.996120][ T432] [ 28.996332][ T432] 2 locks held by ip/432: [ 28.996449][ T432] #0: ffffffff95de7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 28.996713][ T432] #1: ffffffff95dd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 28.997012][ T432] [ 28.997012][ T432] stack backtrace: [ 28.997198][ T432] CPU: 2 UID: 0 PID: 432 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 28.997415][ T432] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 28.997595][ T432] Call Trace: [ 28.997704][ T432] [ 28.997781][ T432] dump_stack_lvl+0x82/0xd0 [ 28.997931][ T432] print_deadlock_bug+0x40a/0x650 [ 28.998077][ T432] validate_chain+0x5bf/0xae0 [ 28.998226][ T432] ? __pfx_validate_chain+0x10/0x10 [ 28.998376][ T432] ? hlock_class+0x4e/0x130 [ 28.998521][ T432] ? mark_lock+0x38/0x3e0 [ 28.998631][ T432] __lock_acquire+0xb9a/0x1680 [ 28.998784][ T432] lock_acquire.part.0+0xeb/0x330 [ 28.998929][ T432] ? blocking_notifier_call_chain+0x50/0x90 [ 28.999108][ T432] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 28.999288][ T432] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 28.999437][ T432] ? trace_lock_acquire+0x14c/0x1f0 [ 28.999583][ T432] ? lock_acquire+0x32/0xc0 [ 28.999729][ T432] ? blocking_notifier_call_chain+0x50/0x90 [ 28.999911][ T432] down_read+0x9f/0x340 [ 29.000023][ T432] ? blocking_notifier_call_chain+0x50/0x90 [ 29.000204][ T432] ? __pfx_down_read+0x10/0x10 [ 29.000348][ T432] ? __lock_release+0x103/0x460 [ 29.000496][ T432] ? netconsole_netdev_event+0x2c1/0x620 [ 29.000641][ T432] ? __pfx___lock_release+0x10/0x10 [ 29.000788][ T432] blocking_notifier_call_chain+0x50/0x90 [ 29.000933][ T432] __netdev_upper_dev_unlink+0xd9/0x220 [ 29.001077][ T432] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 29.001258][ T432] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 29.001407][ T432] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 29.001585][ T432] ? rtnl_is_locked+0x15/0x20 [ 29.001730][ T432] netdev_upper_dev_unlink+0x71/0xa0 [ 29.001874][ T432] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 29.002053][ T432] ? netconsole_netdev_event+0x2c1/0x620 [ 29.002198][ T432] ? mutex_is_locked+0x1c/0x60 [ 29.002342][ T432] ? rtnl_is_locked+0x15/0x20 [ 29.002492][ T432] ? netdev_master_upper_dev_get+0x13/0x120 [ 29.002672][ T432] vrf_device_event+0x78/0xe0 [vrf] [ 29.002821][ T432] notifier_call_chain+0xcd/0x150 [ 29.002967][ T432] blocking_notifier_call_chain+0x66/0x90 [ 29.003115][ T432] unregister_netdevice_many_notify+0xa7b/0x1580 [ 29.003294][ T432] ? __lock_release+0x103/0x460 [ 29.003476][ T432] ? __pfx___lock_release+0x10/0x10 [ 29.003655][ T432] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 29.003836][ T432] ? hlock_class+0x4e/0x130 [ 29.003982][ T432] ? mark_held_locks+0x9e/0xe0 [ 29.004126][ T432] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 29.004273][ T432] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 29.004454][ T432] rtnl_dellink+0x348/0xa40 [ 29.004601][ T432] ? __pfx_rtnl_dellink+0x10/0x10 [ 29.004767][ T432] ? find_held_lock+0x2c/0x110 [ 29.004917][ T432] ? __lock_release+0x103/0x460 [ 29.005060][ T432] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 29.005205][ T432] ? __pfx___lock_release+0x10/0x10 [ 29.005349][ T432] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 29.005497][ T432] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 29.005641][ T432] ? __pfx_rtnl_dellink+0x10/0x10 [ 29.005794][ T432] rtnetlink_rcv_msg+0x712/0xc10 [ 29.005938][ T432] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 29.006085][ T432] ? hlock_class+0x4e/0x130 [ 29.006227][ T432] ? mark_lock+0x38/0x3e0 [ 29.006338][ T432] ? __lock_acquire+0xb9a/0x1680 [ 29.006485][ T432] netlink_rcv_skb+0x130/0x360 [ 29.006631][ T432] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 29.006781][ T432] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 29.006931][ T432] ? netlink_deliver_tap+0x13e/0x340 [ 29.007077][ T432] ? netlink_deliver_tap+0xc3/0x340 [ 29.007224][ T432] netlink_unicast+0x44b/0x710 [ 29.007370][ T432] ? __pfx_netlink_unicast+0x10/0x10 [ 29.007513][ T432] ? find_held_lock+0x2c/0x110 [ 29.007660][ T432] netlink_sendmsg+0x723/0xbe0 [ 29.007809][ T432] ? __pfx_netlink_sendmsg+0x10/0x10 [ 29.007956][ T432] ____sys_sendmsg+0x7ac/0xa10 [ 29.008102][ T432] ? __pfx_____sys_sendmsg+0x10/0x10 [ 29.008245][ T432] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 29.008431][ T432] ___sys_sendmsg+0xee/0x170 [ 29.008575][ T432] ? __pfx____sys_sendmsg+0x10/0x10 [ 29.008720][ T432] ? kasan_save_stack+0x34/0x50 [ 29.008871][ T432] ? kasan_save_stack+0x24/0x50 [ 29.009016][ T432] ? __kasan_record_aux_stack+0x8e/0xa0 [ 29.009161][ T432] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 29.009342][ T432] ? __x64_sys_close+0x7c/0xd0 [ 29.009487][ T432] ? do_syscall_64+0xc1/0x1d0 [ 29.009632][ T432] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 29.009814][ T432] ? __lock_acquire+0xb9a/0x1680 [ 29.009961][ T432] ? find_held_lock+0x2c/0x110 [ 29.010111][ T432] ? __lock_release+0x103/0x460 [ 29.010255][ T432] ? __virt_addr_valid+0x22b/0x430 [ 29.010401][ T432] ? __pfx___lock_release+0x10/0x10 [ 29.010545][ T432] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 29.010693][ T432] __sys_sendmsg+0x109/0x1a0 [ 29.010837][ T432] ? __pfx___sys_sendmsg+0x10/0x10 [ 29.010981][ T432] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 29.011168][ T432] do_syscall_64+0xc1/0x1d0 [ 29.011314][ T432] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 29.011493][ T432] RIP: 0033:0x7f20854549a7 [ 29.011644][ T432] 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 [ 29.012157][ T432] RSP: 002b:00007fffa7df2878 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 29.012377][ T432] RAX: ffffffffffffffda RBX: 00007fffa7df2fa0 RCX: 00007f20854549a7 [ 29.012596][ T432] RDX: 0000000000000000 RSI: 00007fffa7df28e0 RDI: 0000000000000005 [ 29.012812][ T432] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 29.013035][ T432] R10: 00007f2085312ef8 R11: 0000000000000246 R12: 0000000000000002 [ 29.013253][ T432] R13: 00000000677904dc R14: 0000000000498600 R15: 0000000000000000 [ 29.013482][ T432]