[ 15.826605][ T324] gre: GRE over IPv4 demultiplexor driver [ 15.839586][ T324] ip_gre: GRE over IPv4 tunneling driver [ 17.545240][ T347] 8021q: 802.1Q VLAN Support v1.8 [ 20.514040][ T386] GACT probability NOT on [ 1149.059351][T17310] [ 1149.059493][T17310] ============================================ [ 1149.059686][T17310] WARNING: possible recursive locking detected [ 1149.059874][T17310] 6.13.0-rc5-virtme #1 Not tainted [ 1149.060029][T17310] -------------------------------------------- [ 1149.060216][T17310] ip/17310 is trying to acquire lock: [ 1149.060368][T17310] ffffffffac7d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 1149.060702][T17310] [ 1149.060702][T17310] but task is already holding lock: [ 1149.060935][T17310] ffffffffac7d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 1149.061238][T17310] [ 1149.061238][T17310] other info that might help us debug this: [ 1149.061461][T17310] Possible unsafe locking scenario: [ 1149.061461][T17310] [ 1149.061707][T17310] CPU0 [ 1149.061823][T17310] ---- [ 1149.061934][T17310] lock((netdev_chain).rwsem); [ 1149.062089][T17310] lock((netdev_chain).rwsem); [ 1149.062236][T17310] [ 1149.062236][T17310] *** DEADLOCK *** [ 1149.062236][T17310] [ 1149.062471][T17310] May be due to missing lock nesting notation [ 1149.062471][T17310] [ 1149.062701][T17310] 2 locks held by ip/17310: [ 1149.062855][T17310] #0: ffffffffac7e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 1149.063127][T17310] #1: ffffffffac7d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 1149.063433][T17310] [ 1149.063433][T17310] stack backtrace: [ 1149.063617][T17310] CPU: 3 UID: 0 PID: 17310 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 1149.063849][T17310] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1149.064047][T17310] Call Trace: [ 1149.064159][T17310] [ 1149.064242][T17310] dump_stack_lvl+0x82/0xd0 [ 1149.064398][T17310] print_deadlock_bug+0x40a/0x650 [ 1149.064551][T17310] validate_chain+0x5bf/0xae0 [ 1149.064708][T17310] ? __pfx_validate_chain+0x10/0x10 [ 1149.064863][T17310] ? hlock_class+0x4e/0x130 [ 1149.065010][T17310] ? mark_lock+0x38/0x3e0 [ 1149.065135][T17310] __lock_acquire+0xb9a/0x1680 [ 1149.065290][T17310] lock_acquire.part.0+0xeb/0x330 [ 1149.065439][T17310] ? blocking_notifier_call_chain+0x50/0x90 [ 1149.065631][T17310] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 1149.065822][T17310] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1149.065973][T17310] ? trace_lock_acquire+0x14c/0x1f0 [ 1149.066124][T17310] ? lock_acquire+0x32/0xc0 [ 1149.066278][T17310] ? blocking_notifier_call_chain+0x50/0x90 [ 1149.066465][T17310] down_read+0x9f/0x340 [ 1149.066586][T17310] ? blocking_notifier_call_chain+0x50/0x90 [ 1149.066779][T17310] ? __pfx_down_read+0x10/0x10 [ 1149.066932][T17310] ? __lock_release+0x103/0x460 [ 1149.067079][T17310] ? netconsole_netdev_event+0x2c1/0x620 [ 1149.067226][T17310] ? __pfx___lock_release+0x10/0x10 [ 1149.067382][T17310] blocking_notifier_call_chain+0x50/0x90 [ 1149.067535][T17310] __netdev_upper_dev_unlink+0xd9/0x220 [ 1149.067682][T17310] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 1149.067874][T17310] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 1149.068028][T17310] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 1149.068218][T17310] ? rtnl_is_locked+0x15/0x20 [ 1149.068367][T17310] netdev_upper_dev_unlink+0x71/0xa0 [ 1149.068528][T17310] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 1149.068719][T17310] ? netconsole_netdev_event+0x2c1/0x620 [ 1149.068872][T17310] ? mutex_is_locked+0x1c/0x60 [ 1149.069025][T17310] ? rtnl_is_locked+0x15/0x20 [ 1149.069171][T17310] ? netdev_master_upper_dev_get+0x13/0x120 [ 1149.069369][T17310] vrf_device_event+0x78/0xe0 [vrf] [ 1149.069526][T17310] notifier_call_chain+0xcd/0x150 [ 1149.069689][T17310] blocking_notifier_call_chain+0x66/0x90 [ 