Warning: Permanently added '10.128.0.233' (ECDSA) to the list of known hosts. syzkaller login: [ 105.678093][ T9739] IPVS: ftp: loaded support on port[0] = 21 [ 105.728731][ T9739] chnl_net:caif_netlink_parms(): no params data found [ 105.763048][ T9739] bridge0: port 1(bridge_slave_0) entered blocking state [ 105.770451][ T9739] bridge0: port 1(bridge_slave_0) entered disabled state [ 105.778757][ T9739] device bridge_slave_0 entered promiscuous mode [ 105.786982][ T9739] bridge0: port 2(bridge_slave_1) entered blocking state [ 105.794450][ T9739] bridge0: port 2(bridge_slave_1) entered disabled state [ 105.802032][ T9739] device bridge_slave_1 entered promiscuous mode [ 105.820311][ T9739] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 105.831086][ T9739] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 105.851419][ T9739] team0: Port device team_slave_0 added [ 105.858994][ T9739] team0: Port device team_slave_1 added [ 105.873892][ T9739] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 105.880853][ T9739] 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. [ 105.906961][ T9739] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 105.919859][ T9739] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 105.926922][ T9739] 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. [ 105.952892][ T9739] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 106.025873][ T9739] device hsr_slave_0 entered promiscuous mode [ 106.093487][ T9739] device hsr_slave_1 entered promiscuous mode [ 106.229473][ T9739] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 106.306208][ T9739] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 106.346213][ T9739] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 106.386052][ T9739] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 106.446873][ T9739] bridge0: port 2(bridge_slave_1) entered blocking state [ 106.454058][ T9739] bridge0: port 2(bridge_slave_1) entered forwarding state [ 106.461604][ T9739] bridge0: port 1(bridge_slave_0) entered blocking state [ 106.468726][ T9739] bridge0: port 1(bridge_slave_0) entered forwarding state [ 106.514269][ T9739] 8021q: adding VLAN 0 to HW filter on device bond0 [ 106.527157][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 106.537285][ T2859] bridge0: port 1(bridge_slave_0) entered disabled state [ 106.545340][ T2859] bridge0: port 2(bridge_slave_1) entered disabled state [ 106.553504][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 106.566130][ T9739] 8021q: adding VLAN 0 to HW filter on device team0 [ 106.577124][ T2856] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 106.585589][ T2856] bridge0: port 1(bridge_slave_0) entered blocking state [ 106.592639][ T2856] bridge0: port 1(bridge_slave_0) entered forwarding state [ 106.604036][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 106.612429][ T2859] bridge0: port 2(bridge_slave_1) entered blocking state [ 106.619788][ T2859] bridge0: port 2(bridge_slave_1) entered forwarding state [ 106.647272][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 106.657787][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 106.666465][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 106.674688][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 106.682977][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 106.693918][ T9739] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 106.711805][ T2856] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 106.719320][ T2856] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 106.731929][ T9739] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 