[ 19.238457][ T310] GACT probability NOT on [ 36.564846][ T708] 8021q: 802.1Q VLAN Support v1.8 [ 38.150646][ T731] [ 38.150872][ T731] ============================================ [ 38.151059][ T731] WARNING: possible recursive locking detected [ 38.151242][ T731] 6.13.0-rc5-virtme #1 Not tainted [ 38.151392][ T731] -------------------------------------------- [ 38.151581][ T731] ip/731 is trying to acquire lock: [ 38.151729][ T731] ffffffff8ffd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 38.152040][ T731] [ 38.152040][ T731] but task is already holding lock: [ 38.152255][ T731] ffffffff8ffd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 38.152556][ T731] [ 38.152556][ T731] other info that might help us debug this: [ 38.152794][ T731] Possible unsafe locking scenario: [ 38.152794][ T731] [ 38.153019][ T731] CPU0 [ 38.153137][ T731] ---- [ 38.153265][ T731] lock((netdev_chain).rwsem); [ 38.153424][ T731] lock((netdev_chain).rwsem); [ 38.153579][ T731] [ 38.153579][ T731] *** DEADLOCK *** [ 38.153579][ T731] [ 38.153808][ T731] May be due to missing lock nesting notation [ 38.153808][ T731] [ 38.154043][ T731] 2 locks held by ip/731: [ 38.154160][ T731] #0: ffffffff8ffe7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 38.154444][ T731] #1: ffffffff8ffd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 38.154762][ T731] [ 38.154762][ T731] stack backtrace: [ 38.154941][ T731] CPU: 2 UID: 0 PID: 731 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 38.155161][ T731] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 38.155341][ T731] Call Trace: [ 38.155455][ T731] [ 38.155533][ T731] dump_stack_lvl+0x82/0xd0 [ 38.155687][ T731] print_deadlock_bug+0x40a/0x650 [ 38.155841][ T731] validate_chain+0x5bf/0xae0 [ 38.155986][ T731] ? __pfx_validate_chain+0x10/0x10 [ 38.156133][ T731] ? hlock_class+0x4e/0x130 [ 38.156280][ T731] ? mark_lock+0x38/0x3e0 [ 38.156392][ T731] __lock_acquire+0xb9a/0x1680 [ 38.156539][ T731] lock_acquire.part.0+0xeb/0x330 [ 38.156683][ T731] ? blocking_notifier_call_chain+0x50/0x90 [ 38.156868][ T731] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 38.157053][ T731] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 38.157197][ T731] ? trace_lock_acquire+0x14c/0x1f0 [ 38.157344][ T731] ? lock_acquire+0x32/0xc0 [ 38.157492][ T731] ? blocking_notifier_call_chain+0x50/0x90 [ 38.157677][ T731] down_read+0x9f/0x340 [ 38.157789][ T731] ? blocking_notifier_call_chain+0x50/0x90 [ 38.157985][ T731] ? __pfx_down_read+0x10/0x10 [ 38.158132][ T731] ? __lock_release+0x103/0x460 [ 38.158276][ T731] ? netconsole_netdev_event+0x2c1/0x620 [ 38.158422][ T731] ? __pfx___lock_release+0x10/0x10 [ 38.158569][ T731] blocking_notifier_call_chain+0x50/0x90 [ 38.158718][ T731] __netdev_upper_dev_unlink+0xd9/0x220 [ 38.158866][ T731] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 38.159050][ T731] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 38.159209][ T731] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 38.159391][ T731] ? rtnl_is_locked+0x15/0x20 [ 38.159542][ T731] netdev_upper_dev_unlink+0x71/0xa0 [ 38.159685][ T731] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 38.159866][ T731] ? netconsole_netdev_event+0x2c1/0x620 [ 38.160022][ T731] ? mutex_is_locked+0x1c/0x60 [ 38.160169][ T731] ? rtnl_is_locked+0x15/0x20 [ 38.160313][ T731] ? netdev_master_upper_dev_get+0x13/0x120 [ 38.160494][ T731] vrf_device_event+0x78/0xe0 [vrf] [ 38.160675][ T731] notifier_call_chain+0xcd/0x150 [ 38.160822][ T731] blocking_notifier_call_chain+0x66/0x90 [ 38.160968][ T731] unregister_netdevice_many_notify+0xa7b/0x1580 [ 38.161155][ T731] ? __lock_release+0x103/0x460 [ 