[ 13.106822][ T252] ip (252) used greatest stack depth: 24176 bytes left [ 13.308477][ T255] ip (255) used greatest stack depth: 23736 bytes left [ 13.473594][ T257] br0: port 1(s0) entered blocking state [ 13.473974][ T257] br0: port 1(s0) entered disabled state [ 13.474345][ T257] s0: entered allmulticast mode [ 13.475701][ T257] s0: entered promiscuous mode [ 13.589095][ T258] bond0: (slave eth0): making interface the new active one [ 13.589950][ T258] bond0: (slave eth0): Enslaving as an active interface with an up link [ 13.592191][ T45] br0: port 1(s0) entered blocking state [ 13.592456][ T45] br0: port 1(s0) entered forwarding state [ 14.032903][ T263] br0: port 2(s1) entered blocking state [ 14.033135][ T263] br0: port 2(s1) entered disabled state [ 14.033781][ T263] s1: entered allmulticast mode [ 14.035073][ T263] s1: entered promiscuous mode [ 14.157543][ T264] bond0: (slave eth1): Enslaving as a backup interface with an up link [ 14.158738][ T45] br0: port 2(s1) entered blocking state [ 14.158954][ T45] br0: port 2(s1) entered forwarding state [ 15.041507][ T272] br0: port 3(c0) entered blocking state [ 15.041792][ T272] br0: port 3(c0) entered disabled state [ 15.042047][ T272] c0: entered allmulticast mode [ 15.043710][ T272] c0: entered promiscuous mode [ 15.154861][ T45] br0: port 3(c0) entered blocking state [ 15.155081][ T45] br0: port 3(c0) entered forwarding state [ 16.196106][ T282] bond0 (unregistering): (slave eth0): Releasing backup interface [ 16.218062][ T282] bond0 (unregistering): (slave eth1): Releasing backup interface [ 16.240896][ T282] bond0 (unregistering): Released all slaves [ 16.268102][ T39] br0: port 1(s0) entered disabled state [ 16.272907][ T39] br0: port 2(s1) entered disabled state [ 16.578727][ T287] bond0: (slave eth0): making interface the new active one [ 16.579430][ T287] bond0: (slave eth0): Enslaving as an active interface with an up link [ 16.580272][ T39] br0: port 1(s0) entered blocking state [ 16.580631][ T39] br0: port 1(s0) entered forwarding state [ 16.710788][ T288] bond0: (slave eth1): Enslaving as a backup interface with an up link [ 16.712088][ T45] br0: port 2(s1) entered blocking state [ 16.712475][ T45] br0: port 2(s1) entered forwarding state [ 19.082541][ T308] eth0: entered promiscuous mode [ 35.199667][ T354] eth0: left promiscuous mode [ 35.593896][ T355] [ 35.594066][ T355] ============================================ [ 35.594260][ T355] WARNING: possible recursive locking detected [ 35.594456][ T355] 6.13.0-rc5-virtme #1 Not tainted [ 35.594611][ T355] -------------------------------------------- [ 35.594855][ T355] ip/355 is trying to acquire lock: [ 35.595013][ T355] ffffffff937f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 35.595343][ T355] [ 35.595343][ T355] but task is already holding lock: [ 35.595583][ T355] ffffffff937f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 35.595929][ T355] [ 35.595929][ T355] other info that might help us debug this: [ 35.596161][ T355] Possible unsafe locking scenario: [ 35.596161][ T355] [ 35.596402][ T355] CPU0 [ 35.596526][ T355] ---- [ 35.596640][ T355] lock((netdev_chain).rwsem); [ 35.596801][ T355] lock((netdev_chain).rwsem); [ 35.596967][ T355] [ 35.596967][ T355] *** DEADLOCK *** [ 35.596967][ T355] [ 35.597220][ T355] May be due to missing lock nesting notation [ 35.597220][ T355] [ 35.597456][ T355] 2 locks held by ip/355: [ 35.597579][ T355] #0: ffffffff93801dc8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 35.597881][ T355] #1: ffffffff937f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 35.598229][ T355] [ 35.598229][ T355] stack backtrace: [ 35.598438][ T355] CPU: 2 UID: 0 PID: 355 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 35.598698][ T355] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 35.598905][ T355] Call Trace: [ 35.599041][ T355] [ 35.599128][ T355] dump_stack_lvl+0x82/0xd0 [ 35.599293][ T355] print_deadlock_bug+0x40a/0x650 [ 35.599457][ T355] validate_chain+0x5bf/0xae0 [ 35.599643][ T355] ? __pfx_validate_chain+0x10/0x10 [ 35.599810][ T355] ? hlock_class+0x4e/0x130 [ 35.599974][ T355] ? mark_lock+0x38/0x3e0 [ 35.600098][ T355] __lock_acquire+0xb9a/0x1680 [ 