106.749490][ T2856] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 106.759802][ T2856] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 106.784264][ T9739] device veth0_vlan entered promiscuous mode [ 106.793303][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 106.802017][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 106.811230][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 106.820200][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 106.829755][ T9739] device veth1_vlan entered promiscuous mode [ 106.849914][ T2856] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 106.858025][ T2856] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 106.866076][ T2856] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 106.874611][ T2856] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 106.886159][ T9739] device veth0_macvtap entered promiscuous mode [ 106.896168][ T9739] device veth1_macvtap entered promiscuous mode [ 106.912483][ T9739] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 106.920296][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 106.929163][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 106.937372][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 106.946096][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 106.957606][ T9739] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 106.965693][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 106.974281][ T2859] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 107.124339][ T9739] [ 107.126707][ T9739] ====================================================== [ 107.133705][ T9739] WARNING: possible circular locking dependency detected [ 107.140753][ T9739] 5.5.0-syzkaller #0 Not tainted [ 107.145668][ T9739] ------------------------------------------------------ [ 107.152669][ T9739] syz-executor284/9739 is trying to acquire lock: [ 107.159206][ T9739] ffff8880a92a6128 ((wq_completion)wg-kex-wireguard0){+.+.}, at: flush_workqueue+0xf7/0x14c0 [ 107.169341][ T9739] [ 107.169341][ T9739] but task is already holding lock: [ 107.176733][ T9739] ffff8880a2c50e80 (&wg->static_identity.lock){++++}, at: wg_set_device+0xe8b/0x1350 [ 107.186177][ T9739] [ 107.186177][ T9739] which lock already depends on the new lock. [ 107.186177][ T9739] [ 107.196568][ T9739] [ 107.196568][ T9739] the existing dependency chain (in reverse order) is: [ 107.205563][ T9739] [ 107.205563][ T9739] -> #2 (&wg->static_identity.lock){++++}: [ 107.213623][ T9739] down_read+0x95/0x430 [ 107.218322][ T9739] wg_noise_handshake_create_initiation+0xc0/0x670 [ 107.225808][ T9739] wg_packet_send_handshake_initiation+0x185/0x250 [ 107.232815][ T9739] wg_packet_handshake_send_worker+0x1d/0x30 [ 107.239296][ T9739] process_one_work+0xa05/0x17a0 [ 107.244744][ T9739] worker_thread+0x98/0xe40 [ 107.249761][ T9739] kthread+0x361/0x430 [ 107.254336][ T9739] ret_from_fork+0x24/0x30 [ 107.259275][ T9739] [ 107.259275][ T9739] -> #1 ((work_completion)(&peer->transmit_handshake_work)){+.+.}: [ 107.269326][ T9739] process_one_work+0x972/0x17a0 [ 107.274806][ T9739] worker_thread+0x98/0xe40 [ 107.279817][ T9739] kthread+0x361/0x430 [ 107.284388][ T9739] ret_from_fork+0x24/0x30 [ 107.289300][ T9739] [ 107.289300][ T9739] -> #0 ((wq_completion)wg-kex-wireguard0){+.+.