Warning: Permanently added '10.128.0.56' (ED25519) to the list of known hosts. syzkaller login: [ 33.684879][ T4292] chnl_net:caif_netlink_parms(): no params data found [ 33.715105][ T4292] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.716639][ T4292] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.718711][ T4292] device bridge_slave_0 entered promiscuous mode [ 33.722099][ T4292] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.723896][ T4292] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.725896][ T4292] device bridge_slave_1 entered promiscuous mode [ 33.738065][ T4292] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 33.741439][ T4292] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 33.754624][ T4292] team0: Port device team_slave_0 added [ 33.757567][ T4292] team0: Port device team_slave_1 added [ 33.767650][ T4292] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 33.769160][ T4292] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 33.774809][ T4292] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 33.778419][ T4292] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 33.779833][ T4292] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 33.785095][ T4292] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 33.874594][ T4292] device hsr_slave_0 entered promiscuous mode [ 33.914071][ T4292] device hsr_slave_1 entered promiscuous mode [ 34.021208][ T4292] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 34.054860][ T4292] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 34.094212][ T4292] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 34.134862][ T4292] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 34.186716][ T4292] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.188344][ T4292] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.190099][ T4292] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.191571][ T4292] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.226130][ T4292] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.231789][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 34.235509][ T11] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.238197][ T11] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.241396][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 34.250340][ T4292] 8021q: adding VLAN 0 to HW filter on device team0 [ 34.256298][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 34.258652][ T11] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.260055][ T11] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.264168][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 34.266090][ T11] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.267574][ T11] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.278544][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 34.280694][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 34.287303][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 34.291636][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 34.297044][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 34.300764][ T4292] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 34.309833][ T289] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 34.311576][ T289] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 34.318545][ T4292] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 34.329695][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 34.339971][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 34.342388][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 34.345125][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 34.349791][ T4292] device veth0_vlan entered promiscuous mode [ 34.356606][ T4292] device veth1_vlan entered promiscuous mode [ 34.369211][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 34.371511][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 34.374444][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 34.378063][ T4292] device veth0_macvtap entered promiscuous mode [ 34.381387][ T4292] device veth1_macvtap entered promiscuous mode [ 34.390931][ T4292] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 34.393258][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 34.395988][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 34.400666][ T4292] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 34.402552][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 34.407540][ T4292] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 34.409490][ T4292] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 34.411314][ T4292] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 34.414344][ T4292] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 34.443938][ T4292] netlink: 'syz-executor109': attribute type 10 has an invalid length. [ 34.455582][ T4292] team0: Port device vlan1 added [ 34.462161][ T4292] netlink: 'syz-executor109': attribute type 10 has an invalid length. [ 34.491810][ T4292] device veth0_vlan left promiscuous mode [ 34.494225][ T4292] device veth0_vlan entered promiscuous mode [ 34.496678][ T4292] [ 34.497159][ T4292] ============================================ [ 34.498485][ T4292] WARNING: possible recursive locking detected [ 34.499778][ T4292] 6.1.119-syzkaller #0 Not tainted [ 34.500905][ T4292] -------------------------------------------- [ 34.502163][ T4292] syz-executor109/4292 is trying to acquire lock: [ 34.503508][ T4292] ffff0000cbc8cd00 (team->team_lock_key){+.+.}-{3:3}, at: team_port_change_check+0x5c/0x230 [ 34.505642][ T4292] [ 34.505642][ T4292] but task is already holding lock: [ 34.507325][ T4292] ffff0000cbc8cd00 (team->team_lock_key){+.+.}-{3:3}, at: team_add_slave+0xa8/0x1f78 [ 34.509284][ T4292] [ 34.509284][ T4292] other info that might help us debug this: [ 34.510888][ T4292] Possible unsafe locking scenario: [ 34.510888][ T4292] [ 34.512405][ T4292] CPU0 [ 34.513072][ T4292] ---- [ 34.513752][ T4292] lock(team->team_lock_key); [ 34.514764][ T4292] lock(team->team_lock_key); [ 34.515821][ T4292] [ 34.515821][ T4292] *** DEADLOCK *** [ 34.515821][ T4292] [ 34.517478][ T4292] May be due to missing lock nesting notation [ 34.517478][ T4292] [ 34.519315][ T4292] 2 locks held by syz-executor109/4292: [ 34.520510][ T4292] #0: ffff8000180b34c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e8/0xd94 [ 34.522506][ T4292] #1: ffff0000cbc8cd00 (team->team_lock_key){+.+.}-{3:3}, at: team_add_slave+0xa8/0x1f78 [ 34.524627][ T4292] [ 34.524627][ T4292] stack backtrace: [ 34.525864][ T4292] CPU: 1 PID: 4292 Comm: syz-executor109 Not tainted 6.1.119-syzkaller #0 [ 34.527613][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 34.529679][ T4292] Call trace: [ 34.530288][ T4292] dump_backtrace+0x1c8/0x1f4 [ 34.531280][ T4292] show_stack+0x2c/0x3c [ 34.532179][ T4292] dump_stack_lvl+0x108/0x170 [ 34.533089][ T4292] dump_stack+0x1c/0x58 [ 34.533988][ T4292] __lock_acquire+0x6310/0x7680 [ 34.535053][ T4292] lock_acquire+0x26c/0x7cc [ 34.535975][ T4292] __mutex_lock_common+0x190/0x21a0 [ 34.537031][ T4292] mutex_lock_nested+0x38/0x44 [ 34.538078][ T4292] team_port_change_check+0x5c/0x230 [ 34.539245][ T4292] team_device_event+0x434/0x4d0 [ 34.540259][ T4292] raw_notifier_call_chain+0xd4/0x164 [ 34.541468][ T4292] __dev_notify_flags+0x2ac/0x534 [ 34.542566][ T4292] dev_change_flags+0xc8/0x154 [ 34.543560][ T4292] vlan_device_event+0x3f8/0x181c [ 34.544590][ T4292] raw_notifier_call_chain+0xd4/0x164 [ 34.545658][ T4292] dev_open+0x1a4/0x23c [ 34.546576][ T4292] team_add_slave+0x704/0x1f78 [ 34.547564][ T4292] do_setlink+0xc14/0x3318 [ 34.548518][ T4292] rtnl_setlink+0x37c/0x464 [ 34.549461][ T4292] rtnetlink_rcv_msg+0x72c/0xd94 [ 34.550531][ T4292] netlink_rcv_skb+0x20c/0x3b8 [ 34.551474][ T4292] rtnetlink_rcv+0x28/0x38 [ 34.552391][ T4292] netlink_unicast+0x65c/0x898 [ 34.553431][ T4292] netlink_sendmsg+0x834/0xb18 [ 34.554434][ T4292] sock_write_iter+0x2d8/0x414 [ 34.555392][ T4292] do_iter_write+0x534/0x964 [ 34.556355][ T4292] do_writev+0x220/0x3ec [ 34.557197][ T4292] __arm64_sys_writev+0x80/0x94 [ 34.558195][ T4292] invoke_syscall+0x98/0x2bc [ 34.559143][ T4292] el0_svc_common+0x138/0x258 [ 34.560101][ T4292] do_el0_svc+0x58/0x13c [ 34.561042][ T4292] el0_svc+0x58/0x168 [ 34.561889][ T4292] el0t_64_sync_handler+0x84/0xf0 [ 34.562922][ T4292] el0t_64_sync+0x18c/0x190