[ 18.672071][ T3636] 8021q: adding VLAN 0 to HW filter on device bond0 [ 18.684637][ T3636] eql: remember to turn off Van-Jacobson compression on your slave devices [ 18.725017][ T136] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 18.729198][ T2338] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.30' (ECDSA) to the list of known hosts. syzkaller login: [ 41.423735][ T4052] chnl_net:caif_netlink_parms(): no params data found [ 41.464751][ T4052] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.466610][ T4052] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.469005][ T4052] device bridge_slave_0 entered promiscuous mode [ 41.472858][ T4052] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.474389][ T4052] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.478017][ T4052] device bridge_slave_1 entered promiscuous mode [ 41.493588][ T4052] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 41.498701][ T4052] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 41.512531][ T4052] team0: Port device team_slave_0 added [ 41.515559][ T4052] team0: Port device team_slave_1 added [ 41.530137][ T4052] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 41.531640][ T4052] 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. [ 41.538468][ T4052] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 41.542781][ T4052] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 41.544238][ T4052] 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. [ 41.549952][ T4052] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 41.638189][ T4052] device hsr_slave_0 entered promiscuous mode [ 41.696067][ T4052] device hsr_slave_1 entered promiscuous mode [ 41.808906][ T4052] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 41.857893][ T4052] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 41.898438][ T4052] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 41.938480][ T4052] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 42.002873][ T4052] bridge0: port 2(bridge_slave_1) entered blocking state [ 42.004574][ T4052] bridge0: port 2(bridge_slave_1) entered forwarding state [ 42.006605][ T4052] bridge0: port 1(bridge_slave_0) entered blocking state [ 42.008198][ T4052] bridge0: port 1(bridge_slave_0) entered forwarding state [ 42.051049][ T4052] 8021q: adding VLAN 0 to HW filter on device bond0 [ 42.057901][ T4059] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 42.061329][ T4059] bridge0: port 1(bridge_slave_0) entered disabled state [ 42.064011][ T4059] bridge0: port 2(bridge_slave_1) entered disabled state [ 42.067107][ T4059] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 42.073874][ T4052] 8021q: adding VLAN 0 to HW filter on device team0 [ 42.079797][ T1529] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 42.081882][ T1529] bridge0: port 1(bridge_slave_0) entered blocking state [ 42.083299][ T1529] bridge0: port 1(bridge_slave_0) entered forwarding state [ 42.088383][ T4059] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 42.090557][ T4059] bridge0: port 2(bridge_slave_1) entered blocking state [ 42.091914][ T4059] bridge0: port 2(bridge_slave_1) entered forwarding state [ 42.110377][ T1529] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 42.112644][ T1529] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 42.115015][ T1529] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 42.121633][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 42.128225][ T4062] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 42.132295][ T4052] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 42.142764][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 42.144349][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 42.152006][ T4052] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 42.165668][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 42.178152][ T1529] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 42.180402][ T1529] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 42.182327][ T1529] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 42.188313][ T4052] device veth0_vlan entered promiscuous mode [ 42.194240][ T4052] device veth1_vlan entered promiscuous mode [ 42.211496][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 42.213584][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 42.215907][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 42.219706][ T4052] device veth0_macvtap entered promiscuous mode [ 42.223712][ T4052] device veth1_macvtap entered promiscuous mode [ 42.235187][ T4052] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 42.237188][ T1529] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 42.239872][ T1529] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 42.244860][ T4052] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 42.249237][ T4059] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 42.254993][ T4052] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 42.256939][ T4052] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 42.258771][ T4052] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 42.260608][ T4052] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 42.304973][ T1306] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 42.312519][ T1306] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 42.319231][ T1529] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 42.322438][ T1306] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 42.324212][ T1306] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 42.327326][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready executing program [ 42.555588][ T4068] nci: __nci_request: wait_for_completion_interruptible_timeout failed -512 [ 42.558455][ T4068] nci: nci_start_poll: failed to set local general bytes [ 45.936380][ T282] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 47.843919][ T282] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 47.922505][ T282] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 47.964938][ T282] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 49.630414][ T282] device hsr_slave_0 left promiscuous mode [ 49.686225][ T282] device hsr_slave_1 left promiscuous mode [ 49.806557][ T282] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 49.808276][ T282] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 49.813995][ T282] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 49.815532][ T282] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 49.822015][ T282] device bridge_slave_1 left promiscuous mode [ 49.823925][ T282] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.878521][ T282] device bridge_slave_0 left promiscuous mode [ 49.879899][ T282] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.066375][ T282] device veth1_macvtap left promiscuous mode [ 50.067895][ T282] device veth0_macvtap left promiscuous mode [ 50.069304][ T282] device veth1_vlan left promiscuous mode [ 50.070687][ T282] device veth0_vlan left promiscuous mode [ 50.276389][ T282] team0 (unregistering): Port device team_slave_1 removed [ 50.285691][ T282] team0 (unregistering): Port device team_slave_0 removed [ 50.294085][ T282] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 50.323744][ T282] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 50.443231][ T282] bond0 (unregistering): Released all slaves [ 50.646167][ T4068] nci: __nci_request: wait_for_completion_interruptible_timeout failed 0 [ 50.648266][ T4068] [ 50.648728][ T4068] ====================================================== [ 50.650151][ T4068] WARNING: possible circular locking dependency detected [ 50.651638][ T4068] 5.15.104-syzkaller #0 Not tainted [ 50.652757][ T4068] ------------------------------------------------------ [ 50.654201][ T4068] syz-executor219/4068 is trying to acquire lock: [ 50.655551][ T4068] ffff800015c5a9a8 (nci_mutex){+.+.}-{3:3}, at: virtual_nci_close+0x28/0x58 [ 50.657365][ T4068] [ 50.657365][ T4068] but task is already holding lock: [ 50.658913][ T4068] ffff0000d0010350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_close_device+0xf0/0x5dc [ 50.660829][ T4068] [ 50.660829][ T4068] which lock already depends on the new lock. [ 50.660829][ T4068] [ 50.663065][ T4068] [ 50.663065][ T4068] the existing dependency chain (in reverse order) is: [ 50.664945][ T4068] [ 50.664945][ T4068] -> #3 (&ndev->req_lock){+.+.}-{3:3}: [ 50.666566][ T4068] __mutex_lock_common+0x194/0x2154 [ 50.667754][ T4068] mutex_lock_nested+0xa4/0xf8 [ 50.668871][ T4068] nci_start_poll+0x498/0x1204 [ 50.669983][ T4068] nfc_start_poll+0x164/0x2a4 [ 50.671159][ T4068] nfc_genl_start_poll+0x1b8/0x308 [ 50.672390][ T4068] genl_rcv_msg+0xc18/0x1018 [ 50.673494][ T4068] netlink_rcv_skb+0x20c/0x3b8 [ 50.674669][ T4068] genl_rcv+0x38/0x50 [ 50.675644][ T4068] netlink_unicast+0x664/0x938 [ 50.676857][ T4068] netlink_sendmsg+0x844/0xb38 [ 50.678001][ T4068] ____sys_sendmsg+0x584/0x870 [ 50.679158][ T4068] ___sys_sendmsg+0x214/0x294 [ 50.680279][ T4068] __arm64_sys_sendmsg+0x1ac/0x25c [ 50.681497][ T4068] invoke_syscall+0x98/0x2b8 [ 50.682589][ T4068] el0_svc_common+0x138/0x258 [ 50.683717][ T4068] do_el0_svc+0x58/0x14c [ 50.684820][ T4068] el0_svc+0x7c/0x1f0 [ 50.685801][ T4068] el0t_64_sync_handler+0x84/0xe4 [ 50.687072][ T4068] el0t_64_sync+0x1a0/0x1a4 [ 50.688118][ T4068] [ 50.688118][ T4068] -> #2 (&genl_data->genl_data_mutex){+.