[ 16.172394][ T335] 8021q: 802.1Q VLAN Support v1.8 [ 16.600579][ T340] gre: GRE over IPv4 demultiplexor driver [ 16.644516][ T340] ip6_gre: GRE over IPv6 tunneling driver [ 26.060443][ T415] GACT probability NOT on [ 43.391952][ T632] [ 43.392092][ T632] ============================================ [ 43.392288][ T632] WARNING: possible recursive locking detected [ 43.392470][ T632] 6.13.0-rc5-virtme #1 Not tainted [ 43.392622][ T632] -------------------------------------------- [ 43.392806][ T632] ip/632 is trying to acquire lock: [ 43.392956][ T632] ffffffff931d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 43.393267][ T632] [ 43.393267][ T632] but task is already holding lock: [ 43.393484][ T632] ffffffff931d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 43.393807][ T632] [ 43.393807][ T632] other info that might help us debug this: [ 43.394028][ T632] Possible unsafe locking scenario: [ 43.394028][ T632] [ 43.394247][ T632] CPU0 [ 43.394357][ T632] ---- [ 43.394465][ T632] lock((netdev_chain).rwsem); [ 43.394616][ T632] lock((netdev_chain).rwsem); [ 43.394765][ T632] [ 43.394765][ T632] *** DEADLOCK *** [ 43.394765][ T632] [ 43.394977][ T632] May be due to missing lock nesting notation [ 43.394977][ T632] [ 43.395195][ T632] 2 locks held by ip/632: [ 43.395306][ T632] #0: ffffffff931e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 43.395573][ T632] #1: ffffffff931d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 43.395880][ T632] [ 43.395880][ T632] stack backtrace: [ 43.396065][ T632] CPU: 0 UID: 0 PID: 632 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 43.396296][ T632] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 43.396494][ T632] Call Trace: [ 43.396608][ T632] [ 43.396690][ T632] dump_stack_lvl+0x82/0xd0 [ 43.396843][ T632] print_deadlock_bug+0x40a/0x650 [ 43.396993][ T632] validate_chain+0x5bf/0xae0 [ 43.397146][ T632] ? __pfx_validate_chain+0x10/0x10 [ 43.397295][ T632] ? hlock_class+0x4e/0x130 [ 43.397443][ T632] ? mark_lock+0x38/0x3e0 [ 43.397559][ T632] __lock_acquire+0xb9a/0x1680 [ 43.397709][ T632] lock_acquire.part.0+0xeb/0x330 [ 43.397864][ T632] ? blocking_notifier_call_chain+0x50/0x90 [ 43.398048][ T632] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 43.398251][ T632] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 43.398407][ T632] ? trace_lock_acquire+0x14c/0x1f0 [ 43.398554][ T632] ? lock_acquire+0x32/0xc0 [ 43.398700][ T632] ? blocking_notifier_call_chain+0x50/0x90 [ 43.398885][ T632] down_read+0x9f/0x340 [ 43.399003][ T632] ? blocking_notifier_call_chain+0x50/0x90 [ 43.399194][ T632] ? __pfx_down_read+0x10/0x10 [ 43.399342][ T632] ? __lock_release+0x103/0x460 [ 43.399489][ T632] ? netconsole_netdev_event+0x2c1/0x620 [ 43.399637][ T632] ? __pfx___lock_release+0x10/0x10 [ 43.399785][ T632] blocking_notifier_call_chain+0x50/0x90 [ 43.399935][ T632] __netdev_upper_dev_unlink+0xd9/0x220 [ 43.400122][ T632] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 43.400323][ T632] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 43.400469][ T632] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 43.400654][ T632] ? rtnl_is_locked+0x15/0x20 [ 43.400804][ T632] netdev_upper_dev_unlink+0x71/0xa0 [ 43.400950][ T632] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 43.401139][ T632] ? netconsole_netdev_event+0x2c1/0x620 [ 43.401289][ T632] ? mutex_is_locked+0x1c/0x60 [ 43.401436][ T632] ? rtnl_is_locked+0x15/0x20 [ 43.401582][ T632] ? netdev_master_upper_dev_get+0x13/0x120 [ 43.401768][ T632] vrf_device_event+0x78/0xe0 [vrf] [ 43.401919][ T632] notifier_call_chain+0xcd/0x150 [ 43.402069][ T632] blocking_notifier_call_chain+0x66/0x90 [ 43.402222][ T632] unregister_netdevice_many_notify+0xa7b/0x1580 [ 43.402409][ T632] ? __lock_release+0x103/0x460 [ 43.402559][ T632] ? __pfx___lock_release+0x10/0x10 [ 43.402711][ T632] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 43.402895][ T632] ? hlock_class+0x4e/0x130 [ 43.403044][ T632] ? mark_held_locks+0x9e/0xe0 [ 43.403198][ T632] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 43.403356][ T632] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 43.403543][ T632] rtnl_dellink+0x348/0xa40 [ 43.403715][ T632] ? __pfx_rtnl_dellink+0x10/0x10 [ 43.403879][ T632] ? find_held_lock+0x2c/0x110 [ 43.404029][ T632] ? __lock_release+0x103/0x460 [ 43.404179][ T632] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 43.404326][ T632] ? __pfx___lock_release+0x10/0x10 [ 43.404481][ T632] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 43.404632][ T632] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 43.404783][ T632] ? __pfx_rtnl_dellink+0x10/0x10 [ 43.404932][ T632] rtnetlink_rcv_msg+0x712/0xc10 [ 43.405080][ T632] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 43.405229][ T632] ? hlock_class+0x4e/0x130 [ 43.405377][ T632] ? mark_lock+0x38/0x3e0 [ 43.405497][ T632] ? __lock_acquire+0xb9a/0x1680 [ 43.405645][ T632] netlink_rcv_skb+0x130/0x360 [ 43.405793][ T632] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 43.405942][ T632] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 43.406095][ T632] ? netlink_deliver_tap+0x13e/0x340 [ 43.406246][ T632] ? netlink_deliver_tap+0xc3/0x340 [ 43.406394][ T632] netlink_unicast+0x44b/0x710 [ 43.406546][ T632] ? __pfx_netlink_unicast+0x10/0x10 [ 43.406693][ T632] ? find_held_lock+0x2c/0x110 [ 43.406845][ T632] netlink_sendmsg+0x723/0xbe0 [ 43.406994][ T632] ? __pfx_netlink_sendmsg+0x10/0x10 [ 43.407152][ T632] ____sys_sendmsg+0x7ac/0xa10 [ 43.407304][ T632] ? __pfx_____sys_sendmsg+0x10/0x10 [ 43.407452][ T632] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 43.407649][ T632] ___sys_sendmsg+0xee/0x170 [ 43.407800][ T632] ? __pfx____sys_sendmsg+0x10/0x10 [ 43.407949][ T632] ? kasan_save_stack+0x34/0x50 [ 43.408099][ T632] ? kasan_save_stack+0x24/0x50 [ 43.408248][ T632] ? __kasan_record_aux_stack+0x8e/0xa0 [ 43.408398][ T632] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 43.408584][ T632] ? __x64_sys_close+0x7c/0xd0 [ 43.408732][ T632] ? do_syscall_64+0xc1/0x1d0 [ 43.408882][ T632] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 43.409068][ T632] ? __lock_acquire+0xb9a/0x1680 [ 43.409217][ T632] ? find_held_lock+0x2c/0x110 [ 43.409366][ T632] ? __lock_release+0x103/0x460 [ 43.409512][ T632] ? __virt_addr_valid+0x22b/0x430 [ 43.409662][ T632] ? __pfx___lock_release+0x10/0x10 [ 43.409809][ T632] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 43.409965][ T632] __sys_sendmsg+0x109/0x1a0 [ 43.410112][ T632] ? __pfx___sys_sendmsg+0x10/0x10 [ 43.410261][ T632] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 43.410449][ T632] do_syscall_64+0xc1/0x1d0 [ 43.410596][ T632] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 43.410780][ T632] RIP: 0033:0x7fdb5c9eb9a7 [ 43.410937][ T632] 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 [ 43.411458][ T632] RSP: 002b:00007ffe159c6428 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 43.411680][ T632] RAX: ffffffffffffffda RBX: 00007ffe159c6b50 RCX: 00007fdb5c9eb9a7 [ 43.411900][ T632] RDX: 0000000000000000 RSI: 00007ffe159c6490 RDI: 0000000000000005 [ 43.412128][ T632] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 43.412350][ T632] R10: 00007fdb5c8a9ef8 R11: 0000000000000246 R12: 0000000000000002 [ 43.412572][ T632] R13: 0000000067795413 R14: 0000000000498600 R15: 0000000000000000 [ 43.412797][ T632]