}: [ 107.297876][ T9739] __lock_acquire+0x2596/0x4a00 [ 107.303236][ T9739] lock_acquire+0x190/0x410 [ 107.308271][ T9739] flush_workqueue+0x126/0x14c0 [ 107.313651][ T9739] peer_remove_after_dead+0x16b/0x230 [ 107.319542][ T9739] wg_peer_remove+0x244/0x340 [ 107.324731][ T9739] wg_set_device+0xf76/0x1350 [ 107.329907][ T9739] genl_rcv_msg+0x67d/0xea0 [ 107.334905][ T9739] netlink_rcv_skb+0x177/0x450 [ 107.340169][ T9739] genl_rcv+0x29/0x40 [ 107.344651][ T9739] netlink_unicast+0x59e/0x7e0 [ 107.350015][ T9739] netlink_sendmsg+0x91c/0xea0 [ 107.355279][ T9739] sock_sendmsg+0xd7/0x130 [ 107.360195][ T9739] ____sys_sendmsg+0x753/0x880 [ 107.365477][ T9739] ___sys_sendmsg+0x100/0x170 [ 107.370666][ T9739] __sys_sendmsg+0x105/0x1d0 [ 107.375752][ T9739] __x64_sys_sendmsg+0x78/0xb0 [ 107.381021][ T9739] do_syscall_64+0xfa/0x790 [ 107.386030][ T9739] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 107.392416][ T9739] [ 107.392416][ T9739] other info that might help us debug this: [ 107.392416][ T9739] [ 107.402664][ T9739] Chain exists of: [ 107.402664][ T9739] (wq_completion)wg-kex-wireguard0 --> (work_completion)(&peer->transmit_handshake_work) --> &wg->static_identity.lock [ 107.402664][ T9739] [ 107.420975][ T9739] Possible unsafe locking scenario: [ 107.420975][ T9739] [ 107.428406][ T9739] CPU0 CPU1 [ 107.433752][ T9739] ---- ---- [ 107.439097][ T9739] lock(&wg->static_identity.lock); [ 107.444354][ T9739] lock((work_completion)(&peer->transmit_handshake_work)); [ 107.454216][ T9739] lock(&wg->static_identity.lock); [ 107.462003][ T9739] lock((wq_completion)wg-kex-wireguard0); [ 107.467872][ T9739] [ 107.467872][ T9739] *** DEADLOCK *** [ 107.467872][ T9739] [ 107.476014][ T9739] 5 locks held by syz-executor284/9739: [ 107.481537][ T9739] #0: ffffffff8a7899e8 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 [ 107.489158][ T9739] #1: ffffffff8a789aa0 (genl_mutex){+.+.}, at: genl_rcv_msg+0x7de/0xea0 [ 107.497560][ T9739] #2: ffffffff8a733c80 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 [ 107.505561][ T9739] #3: ffff8880a2c510a0 (&wg->device_update_lock){+.+.}, at: wg_set_device+0x2be/0x1350 [ 107.515291][ T9739] #4: ffff8880a2c50e80 (&wg->static_identity.lock){++++}, at: wg_set_device+0xe8b/0x1350 [ 107.525256][ T9739] [ 107.525256][ T9739] stack backtrace: [ 107.531152][ T9739] CPU: 0 PID: 9739 Comm: syz-executor284 Not tainted 5.5.0-syzkaller #0 [ 107.539484][ T9739] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 107.549576][ T9739] Call Trace: [ 107.552849][ T9739] dump_stack+0x197/0x210 [ 107.557169][ T9739] print_circular_bug.isra.0.cold+0x163/0x172 [ 107.563227][ T9739] check_noncircular+0x32e/0x3e0 [ 107.568176][ T9739] ? print_circular_bug.isra.0+0x230/0x230 [ 107.573970][ T9739] ? profile_setup.cold+0xbb/0xbb [ 107.578978][ T9739] ? alloc_list_entry+0xc0/0xc0 [ 107.583857][ T9739] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 107.590121][ T9739] ? find_first_zero_bit+0x9a/0xc0 [ 107.595222][ T9739] __lock_acquire+0x2596/0x4a00 [ 107.600061][ T9739] ? check_noncircular+0x16d/0x3e0 [ 107.605156][ T9739] ? mark_held_locks+0xf0/0xf0 [ 107.609907][ T9739] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 107.616258][ T9739] ? find_first_zero_bit+0x9a/0xc0 [ 107.621478][ T9739] lock_acquire+0x190/0x410 [ 107.626006][ T9739] ? flush_workqueue+0xf7/0x14c0 [ 107.630946][ T9739] flush_workqueue+0x126/0x14c0 [ 107.635815][ T9739] ? flush_workqueue+0xf7/0x14c0 [ 107.640779][ T9739] ? napi_hash_del+0x125/0x170 [ 107.645542][ T9739] ? lock_downgrade+0x920/0x920 [ 107.650369][ T9739] ? pwq_unbound_release_workfn+0x2f0/0x2f0 [ 107.656246][ T9739] ? _raw_spin_unlock+0x28/0x40 [ 107.661072][ T9739] ? kfree_skb+0x10e/0x420 [ 107.665498][ T9739] peer_remove_after_dead+0x16b/0x230 [ 107.670844][ T9739] ? peer_remove_after_dead+0x16b/0x230 [ 107.676373][ T9739] wg_peer_remove+0x244/0x340 [ 107.681045][ T9739] wg_set_device+0xf76/0x1350 [ 107.685712][ T9739] ? set_peer+0x1150/0x1150 [ 