[ 12.759465][ T288] 8021q: 802.1Q VLAN Support v1.8 [ 13.906810][ T304] br0: port 1(veth1) entered blocking state [ 13.907263][ T304] br0: port 1(veth1) entered disabled state [ 13.907657][ T304] veth1: entered allmulticast mode [ 13.909693][ T304] veth1: entered promiscuous mode [ 13.991657][ T306] br0: port 2(veth2) entered blocking state [ 13.992008][ T306] br0: port 2(veth2) entered disabled state [ 13.992290][ T306] veth2: entered allmulticast mode [ 14.000551][ T306] veth2: entered promiscuous mode [ 14.165119][ T70] br0: port 1(veth1) entered blocking state [ 14.165629][ T70] br0: port 1(veth1) entered forwarding state [ 14.233745][ T58] br0: port 2(veth2) entered blocking state [ 14.234015][ T58] br0: port 2(veth2) entered forwarding state [ 42.309047][ T377] GACT probability NOT on [ 72.662699][ T593] [ 72.662826][ T593] ============================================ [ 72.663025][ T593] WARNING: possible recursive locking detected [ 72.663219][ T593] 6.13.0-rc5-virtme #1 Not tainted [ 72.663381][ T593] -------------------------------------------- [ 72.663577][ T593] ip/593 is trying to acquire lock: [ 72.663732][ T593] ffffffffb57d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 72.664059][ T593] [ 72.664059][ T593] but task is already holding lock: [ 72.664291][ T593] ffffffffb57d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 72.664607][ T593] [ 72.664607][ T593] other info that might help us debug this: [ 72.664833][ T593] Possible unsafe locking scenario: [ 72.664833][ T593] [ 72.665063][ T593] CPU0 [ 72.665182][ T593] ---- [ 72.665299][ T593] lock((netdev_chain).rwsem); [ 72.665460][ T593] lock((netdev_chain).rwsem); [ 72.665619][ T593] [ 72.665619][ T593] *** DEADLOCK *** [ 72.665619][ T593] [ 72.665846][ T593] May be due to missing lock nesting notation [ 72.665846][ T593] [ 72.666075][ T593] 2 locks held by ip/593: [ 72.666196][ T593] #0: ffffffffb57e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x653/0xa70 [ 72.666483][ T593] #1: ffffffffb57d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 72.666808][ T593] [ 72.666808][ T593] stack backtrace: [ 72.667004][ T593] CPU: 3 UID: 0 PID: 593 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 72.667238][ T593] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 72.667437][ T593] Call Trace: [ 72.667570][ T593] [ 72.667651][ T593] dump_stack_lvl+0x82/0xd0 [ 72.667818][ T593] print_deadlock_bug+0x40a/0x650 [ 72.667979][ T593] validate_chain+0x5bf/0xae0 [ 72.668137][ T593] ? __pfx_validate_chain+0x10/0x10 [ 72.668299][ T593] ? hlock_class+0x4e/0x130 [ 72.668454][ T593] ? mark_lock+0x38/0x3e0 [ 72.668575][ T593] __lock_acquire+0xb9a/0x1680 [ 72.668733][ T593] lock_acquire.part.0+0xeb/0x330 [ 72.668892][ T593] ? blocking_notifier_call_chain+0x50/0x90 [ 72.669088][ T593] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 72.669243][ T593] ? trace_lock_acquire+0x14c/0x1f0 [ 72.669400][ T593] ? lock_acquire+0x32/0xc0 [ 72.669555][ T593] ? blocking_notifier_call_chain+0x50/0x90 [ 72.669756][ T593] down_read+0x9f/0x340 [ 72.669877][ T593] ? blocking_notifier_call_chain+0x50/0x90 [ 72.670076][ T593] ? __pfx_down_read+0x10/0x10 [ 72.670235][ T593] blocking_notifier_call_chain+0x50/0x90 [ 72.670397][ T593] __dev_close_many+0xdf/0x2d0 [ 72.670554][ T593] ? __pfx___dev_close_many+0x10/0x10 [ 72.670711][ T593] dev_close_many+0x202/0x650 [ 72.670867][ T593] ? __pfx_dev_close_many+0x10/0x10 [ 72.671022][ T593] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 72.671220][ T593] vlan_device_event+0x143b/0x2130 [8021q] [ 72.671445][ T593] ? __pfx_vlan_device_event+0x10/0x10 [8021q] [ 72.671673][ T593] ? packet_notifier+0x3b0/0x810 [ 72.671837][ T593] notifier_call_chain+0xcd/0x150 [ 72.671994][ T593] blocking_notifier_call_chain+0x66/0x90 [ 72.672150][ T593] __dev_notify_flags+0x170/0x250 [ 72.672309][ T593] ? __pfx___dev_notify_flags+0x10/0x10 [ 72.672471][ T593] ? __dev_change_flags+0x24f/0x6c0 [ 72.672628][ T593] ? __pfx___dev_change_flags+0x10/0x10 [ 72.672786][ T593] ? rcu_read_lock_any_held+0x43/0xb0 [ 72.672946][ T593] ? validate_chain+0x1fe/0xae0 [ 72.673103][ T593] dev_change_flags+0xec/0x160 [ 72.673259][ T593] cycle_netdev+0x94/0xf0 [vrf] [ 72.673419][ T593] vrf_del_slave+0x40/0x60 [vrf] [ 72.673582][ T593] do_set_master+0xb5/0x1c0 [ 72.673743][ T593] do_setlink.constprop.0+0x80e/0x2300 [ 72.673903][ T593] ? __pfx_do_setlink.constprop.0+0x10/0x10 [ 72.674098][ T593] ? lock_acquire.part.0+0xeb/0x330 [ 72.674255][ T593] ? rtnl_newlink+0x653/0xa70 [ 72.674411][ T593] ? rtnl_newlink+0xb9/0xa70 [ 72.674564][ T593] ? rtnetlink_rcv_msg+0x712/0xc10 [ 72.674721][ T593] ? __mutex_trylock_common+0xfa/0x260 [ 72.674879][ T593] ? __pfx___mutex_trylock_common+0x10/0x10 [ 72.675071][ T593] ? lock_acquire+0x32/0xc0 [ 72.675226][ T593] ? trace_contention_end+0xef/0x150 [ 72.675381][ T593] ? __mutex_lock+0x190/0xbc0 [ 72.675537][ T593] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 72.675693][ T593] ? rtnl_newlink+0x653/0xa70 [ 72.675860][ T593] ? __pfx___mutex_lock+0x10/0x10 [ 72.676017][ T593] ? __rtnl_newlink+0x3f2/0xa80 [ 72.676174][ T593] rtnl_newlink+0x69c/0xa70 [ 72.676330][ T593] ? __pfx_rtnl_newlink+0x10/0x10 [ 72.676485][ T593] ? find_held_lock+0x2c/0x110 [ 72.676642][ T593] ? __pfx___lock_release+0x10/0x10 [ 72.676799][ T593] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 72.676955][ T593] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 72.677116][ T593] ? __pfx_rtnl_newlink+0x10/0x10 [ 72.677270][ T593] rtnetlink_rcv_msg+0x712/0xc10 [ 72.677426][ T593] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 72.677580][ T593] ? hlock_class+0x4e/0x130 [ 72.677733][ T593] ? mark_lock+0x38/0x3e0 [ 72.677852][ T593] ? __lock_acquire+0xb9a/0x1680 [ 72.678009][ T593] netlink_rcv_skb+0x130/0x360 [ 72.678169][ T593] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 72.678328][ T593] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 72.678487][ T593] ? netlink_deliver_tap+0x13e/0x340 [ 72.678647][ T593] ? netlink_deliver_tap+0xc3/0x340 [ 72.678805][ T593] netlink_unicast+0x44b/0x710 [ 72.678961][ T593] ? __pfx_netlink_unicast+0x10/0x10 [ 72.679117][ T593] ? find_held_lock+0x2c/0x110 [ 72.679278][ T593] netlink_sendmsg+0x723/0xbe0 [ 72.679436][ T593] ? __pfx_netlink_sendmsg+0x10/0x10 [ 72.679595][ T593] ____sys_sendmsg+0x7ac/0xa10 [ 72.679753][ T593] ? __pfx_____sys_sendmsg+0x10/0x10 [ 72.679911][ T593] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 72.680107][ T593] ___sys_sendmsg+0xee/0x170 [ 72.680264][ T593] ? __pfx____sys_sendmsg+0x10/0x10 [ 72.680423][ T593] ? kasan_save_stack+0x34/0x50 [ 72.680584][ T593] ? kasan_save_stack+0x24/0x50 [ 72.680738][ T593] ? __kasan_record_aux_stack+0x8e/0xa0 [ 72.680895][ T593] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 72.681091][ T593] ? __x64_sys_close+0x7c/0xd0 [ 72.681248][ T593] ? do_syscall_64+0xc1/0x1d0 [ 72.681405][ T593] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 72.681603][ T593] ? __lock_acquire+0xb9a/0x1680 [ 72.681776][ T593] ? find_held_lock+0x2c/0x110 [ 72.681934][ T593] ? __lock_release+0x103/0x460 [ 72.682088][ T593] ? __virt_addr_valid+0x22b/0x430 [ 72.682247][ T593] ? __pfx___lock_release+0x10/0x10 [ 72.682404][ T593] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 72.682561][ T593] __sys_sendmsg+0x109/0x1a0 [ 72.682717][ T593] ? __pfx___sys_sendmsg+0x10/0x10 [ 72.682879][ T593] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 72.683081][ T593] do_syscall_64+0xc1/0x1d0 [ 72.683239][ T593] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 72.683437][ T593] RIP: 0033:0x7fb1d58039a7 [ 72.683601][ T593] 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 [ 72.684155][ T593] RSP: 002b:00007ffdd8958558 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 72.684397][ T593] RAX: ffffffffffffffda RBX: 00007ffdd8958c80 RCX: 00007fb1d58039a7 [ 72.684633][ T593] RDX: 0000000000000000 RSI: 00007ffdd89585c0 RDI: 0000000000000005 [ 72.684869][ T593] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000 [ 72.685113][ T593] R10: 00000000042a7910 R11: 0000000000000246 R12: 0000000000000004 [ 72.685347][ T593] R13: 0000000067792dd6 R14: 0000000000498600 R15: 0000000000000000 [ 72.685588][ T593] [ 72.689161][ T593] br1: port 1(veth0) entered blocking state [ 72.690027][ T593] br1: port 1(veth0) entered disabled state [ 72.690226][ T593] veth0: entered allmulticast mode [ 72.691687][ T593] veth0: entered promiscuous mode [ 72.742810][ T595] br1: port 1(veth0) entered blocking state [ 72.743029][ T595] br1: port 1(veth0) entered forwarding state [ 74.943824][ T600] veth0: left allmulticast mode [ 74.944040][ T600] veth0: left promiscuous mode [ 74.944316][ T600] br1: port 1(veth0) entered disabled state [ 85.789093][ T716] br0: vlan filtering disabled, automatically disabling multicast vlan snooping [ 86.190741][ T728] br0: port 2(veth2) entered disabled state [ 86.250554][ T729] br0: port 1(veth1) entered disabled state [ 86.310367][ T730] veth2: left allmulticast mode [ 86.311262][ T730] veth2: left promiscuous mode [ 86.311532][ T730] br0: port 2(veth2) entered disabled state [ 86.312721][ T730] veth1: left allmulticast mode [ 86.312890][ T730] veth1: left promiscuous mode [ 86.313153][ T730] br0: port 1(veth1) entered disabled state