[ 14.172425][ T307] 8021q: 802.1Q VLAN Support v1.8 [ 14.985355][ T318] gre: GRE over IPv4 demultiplexor driver [ 15.008698][ T318] ip_gre: GRE over IPv4 tunneling driver [ 19.451429][ T375] GACT probability NOT on [ 54.914445][ T546] [ 54.914583][ T546] ============================================ [ 54.914787][ T546] WARNING: possible recursive locking detected [ 54.914965][ T546] 6.13.0-rc5-virtme #1 Not tainted [ 54.915124][ T546] -------------------------------------------- [ 54.915301][ T546] ip/546 is trying to acquire lock: [ 54.915451][ T546] ffffffffbc9d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 54.915763][ T546] [ 54.915763][ T546] but task is already holding lock: [ 54.915978][ T546] ffffffffbc9d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 54.916270][ T546] [ 54.916270][ T546] other info that might help us debug this: [ 54.916483][ T546] Possible unsafe locking scenario: [ 54.916483][ T546] [ 54.916814][ T546] CPU0 [ 54.916923][ T546] ---- [ 54.917039][ T546] lock((netdev_chain).rwsem); [ 54.917192][ T546] lock((netdev_chain).rwsem); [ 54.917351][ T546] [ 54.917351][ T546] *** DEADLOCK *** [ 54.917351][ T546] [ 54.917587][ T546] May be due to missing lock nesting notation [ 54.917587][ T546] [ 54.917806][ T546] 2 locks held by ip/546: [ 54.917939][ T546] #0: ffffffffbc9e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 54.918211][ T546] #1: ffffffffbc9d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 54.918512][ T546] [ 54.918512][ T546] stack backtrace: [ 54.918700][ T546] CPU: 0 UID: 0 PID: 546 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 54.918919][ T546] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 54.919104][ T546] Call Trace: [ 54.919217][ T546] [ 54.919302][ T546] dump_stack_lvl+0x82/0xd0 [ 54.919477][ T546] print_deadlock_bug+0x40a/0x650 [ 54.919642][ T546] validate_chain+0x5bf/0xae0 [ 54.919805][ T546] ? __pfx_validate_chain+0x10/0x10 [ 54.919966][ T546] ? hlock_class+0x4e/0x130 [ 54.920125][ T546] ? mark_lock+0x38/0x3e0 [ 54.920237][ T546] __lock_acquire+0xb9a/0x1680 [ 54.920387][ T546] lock_acquire.part.0+0xeb/0x330 [ 54.920539][ T546] ? blocking_notifier_call_chain+0x50/0x90 [ 54.920722][ T546] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 54.920914][ T546] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 54.921072][ T546] ? trace_lock_acquire+0x14c/0x1f0 [ 54.921237][ T546] ? lock_acquire+0x32/0xc0 [ 54.921386][ T546] ? blocking_notifier_call_chain+0x50/0x90 [ 54.921568][ T546] down_read+0x9f/0x340 [ 54.921684][ T546] ? blocking_notifier_call_chain+0x50/0x90 [ 54.921867][ T546] ? __pfx_down_read+0x10/0x10 [ 54.922010][ T546] ? __lock_release+0x103/0x460 [ 54.922153][ T546] ? netconsole_netdev_event+0x2c1/0x620 [ 54.922301][ T546] ? __pfx___lock_release+0x10/0x10 [ 54.922453][ T546] blocking_notifier_call_chain+0x50/0x90 [ 54.922598][ T546] __netdev_upper_dev_unlink+0xd9/0x220 [ 54.922750][ T546] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 54.922931][ T546] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 54.923079][ T546] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 54.923258][ T546] ? rtnl_is_locked+0x15/0x20 [ 54.923417][ T546] netdev_upper_dev_unlink+0x71/0xa0 [ 54.923579][ T546] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 54.923777][ T546] ? netconsole_netdev_event+0x2c1/0x620 [ 54.923923][ T546] ? mutex_is_locked+0x1c/0x60 [ 54.924070][ T546] ? rtnl_is_locked+0x15/0x20 [ 54.924216][ T546] ? netdev_master_upper_dev_get+0x13/0x120 [ 54.924400][ T546] vrf_device_event+0x78/0xe0 [vrf] [ 54.924550][ T546] notifier_call_chain+0xcd/0x150 [ 54.924738][ T546] blocking_notifier_call_chain+0x66/0x90 [ 54.924901][ T546] unregister_netdevice_many_notify+0xa7b/0x1580 [ 54.925083][ T546] ? hlock_class+0x4e/0x130 [ 54.925229][ T546] ? mark_lock+0x38/0x3e0 [ 54.925348][ T546] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 54.925530][ T546] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 54.925714][ T546] ? kfree+0xf3/0x330 [ 54.925826][ T546] ? vlan_vid_del+0x310/0x5e0 [ 54.925986][ T546] ? vlan_vid_del+0x310/0x5e0 [ 54.926134][ T546] rtnl_dellink+0x348/0xa40 [ 54.926282][ T546] ? __pfx_rtnl_dellink+0x10/0x10 [ 54.926441][ T546] ? find_held_lock+0x2c/0x110 [ 54.926590][ T546] ? __lock_release+0x103/0x460 [ 54.926736][ T546] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 54.926893][ T546] ? __pfx___lock_release+0x10/0x10 [ 54.927052][ T546] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 54.927221][ T546] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 54.927379][ T546] ? __pfx_rtnl_dellink+0x10/0x10 [ 54.927540][ T546] rtnetlink_rcv_msg+0x712/0xc10 [ 54.927700][ T546] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 54.927861][ T546] ? hlock_class+0x4e/0x130 [ 54.928023][ T546] ? mark_lock+0x38/0x3e0 [ 54.928147][ T546] ? __lock_acquire+0xb9a/0x1680 [ 54.928315][ T546] netlink_rcv_skb+0x130/0x360 [ 54.928478][ T546] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 54.928638][ T546] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 54.928800][ T546] ? netlink_deliver_tap+0x13e/0x340 [ 54.928965][ T546] ? netlink_deliver_tap+0xc3/0x340 [ 54.929128][ T546] netlink_unicast+0x44b/0x710 [ 54.929289][ T546] ? __pfx_netlink_unicast+0x10/0x10 [ 54.929453][ T546] ? find_held_lock+0x2c/0x110 [ 54.929616][ T546] netlink_sendmsg+0x723/0xbe0 [ 54.929778][ T546] ? __pfx_netlink_sendmsg+0x10/0x10 [ 54.929940][ T546] ____sys_sendmsg+0x7ac/0xa10 [ 54.930100][ T546] ? __pfx_____sys_sendmsg+0x10/0x10 [ 54.930260][ T546] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 54.930461][ T546] ___sys_sendmsg+0xee/0x170 [ 54.930627][ T546] ? __pfx____sys_sendmsg+0x10/0x10 [ 54.930788][ T546] ? kasan_save_stack+0x34/0x50 [ 54.930949][ T546] ? kasan_save_stack+0x24/0x50 [ 54.931110][ T546] ? __kasan_record_aux_stack+0x8e/0xa0 [ 54.931272][ T546] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 54.931473][ T546] ? __x64_sys_close+0x7c/0xd0 [ 54.931626][ T546] ? do_syscall_64+0xc1/0x1d0 [ 54.931776][ T546] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 54.931964][ T546] ? __lock_acquire+0xb9a/0x1680 [ 54.932114][ T546] ? find_held_lock+0x2c/0x110 [ 54.932264][ T546] ? __lock_release+0x103/0x460 [ 54.932416][ T546] ? __virt_addr_valid+0x22b/0x430 [ 54.932563][ T546] ? __pfx___lock_release+0x10/0x10 [ 54.932708][ T546] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 54.932856][ T546] __sys_sendmsg+0x109/0x1a0 [ 54.933010][ T546] ? __pfx___sys_sendmsg+0x10/0x10 [ 54.933155][ T546] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 54.933349][ T546] do_syscall_64+0xc1/0x1d0 [ 54.933500][ T546] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 54.933681][ T546] RIP: 0033:0x7fc4388b99a7 [ 54.933835][ T546] 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 [ 54.934384][ T546] RSP: 002b:00007ffd8c693f68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 54.934619][ T546] RAX: ffffffffffffffda RBX: 00007ffd8c694690 RCX: 00007fc4388b99a7 [ 54.934851][ T546] RDX: 0000000000000000 RSI: 00007ffd8c693fd0 RDI: 0000000000000005 [ 54.935105][ T546] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 54.935340][ T546] R10: 00007fc438777ef8 R11: 0000000000000246 R12: 0000000000000002 [ 54.935562][ T546] R13: 0000000067795720 R14: 0000000000498600 R15: 0000000000000000 [ 54.935787][ T546] [ 54.968404][ T546] ip (546) used greatest stack depth: 23408 bytes left