107.690221][ T9739] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 107.696442][ T9739] ? __nla_parse+0x43/0x60 [ 107.700841][ T9739] ? genl_family_rcv_msg_attrs_parse+0x1c6/0x300 [ 107.707154][ T9739] genl_rcv_msg+0x67d/0xea0 [ 107.711689][ T9739] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 107.717995][ T9739] ? __kasan_check_read+0x11/0x20 [ 107.723000][ T9739] ? find_held_lock+0x35/0x130 [ 107.727743][ T9739] netlink_rcv_skb+0x177/0x450 [ 107.732491][ T9739] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 107.738809][ T9739] ? netlink_ack+0xb50/0xb50 [ 107.743395][ T9739] ? __kasan_check_write+0x14/0x20 [ 107.748563][ T9739] ? netlink_deliver_tap+0x248/0xbf0 [ 107.753873][ T9739] genl_rcv+0x29/0x40 [ 107.757895][ T9739] netlink_unicast+0x59e/0x7e0 [ 107.762649][ T9739] ? netlink_attachskb+0x870/0x870 [ 107.767743][ T9739] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 107.773466][ T9739] ? __check_object_size+0x3d/0x437 [ 107.778645][ T9739] netlink_sendmsg+0x91c/0xea0 [ 107.783411][ T9739] ? netlink_unicast+0x7e0/0x7e0 [ 107.788350][ T9739] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 107.793889][ T9739] ? apparmor_socket_sendmsg+0x2a/0x30 [ 107.799330][ T9739] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 107.805552][ T9739] ? security_socket_sendmsg+0x8d/0xc0 [ 107.810988][ T9739] ? netlink_unicast+0x7e0/0x7e0 [ 107.815946][ T9739] sock_sendmsg+0xd7/0x130 [ 107.820357][ T9739] ____sys_sendmsg+0x753/0x880 [ 107.825104][ T9739] ? kernel_sendmsg+0x50/0x50 [ 107.829761][ T9739] ? debug_object_active_state+0x28a/0x350 [ 107.835597][ T9739] ? find_held_lock+0x35/0x130 [ 107.840351][ T9739] ___sys_sendmsg+0x100/0x170 [ 107.845020][ T9739] ? sendmsg_copy_msghdr+0x70/0x70 [ 107.850112][ T9739] ? lockdep_hardirqs_on+0x421/0x5e0 [ 107.855390][ T9739] ? __kasan_check_read+0x11/0x20 [ 107.860406][ T9739] ? mark_lock+0xc2/0x1220 [ 107.864814][ T9739] ? __kasan_check_read+0x11/0x20 [ 107.869820][ T9739] ? __lock_acquire+0x16f2/0x4a00 [ 107.874828][ T9739] ? debug_object_deactivate+0x320/0x320 [ 107.880464][ T9739] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 107.886605][ T9739] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 107.892873][ T9739] ? __fget_light+0x1ad/0x270 [ 107.897533][ T9739] ? __fdget+0x1b/0x20 [ 107.901582][ T9739] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 107.907806][ T9739] __sys_sendmsg+0x105/0x1d0 [ 107.912374][ T9739] ? __sys_sendmsg_sock+0xc0/0xc0 [ 107.917472][ T9739] ? lockdep_hardirqs_on+0x421/0x5e0 [ 107.922794][ T9739] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 107.928346][ T9739] ? do_syscall_64+0x26/0x790 [ 107.933015][ T9739] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 107.939085][ T9739] ? do_syscall_64+0x26/0x790 [ 107.943756][ T9739] __x64_sys_sendmsg+0x78/0xb0 [ 107.948687][ T9739] do_syscall_64+0xfa/0x790 [ 107.953234][ T9739] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 107.959131][ T9739] RIP: 0033:0x446909 [ 107.963005][ T9739] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 9b d4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 107.982936][ T9739] RSP: 002b:00007fff2cc3c8f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 107.991353][ T9739] RAX: ffffffffffffffda RBX: 0000000000003064 RCX: 0000000000446909 [ 107.999305][ T9739] RDX: 0000000000000000 RSI: 0000000020001340 RDI: 0000000000000004 [ 108.007255][ T9739] RBP: 7261756765726977 R08: 0000000000000000 R09: 0000000001bbbbbb [ 108.015383][ T9739] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 108.023347][ T9739] R13: 00000000004042c0 R14: 0000000000000000 R15: 0000000000000000