[ 10.962038][ T260] ip (260) used greatest stack depth: 23552 bytes left [ 12.786288][ T307] 8021q: 802.1Q VLAN Support v1.8 [ 17.829432][ T436] br10: port 1(veth1.10) entered blocking state [ 17.829878][ T436] br10: port 1(veth1.10) entered disabled state [ 17.830248][ T436] veth1.10: entered allmulticast mode [ 17.830468][ T436] veth1: entered allmulticast mode [ 17.832459][ T436] veth1.10: entered promiscuous mode [ 17.832867][ T436] veth1: entered promiscuous mode [ 17.953044][ T441] br10: port 2(veth2.10) entered blocking state [ 17.953441][ T441] br10: port 2(veth2.10) entered disabled state [ 17.953718][ T441] veth2.10: entered allmulticast mode [ 17.953903][ T441] veth2: entered allmulticast mode [ 17.955891][ T441] veth2.10: entered promiscuous mode [ 17.956114][ T441] veth2: entered promiscuous mode [ 18.077617][ T446] br10: port 2(veth2.10) entered blocking state [ 18.078024][ T446] br10: port 2(veth2.10) entered forwarding state [ 18.078669][ T446] br10: port 1(veth1.10) entered blocking state [ 18.078927][ T446] br10: port 1(veth1.10) entered forwarding state [ 19.095337][ T482] br11: port 1(veth1.11) entered blocking state [ 19.095680][ T482] br11: port 1(veth1.11) entered disabled state [ 19.095988][ T482] veth1.11: entered allmulticast mode [ 19.098021][ T482] veth1.11: entered promiscuous mode [ 19.195149][ T487] br11: port 2(veth2.11) entered blocking state [ 19.195439][ T487] br11: port 2(veth2.11) entered disabled state [ 19.195704][ T487] veth2.11: entered allmulticast mode [ 19.197910][ T487] veth2.11: entered promiscuous mode [ 19.310059][ T492] br11: port 2(veth2.11) entered blocking state [ 19.310371][ T492] br11: port 2(veth2.11) entered forwarding state [ 19.310826][ T492] br11: port 1(veth1.11) entered blocking state [ 19.311073][ T492] br11: port 1(veth1.11) entered forwarding state [ 20.281107][ T527] br12: port 1(veth1.12) entered blocking state [ 20.281399][ T527] br12: port 1(veth1.12) entered disabled state [ 20.281658][ T527] veth1.12: entered allmulticast mode [ 20.283549][ T527] veth1.12: entered promiscuous mode [ 20.439510][ T533] br12: port 2(veth2.12) entered blocking state [ 20.439810][ T533] br12: port 2(veth2.12) entered disabled state [ 20.440095][ T533] veth2.12: entered allmulticast mode [ 20.442522][ T533] veth2.12: entered promiscuous mode [ 20.560175][ T538] br12: port 2(veth2.12) entered blocking state [ 20.560537][ T538] br12: port 2(veth2.12) entered forwarding state [ 20.561015][ T538] br12: port 1(veth1.12) entered blocking state [ 20.561318][ T538] br12: port 1(veth1.12) entered forwarding state [ 429.716743][ T1969] br12: port 2(veth2.12) entered disabled state [ 429.828289][ T1971] br12: port 1(veth1.12) entered disabled state [ 430.036444][ T1975] veth2.12: left allmulticast mode [ 430.036739][ T1975] veth2.12: left promiscuous mode [ 430.037103][ T1975] br12: port 2(veth2.12) entered disabled state [ 430.133148][ T1977] veth1.12: left allmulticast mode [ 430.133403][ T1977] veth1.12: left promiscuous mode [ 430.133716][ T1977] br12: port 1(veth1.12) entered disabled state [ 430.715326][ T1987] br11: port 2(veth2.11) entered disabled state [ 430.824496][ T1989] br11: port 1(veth1.11) entered disabled state [ 431.005697][ T1993] veth2.11: left allmulticast mode [ 431.005943][ T1993] veth2.11: left promiscuous mode [ 431.006274][ T1993] br11: port 2(veth2.11) entered disabled state [ 431.109273][ T1995] veth1.11: left allmulticast mode [ 431.109550][ T1995] veth1.11: left promiscuous mode [ 431.109882][ T1995] br11: port 1(veth1.11) entered disabled state [ 431.629752][ T2003] veth2: left allmulticast mode [ 431.630042][ T2003] veth2: left promiscuous mode [ 431.631670][ T2003] br10: port 2(veth2.10) entered disabled state [ 431.756156][ T2005] veth1: left allmulticast mode [ 431.756469][ T2005] veth1: left promiscuous mode [ 431.758121][ T2005] br10: port 