1149.069847][T17310] unregister_netdevice_many_notify+0xa7b/0x1580 [ 1149.070033][T17310] ? hlock_class+0x4e/0x130 [ 1149.070184][T17310] ? mark_lock+0x38/0x3e0 [ 1149.070301][T17310] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 1149.070493][T17310] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 1149.070687][T17310] ? kfree+0xf3/0x330 [ 1149.070804][T17310] ? vlan_vid_del+0x310/0x5e0 [ 1149.070963][T17310] ? vlan_vid_del+0x310/0x5e0 [ 1149.071119][T17310] rtnl_dellink+0x348/0xa40 [ 1149.071282][T17310] ? __pfx_rtnl_dellink+0x10/0x10 [ 1149.071458][T17310] ? find_held_lock+0x2c/0x110 [ 1149.071609][T17310] ? __lock_release+0x103/0x460 [ 1149.071757][T17310] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 1149.071932][T17310] ? __pfx___lock_release+0x10/0x10 [ 1149.072080][T17310] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1149.072228][T17310] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 1149.072381][T17310] ? __pfx_rtnl_dellink+0x10/0x10 [ 1149.072533][T17310] rtnetlink_rcv_msg+0x712/0xc10 [ 1149.072684][T17310] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 1149.072833][T17310] ? hlock_class+0x4e/0x130 [ 1149.072991][T17310] ? mark_lock+0x38/0x3e0 [ 1149.073105][T17310] ? __lock_acquire+0xb9a/0x1680 [ 1149.073259][T17310] netlink_rcv_skb+0x130/0x360 [ 1149.073406][T17310] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 1149.073558][T17310] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 1149.073710][T17310] ? netlink_deliver_tap+0x13e/0x340 [ 1149.073865][T17310] ? netlink_deliver_tap+0xc3/0x340 [ 1149.074018][T17310] netlink_unicast+0x44b/0x710 [ 1149.074194][T17310] ? __pfx_netlink_unicast+0x10/0x10 [ 1149.074341][T17310] ? find_held_lock+0x2c/0x110 [ 1149.074499][T17310] netlink_sendmsg+0x723/0xbe0 [ 1149.074656][T17310] ? __pfx_netlink_sendmsg+0x10/0x10 [ 1149.074817][T17310] ____sys_sendmsg+0x7ac/0xa10 [ 1149.074973][T17310] ? __pfx_____sys_sendmsg+0x10/0x10 [ 1149.075118][T17310] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 1149.075309][T17310] ___sys_sendmsg+0xee/0x170 [ 1149.075458][T17310] ? __pfx____sys_sendmsg+0x10/0x10 [ 1149.075608][T17310] ? kasan_save_stack+0x34/0x50 [ 1149.075763][T17310] ? kasan_save_stack+0x24/0x50 [ 1149.075909][T17310] ? __kasan_record_aux_stack+0x8e/0xa0 [ 1149.076058][T17310] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 1149.076244][T17310] ? __x64_sys_close+0x7c/0xd0 [ 1149.076405][T17310] ? do_syscall_64+0xc1/0x1d0 [ 1149.076553][T17310] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1149.076755][T17310] ? __lock_acquire+0xb9a/0x1680 [ 1149.076910][T17310] ? find_held_lock+0x2c/0x110 [ 1149.077074][T17310] ? __lock_release+0x103/0x460 [ 1149.077221][T17310] ? __virt_addr_valid+0x22b/0x430 [ 1149.077377][T17310] ? __pfx___lock_release+0x10/0x10 [ 1149.077527][T17310] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1149.077680][T17310] __sys_sendmsg+0x109/0x1a0 [ 1149.077830][T17310] ? __pfx___sys_sendmsg+0x10/0x10 [ 1149.077996][T17310] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 1149.078188][T17310] do_syscall_64+0xc1/0x1d0 [ 1149.078336][T17310] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1149.078519][T17310] RIP: 0033:0x7f68105b89a7 [ 1149.078688][T17310] 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 [ 1149.079237][T17310] RSP: 002b:00007fff19014838 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1149.079468][T17310] RAX: ffffffffffffffda RBX: 00007fff19014f60 RCX: 00007f68105b89a7 [ 1149.079705][T17310] RDX: 0000000000000000 RSI: 00007fff190148a0 RDI: 0000000000000005 [ 1149.079929][T17310] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 1149.080149][T17310] R10: 00007f6810476ef8 R11: 0000000000000246 R12: 0000000000000002 [ 1149.080370][T17310] R13: 00000000677932d0 R14: 0000000000498600 R15: 0000000000000000 [ 1149.080599][T17310] [ 1149.095299][T17310] ip (17310) used greatest stack depth: 23496 bytes left