38.161301][ T731] ? __pfx___lock_release+0x10/0x10 [ 38.161449][ T731] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 38.161632][ T731] ? hlock_class+0x4e/0x130 [ 38.161780][ T731] ? mark_held_locks+0x9e/0xe0 [ 38.161934][ T731] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 38.162098][ T731] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 38.162311][ T731] rtnl_dellink+0x348/0xa40 [ 38.162471][ T731] ? __pfx_rtnl_dellink+0x10/0x10 [ 38.162644][ T731] ? find_held_lock+0x2c/0x110 [ 38.162801][ T731] ? __lock_release+0x103/0x460 [ 38.162955][ T731] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 38.163116][ T731] ? __pfx___lock_release+0x10/0x10 [ 38.163264][ T731] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 38.163419][ T731] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 38.163568][ T731] ? __pfx_rtnl_dellink+0x10/0x10 [ 38.163717][ T731] rtnetlink_rcv_msg+0x712/0xc10 [ 38.163878][ T731] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 38.164027][ T731] ? hlock_class+0x4e/0x130 [ 38.164176][ T731] ? mark_lock+0x38/0x3e0 [ 38.164289][ T731] ? __lock_acquire+0xb9a/0x1680 [ 38.164442][ T731] netlink_rcv_skb+0x130/0x360 [ 38.164625][ T731] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 38.164798][ T731] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 38.164975][ T731] ? netlink_deliver_tap+0x13e/0x340 [ 38.165140][ T731] ? netlink_deliver_tap+0xc3/0x340 [ 38.165302][ T731] netlink_unicast+0x44b/0x710 [ 38.165465][ T731] ? __pfx_netlink_unicast+0x10/0x10 [ 38.165638][ T731] ? find_held_lock+0x2c/0x110 [ 38.165794][ T731] netlink_sendmsg+0x723/0xbe0 [ 38.165943][ T731] ? __pfx_netlink_sendmsg+0x10/0x10 [ 38.166094][ T731] ____sys_sendmsg+0x7ac/0xa10 [ 38.166242][ T731] ? __pfx_____sys_sendmsg+0x10/0x10 [ 38.166388][ T731] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 38.166575][ T731] ___sys_sendmsg+0xee/0x170 [ 38.166723][ T731] ? __pfx____sys_sendmsg+0x10/0x10 [ 38.166875][ T731] ? kasan_save_stack+0x34/0x50 [ 38.167025][ T731] ? kasan_save_stack+0x24/0x50 [ 38.167169][ T731] ? __kasan_record_aux_stack+0x8e/0xa0 [ 38.167319][ T731] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 38.167501][ T731] ? __x64_sys_close+0x7c/0xd0 [ 38.167649][ T731] ? do_syscall_64+0xc1/0x1d0 [ 38.167798][ T731] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 38.167989][ T731] ? __lock_acquire+0xb9a/0x1680 [ 38.168136][ T731] ? find_held_lock+0x2c/0x110 [ 38.168286][ T731] ? __lock_release+0x103/0x460 [ 38.168433][ T731] ? __virt_addr_valid+0x22b/0x430 [ 38.168581][ T731] ? __pfx___lock_release+0x10/0x10 [ 38.168728][ T731] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 38.168880][ T731] __sys_sendmsg+0x109/0x1a0 [ 38.169039][ T731] ? __pfx___sys_sendmsg+0x10/0x10 [ 38.169188][ T731] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 38.169375][ T731] do_syscall_64+0xc1/0x1d0 [ 38.169527][ T731] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 38.169718][ T731] RIP: 0033:0x7f9544f789a7 [ 38.169885][ T731] 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 [ 38.170431][ T731] RSP: 002b:00007ffc7ae883d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 38.170667][ T731] RAX: ffffffffffffffda RBX: 00007ffc7ae88b00 RCX: 00007f9544f789a7 [ 38.170900][ T731] RDX: 0000000000000000 RSI: 00007ffc7ae88440 RDI: 0000000000000005 [ 38.171127][ T731] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 38.171349][ T731] R10: 00007f9544e36ef8 R11: 0000000000000246 R12: 0000000000000002 [ 38.171598][ T731] R13: 00000000677956ad R14: 0000000000498600 R15: 0000000000000000 [ 38.171835][ T731] [ 38.195451][ T731] ip (731) used greatest stack depth: 23880 bytes left