35.600267][ T355] lock_acquire.part.0+0xeb/0x330 [ 35.600432][ T355] ? blocking_notifier_call_chain+0x50/0x90 [ 35.600660][ T355] ? __kasan_slab_free+0x38/0x50 [ 35.600824][ T355] ? kmem_cache_free+0xf8/0x330 [ 35.600994][ T355] ? remove_proc_entry+0x18d/0x3e0 [ 35.601162][ T355] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 35.601337][ T355] ? trace_lock_acquire+0x14c/0x1f0 [ 35.601523][ T355] ? lock_acquire+0x32/0xc0 [ 35.601679][ T355] ? blocking_notifier_call_chain+0x50/0x90 [ 35.601922][ T355] down_read+0x9f/0x340 [ 35.602099][ T355] ? blocking_notifier_call_chain+0x50/0x90 [ 35.602359][ T355] ? __pfx_down_read+0x10/0x10 [ 35.602525][ T355] ? __debug_check_no_obj_freed+0x253/0x520 [ 35.602727][ T355] blocking_notifier_call_chain+0x50/0x90 [ 35.602913][ T355] __netdev_upper_dev_unlink+0xd9/0x220 [ 35.603074][ T355] ? mark_held_locks+0x9e/0xe0 [ 35.603237][ T355] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 35.603464][ T355] ? unregister_netdevice_queue+0x70/0x410 [ 35.603665][ T355] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 35.603895][ T355] ? remove_proc_entry+0x18d/0x3e0 [ 35.604060][ T355] netdev_upper_dev_unlink+0x71/0xa0 [ 35.604241][ T355] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 35.604455][ T355] macvlan_device_event+0x51b/0x7e0 [ 35.604622][ T355] ? __pfx_macvlan_device_event+0x10/0x10 [ 35.604794][ T355] ? bond_remove_proc_entry+0x10f/0x1a0 [ 35.604961][ T355] notifier_call_chain+0xcd/0x150 [ 35.605155][ T355] blocking_notifier_call_chain+0x66/0x90 [ 35.605320][ T355] unregister_netdevice_many_notify+0xa7b/0x1580 [ 35.605522][ T355] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 35.605719][ T355] ? rtnl_dellink+0x228/0xa40 [ 35.605914][ T355] ? sock_def_readable+0x11e/0x300 [ 35.606077][ T355] ? __pfx___mutex_lock+0x10/0x10 [ 35.606241][ T355] ? rtnl_is_locked+0x15/0x20 [ 35.606405][ T355] ? unregister_netdevice_queue+0x70/0x410 [ 35.606625][ T355] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 35.606858][ T355] ? __nla_validate_parse+0x48/0x3d0 [ 35.607096][ T355] rtnl_dellink+0x348/0xa40 [ 35.607258][ T355] ? __pfx_rtnl_dellink+0x10/0x10 [ 35.607436][ T355] ? find_held_lock+0x2c/0x110 [ 35.607596][ T355] ? __lock_release+0x103/0x460 [ 35.607756][ T355] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 35.607939][ T355] ? __pfx___lock_release+0x10/0x10 [ 35.608099][ T355] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 35.608274][ T355] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 35.608441][ T355] ? __pfx_rtnl_dellink+0x10/0x10 [ 35.608613][ T355] rtnetlink_rcv_msg+0x712/0xc10 [ 35.608804][ T355] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 35.608958][ T355] ? hlock_class+0x4e/0x130 [ 35.609119][ T355] ? mark_lock+0x38/0x3e0 [ 35.609240][ T355] ? __lock_acquire+0xb9a/0x1680 [ 35.609403][ T355] netlink_rcv_skb+0x130/0x360 [ 35.609567][ T355] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 35.609728][ T355] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 35.609912][ T355] ? netlink_deliver_tap+0x13e/0x340 [ 35.610095][ T355] ? netlink_deliver_tap+0xc3/0x340 [ 35.610256][ T355] netlink_unicast+0x44b/0x710 [ 35.610440][ T355] ? __pfx_netlink_unicast+0x10/0x10 [ 35.610613][ T355] ? find_held_lock+0x2c/0x110 [ 35.610784][ T355] netlink_sendmsg+0x723/0xbe0 [ 35.610954][ T355] ? __pfx_netlink_sendmsg+0x10/0x10 [ 35.611128][ T355] ____sys_sendmsg+0x7ac/0xa10 [ 35.611290][ T355] ? __pfx_____sys_sendmsg+0x10/0x10 [ 35.611474][ T355] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 35.611679][ T355] ___sys_sendmsg+0xee/0x170 [ 35.611850][ T355] ? __pfx____sys_sendmsg+0x10/0x10 [ 35.612026][ T355] ? kasan_save_stack+0x34/0x50 [ 35.612192][ T355] ? kasan_save_stack+0x24/0x50 [ 35.612350][ T355] ? __kasan_record_aux_stack+0x8e/0xa0 [ 35.612517][ T355] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 35.612736][ T355] ? __x64_sys_close+0x7c/0xd0 [ 35.612953][ T355] ? do_syscall_64+0xc1/0x1d0 [ 35.613117][ T355] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 35.613317][ T355] ? __lock_acquire+0xb9a/0x1680 [ 35.613481][ T355] ? find_held_lock+0x2c/0x110 [ 35.613657][ T355] ? __lock_release+0x103/0x460 [ 35.613826][ T355] ? __virt_addr_valid+0x22b/0x430 [ 35.613984][ T355] ? __pfx___lock_release+0x10/0x10 [ 35.614129][ T355] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 35.614290][ T355] __sys_sendmsg+0x109/0x1a0 [ 35.614452][ T355] ? __pfx___sys_sendmsg+0x10/0x10 [ 35.614611][ T355] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 35.614811][ T355] do_syscall_64+0xc1/0x1d0 [ 35.614970][ T355] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 35.615164][ T355] RIP: 0033:0x7eff9a0299a7 [ 35.615335][ T355] 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 [ 35.615909][ T355] RSP: 002b:00007fff16bb4398 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 35.616163][ T355] RAX: ffffffffffffffda RBX: 00007fff16bb4ad0 RCX: 00007eff9a0299a7 [ 35.616406][ T355] RDX: 0000000000000000 RSI: 00007fff16bb4400 RDI: 0000000000000005 [ 35.616653][ T355] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 35.616913][ T355] R10: 00007eff99ee74a8 R11: 0000000000000246 R12: 0000000000000001 [ 35.617165][ T355] R13: 00000000677927ec R14: 0000000000498600 R15: 0000000000000000 [ 35.617417][ T355] [ 35.670723][ T355] bond0 (unregistering): (slave eth0): Releasing backup interface [ 35.688985][ T355] bond0 (unregistering): (slave eth1): Releasing backup interface [ 35.718549][ T355] bond0 (unregistering): Released all slaves [ 35.725803][ T39] br0: port 1(s0) entered disabled state [ 35.726906][ T39] br0: port 2(s1) entered disabled state [ 35.772531][ T355] ip (355) used greatest stack depth: 23672 bytes left [ 35.967759][ T359] bond0: (slave eth0): making interface the new active one [ 35.968393][ T359] bond0: (slave eth0): Enslaving as an active interface with an up link [ 35.968882][ T45] br0: port 1(s0) entered blocking state [ 35.969056][ T45] br0: port 1(s0) entered forwarding state [ 36.033597][ T360] bond0: (slave eth1): Enslaving as an active interface with an up link [ 36.034264][ T39] br0: port 2(s1) entered blocking state [ 36.034503][ T39] br0: port 2(s1) entered forwarding state [ 38.611108][ T389] eth0: entered promiscuous mode [ 53.647554][ T435] eth0: left promiscuous mode [ 53.914602][ T436] bond0 (unregistering): (slave eth0): Releasing active interface [ 53.934451][ T436] bond0 (unregistering): (slave eth1): Releasing active interface [ 53.958227][ T436] bond0 (unregistering): Released all slaves [ 53.971608][ T39] br0: port 1(s0) entered disabled state [ 53.972877][ T39] br0: port 2(s1) entered disabled state [ 54.210015][ T440] bond0: (slave eth0): making interface the new active one [ 54.210745][ T440] bond0: (slave eth0): Enslaving as an active interface with an up link [ 54.211244][ T45] br0: port 1(s0) entered blocking state [ 54.211416][ T45] br0: port 1(s0) entered forwarding state [ 54.289491][ T441] bond0: (slave eth1): Enslaving as an active interface with an up link [ 54.290127][ T39] br0: port 2(s1) entered blocking state [ 54.290312][ T39] br0: port 2(s1) entered forwarding state [ 56.133305][ T461] eth0: entered promiscuous mode [ 71.230625][ T506] eth0: left promiscuous mode [ 71.424168][ T508] br0: port 3(c0) entered disabled state [ 71.535848][ T508] c0 (unregistering): left allmulticast mode [ 71.536169][ T508] c0 (unregistering): left promiscuous mode [ 71.536464][ T508] br0: port 3(c0) entered disabled state [ 71.847090][ T515] br0: port 1(s0) entered disabled state [ 71.909824][ T515] bond0: (slave eth0): Releasing active interface [ 71.910216][ T515] bond0: (slave eth0): the permanent HWaddr of slave - 0a:c3:85:90:77:4a - is still in use by bond - set the HWaddr of slave to a different address to avoid conflicts [ 71.910959][ T515] bond0: (slave eth1): making interface the new active one [ 72.022839][ T515] s0 (unregistering): left allmulticast mode [ 72.023239][ T515] s0 (unregistering): left promiscuous mode [ 72.023557][ T515] br0: port 1(s0) entered disabled state [ 72.152701][ T516] br0: port 2(s1) entered disabled state [ 72.229792][ T516] bond0: (slave eth1): Releasing active interface [ 72.349027][ T516] s1 (unregistering): left allmulticast mode [ 72.349550][ T516] s1 (unregistering): left promiscuous mode [ 72.349894][ T516] br0: port 2(s1) entered disabled state [ 72.609946][ T259] bond0 (unregistering): Released all slaves