+.}-{3:3}: [ 50.690009][ T4068] __mutex_lock_common+0x194/0x2154 [ 50.691249][ T4068] mutex_lock_nested+0xa4/0xf8 [ 50.692332][ T4068] nfc_urelease_event_work+0xfc/0x2a8 [ 50.693576][ T4068] process_one_work+0x790/0x11b8 [ 50.694709][ T4068] worker_thread+0x910/0x1034 [ 50.695797][ T4068] kthread+0x37c/0x45c [ 50.696775][ T4068] ret_from_fork+0x10/0x20 [ 50.697796][ T4068] [ 50.697796][ T4068] -> #1 (nfc_devlist_mutex){+.+.}-{3:3}: [ 50.699443][ T4068] __mutex_lock_common+0x194/0x2154 [ 50.700693][ T4068] mutex_lock_nested+0xa4/0xf8 [ 50.701860][ T4068] nfc_register_device+0x4c/0x310 [ 50.703064][ T4068] nci_register_device+0x6ac/0x7c4 [ 50.704281][ T4068] virtual_ncidev_open+0x6c/0xd8 [ 50.705494][ T4068] misc_open+0x2f0/0x368 [ 50.706513][ T4068] chrdev_open+0x3e8/0x4fc [ 50.707576][ T4068] do_dentry_open+0x780/0xed8 [ 50.708694][ T4068] vfs_open+0x7c/0x90 [ 50.709629][ T4068] path_openat+0x1f28/0x26f0 [ 50.710667][ T4068] do_filp_open+0x1a8/0x3b4 [ 50.711748][ T4068] do_sys_openat2+0x128/0x3d8 [ 50.712780][ T4068] __arm64_sys_openat+0x1f0/0x240 [ 50.714010][ T4068] invoke_syscall+0x98/0x2b8 [ 50.715185][ T4068] el0_svc_common+0x138/0x258 [ 50.716172][ T4068] do_el0_svc+0x58/0x14c [ 50.717260][ T4068] el0_svc+0x7c/0x1f0 [ 50.718255][ T4068] el0t_64_sync_handler+0x84/0xe4 [ 50.719384][ T4068] el0t_64_sync+0x1a0/0x1a4 [ 50.720467][ T4068] [ 50.720467][ T4068] -> #0 (nci_mutex){+.+.}-{3:3}: [ 50.721949][ T4068] __lock_acquire+0x32cc/0x7620 [ 50.723133][ T4068] lock_acquire+0x240/0x77c [ 50.724219][ T4068] __mutex_lock_common+0x194/0x2154 [ 50.725480][ T4068] mutex_lock_nested+0xa4/0xf8 [ 50.726548][ T4068] virtual_nci_close+0x28/0x58 [ 50.727633][ T4068] nci_close_device+0x304/0x5dc [ 50.728848][ T4068] nci_unregister_device+0x5c/0x22c [ 50.730040][ T4068] virtual_ncidev_close+0x70/0xb0 [ 50.731230][ T4068] __fput+0x30c/0x7f0 [ 50.732204][ T4068] ____fput+0x20/0x30 [ 50.733159][ T4068] task_work_run+0x130/0x1e4 [ 50.734161][ T4068] do_exit+0x688/0x2134 [ 50.735141][ T4068] do_group_exit+0x110/0x268 [ 50.736188][ T4068] get_signal+0x634/0x1550 [ 50.737262][ T4068] do_notify_resume+0x3d0/0x32b8 [ 50.738378][ T4068] el0_svc+0xfc/0x1f0 [ 50.739343][ T4068] el0t_64_sync_handler+0x84/0xe4 [ 50.740522][ T4068] el0t_64_sync+0x1a0/0x1a4 [ 50.741557][ T4068] [ 50.741557][ T4068] other info that might help us debug this: [ 50.741557][ T4068] [ 50.743741][ T4068] Chain exists of: [ 50.743741][ T4068] nci_mutex --> &genl_data->genl_data_mutex --> &ndev->req_lock [ 50.743741][ T4068] [ 50.746675][ T4068] Possible unsafe locking scenario: [ 50.746675][ T4068] [ 50.748223][ T4068] CPU0 CPU1 [ 50.749270][ T4068] ---- ---- [ 50.750326][ T4068] lock(&ndev->req_lock); [ 50.751280][ T4068] lock(&genl_data->genl_data_mutex); [ 50.752968][ T4068] lock(&ndev->req_lock); [ 50.754430][ T4068] lock(nci_mutex); [ 50.755264][ T4068] [ 50.755264][ T4068] *** DEADLOCK *** [ 50.755264][ T4068] [ 50.757018][ T4068] 1 lock held by syz-executor219/4068: [ 50.758063][ T4068] #0: ffff0000d0010350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_close_device+0xf0/0x5dc [ 50.760155][ T4068] [ 50.760155][ T4068] stack backtrace: [ 50.761369][ T4068] CPU: 0 PID: 4068 Comm: syz-executor219 Not tainted 5.15.104-syzkaller #0 [ 50.763224][ T4068] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 50.765547][ T4068] Call trace: [ 50.766292][ T4068] dump_backtrace+0x0/0x530 [ 50.767247][ T4068] show_stack+0x2c/0x3c [ 50.768169][ T4068] dump_stack_lvl+0x108/0x170 [ 50.769120][ T4068] dump_stack+0x1c/0x58 [ 50.769961][ T4068] print_circular_bug+0x150/0x1b8 [ 50.771112][ T4068] check_noncircular+0x2cc/0x378 [ 50.772225][ T4068] __lock_acquire+0x32cc/0x7620 [ 50.773309][ T4068] lock_acquire+0x240/0x77c [ 50.774307][ T4068] __mutex_lock_common+0x194/0x2154 [ 50.775356][ T4068] mutex_lock_nested+0xa4/0xf8 [ 50.776352][ T4068] virtual_nci_close+0x28/0x58 [ 50.777383][ T4068] nci_close_device+0x304/0x5dc [ 50.778446][ T4068] nci_unregister_device+0x5c/0x22c [ 50.779607][ T4068] virtual_ncidev_close+0x70/0xb0 [ 50.780745][ T4068] __fput+0x30c/0x7f0 [ 50.781644][ T4068] ____fput+0x20/0x30 [ 50.782500][ T4068] task_work_run+0x130/0x1e4 [ 50.783554][ T4068] do_exit+0x688/0x2134 [ 50.784412][ T4068] do_group_exit+0x110/0x268 [ 50.785384][ T4068] get_signal+0x634/0x1550 [ 50.786326][ T4068] do_notify_resume+0x3d0/0x32b8 [ 50.787406][ T4068] el0_svc+0xfc/0x1f0 [ 50.788177][ T4068] el0t_64_sync_handler+0x84/0xe4 [ 50.789241][ T4068] el0t_64_sync+0x1a0/0x1a4