1(veth1.10) entered disabled state [ 431.954168][ T2009] veth2.10: left allmulticast mode [ 431.954494][ T2009] veth2.10: left promiscuous mode [ 431.954868][ T2009] br10: port 2(veth2.10) entered disabled state [ 432.040531][ T2011] veth1.10: left allmulticast mode [ 432.040765][ T2011] veth1.10: left promiscuous mode [ 432.041128][ T2011] br10: port 1(veth1.10) entered disabled state [ 433.029901][ T2028] [ 433.030174][ T2028] ============================================ [ 433.030482][ T2028] WARNING: possible recursive locking detected [ 433.030778][ T2028] 6.13.0-rc5-virtme #1 Not tainted [ 433.031010][ T2028] -------------------------------------------- [ 433.031301][ T2028] ip/2028 is trying to acquire lock: [ 433.031533][ T2028] ffffffff91dd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 433.032022][ T2028] [ 433.032022][ T2028] but task is already holding lock: [ 433.032377][ T2028] ffffffff91dd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 433.032864][ T2028] [ 433.032864][ T2028] other info that might help us debug this: [ 433.033206][ T2028] Possible unsafe locking scenario: [ 433.033206][ T2028] [ 433.033550][ T2028] CPU0 [ 433.033727][ T2028] ---- [ 433.033907][ T2028] lock((netdev_chain).rwsem); [ 433.034140][ T2028] lock((netdev_chain).rwsem); [ 433.034380][ T2028] [ 433.034380][ T2028] *** DEADLOCK *** [ 433.034380][ T2028] [ 433.034700][ T2028] May be due to missing lock nesting notation [ 433.034700][ T2028] [ 433.034949][ T2028] 2 locks held by ip/2028: [ 433.035101][ T2028] #0: ffffffff91de7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 433.035374][ T2028] #1: ffffffff91dd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 433.035716][ T2028] [ 433.035716][ T2028] stack backtrace: [ 433.035912][ T2028] CPU: 2 UID: 0 PID: 2028 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 433.036135][ T2028] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 433.036333][ T2028] Call Trace: [ 433.036448][ T2028] [ 433.036530][ T2028] dump_stack_lvl+0x82/0xd0 [ 433.036682][ T2028] print_deadlock_bug+0x40a/0x650 [ 433.036855][ T2028] validate_chain+0x5bf/0xae0 [ 433.037003][ T2028] ? __pfx_validate_chain+0x10/0x10 [ 433.037152][ T2028] ? hlock_class+0x4e/0x130 [ 433.037296][ T2028] ? mark_lock+0x38/0x3e0 [ 433.037409][ T2028] __lock_acquire+0xb9a/0x1680 [ 433.037559][ T2028] lock_acquire.part.0+0xeb/0x330 [ 433.037709][ T2028] ? blocking_notifier_call_chain+0x50/0x90 [ 433.037906][ T2028] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 433.038106][ T2028] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 433.038251][ T2028] ? trace_lock_acquire+0x14c/0x1f0 [ 433.038395][ T2028] ? lock_acquire+0x32/0xc0 [ 433.038551][ T2028] ? blocking_notifier_call_chain+0x50/0x90 [ 433.038734][ T2028] down_read+0x9f/0x340 [ 433.038853][ T2028] ? blocking_notifier_call_chain+0x50/0x90 [ 433.039043][ T2028] ? __pfx_down_read+0x10/0x10 [ 433.039262][ T2028] ? __lock_release+0x103/0x460 [ 433.039488][ T2028] ? netconsole_netdev_event+0x2c1/0x620 [ 433.039710][ T2028] ? __pfx___lock_release+0x10/0x10 [ 433.039933][ T2028] blocking_notifier_call_chain+0x50/0x90 [ 433.040171][ T2028] __netdev_upper_dev_unlink+0xd9/0x220 [ 433.040394][ T2028] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 433.040690][ T2028] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 433.040935][ T2028] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 433.041236][ T2028] ? rtnl_is_locked+0x15/0x20 [ 433.041478][ T2028] netdev_upper_dev_unlink+0x71/0xa0 [ 433.041711][ T2028] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 433.042007][ T2028] ? netconsole_netdev_event+0x2c1/0x620 [ 433.042247][ T2028] ? mutex_is_locked+0x1c/0x60 [ 433.042495][ T2028] ? rtnl_is_locked+0x15/0x20 [ 433.042733][ T2028] ? netdev_master_upper_dev_get+0x13/0x120 [ 433.043030][ T2028] vrf_device_event+0x78/0xe0 [vrf] [ 433.043274][ T2028] notifier_call_chain+0xcd/0x150 [ 433.043516][ T2028] blocking_notifier_call_chain+0x66/0x90 [ 433.043758][ T2028] unregister_netdevice_many_notify+0xa7b/0x1580 [ 433.044056][ T2028] ? hlock_class+0x4e/0x130 [ 433.044364][ T2028] ? mark_lock+0x38/0x3e0 [ 433.044549][ T2028] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 433.044843][ T2028] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 433.045142][ T2028] ? kfree+0xf3/0x330 [ 433.045323][ T2028] ? vlan_vid_del+0x310/0x5e0 [ 433.045542][ T2028] ? vlan_vid_del+0x310/0x5e0 [ 433.045750][ T2028] rtnl_dellink+0x348/0xa40 [ 433.045922][ T2028] ? __pfx_rtnl_dellink+0x10/0x10 [ 433.046091][ T2028] ? find_held_lock+0x2c/0x110 [ 433.046239][ T2028] ? __lock_release+0x103/0x460 [ 433.046386][ T2028] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 433.046541][ T2028] ? __pfx___lock_release+0x10/0x10 [ 433.046705][ T2028] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 433.046889][ T2028] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 433.047118][ T2028] ? __pfx_rtnl_dellink+0x10/0x10 [ 433.047280][ T2028] rtnetlink_rcv_msg+0x712/0xc10 [ 433.047428][ T2028] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 433.047573][ T2028] ? hlock_class+0x4e/0x130 [ 433.047720][ T2028] ? mark_lock+0x38/0x3e0 [ 433.047846][ T2028] ? __lock_acquire+0xb9a/0x1680 [ 433.047993][ T2028] netlink_rcv_skb+0x130/0x360 [ 433.048143][ T2028] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 433.048294][ T2028] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 433.048445][ T2028] ? netlink_deliver_tap+0x13e/0x340 [ 433.048620][ T2028] ? netlink_deliver_tap+0xc3/0x340 [ 433.048767][ T2028] netlink_unicast+0x44b/0x710 [ 433.048923][ T2028] ? __pfx_netlink_unicast+0x10/0x10 [ 433.049069][ T2028] ? find_held_lock+0x2c/0x110 [ 433.049217][ T2028] netlink_sendmsg+0x723/0xbe0 [ 433.049366][ T2028] ? __pfx_netlink_sendmsg+0x10/0x10 [ 433.049513][ T2028] ____sys_sendmsg+0x7ac/0xa10 [ 433.049661][ T2028] ? __pfx_____sys_sendmsg+0x10/0x10 [ 433.049813][ T2028] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 433.050006][ T2028] ___sys_sendmsg+0xee/0x170 [ 433.050152][ T2028] ? __pfx____sys_sendmsg+0x10/0x10 [ 433.050299][ T2028] ? kasan_save_stack+0x34/0x50 [ 433.050454][ T2028] ? kasan_save_stack+0x24/0x50 [ 433.050599][ T2028] ? __kasan_record_aux_stack+0x8e/0xa0 [ 433.050798][ T2028] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 433.051076][ T2028] ? __x64_sys_close+0x7c/0xd0 [ 433.051296][ T2028] ? do_syscall_64+0xc1/0x1d0 [ 433.051514][ T2028] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 433.051788][ T2028] ? __lock_acquire+0xb9a/0x1680 [ 433.052016][ T2028] ? find_held_lock+0x2c/0x110 [ 433.052264][ T2028] ? __lock_release+0x103/0x460 [ 433.052499][ T2028] ? __virt_addr_valid+0x22b/0x430 [ 433.052738][ T2028] ? __pfx___lock_release+0x10/0x10 [ 433.052972][ T2028] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 433.053214][ T2028] __sys_sendmsg+0x109/0x1a0 [ 433.053449][ T2028] ? __pfx___sys_sendmsg+0x10/0x10 [ 433.053685][ T2028] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 433.053997][ T2028] do_syscall_64+0xc1/0x1d0 [ 433.054239][ T2028] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 433.054535][ T2028] RIP: 0033:0x7f64007859a7 [ 433.054787][ T2028] 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 [ 433.055631][ T2028] RSP: 002b:00007ffcaa893ee8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 433.055991][ T2028] RAX: ffffffffffffffda RBX: 00007ffcaa894610 RCX: 00007f64007859a7 [ 433.056352][ T2028] RDX: 0000000000000000 RSI: 00007ffcaa893f50 RDI: 0000000000000005 [ 433.056707][ T2028] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 433.057054][ T2028] R10: 00007f6400643ef8 R11: 0000000000000246 R12: 0000000000000002 [ 433.057339][ T2028] R13: 0000000067790320 R14: 0000000000498600 R15: 0000000000000000 [ 433.057563][ T2028]